CN109693081A - The processing technology and structure of a kind of Intelligent central swivel joint center rotating shaft - Google Patents
The processing technology and structure of a kind of Intelligent central swivel joint center rotating shaft Download PDFInfo
- Publication number
- CN109693081A CN109693081A CN201811610705.XA CN201811610705A CN109693081A CN 109693081 A CN109693081 A CN 109693081A CN 201811610705 A CN201811610705 A CN 201811610705A CN 109693081 A CN109693081 A CN 109693081A
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- China
- Prior art keywords
- rotating shaft
- hole
- swivel joint
- center
- carbon fiber
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/02—Machine tools for performing different machining operations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses the processing technology and structure of a kind of Intelligent central swivel joint center rotating shaft, the processing technology includes rough turn → friction welding → heat treatment → deep hole machining → smart car → milling → high-frequency quenching → peripheral milling etc..It include axial hole and radial hole equipped with several L-shaped connections in the rotating shaft, several axial holes are uniformly distributed around the axis of rotating shaft, the port of several radial holes is arranged on the cylindrical surface of rotating shaft, and it is corresponding with the position of the radial hole on revolving body, carbon fiber casing is equipped in the axial hole and radial hole of the rotating shaft, the carbon fiber casing is located at the rounded smooth transition in turn position that axial hole intersects with radial hole, is attached with plastic foil or plastic bushing in the axial hole of the rotating shaft and the inner wall of radial hole.Center-rotary joint center revolution axle construction has the features such as structure simple, easy making process, can reduce fluid in swivel joint internal pressure loss, reduce rotating shaft structure size and weight.
Description
Technical field
The present invention relates to hydropneumatics to convey pipe fitting technical field, and in particular to a kind of Intelligent central swivel joint center is returned
The processing technology of shaft and the structure of Intelligent central swivel joint center rotating shaft.
Background technique
In the hydraulic system of heavily loaded engineering machinery, opposite revolution and fixation member, usually by center-rotary joint come
Control the connection of the fluid passage and circuit of rotating part and fixed part.Center-rotary joint be by revolving body, rotating shaft and
The composition such as lid is put down on the mounting plate and revolution on rotating shaft in use, revolving body and the revolution lower platform of engineering machinery are fixed
Revolving support on platform is connected.
Previous excavator is mostly wheeled or walking, the center-rotary joint that wheel excavator and walking use
Hydraulic channel number is 16 and 8, and the hydraulic channel of this conventional center-rotary joint is less, therefore can not achieve excavator
Or more movements of comparable mechanical, such as the climbing function of excavator, therefore it is not able to satisfy Science & Technology Demands growing now.
In the prior art, center-rotary joint center rotating shaft is all to pass through open die forging → milling → thick by rough casting
The techniques such as vehicle → smart car → honing complete the process, using the expense of both taking a lot of work of above-mentioned technique processing center-rotary joint center rotating shaft
When, it is also larger to the waste of raw material, therefore cause the processing and manufacturing of center-rotary joint center revolution shaft-like work at high cost, add
Working medium amount is difficult to ensure.
In addition, the axial hole and radial hole in rotating shaft in existing swivel joint are by being machined into, due to two
A orthogonal hole after processing must be there are by the groove of extra processing and acute angle intersection, these grooves are mutually passed through with acute angle
Line causes the loss of Fluid pressure when fluid flows through the intersection area of axial hole and radial hole, if in the entire system there are
The whole energy consumption chance of the loss of multiple above-mentioned Fluid pressures, fluid transmission increases, while will also result in other positions in system
Pressure increase.The increase of pressure will also cause the increase of the structure size of many devices and the increase of cost in system.If adopting
The rotating shaft in swivel joint is manufactured with casting method, although the pressure loss caused by processing structure is addressed on can overcoming,
Be due to casting there are tissue looseness, stomata, trachoma the defects of, just must be by the center between increase and decrease Kong Yukong away from overcoming
The problem of breakdown that high-pressure delivery fluid-type may cause, will definitely increase the structure ruler of swivel joint center rotating shaft in this way
It is very little, it is therefore necessary to which that the structure of existing swivel joint is improved.
