CN109746845A - A hand tool and its manufacturing method - Google Patents
A hand tool and its manufacturing method Download PDFInfo
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- CN109746845A CN109746845A CN201711079865.1A CN201711079865A CN109746845A CN 109746845 A CN109746845 A CN 109746845A CN 201711079865 A CN201711079865 A CN 201711079865A CN 109746845 A CN109746845 A CN 109746845A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
本发明公开了一种手动工具的制造方法，包括：对手动工具的力矩输出部件或力矩传递部件的第一表面进行双频感应淬火，使得从力矩输出部件的第一表面至力矩输出部件的内部的第一深度范围内，或从力矩传递部件的第一表面至力矩传递部件的内部的第一深度范围内，形成淬硬层，淬硬层的硬度高于力矩输出部件或力矩传递部件的本体的硬度；双频感应淬火被设置为在同一感应线圈上同时通入或导入高频电流和中频电流，高频电流和中频电流同时对力矩输出部件的第一表面或力矩传递部件的第一表面进行加热，再将力矩输出部件或力矩传递部件进行冷却淬火。本发明还公开了上述方法制造的手动工具。本发明经过双频感应淬火处理的手动工具具有良好的抗磨损能力。
The invention discloses a method for manufacturing a hand tool, comprising: performing dual-frequency induction hardening on the first surface of a torque output part or a torque transmission part of the hand tool, so that the first surface of the torque output part reaches the inner part of the torque output part. Within the first depth range of the torque transmission member, or within the first depth range from the first surface of the torque transmission member to the interior of the torque transmission member, a hardened layer is formed, and the hardness of the hardened layer is higher than that of the torque output member or the body of the torque transmission member hardness; dual-frequency induction hardening is set to pass or introduce high-frequency current and intermediate-frequency current on the same induction coil at the same time, and the high-frequency current and intermediate-frequency current simultaneously affect the first surface of the torque output part or the first surface of the torque transmission part After heating, the torque output parts or torque transmission parts are cooled and quenched. The invention also discloses the hand tool manufactured by the above method. The hand tool of the present invention that has undergone dual-frequency induction hardening treatment has good wear resistance.
Description
Technical field
The present invention relates to a kind of hand-operated tools and its manufacturing methods.
Background technique
It is matrix that the clamp type tools such as traditional water pump pliers, pipe vice, locking pliers, which mostly use whole carbon steel, structural alloy steel,
The shipment after punching blanking, hot forging, machining, whole Tempering and Quenching, the single high-frequency induction hardening of teeth portion, assembly, packaging.
Under normal circumstances, the binding clip part of the pincers such as water pump pliers, pipe vice, locking pliers class hardware tool needs process hot twice
Processing.It is the whole modifier treatment (i.e. quenching+high tempering) being hot-forged after binding clip for the first time, obtains binding clip matrix preferable
Intensity and toughness, be unlikely to be broken in actual use.The secondary high-frequency induction hardening of teeth portion for the second time, make teeth portion obtain compared with
High hardness, wearability, improve the service life of these clamp type tools.
Traditionally, the high-frequency induction hardening of the teeth portion of the clamp type tools such as water pump pliers, pipe vice, locking pliers mostly uses single frequency
Rate induced current, i.e., when high-frequency induction device heats, induction coil only leads to the electric current of a frequency, the advantages of this method always
Be tables of equipment one, easy to operate, but be the non-circular plane of symmetry in view of the teeth portion of pliers, it is complex-shaped, single-frequency induction heating without
Method effectively heats entire teeth portion section simultaneously, is quenched, so that the high-frequency quenching quality to teeth portion brings greater risk.When
It may be that the two sides pointed part of the tooth of pliers is heated, hardens, and the middle section of tooth adds when the high-frequency heating time is shorter
It is hot insufficient, so that the middle section hardness of tooth is insufficient after Cooling Quenching, the centre of tooth at real work (such as clamp)
It is partially prone to wear, be collapsed, leads to entire scrap of the product.For improve pliers tooth middle section defect under hardening, prolong
When long high frequency heating time, then most of region comprising entire binding clip is all heated, hardens.Although the flank of tooth of pliers is all quenched
Firmly, but tooth binding clip major part below region is also in high rigidity state, and brittleness is larger, and binding clip is easy to happen in use process
The risk of fracture.
To overcome drawbacks described above, there is part of the manufacturer to attempt (correspondingly, to have using the induction hardening equipment of two different frequencies
Two induction coils) to water pump pliers, pipe vice, locking pliers binding clip teeth portion carry out sequencing heating and Cooling Quenching,
It is expected that solving the above problems.First heated in advance on Medium frequency induction device (correspondingly, being passed through electric current of intermediate frequency on induction coil)
The tooth root and tooth root following region of the tooth of binding clip, are then quickly transferred to high-frequency induction device and (correspondingly, are passed through on induction coil
High-frequency current) on heat binding clip tooth surface projections point, then carry out subsequent Cooling Quenching.This production method can be one
Determine the quenching quality for improving the tooth of pliers in degree, but defect is also apparent.For example, two equipment takes up a large area；
It needs to shift workpiece rapidly on two induction heating apparatuses, is related to multiple workpiece feeding, blanking clamping, heating, quenching quality
It is unstable；Heating time is long, and workpiece is easy to oxidize；Process is more, and the production cycle is long, and production cost is excessively high.
For mute ratchet spanner, D are its core parts.By design principle, it is generally desirable to D hexagonal working faces are hard
Degree is higher, keeps good wearability；It is expected that the center portion and D quadrangles work surface hardness of D turret heads are lower simultaneously, protects
Good toughness is held, is unlikely to be broken in actual work.But traditionally, D are all made of bulk heat treatmet, hexagonal work
Face, quadrangle working face are all in identical hardness range.When integral hardness is higher, hex surface wearability is preferable, working properly, but
Quadrangle face easy fracture；When integral hardness is lower, four edged surface toughness are preferable, working properly, but hex surface is prone to wear.To change
Kind drawbacks described above has part of the manufacturer to attempt the high-frequency quenching that D hexagonal working faces are carried out with single-frequency.But due to high-frequency heating
Skin effect, six inclines of hexagonal working face are easy to overheat, and instead result in incline site tissue overheat, intensity, wear-resisting
Property reduce.
Class product is pressed from both sides for F, iron part is its core part.By design principle, two working faces need iron part up and down
Higher hardness, center portion keep lower hardness.But traditionally, the heat treatment production of iron part is all made of single-frequency high frequency and quenches
Fire.When shorter between when heated, the case depth of iron part upper and lower surface is respectively less than projected depth, and two above and below iron part
The hardening depth of a working face differs greatly, and influences the using effect of F folder；When the heating times are long, iron part upper and lower surface
Hardened layer can achieve projected depth, but iron part is severely deformed, can not be straightened, lead to scrap of the product.
Wrench dual-purpose for zero degree, ratchet ring are its core parts, and wall thickness is relatively thin.By design principle, the appearance of ratchet ring
Face needs higher hardness, higher wearability.Traditionally, ratchet ring generally uses structural alloy steel, tool steel substrate, through machine
Tool processing, it is whole it is quenched after carry out Surface thermo-chemical treatment (Surface heat-treatent include but not to improve the surface hardness of ratchet ring
It is limited to carburizing, nitridation, carbo-nitriding etc.), but the problem of being easy to appear, is that depth of penetration is not easily controlled, and product deformation.Or
Person, ratchet ring use Some tools steel, bearing steel for matrix, carry out bulk heat treatmet after machined, obtain high rigidity shape
State.But the defect of the process is that ratchet ring product integral hardness is too high, and brittleness is larger, during actual use ratchet ring holds
Easy fracture.
Ratchet, pawl are the core parts of ratchet screw driver, and ring gear, sun gear, planet tooth are the core for accelerating screwdriver
Heart part.By design principle, the outer surface of the parts such as ratchet, pawl, ring gear, sun gear, planet tooth needs higher hardness,
Guarantee the surface abrasion resistance of driving parts；And the inside of the parts such as ratchet, pawl, ring gear, sun gear, planet tooth desirably compared with
Soft keeps the toughness of driving parts, is unlikely to be broken during military service.Traditionally, ratchet, pawl, ring gear, the sun
The parts such as wheel, planet tooth generally use iron-base sintered metal piece, or use carbon steel, structural alloy steel, tool steel for matrix, warp
Integral quenching, tempering are carried out after powder metallurgy sintered, or after machining.When ratchet, pawl, ring gear, sun gear, planet
When the integral hardness of the parts such as tooth is higher, surface abrasion resistance is preferable, but part brittleness is big, is easily broken off；When ratchet, pawl, interior
When the integral hardness of the parts such as gear ring, sun gear, planet tooth is lower, part toughness is preferable, but outer surface wearability is insufficient.
Therefore, how to improve the spine of the tooth of clamp type tool, the turret head of ratchet wrench, the rod piece of F folder, mute ratchet wrench
Torus, ratchet, the pawl of ratchet screw driver accelerate parts quenchings quality such as the ring gear, sun gear, planet tooth of screwdriver and hard
Degree distribution, so that promoting product usage experience just becomes a meaningful trial.
Summary of the invention
Technical problem to be solved by the invention is to provide the torque output blocks that one kind can improve hand-operated tools, such as
The tooth of clamp type tool, the turret head of ratchet wrench, F folder rod piece, mute ratchet wrench ratchet ring, the spine of ratchet screw driver
Wheel, pawl accelerate the quenching quality of the parts such as the ring gear, sun gear, planet tooth of screwdriver and the method for hardness distribution.
In order to solve the above technical problems, the first aspect of the present invention provides a kind of manufacturing method of hand-operated tools, packet
Include following steps:
Raw material metal is provided；
By raw material metal by the requirement machine-shaping of hand-operated tools, there is hand-operated tools for directly or indirectly right
The torque output block that workpiece exerts a force or the torque-transmitting member for transmitting torque；
The first surface of first surface or torque-transmitting member to torque output block carries out double frequency induction, so that
Out of, torque output block first surface to the first depth bounds of the inside of torque output block, or from torque-transmitting member
First surface to the first depth bounds of the inside of torque-transmitting member in, form quench-hardened case, the hardness of quench-hardened case is higher than power
The hardness of the ontology of square output block or torque-transmitting member；
Double frequency induction is arranged on same induction coil while being passed through or importing high-frequency current and electric current of intermediate frequency,
High-frequency current and electric current of intermediate frequency simultaneously add the first surface of torque output block or the first surface of torque-transmitting member
Then torque output block or torque-transmitting member are carried out Cooling Quenching again by heat.
Further, the first depth is 0.3~8.0mm, it is preferable that is 0.6~3.0mm.
Further, double frequency induction to be formed with transition region between quench-hardened case and the ontology of torque output block,
The hardness of transition region is not higher than the hardness of quench-hardened case, and the hardness of the ontology lower than torque output block.
Further, the first surface of torque output block is after double frequency induction, the ontology of torque output block
Region in addition to quench-hardened case and transition region keeps original hardness constant.
Further, double frequency induction to be formed with transition region between quench-hardened case and the ontology of torque-transmitting member,
The hardness of transition region is not higher than the hardness of quench-hardened case, and the hardness of the ontology lower than torque-transmitting member.
Further, the first surface of torque-transmitting member is after double frequency induction, the ontology of torque-transmitting member
Region in addition to quench-hardened case and transition region keeps original hardness constant.
Further, using induction heating apparatus to the first of the first surface of torque output block or torque-transmitting member
Surface is heated, and induction heating apparatus includes induction coil.
Further, in induction heating apparatus, the frequency range of high-frequency current is 100-500KHz, power bracket 5-
1500KW。
Further, in induction heating apparatus, the frequency range of electric current of intermediate frequency is 0.2-25KHz, power bracket 5-
1500KW。
Further, the medium that Cooling Quenching uses is quenching oil or PAG water-soluble hardening media, wherein PAG water-soluble
Hardening media main component is poly- alkylene ethylene glycol (Polyaleneglycol) polymer, and poly- alkylene ethylene glycol is a kind of epoxy
The copolymer of ethane and propylene oxide, abbreviation PAG.
Further, manufacturing method further includes after double frequency induction, carrying out tempering, tempering to hand-operated tools
Temperature is 160-400 DEG C, soaking time 2-8h.
Further, raw material metal is powdered metallurgical material, carbon steel, structural alloy steel or tool steel class raw material.
Further, hand-operated tools is the production that clamp type tool, spanner, fixture or screwdriver etc. are driven by tooth-shape structure
Product.
The forming process of quench-hardened case and transition zone in hand-operated tools of the invention is as follows:
In the workpiece through dual-frequency p-code, it is followed successively by double frequency quench-hardened case, transition region and matrix from outside to inside, wherein harden
What layer and transition region were simultaneously formed.In practical dual-frequency p-code, the heating temperature of workpiece surface has been more than the phase transition temperature of material,
Martensite is formed in subsequent chilling quenching, hardness improves, and forms double frequency quenched zone；From the shallow-layer area of double frequency quench-hardened case inwards
Domain, heating temperature do not reach the phase transition temperature of material still, but have been more than the tempering temperature of the material, and actually one
Drawing process forms transition region so hardness reduces；Again inwards, the heating temperature of material drastically reduces, not up to the material
Tempering temperature, hardness remain unchanged, and are matrix.In practical application, the narrower the depth of transition region the better.
The second aspect of the present invention provides a kind of hand-operated tools, and hand-operated tools includes at least torque output block or torque
Transferring element, out of, torque output block first surface to the first depth bounds of the inside of torque output block, or from power
In the first surface of square transferring element to the first range of the inside of torque-transmitting member, it is formed with quench-hardened case, quench-hardened case is formed
Process are as follows: by same induction coil simultaneously the high-frequency current that is passed through or imports and electric current of intermediate frequency simultaneously to torque output block
Or the first surface of torque-transmitting member is heated, and torque output block or torque-transmitting member are then carried out cooling again and quenched
Fire.
Further, the hardness of quench-hardened case is higher than the hardness of the ontology of torque output block or torque-transmitting member.
Further, the first depth is 0.3~8.0mm.It preferably, is 0.6~3.0mm.
Further, transition region is formed between quench-hardened case and the ontology of torque output block, the hardness of transition region is not high
In the hardness of the ontology of torque output block, and it is lower than the hardness of quench-hardened case.
Further, double frequency induction to be formed with transition region between quench-hardened case and the ontology of torque-transmitting member,
The hardness of transition region is not higher than the hardness of quench-hardened case, and the hardness of the ontology lower than torque-transmitting member.
Further, the depth of transition region is not more than 3.0mm.Preferably, not larger than 1.5mm.
Further, the contact surface of transition region and quench-hardened case extends along the surface of quench-hardened case.
Further, the hardness of quench-hardened case is greater than 50HRC, it is therefore preferable to 54-62HRC, more preferably 58HRC.
Further, quench-hardened case extends along the first surface of torque output block or the first surface of torque-transmitting member.
Further, hand-operated tools is clamp type tool, and the binding clip of clamp type tool is torque output block, the teeth portion of binding clip
Outer surface is first surface, teeth portion while the heating by high-frequency current and electric current of intermediate frequency, and after Cooling Quenching, from teeth portion
Outer surface to the first depth bounds of the inside of teeth portion in be formed with quench-hardened case, quench-hardened case uniformly divides along the outer profile of teeth portion
Cloth.