Summary of the invention
It is an object of the present invention to overcome defect existing in the prior art, provide a kind of simple structure, easy making process,
Raw material can be saved, the processing efficiency of center-rotary joint center rotating shaft can be improved, processing quality can be improved, stream can be reduced
Body reduces a kind of center-rotary joint center rotating shaft of rotating shaft structure size and weight in swivel joint internal pressure loss
Processing technology and structure.
To achieve the above object, the technical scheme is to design a kind of Intelligent central swivel joint center rotating shafts
Processing technology, the processing technology comprise the technical steps that:
S1: rough turn processing is machined to set respectively to the short tubular and the rough turn processing of elongate tubular workpiece progress after forging molding
Fixed structure size；
S2: friction welding, will be rough turn after short tubular and elongate tubular workpiece be welded into a whole structure by friction-welding machine；
S3: the radial hole being arranged on central rotating shaft and axial hole are machined to setting ruler after friction welding by deep hole machining
It is very little；
S4: the rotating shaft after deep hole machining is carried out modifier treatment by heat treatment；
S5: smart car carries out finishing processing to the central rotating shaft after heat treatment；
S6: milling hydraulic fluid port carries out Milling Process to hydraulic oil interface, and processes hickey；
S7: the central rotating shaft after smart car is carried out surface high frequency quenching with high-frequency quenching equipment by surface high frequency quenching；
S8: peripheral milling carries out grinding with outer circle of the cylindrical grinder to central rotating shaft；
S9: examining storage, and the central rotating shaft after mill processing to foreign round is detected, and detects warehousing after passing.
In order to improve the processing efficiency of friction welding, preferred technical solution is, same in the S3 friction welding work step
When the cutting burrs that will be generated in friction welding.
Axle construction is turned round in a kind of Intelligent central swivel joint center, includes being equipped with several L-shaped companies in the rotating shaft
Logical axial hole and radial hole, several axial holes are uniformly distributed around the axis of rotating shaft, and the port setting of several radial holes exists
On the cylindrical surface of rotating shaft, and it is corresponding with the position of the radial hole on revolving body, in the axial hole and radial direction of the rotating shaft
Carbon fiber casing is equipped in hole, it is rounded smoothed that the carbon fiber casing is located at the turn position that axial hole intersects with radial hole
It crosses.
When rotating shaft in processing and fabricating center-rotary joint, first it will can go out rotating shaft with mold injection, it can before injection molding
First several carbon fiber pipes are placed in mold, are then moulded in several L-shaped carbon fiber pipes in rotating shaft together.?
It can be first molded by the internal rotating shaft for having several L-shaped axial holes and radial hole, then again by several L-shaped carbon
Fibre pipe is packed into several L-shaped axial holes and radial hole.
Since carbon fiber has both the strong stretching resistance of carbon material and the big feature of fiber softening machinability two, carbon fiber is a kind of
The new material of excellent in mechanical performance.Carbon fiber tensile strength is about 2 to 7GPa, and stretch modulus is about 200 to 700GPa.Density is about
Per cubic centimeter for 1.5 to 2.0 grams, this, which is removed, the temperature for depending mainly on charing process outside the Pass with precursor structure.It is general to pass through
3000 DEG C of graphitization processings of high temperature, density is up to 2.0 grams every cube li.Along with its very light in weight, its specific gravity is also than aluminium
Light, less than the 1/4 of steel, specific strength is 20 times of iron.Therefore it is used as the casing of rotating shaft using carbon fiber, can greatly improves
The tube wall of carbon fiber casing can be made thin by its compressive resistance, and the wall thickness between axial hole can also be made thin, Er Qieke
It to use moulding as the main body of rotating shaft, thus can greatly reduce the structure size and weight of rotating shaft, improve life
Produce efficiency very durability.