Further, hand-operated tools is spanner, and spanner includes torque output block, for the handle of input torque and one
Or multiple wedging members, the first end of handle have inner surface, torque output block is set to the inner surface of the first end of handle
Interior, torque output block has outer surface, and first surface is the outer surface of torque output par, c, and it is defeated that wedging member is set to torque
Out between the inner surface of the first end of the outer surface and handle of part, for preventing the outer surface of torque output par, c relative to hand
The inner surface of the first end of handle is along the rotation for presetting direction；Wherein, the outer surface of torque output block is simultaneously by high frequency
The heating of electric current and electric current of intermediate frequency, and after Cooling Quenching, from the outer surface of torque output par, c to torque output block
It is formed with quench-hardened case in the first internal depth bounds, quench-hardened case and the outer surface of torque output par, c are concentric, export along torque
Partial outer surface is uniformly distributed.
Further, hand-operated tools is fixture, and fixture includes the first clamp, the second clamp and is arranged in the first clamp and the
Rod piece in two clamps, the first clamp and the second clamp can carry out opposite or reverse motions on rod piece, to realize clamping
Or the planning function；Rod piece is the first working face and the second working face that torque-transmitting member first surface includes rod piece, the first work
Make the heating by high-frequency current and electric current of intermediate frequency simultaneously of face and the second working face, and after Cooling Quenching, from the first work
To shape in the first depth bounds of the inside of rod piece in face to the first depth bounds of the inside of rod piece and from the second working face
At there is quench-hardened case, quench-hardened case is roughly parallel to the first working face and the second working face, equal along the first working face and the second working face
Even distribution.
Further, the first working face is located on the position opposite with the second working face, the first clamp and the second clamp energy
It is enough to carry out opposite or reverse motions along the first working face and the second working face.
Further, hand-operated tools is the spanner with ratchet ring, and ratchet ring is torque output block, and first surface is spine
The outer surface of torus, the heating by high-frequency current and electric current of intermediate frequency simultaneously of the outer surface of ratchet ring, and after Cooling Quenching,
From the outer surface of ratchet ring to being formed with quench-hardened case in the first depth bounds of the inside of ratchet ring, quench-hardened case and ratchet ring it is outer
Surface is concentric, and the outer surface along ratchet ring is uniformly distributed.
Further, hand-operated tools is the ratchet screw driver with ratchet device, and ratchet device is torque-transmitting member, spine
Wheel apparatus includes ratchet and pawl, and the outer surface of ratchet and the outer surface of pawl are added by high-frequency current and electric current of intermediate frequency simultaneously
Heat, and after Cooling Quenching, from the outer surface of ratchet in the first depth bounds of the inside of ratchet and from the outer of pawl
Quench-hardened case is formed in surface to the first depth bounds of the inside of pawl；The outer surface of quench-hardened case and ratchet on ratchet is same
The heart, the outer surface along ratchet are uniformly distributed；The outer surface of quench-hardened case and pawl on pawl is concentric, and the outer surface along pawl is uniform
Distribution.
Further, ratchet screw driver further includes speedup planetary gear mechanism, speedup planetary gear mechanism include ring gear,
Sun gear and planet tooth, the outer surface of the outer surface of ring gear, the outer surface of sun gear and planet tooth is simultaneously by high-frequency current
With the heating of electric current of intermediate frequency, and after Cooling Quenching, from ring gear, sun gear and the respective outer surface of planet tooth to respective
Quench-hardened case is formed in the first internal depth bounds；The outer surface of quench-hardened case and ring gear on ring gear is concentric, along internal tooth
The outer surface of circle is uniformly distributed；The outer surface of quench-hardened case and sun gear on sun gear is concentric, and the outer surface along sun gear is uniform
Distribution；The outer surface of quench-hardened case and planet tooth on planet tooth is concentric, and the outer surface along planet tooth is uniformly distributed.
Compared with the hand-operated tools of conventional single-frequency impewdance matching processing, hand-operated tools after double frequency induction processing of the present invention
With better antiwear property.
Technical concept of the invention, specific embodiment are described in further detail below in conjunction with attached drawing.
Detailed description of the invention
Fig. 1 is the schematic diagram of the water pump pliers of the embodiment of the present invention 1；
Fig. 2 is partial enlarged view in Fig. 1；
Fig. 3 a is the cross-sectional view in Fig. 2 along the direction A-A (using double frequency electric current induction heating)；
Fig. 3 b is that the cross-sectional view in Fig. 2 along the direction A-A (uses single-frequency high-frequency current induction heating, and heating time
It is shorter)；
Fig. 3 c is that the cross-sectional view in Fig. 2 along the direction A-A (uses single-frequency high-frequency current induction heating, and heating time
It is longer)；
Fig. 4 is the schematic diagram of the mute wheel wrench of the embodiment of the present invention 2；
Fig. 5 a is D in Fig. 4 partial enlarged views；
Fig. 5 b is the D cross-sectional views along the direction B-B in Fig. 5 a；
Fig. 6 is the schematic diagram of the F folder of the embodiment of the present invention 3；
Fig. 7 is in Fig. 6 along the cross-sectional view in the direction C-C；
Fig. 8 is in Fig. 6 along the cross-sectional view in the direction C-C；
Fig. 9 is the schematic diagram of the dual-purpose wrench of zero degree of the embodiment of the present invention 4；
Figure 10 is the schematic diagram in ratchet ring section in Fig. 9；
Figure 11 is the schematic diagram of the ratchet screw driver of the embodiment of the present invention 5；
Figure 12 is in Figure 11 along the cross-sectional view in the direction E-E；
Figure 13 is the schematic diagram of the acceleration screwdriver of the embodiment of the present invention 6；
Figure 14 is in Figure 13 along the cross-sectional view in the direction F-F；
Figure 15 is in Figure 13 along the cross-sectional view in the direction G-G；
Figure 16 be the ratchet of the embodiment of the present invention 5, the ratchet of the tooth of pawl and embodiment 6, pawl, sun gear, planetary gear,
Partial sectional view of the tooth of ring gear after double frequency induction；
Figure 17 is in embodiment 8, the teeth portion of water pump pliers jaw after the dual-frequency p-code, binding clip before, during and after three sections
Binding clip cross section is done respectively, and is inlayed, polished, corroded the metallographic microscope of the shown binding clip quench-hardened case come out.
Specific embodiment
A preferred embodiment of the invention provides a kind of manufacturing method of hand-operated tools, comprising the following steps:
Raw material metal is provided；
By raw material metal by the requirement machine-shaping of hand-operated tools, there is hand-operated tools (green state) for direct
Or the torque output block to workpiece force or torque-transmitting member for transmitting torque indirectly；
First surface or torque-transmitting member to torque output block carry out double frequency induction, so that exporting from torque
In the first surface of component to the first depth bounds of the inside of torque output block, or from the first surface of torque-transmitting member
To the first depth bounds of the inside of torque-transmitting member, quench-hardened case is formed, the hardness of quench-hardened case is higher than torque output block
Or the hardness of the ontology of torque-transmitting member；Wherein, the first depth is 0.3~8.0mm, it is preferable that is 0.6~3.0mm.It hardens
Transition region is also formed between layer and the ontology of torque output block, the hardness of transition region is not higher than the hardness of quench-hardened case, and low
In the hardness of the ontology of torque output block.The first surface of torque output block is after double frequency induction, torque output
Region of the ontology of component in addition to quench-hardened case and transition region keeps original hardness constant.
Tempering is carried out after double frequency induction, then to hand-operated tools, tempering temperature is 160-400 DEG C, when heat preservation
Between be 2-8h.In a preferred embodiment, after double frequency induction, hand-operated tools is tempered in heat-treatment furnace.