In order to flow through fluid smoothly in the axial hole and radial hole of rotating shaft, rubbing between tube wall is reduced
Power is wiped, preferred technical solution is to be attached with plastic foil or plastic sheath in the axial hole of the rotating shaft and the inner wall of radial hole
Pipe.
For the ease of the combination of rotating shaft axial hole inner wall and rotating shaft radial hole inner wall and plastic foil or plastic bushing, into
The preferred technical solution of one step is that institute's plastic foil is adhered to by plastic-spraying or hot melt with the inner wall of axial hole and radial hole.
For the ease of the combination of rotating shaft axial hole inner wall and rotating shaft radial hole inner wall and plastic foil or expected casing, together
When avoid interfering with hickey end, preferred technical solution is in addition, the both ends of institute's plastic foil or plastic bushing terminate in
Within the threaded connection section of axial hole and radial hole port.
For the ease of improving the processing efficiency of rotating shaft, mitigate the weight of rotating shaft, further preferred technical solution is also
Have, the main body of the rotating shaft is moulding.
For the ease of mitigating the weight of rotating shaft, the structure size of rotating shaft is reduced, preferred technical solution is in addition, described
Several axial holes surround the axis close-packed arrays of rotating shaft.
For the ease of being suitable for different processing technologys, further preferred technical solution is in addition, the carbon fiber casing
It for hard carbon fiber sleeve or is soft carbon fiber sleeve.
In order to be suitable for the rotating shaft of different model, different purposes, further preferred technical solution is in addition, the carbon fiber
The diameter for tieing up casing is 0.2~600mm, and length is 10~6000mm, and wall thickness is 0.2~50mm.
The advantages and beneficial effects of the present invention are: the processing technology and intelligence of the Intelligent central swivel joint center rotating shaft
The structure of energy center-rotary joint center rotating shaft is simple with structure, easy making process, can save raw material, and center can be improved
The processing efficiency of swivel joint center rotating shaft, can be improved processing quality, can reduce fluid in swivel joint internal pressure loss, subtract
The features such as small rotating shaft structure size and weight.By being set with carbon fiber casing in axial hole and radial hole, tube wall can be made
Compressive resistance is significantly improved.It, can be by original returning with steel processing and fabricating under the premise of improving compressive resistance
Shaft main body uses injection molding instead, both improves processing efficiency in this way, reduces weight and processing cost, due to carbon fiber
Dimension pipe has very high internal pressure strength, therefore the spacing between Guan Yuguan can be contracted to be bonded to each other, and can thus subtract
Small structure size.It, can be great since the axial hole of carbon fiber pipe and radial hole intersection area are made into rounding off
Reduce the pressure loss caused by fluid flows through the position and is, while being lacked also superior to casting rotating shaft tissue looseness, stomata, trachoma etc.
It falls into.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of revolution axle construction in center-rotary joint center of the present invention.
In figure: 1, rotating shaft；2, axial hole；3, radial hole；4, carbon fiber casing；5, plastic foil；6, threaded connection section.
Specific embodiment
With reference to the accompanying drawings and examples, further description of the specific embodiments of the present invention.Following embodiment is only
For clearly illustrating technical solution of the present invention, and not intended to limit the protection scope of the present invention.
A kind of processing technology of Intelligent central swivel joint center rotating shaft, the processing technology include following technique step
It is rapid:
Step 1: rough turn processing, respectively to the short tubular and the rough turn processing of elongate tubular workpiece progress after forging molding, processing
To the structure size of setting；
Step 2: friction welding, will be rough turn after short tubular be welded into a whole with elongate tubular workpiece by friction-welding machine
Structure；
Step 3: deep hole machining, the radial hole being arranged on central rotating shaft after friction welding be machined to set with axial hole
Scale cun；
Step 4: heat treatment, carries out modifier treatment for the rotating shaft after deep hole machining；
Step 5: smart car, carries out finishing processing to the central rotating shaft after heat treatment；
Step 6: milling hydraulic fluid port, carries out Milling Process to hydraulic oil interface, and process hickey；
Step 7: surface high frequency quenches, the central rotating shaft after smart car is subjected to surface high frequency with high-frequency quenching equipment and is quenched
Fire；
Step 8: peripheral milling, carries out grinding with outer circle of the cylindrical grinder to central rotating shaft；
Step 9: examining storage, the central rotating shaft after mill processing to foreign round is detected, and detects warehousing after passing.