Wherein, double frequency induction is arranged on same induction coil while being passed through or importing high-frequency current and intermediate frequency
Electric current, high-frequency current and electric current of intermediate frequency simultaneously to the first surface of the first surface of torque output block or torque-transmitting member into
Row heating, then carries out Cooling Quenching for torque output block or torque-transmitting member again.Specifically, using induction heating apparatus
The first surface of torque output block or torque-transmitting member is heated, induction heating apparatus includes induction coil.Feeling
It answers in heating device, the frequency range of high-frequency current is 100-500KHz, power bracket 5-1500KW；The frequency of electric current of intermediate frequency
Range is 0.2-25KHz, power bracket 5-1500KW.The medium that Cooling Quenching uses is that quenching oil or PAG water-soluble quench
Medium.
In presently preferred embodiments of the present invention, raw material metal is powdered metallurgical material, carbon steel, structural alloy steel or tool steel
Class raw material.Hand-operated tools is the product being driven by tooth-shape structure, such as clamp type tool (such as water pump pliers, pipe vice, locking pliers
Deng), spanner (such as mute ratchet spanner ratchet spanner, zero degree combination wrenches etc.), fixture (such as F folder) or screwdriver (such as ratchet
Screwdriver, acceleration screwdriver etc.).Induction heating apparatus used in the present embodiment is on the market or induction well known in the art adds
Thermal, the induction heating apparatus include an induction coil, which can be passed through high-frequency current and medium frequency electric simultaneously
Stream.
Another preferred embodiment of the invention provides a kind of hand-operated tools, which includes at least torque output section
Part or torque-transmitting member, from the first surface of torque output block to the first depth bounds of the inside of torque output block
It is interior, or out of, torque-transmitting member first surface to the first range of the inside of torque-transmitting member, be formed with quench-hardened case, quench
The process that hard formation is formed are as follows: by the high-frequency current and electric current of intermediate frequency that are passed through or import simultaneously on same induction coil simultaneously to torque
The first surface of output block or torque-transmitting member is heated, then again by torque output block or torque-transmitting member into
Row Cooling Quenching.Wherein, the first depth is 0.3~8.0mm.It preferably, is 0.6~3.0mm.Quench-hardened case is along torque output block
First surface extend.The hardness of quench-hardened case is higher than the hardness of the ontology of torque output block or torque-transmitting member.Quench-hardened case
Hardness be greater than 50HRC, it is therefore preferable to 54-62HRC, more preferably 58HRC.
Be formed with transition region between quench-hardened case and torque output block or the ontology of torque-transmitting member, transition region with harden
The contact surface of layer extends along the surface of quench-hardened case.Sheet of the hardness of transition region not higher than torque output block or torque-transmitting member
The hardness of body, and it is lower than the hardness of quench-hardened case.The depth of transition region is not more than 3.0mm.Preferably, not larger than 1.5mm.
Embodiment 1
In the present embodiment, hand-operated tools is clamp type tool, such as water pump pliers, pipe vice, and locking pliers etc., this sentences water pump pliers
For, but not limited to this.As illustrated in fig. 1 and 2, which includes binding clip 1 and handle 2, using carbon steel or structural alloy steel
It is made.Wherein, binding clip 1 is torque output block, for the frictional force between increase and workpiece when binding clip 1 has clamping workpiece
Teeth portion 3, the outer surface of the teeth portion 3 of binding clip 1 are first surface, the heating by high-frequency current and electric current of intermediate frequency simultaneously of teeth portion 3.When
When high-frequency current heats, the protrusion portions under heat of tooth is fast in teeth portion 3, thus temperature is higher；When electric current of intermediate frequency heating, the bottom of tooth
Shallow region below portion and its bottom is heated fast, and temperature is higher.It is shallow below the bottom of each point and tooth in this way at the bumps of teeth portion 3
The heating temperature of layer region (shallow region below from the surface of tooth to the bottom of tooth is the first depth bounds) reaches unanimity, by
It is hot uniformly, during subsequent Cooling Quenching, shallow region below the concave-convex place bottom of each point and tooth of teeth portion 3 and meanwhile quench,
Hardening, to obtain along the equally distributed quench-hardened case 4 of the outer profile of teeth portion 3 (see Fig. 3 a).The quench-hardened case 4 makes the present embodiment
Water pump pliers in subsequent use process can uniform stressed, improve the service life of the tool.The matrix of quench-hardened case 4 and water pump pliers
Between there is the transition region 5 (see Fig. 3 a) relatively mitigated, the contact surface of transition region 5 and quench-hardened case 4 extends along the surface of quench-hardened case 4,
Improve the fatigue resistance of the teeth portion 3 of the tool.
As shown in Figure 3a, 1 section of binding clip is made to bottom direction A-A in the top along the teeth portion 3 for being parallel to binding clip 1, can see
It arrives, after the double frequency induction of the present embodiment, the contour line that the bottom of quench-hardened case 4 is formed by the section is substantially flat
Row is in the top or bottom of teeth portion 3, and the uniform depth of quench-hardened case 4 is consistent, and the surface along entire binding clip 1 is uniformly distributed.This is quenched
The hardness of hard formation 4 is higher than the hardness of the ontology 6 of binding clip 1.
The advantage of the present embodiment for ease of description, Fig. 3 b show the high-frequency induction used in the prior art to binding clip 1
The case where quenching is single-frequency induced current, that is, in the heating of high-frequency induction device, induction coil only passes through one always
The electric current of a frequency, when the high-frequency heating time is shorter, only the two sides pointed part of tooth is heated, quenches in 1 teeth portion 3 of binding clip
Firmly, the middle section underheat of tooth, so that the middle section hardness of tooth is insufficient after Cooling Quenching.In actual work,
The middle section of tooth is prone to wear, be collapsed, so that tool be made to scrap.
Fig. 3 c show in the prior art in order to improve binding clip 1 teeth portion 3 tooth middle section defect under hardening,
When extending the high-frequency heating time, most of region comprising entire binding clip 1 is all heated, hardens.In this case, although teeth portion
3 surface is hardened, but the 3 most of region of binding clip 1 below of teeth portion is also in high rigidity state, and brittleness is larger, uses
The risk of the fracture of binding clip 1 is easy to happen in journey.
In the present embodiment, from the surface of teeth portion 3 to the orientation measurement of the bottom of teeth portion 3, it is formed by the depth of quench-hardened case 4
For 0.3-8.0mm.In a preferred embodiment, 4 depth of quench-hardened case is 0.6-3.0mm.
The present embodiment is formed by the hardness of quench-hardened case 4 in 50HRC or more, in a preferred embodiment, quench-hardened case 4
Hardness is 54-62HRC；In a preferred embodiment, the hardness of quench-hardened case 4 is 58HRC.Quench-hardened case 4 and basis material
There are a narrow transition region 5 (see Fig. 3 a) between (ontology 6 of binding clip 1), the hardness of the transition region 5 is not higher than basis material
Hardness, while be lower than quench-hardened case 4 hardness.The depth of transition region 5 is not more than 3.0mm.In a preferred embodiment, mistake
The depth in area 5 is crossed no more than 1.5mm.
Embodiment 2
The hand-operated tools of the present embodiment is ratchet spanner, and by taking mute ratchet spanner as an example, but not limited to this.Such as Fig. 4 institute
Show, which includes torque output block 7 (i.e. D), the handle 8 for input torque and one or more wedgings
Component (not shown), is made of structural alloy steel.The first end of handle 8 has inner surface, and torque output block 7 is set to hand
In the inner surface of the first end of handle 8, torque output block 7 (D) have outer surface, including hexagonal working face 11 (positioned at D
Top) and quadrangle working face 12 (lower part positioned at D) (see Fig. 5 a).Wedging member is set to the appearance of torque output block 7
Between the inner surface of the first end of face and handle 8, for preventing the outer surface of torque output block 7 first relative to handle 8
The inner surface at end is along the rotation for presetting direction.Double frequency sense is carried out to the hexagonal working face 11 of torque output block 7 (i.e. D)
It should quench, i.e., be passed through high-frequency current and electric current of intermediate frequency simultaneously in same induction coil, the electric current of both frequencies heats simultaneously
The hexagonal working face 11 of torque output block 7 and the shallow region inside hexagonal working face 11 to torque output block 7 are heated
Uniformly, Cooling Quenching is then passed through, hexagonal working face 11 and the output from hexagonal working face 11 to torque during Cooling Quenching
Shallow region (the first depth bounds) inside component 7 quenches, hardens simultaneously, to obtain substantially concentric to hexagonal working face 11
Quench-hardened case 9 (see Fig. 5 b), which is uniformly distributed along hexagonal working face 11.This makes the six of torque output par, c (D)
Angle working face 11 have high rigidity and high-wearing feature, while the hexagonal working face 11 of torque output par, c to quadrangle working face 12 it
Between most of region and 12 surface of quadrangle working face still keep compared with soft and preferable toughness, to improve ratchet
The service life of spanner.