In friction welding process, materials to be welded is usually non-fusible, and still in solid state shape, weld metal is forging group
It knits.Compared with fusion welding, in the Forming Mechanism and aspect of performance of welding point, there is significant differences.Firstly, friction welding
Head do not generate some welding defects related with melting and solidification metallurgy and welding embrittlement, such as coarse column crystal, segregation,
It is mingled with, crackle and stomata etc.；Secondly, axial compressive force and torque collective effect are produced in friction-welding surface and its proximity
Some mechanics metallurgical effects, if crystal grain refinement, dense structure, field trash Dispersed precipitate and friction-welding surface are " from clearly
Reason " effect etc.；Furthermore the friction welding time is short, and heat affected area is narrow, and heat affected zone organization is without obvious roughening.Materials to be welded is usual
Non-fusible, still in solid state shape, weld metal is forging tissue, and Tensile strength is up to 632MPa, finished product burst pressure
Power is greater than 100~180MPa.
In order to improve the processing efficiency of friction welding, the preferred embodiment of the invention is, in the S3 friction welding work
The cutting burrs that will be generated in friction welding simultaneously in step.
As shown in Figure 1, the present invention is a kind of Intelligent central swivel joint center revolution axle construction, wrapped in the rotating shaft 1
Axial hole 2 and radial hole 3 equipped with several L-shaped connections are included, several axial holes 2 are uniformly distributed around the axis of rotating shaft 1, if
The port of dry radial hole 3 is arranged on the cylindrical surface of rotating shaft 1, and corresponding with the position of the radial hole on revolving body,
It is equipped with carbon fiber casing 4 in the axial hole 2 and radial hole 3 of the rotating shaft 1, the carbon fiber casing 4 is located at axial hole 2 and diameter
The rounded smooth transition in turn position intersected to hole 3.
When rotating shaft 1 in processing and fabricating center-rotary joint, first it will can go out rotating shaft 1 with mold injection, before injection molding
First several carbon fiber casings 4 can be placed in mold, then be moulded in back several L-shaped carbon fiber casings 4 together
In shaft 1.Inside, which can also be first molded by, the axial hole 2 of several L-shaped connections and the rotating shaft 1 of radial hole 3, then
Several L-shaped carbon fiber casings 4 are packed into the axial hole 2 and radial hole 3 of several L-shaped connections again.
Since carbon fiber has both the strong stretching resistance of carbon material and the big feature of fiber softening machinability two, carbon fiber is a kind of
The new material of excellent in mechanical performance.Carbon fiber tensile strength is about 2 to 7GPa, and stretch modulus is about 200 to 700GPa.Density is about
Per cubic centimeter for 1.5 to 2.0 grams, this, which is removed, the temperature for depending mainly on charing process outside the Pass with precursor structure.It is general to pass through
3000 DEG C of graphitization processings of high temperature, density is up to 2.0 grams every cube li.Along with its very light in weight, its specific gravity is also than aluminium
Light, less than the 1/4 of steel, specific strength is 20 times of iron.Therefore it is used as the casing of rotating shaft using carbon fiber, can greatly improves
The tube wall of carbon fiber casing can be made thin by its compressive resistance, and the wall thickness between axial hole can also be made thin, Er Qieke
It to use moulding as the main body of rotating shaft, thus can greatly reduce the structure size and weight of rotating shaft, improve life
Produce efficiency very durability.