As shown in figure 5a and 5b, the axis direction B-B along the torque output block 7 perpendicular to mute ratchet spanner is to hexagonal
Head is allocated as section, quench-hardened case 9 is formed by the section substantially concentric to the outer profile of hexagonal working face 11, and quench-hardened case
9 uniform depth is consistent, is uniformly distributed along entire hexagonal working face 11.From the outer profile of hexagonal working face 11 to torque output section
The internal measurement of part 7, the depth for being formed by quench-hardened case 9 is that 0.3-8.0mm is formed by and hardens in a preferred embodiment
The depth of layer 9 is 0.6-3.0mm.The hardness of the quench-hardened case 9 is higher than the hardness of the ontology of torque output block 7.
The present embodiment is formed by the hardness of quench-hardened case 9 in 50HRC or more, in a preferred embodiment, quench-hardened case 9
Hardness is 54-62HRC；In a preferred embodiment, the hardness of quench-hardened case 9 is 58HRC.Quench-hardened case 9 and basis material
There are a narrow transition region 10 (see Fig. 5 b), transition region 10 and the contact surface edges of quench-hardened case 9 to harden between (D ontologies)
The surface of layer 9 extends.The hardness of the transition region 10 is not higher than the hardness of basis material, while being lower than the hardness of quench-hardened case 9.Transition
The depth in area 10 is not more than 3.0mm.In a preferred embodiment, the depth of transition region 10 is not more than 1.5mm.
Embodiment 3
The hand-operated tools of the present embodiment is fixture, and by taking F is pressed from both sides as an example, but not limited to this.Fixture as shown in Figure 6 includes first
Clamp 13, the second clamp 14 and the rod piece 15 being arranged in the first clamp 13 and the second clamp 14, the first clamp 13 and the second folder
Body 14 can carry out opposite or reverse motions on rod piece 15, to realize clamping or the planning function.The rod piece 15 of F folder uses carbon
Steel or structural alloy steel are made.Rod piece 15 is torque-transmitting member, and first surface includes the first working face 151 and the of rod piece 15
Two working faces 152, as shown in fig. 6, the first working face 151 and the second working face 152 are located at the upper side and lower side of rod piece 15,
First clamp 13 and the second clamp 14 can carry out opposite or reverse motions along the first working face 151 and the second working face 152.It is right
First working face 151 of rod piece 15 carries out double frequency induction, i.e., is passed through high-frequency current simultaneously in same induction coil in
The electric current of frequency electric current, both different frequencies heats the first working face 151 and the second working face 152 and the first working face simultaneously
The shallow region of 151 or less, second 152 or more working face, is heated evenly, then passes through Cooling Quenching, in Cooling Quenching process
In, the first working face 151 and the second working face 152 and the first 151 or less working face, the second working face 152 of rod piece 15 with
On shallow region simultaneously quench, harden, thus in from the first working face 151 to the first depth bounds of the inside of rod piece 15
(i.e. the shallow region below of 151 to the first working face of the first working face 151) and out of second working face 152 to rod piece 15
(i.e. the shallow region of 152 to the second 152 or more working face of the second working face) is formed with quench-hardened case in first depth bounds in portion
16, quench-hardened case 16 is roughly parallel to the first working face 151 and the second working face 152, along the first working face 151 and the second working face
152 are uniformly distributed.The integral strength of this rod piece 15 that F is pressed from both sides increases, and improves the service life of F folder.
As shown in fig. 7, section is made to rod piece 15 along the axis direction C-C perpendicular to F clamping bar part 15, institute's shape on the section
At the contour line of quench-hardened case 16 be roughly parallel to the working face of rod piece 15, and the first working face 151 and the second work of rod piece 15
16 uniform depth of quench-hardened case made on face 152 is consistent, is uniformly distributed on entire rod piece 15.From the surface of rod piece 15 to rod piece 15
Inside measure inwards, be formed by quench-hardened case 16 depth be 0.3-8.0mm be formed by and quench in a preferred embodiment
The depth of hard formation 16 is 0.6-3.0mm.The hardness of the quench-hardened case 16 is higher than the hardness of the ontology of rod piece 15.
The advantage of the present embodiment for ease of description, Fig. 8, which is shown, uses high frequency sense to the rod piece 15 of F folder in the prior art
The case where should quenching as single-frequency induced current, when heated between it is shorter when, the first working face 151 of rod piece 15 and the second work
16 depth of quench-hardened case for making face 152 is respectively less than projected depth, and the depth of hardening of the first working face 151 and the second working face 152
Degree differs greatly.
The present embodiment is formed by the hardness of quench-hardened case 16 in 50HRC or more, in a preferred embodiment, quench-hardened case 16
Hardness be 54-62HRC；In a preferred embodiment, the hardness of quench-hardened case 16 is 58HRC.Quench-hardened case 16 and matrix
There are a narrow transition region 17 (see Fig. 7), the contacts of transition region 17 and quench-hardened case 16 between material (ontology of rod piece 15)
Face extends along the surface of quench-hardened case 16.The hardness of the transition region 17 is not higher than the hardness of basis material, while being lower than quench-hardened case 16
Hardness.The depth of transition region 17 is not more than 3.0mm.In a preferred embodiment, the depth of transition region 17 is not more than
1.5mm。
Embodiment 4
The hand-operated tools of the present embodiment be the spanner with ratchet ring 18, by taking zero degree combination wrenches as an example, but not as
Limit.As shown in figure 9, zero degree combination wrenches includes ratchet ring 18 and handle 19, which is located at the interior of one end of handle 19
In surface, the torque output block of zero degree combination wrenches is ratchet ring 18, the ratchet ring 18 using structural alloy steel, tool steel or
Bearing steel is made.First surface is the outer surface of ratchet ring 18.Double frequency induction is carried out to the outer surface of ratchet ring 18, that is, is existed
It is passed through high-frequency current and electric current of intermediate frequency simultaneously on same induction coil, the electric current of both different frequencies heats ratchet ring 18 simultaneously
Outer surface and the outer surface under shallow region, be heated evenly, then pass through Cooling Quenching, ratchet during Cooling Quenching
Outer surface and the outer surface shallow region below of ring 18 quench, harden simultaneously, thus from the outer surface of ratchet ring 18 to ratchet
(outer surface of ratchet ring 18 to outer surface shallow region below) is formed with and quenches in first depth bounds of the inside of ring 18
Hard formation 20 (see Figure 10), the quench-hardened case 20 uniformly divide substantially concentric to the outer surface of ratchet ring 18 along the outer surface of ratchet ring 18
Cloth.This makes ratchet ring 18 both be able to maintain the high rigidity and high-wearing feature of outer surface, while the inner surface of ratchet ring 18 keeps former
The lower hardness come, and preferable toughness, not broken can be kept on the whole, to improve zero degree two in actual use
With the service life of spanner.
Figure 10 is that the wheel of quench-hardened case 20 is formed by the section along the sectional view perpendicular to 18 axis direction of ratchet ring
Outer surface of the profile substantially concentric to ratchet ring 18, and 20 uniformity of quench-hardened case of ratchet ring 18 everywhere, in entire ratchet ring
It is uniformly distributed on 18.From the appearance of ratchet ring 18 towards the internal measurement of ratchet ring 18, the depth for being formed by quench-hardened case 20 is
0.3-8.0mm, in a preferred embodiment, the depth for being formed by quench-hardened case 20 is 0.6-3.0mm.The hardness of the quench-hardened case 20
Higher than the hardness of 18 ontology of ratchet ring.
The present embodiment is formed by the hardness of quench-hardened case 20 in 50HRC or more, in a preferred embodiment, quench-hardened case 20
Hardness be 54-62HRC；In a preferred embodiment, the hardness of quench-hardened case 20 is 58HRC.Quench-hardened case 20 and matrix
There are a narrow transition region 21 (see Figure 10) between material (ontology of ratchet ring 18), transition region 21 connects with quench-hardened case 20
Contacting surface extends along the surface of quench-hardened case 20.The hardness of the transition region 21 is not higher than the hardness of basis material, while being lower than quench-hardened case
20 hardness.The depth of transition region 21 is not more than 3.0mm.In a preferred embodiment, the depth of transition region 21 is not more than
1.5mm。
Embodiment 5
The hand-operated tools of the present embodiment is the ratchet screw driver (see Figure 11) with ratchet device, and but not limited to this.It should
The ratchet device of ratchet screw driver is torque-transmitting member, and as shown in figure 12, ratchet device includes ratchet 22 and pawl 23, is used
Iron-base sintered metal piece is made of carbon steel, structural alloy steel, tool steel.The outer surface of ratchet 22 and the outer surface are below
Shallow region and outer surface and the outer surface shallow region below of pawl 23 are simultaneously by high-frequency current and electric current of intermediate frequency
Heating, is heated evenly, then passes through Cooling Quenching.During Cooling Quenching, the outer surface of ratchet 22 and the outer surface are below
Shallow region and outer surface and the outer surface shallow region below of pawl 23 quench, harden simultaneously, therefore from ratchet 22
In outer surface to the first depth bounds of the inside of ratchet 22 (outer surface of ratchet 22 to outer surface shallow region below)
And from the outer surface of pawl 23 in the first depth bounds of the inside of pawl 23 (outer surface of pawl 23 to the outer surface with
Under shallow region) be formed with quench-hardened case 24 (see Figure 16)；Quench-hardened case 24 and the outer surface of ratchet 22 on ratchet 22 is concentric, edge
The outer surface of ratchet 22 is uniformly distributed；Quench-hardened case 24 and the outer surface of pawl 23 on pawl 23 is concentric, along the appearance of pawl 23
Face is uniformly distributed.The hardness of the quench-hardened case 24 is higher than the hardness of ratchet 22,23 ontology of pawl, the inside guarantor of ratchet 22, pawl 23
Original lower hardness condition is held, this makes ratchet 22, pawl 23 not only be able to maintain the excellent wearability in outer surface, but also is able to maintain interior
The excellent toughness of portion's matrix improves the service life of 22 screwdriver of ratchet.
As shown in figure 12, ratchet 22, pawl 23 are cutd open respectively along the axis direction E-E perpendicular to ratchet 22, pawl 23
Face is formed by outer surface of the contour line substantially concentric to ratchet 22, pawl 23 of quench-hardened case 24, and ratchet on the section
22,24 uniformity of quench-hardened case of pawl 23 everywhere, is uniformly distributed on entire ratchet 22, pawl 23 respectively.Respectively from ratchet
22, the outer surface of pawl 23 measures inwards, and the depth for being formed by quench-hardened case 24 is 0.3-8.0mm, in a preferred embodiment,
The depth for being formed by quench-hardened case 24 is 0.6-3.0mm.
The present embodiment is formed by the hardness of quench-hardened case 24 in 50HRC or more, in a preferred embodiment, quench-hardened case 24
Hardness be 54-62HRC；In a preferred embodiment, the hardness of quench-hardened case 24 is 58HRC.Quench-hardened case 24 and matrix
There are a narrow transition region 25 (see Figure 16) between material (ontology of ratchet 22, pawl 23 etc.), transition region 25 with harden
The contact surface of layer 25 extends along the surface of quench-hardened case 25.The hardness of the transition region 25 is not higher than the hardness of basis material, while low
In the hardness of quench-hardened case 24.The depth of transition region 25 is not more than 3.0mm.In a preferred embodiment, the depth of transition region 25
Degree is not more than 1.5mm.
Embodiment 6
The hand-operated tools of the present embodiment is to accelerate screwdriver (see Figure 13), as different from Example 5, the acceleration screwdriver
Other than ratchet 22, pawl 23, further include speedup planet tooth 28 take turns mechanism, speedup planet tooth 28 take turns mechanism include ring gear 26,
Sun gear 27 and planet tooth 28, the outer surface of ratchet 22 and the outer surface shallow region below, pawl 23 outer surface and should
Outer surface shallow region below, the outer surface of ring gear 26 and the outer surface shallow region below, sun gear 27 appearance
Face and the outer surface shallow region below and outer surface and the outer surface shallow region below of planet tooth 28 simultaneously by
The heating of high-frequency current and electric current of intermediate frequency, then passes through Cooling Quenching.During Cooling Quenching, the outer surface of ratchet 22 and should
Outer surface shallow region below, the outer surface of pawl 23 and the outer surface shallow region below, ring gear 26 outer surface
And outer surface shallow region below, the outer surface of sun gear 27 and the outer surface shallow region below and planet tooth 28
Outer surface and the outer surface shallow region below quench, harden simultaneously, therefore from ratchet 22, pawl 23, ring gear 26, the sun
(the outer surface of ratchet 22 to the appearance in wheel 27 and the respective outer surface of planet tooth 28 to the first depth bounds of respective inside
Face shallow region below, outer surface to the outer surface shallow region below of pawl 23, ring gear 26 outer surface to should
Outer surface shallow region below, outer surface to the outer surface shallow region below of sun gear 27, the appearance of planet tooth 28
Face to outer surface shallow region below) it is formed with quench-hardened case 24.The outer surface of quench-hardened case 24 and ratchet 22 on ratchet 22
With one heart, the outer surface along ratchet 22 is uniformly distributed；Quench-hardened case 24 and the outer surface of pawl 23 on pawl 23 is concentric, along pawl 23
Outer surface be uniformly distributed；Quench-hardened case 24 and the outer surface of ring gear 26 on ring gear 26 is concentric, along the appearance of ring gear 26
Face is uniformly distributed；Quench-hardened case 24 and the outer surface of sun gear 27 on sun gear 27 is concentric, and the outer surface along sun gear 27 is uniform
Distribution；Quench-hardened case 24 and the outer surface of planet tooth 28 on planet tooth 28 is concentric, and the outer surface along planet tooth 28 is uniformly distributed.It should
The hardness of quench-hardened case 24 is higher than the hardness of ratchet 22, pawl 23, ring gear 26, sun gear 27, the respective ontology of planet tooth 28, spine
The original lower hardness condition of the respective internal holding of wheel 22, pawl 23, ring gear 26, sun gear 27, planet tooth 28, this makes
The parts such as ratchet 22, pawl 23, ring gear 26, sun gear 27, planet tooth 28 be not only able to maintain the excellent wearability in outer surface, but also energy
The excellent toughness of inner base is kept to improve the service life for accelerating screwdriver.
As shown in figure 14, section is made to ratchet 22, pawl 23 respectively perpendicular to ratchet 22,23 axis direction F-F of pawl in edge,
Outer surface of the contour line substantially concentric to ratchet 22, pawl 23 of quench-hardened case 24, and ratchet 22, spine are formed by the section
24 uniformity of quench-hardened case of pawl 23 everywhere, is uniformly distributed on entire ratchet 22, pawl 23 respectively.Respectively from ratchet 22, spine
The outer surface of pawl 23 measures inwards, and the depth for being formed by quench-hardened case 24 is 0.3-8.0mm, in a preferred embodiment, institute's shape
At quench-hardened case 24 depth be 0.6-3.0mm.As shown in figure 15, along perpendicular to ring gear 26, sun gear 27,28 axis of planet tooth
G-G makees section to ring gear 26, sun gear 27, planet tooth 28 respectively respectively in line direction, is formed by quench-hardened case on the section
24 contour line substantially concentric to ring gear 26, sun gear 27, planet tooth 28 outer surface, and ring gear 26, sun gear 27, row
24 uniformity of quench-hardened case of star tooth 28 everywhere, is uniformly distributed on entire ring gear 26, sun gear 27, planet tooth 28 respectively.
It is measured inwards from the outer surface of ring gear 26, sun gear 27, planet tooth 28 respectively, the depth for being formed by quench-hardened case 24 is 0.3-
8.0mm, in a preferred embodiment, the depth for being formed by quench-hardened case 24 is 0.6-3.0mm.
The present embodiment is formed by the hardness of quench-hardened case 24 in 50HRC or more, in a preferred embodiment, quench-hardened case 24
Hardness be 54-62HRC；In a preferred embodiment, the hardness of quench-hardened case 24 is 58HRC.Quench-hardened case 24 and matrix
There are a narrow transition between material (ontology of ratchet 22, pawl 23, ring gear 26, sun gear 27, planet tooth 28 etc.)
The contact surface of area 25 (see Figure 16), transition region 25 and quench-hardened case 25 extends along the surface of quench-hardened case 25.The hardness of the transition region 25
Not higher than the hardness of basis material, while being lower than the hardness of quench-hardened case 24.The depth of transition region 25 is not more than 3.0mm.At one
In preferred embodiment, the depth of transition region 25 is not more than 1.5mm.
Embodiment 7
The embodiment compared as one, has selected more famous similar product in of the same trade: the water pump pliers of manufacturer 1,
Sample of the double frequency water pump pliers of the water pump pliers of manufacturer 2, the water pump pliers of manufacturer 3 and the application as folder torsional test, leads to
It crosses and double frequency induction processing is carried out to double frequency water pump pliers using the step of above-mentioned manufacturing method of the invention, and other three kinds of water pumps
Then pincers carry out folder torsional test by conventional single-frequency induction hardening.After clamping pole (torque 120N.M), manufacture
For the double frequency water pump pliers of the water pump pliers noticeable wear of quotient 1,2 water pump pliers of manufacturer and the application without abrasion, the water pump pliers of manufacturer 3 are light
Wiping.After clamping 25mm hexagonal, 6 obvious be collapseds of tooth of water pump pliers of manufacturer 1,1 tooth of water pump pliers of manufacturer 2 is obviously pressed
It collapses, 3 slight be collapseds of tooth of water pump pliers of manufacturer 3,1 slight be collapsed of tooth of double frequency water pump pliers of the application.Folder is turned round same zinc-plated
After water pipe 50 times, the water pump pliers serious wear of manufacturer 1, the water pump pliers of manufacturer 2 and the water pump pliers noticeable wear of manufacturer 3,
The double frequency water pump pliers mild wear of the application.It can be seen that compared with the pincers tooth of conventional single-frequency induction hardening, using double frequency sense
The wear-resistant situation for the pincers tooth for answering heating device to quench gets a promotion.
Embodiment 8
As the embodiment of another comparison, 10 cun of straight saliva pump pliers are selected, a, b, c of figure are the water pump pliers respectively
The teeth portion of binding clip after double frequency induction, does the cross section of binding clip in the before, during and after section of binding clip, and pass through respectively respectively
Inlay, polish, corroding the metallographic microscope of the shown binding clip quench-hardened case come out.Wherein double frequency district's groups are woven to acicular martensitic structure,
There is slight decarburization on surface close to teeth portion, and high-frequency quenching depth (depth of hardening zone) is respectively 2.83mm, 2.89mm, 2.47mm.
The quenching layer of the teeth portion of binding clip is evenly distributed, and centre is not likely to produce after stress and is collapsed, and increases the bite force of jaw.Transition region compared with
Small, matrix area tissue is secondary troostite tissue.
Several specific embodiments of the invention are described in detail in above embodiment.It should be appreciated that skill belonging to the present invention
The personnel in art field are understanding above-mentioned technical concept, specific embodiment and effect of the invention, can be with skill according to the present invention
Many modifications and variations are made in art design.Therefore, above-mentioned technical concept according to the present invention is led on the basis of existing technology
Logical analysis, reasoning, or a limited experiment are crossed to the technical solution obtained, should all be asked in claims of the present invention
In the protection scope asked.
Claims (31)
1. a kind of manufacturing method of hand-operated tools, which comprises the following steps:
The first surface of first surface or torque-transmitting member to the torque output block of the hand-operated tools carries out double frequency sense
It should quench, so that from the first surface of the torque output block to the first depth bounds of the inside of the torque output block
It is interior, or out of, the torque-transmitting member first surface to the first depth bounds of the inside of the torque-transmitting member, shape
At quench-hardened case, the hardness of the quench-hardened case is higher than the hardness of the ontology of the torque output block or the torque-transmitting member；
The double frequency induction is arranged on same induction coil while being passed through or importing high-frequency current and electric current of intermediate frequency,
The high-frequency current and the electric current of intermediate frequency are simultaneously to the first surface or the torque-transmitting member of the torque output block
First surface heated, the torque output block or the torque-transmitting member are then subjected to Cooling Quenching again.
2. the manufacturing method according to claim 1, which is characterized in that first depth is 0.3~8.0mm.
3. the manufacturing method according to claim 1, which is characterized in that the double frequency induction make the quench-hardened case and
Transition region is formed between the ontology of the torque output block, the hardness of the transition region is hard not higher than the quench-hardened case
Degree, and the hardness of the ontology lower than the torque output block.
4. according to claim 3 or the manufacturing method, which is characterized in that the first surface of the torque output block passes through
After double frequency induction, region of the ontology of the torque output block in addition to the quench-hardened case and the transition region keeps former
There is hardness constant.
5. the manufacturing method according to claim 1, which is characterized in that the double frequency induction make the quench-hardened case and
Transition region is formed between the ontology of the torque-transmitting member, the hardness of the transition region is hard not higher than the quench-hardened case
Degree, and the hardness of the ontology lower than the torque-transmitting member.
6. manufacturing method according to claim 5, which is characterized in that the first surface of the torque-transmitting member is by double
After frequency impewdance matching, region of the ontology of the torque-transmitting member in addition to the quench-hardened case and the transition region keeps original
Hardness is constant.
7. the manufacturing method according to claim 1, which is characterized in that using induction heating apparatus to the torque output section
The first surface of the first surface of part or the torque-transmitting member is heated, and the induction heating apparatus includes the induction
Coil.
8. manufacturing method according to claim 7, which is characterized in that in the induction heating apparatus, the high-frequency electrical
The frequency range of stream is 100-500KHz, power bracket 5-1500KW.
9. manufacturing method according to claim 7, which is characterized in that in the induction heating apparatus, the medium frequency electric
The frequency range of stream is 0.2-25KHz, power bracket 5-1500KW.
10. the manufacturing method according to claim 1, which is characterized in that the medium that the Cooling Quenching uses is quenching oil
Or PAG water-soluble hardening media.
11. the manufacturing method according to claim 1, which is characterized in that the manufacturing method further includes quenching in double frequency induction
After fire, tempering is carried out to the hand-operated tools, tempering temperature is 160-400 DEG C, soaking time 2-8h.
12. the manufacturing method according to claim 1, which is characterized in that further comprising the steps of:
Raw material metal is provided；
By the raw material metal by the requirement machine-shaping of hand-operated tools, make the hand-operated tools have torque output block or
Torque-transmitting member.
13. manufacturing method according to claim 12, which is characterized in that the raw material metal be powdered metallurgical material,
Carbon steel, structural alloy steel or tool steel class raw material.
14. the manufacturing method according to claim 1, which is characterized in that the hand-operated tools is to be driven by tooth-shape structure
Product.
15. a kind of manufacturing method of hand-operated tools, which comprises the following steps:
Raw material metal is provided；
By the raw material metal by the requirement machine-shaping of hand-operated tools, make the hand-operated tools have torque output block or
Torque-transmitting member；
The first surface of first surface or the torque-transmitting member to the torque output block carries out double frequency induction,
So that out of, the torque output block first surface to the first depth bounds of the inside of the torque output block, or from
In the first surface of the torque-transmitting member to the first depth bounds of the inside of the torque-transmitting member, formation is hardened
Layer, the hardness of the quench-hardened case are higher than the hardness of the ontology of the torque output block or the torque-transmitting member；
The double frequency induction is arranged on same induction coil while being passed through or importing high-frequency current and electric current of intermediate frequency,
The high-frequency current and the electric current of intermediate frequency are simultaneously to the first surface or the torque-transmitting member of the torque output block
First surface heated, the torque output block or the torque-transmitting member are then subjected to Cooling Quenching again；
After double frequency induction, tempering is carried out to the hand-operated tools.
16. a kind of hand-operated tools, which is characterized in that the hand-operated tools includes at least torque output block or torque transfer part
Part, out of, the torque output block first surface to the first depth bounds of the inside of the torque output block, or from
In the first surface of the torque-transmitting member to the first range of the inside of the torque-transmitting member, it is formed with quench-hardened case,
The process that the quench-hardened case is formed are as follows: same using the high-frequency current and electric current of intermediate frequency that are passed through or import simultaneously on same induction coil
When the first surface of the torque output block or torque-transmitting member is heated, then again by the torque output block
Or the torque-transmitting member carries out Cooling Quenching.
17. hand-operated tools according to claim 16, which is characterized in that it is defeated that the hardness of the quench-hardened case is higher than the torque
The hardness of the ontology of component or the torque-transmitting member out.
18. hand-operated tools according to claim 16, which is characterized in that first depth is 0.3~8.0mm.
19. hand-operated tools according to claim 16, which is characterized in that the quench-hardened case and the torque output block
Transition region is formed between ontology, the hardness of the transition region is not higher than the hardness of the ontology of the torque output block, and low
In the hardness of the quench-hardened case.
20. hand-operated tools according to claim 16, which is characterized in that the double frequency induction makes the quench-hardened case
Transition region is formed between the ontology of the torque-transmitting member, the hardness of the transition region is hard not higher than the quench-hardened case
Degree, and the hardness of the ontology lower than the torque-transmitting member.
21. hand-operated tools described in 9 or 20 according to claim 1, which is characterized in that the transition region connects with the quench-hardened case
Contacting surface extends along the surface of quench-hardened case.
22. hand-operated tools according to claim 19, which is characterized in that the depth of the transition region is not more than 3.0mm.
23. hand-operated tools according to claim 16, which is characterized in that the hardness of the quench-hardened case is greater than 50HRC.
24. hand-operated tools according to claim 16, which is characterized in that the quench-hardened case is along the torque output block
The first surface of first surface or the torque-transmitting member extends.
25. hand-operated tools according to claim 24, which is characterized in that the hand-operated tools is clamp type tool, the pincers
The binding clip of class tool is the torque output block, and the outer surface of the teeth portion of the binding clip is the first surface, the teeth portion
Heating by the high-frequency current and the electric current of intermediate frequency simultaneously, and after Cooling Quenching, from the outer surface of the teeth portion
It is formed with the quench-hardened case in first depth bounds of the inside of the teeth portion, the quench-hardened case is along the outer of the teeth portion
Profile is uniformly distributed.
26. hand-operated tools according to claim 24, which is characterized in that the hand-operated tools is spanner, the spanner packet
Include handle and the torque output block of the first end of the handle be set, the outer surface of the torque output block simultaneously by
The heating of the high-frequency current and the electric current of intermediate frequency, and after Cooling Quenching, from the outer surface of the torque output par, c
Be formed with the quench-hardened case in first depth bounds of the inside of the torque output block, the quench-hardened case with it is described
The outer surface of torque output par, c is concentric, and the outer surface along the torque output par, c is uniformly distributed.
27. hand-operated tools according to claim 24, which is characterized in that the hand-operated tools is fixture, the fixture packet
Rod piece is included, the rod piece has the first working face and the second working face, and first working face and second working face are simultaneously
By the heating of the high-frequency current and the electric current of intermediate frequency, and after Cooling Quenching, from first working face to described
In first depth bounds of the inside of rod piece and from second working face to described the first of the inside of the rod piece
The quench-hardened case is formed in depth bounds, the quench-hardened case is roughly parallel to first working face and second work
Face is uniformly distributed along first working face and the second working face.
28. hand-operated tools according to claim 27, which is characterized in that first working face is located at and second work
Make on the opposite position in face, first clamp and second clamp can be along first working faces and second work
Face carries out opposite or reverse motions.
29. hand-operated tools according to claim 24, which is characterized in that the hand-operated tools is pulling with ratchet ring
Hand, the heating by the high-frequency current and the electric current of intermediate frequency simultaneously of the outer surface of the ratchet ring, and pass through Cooling Quenching
Afterwards, from the outer surface of the ratchet ring to being formed with described harden in first depth bounds of the inside of the ratchet ring
Layer, the outer surface of the quench-hardened case and the ratchet ring is concentric, and the outer surface along the ratchet ring is uniformly distributed.
30. hand-operated tools according to claim 24, which is characterized in that the hand-operated tools is the spine with ratchet device
Take turns screwdriver, the ratchet device includes ratchet and pawl, the outer surface of the outer surface of the ratchet and the pawl simultaneously by
To the heating of the high-frequency current and the electric current of intermediate frequency, and after Cooling Quenching, from the outer surface of the ratchet to described
In first depth bounds of the inside of ratchet and from the outer surface of the pawl to described the of the inside of the pawl
The quench-hardened case is formed in one depth bounds；The outer surface of quench-hardened case and the ratchet on the ratchet is concentric, along described
The outer surface of ratchet is uniformly distributed；The outer surface of quench-hardened case and the pawl on the pawl is concentric, along the outer of the pawl
Surface is uniformly distributed.
31. hand-operated tools according to claim 29, which is characterized in that the ratchet screw driver further includes speedup planet tooth
Mechanism is taken turns, the speedup planetary gear mechanism includes ring gear, sun gear and planet tooth, the outer surface of the ring gear, described
The outer surface of sun gear and the heating by the high-frequency current and the electric current of intermediate frequency simultaneously of the outer surface of the planet tooth, and
The first depth after Cooling Quenching, from the ring gear, sun gear and the respective outer surface of planet tooth to respective inside
The quench-hardened case is formed in range；The outer surface of quench-hardened case and the ring gear on the ring gear is concentric, along described interior
The outer surface of gear ring is uniformly distributed；The outer surface of quench-hardened case and the sun gear on the sun gear is concentric, along the sun
The outer surface of wheel is uniformly distributed；The outer surface of quench-hardened case and the planet tooth on the planet tooth is concentric, along the planet tooth
Outer surface be uniformly distributed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711079865.1A CN109746845A (en) | 2017-11-06 | 2017-11-06 | A hand tool and its manufacturing method |
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| CN201711079865.1A CN109746845A (en) | 2017-11-06 | 2017-11-06 | A hand tool and its manufacturing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119662938A (en) * | 2025-02-15 | 2025-03-21 | 亚联机械制造(唐山)有限公司 | Heat treatment process for improving hardness of inner hole of roller rod |
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| CN119662938A (en) * | 2025-02-15 | 2025-03-21 | 亚联机械制造(唐山)有限公司 | Heat treatment process for improving hardness of inner hole of roller rod |
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