In order to flow through fluid smoothly in the axial hole 2 and radial hole 3 of rotating shaft 1, reduce between tube wall
Frictional force, the preferred embodiment of the invention is, is attached with modeling in the axial hole 2 of the rotating shaft 1 and the inner wall of radial hole 3
Expect film 5 or plastic bushing.
For the ease of 2 inner wall of axial hole of rotating shaft 1 and 3 inner wall of radial hole of rotating shaft and plastic foil or plastic bushing
It is that institute's plastic foil 5 passes through plastic-spraying or hot melt and axial hole 2 and radial hole 3 in conjunction with, further preferred embodiment of the present invention
Inner wall attachment.
For the ease of 2 inner wall of axial hole of rotating shaft 1 and 3 inner wall of radial hole of rotating shaft and plastic foil or expected casing
In conjunction with, while avoiding interfering with hickey end, the preferred embodiment of the invention is in addition, institute's plastic foil 5 or plastics
The both ends of casing terminate within the threaded connection section 6 of 3 port of axial hole 2 and radial hole.
For the ease of improving the processing efficiency of rotating shaft, mitigate the weight of rotating shaft, the further preferred implementation of the present invention
Scheme is in addition, the main body of the rotating shaft 1 is moulding.
For the ease of mitigating the weight of rotating shaft, the structure size of rotating shaft is reduced, the preferred embodiment of the invention is also
Have, several described axial holes 2 surround the axis close-packed arrays of rotating shaft 1.
For the ease of being suitable for different processing technologys, further preferred embodiment of the present invention is in addition, the carbon fiber
Dimension casing 4 is hard carbon fiber sleeve or is soft carbon fiber sleeve.
In order to be suitable for the rotating shaft of different model, different purposes, further preferred embodiment of the present invention is in addition, institute
The diameter for stating carbon fiber casing is 0.2~600mm, and length is 10~6000mm, and wall thickness is 0.2~50mm.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of processing technology of Intelligent central swivel joint center rotating shaft, which is characterized in that the processing technology includes such as
Lower processing step:
S1: rough turn processing is machined to setting respectively to the short tubular and the rough turn processing of elongate tubular workpiece progress after forging molding
Structure size；
S2: friction welding, will be rough turn after short tubular and elongate tubular workpiece be welded into a whole structure by friction-welding machine；
S3: the radial hole being arranged on central rotating shaft is machined to be sized by deep hole machining after friction welding with axial hole；
S4: the central rotating shaft after deep hole machining is carried out modifier treatment by heat treatment；
S5: smart car carries out finishing processing to the rotating shaft after heat treatment；
S6: milling hydraulic fluid port carries out Milling Process to hydraulic oil interface, and processes hickey；
S7: the central rotating shaft after smart car is carried out surface high frequency quenching with high-frequency quenching equipment by surface high frequency quenching；
S8: peripheral milling carries out grinding with outer circle of the cylindrical grinder to central rotating shaft；
S9: examining storage, and the central rotating shaft after mill processing to foreign round is detected, and detects warehousing after passing.
2. the processing technology of Intelligent central swivel joint as described in claim 1 center rotating shaft, which is characterized in that described
The cutting burrs that will be generated in friction welding simultaneously in S3 friction welding work step.
It include being equipped with several L-shaped connections in the rotating shaft 3. axle construction is turned round in a kind of Intelligent central swivel joint center
Axial hole and radial hole, several axial holes are uniformly distributed around the axis of rotating shaft, and the port setting of several radial holes is being returned
On the cylindrical surface of shaft, and it is corresponding with the position of the radial hole on revolving body, which is characterized in that in the axial direction of the rotating shaft
Carbon fiber casing is equipped in hole and radial hole, it is in circle that the carbon fiber casing, which is located at the turn position that axial hole intersects with radial hole,
Angle smooth transition.
4. axle construction is turned round in Intelligent central swivel joint as claimed in claim 3 center, which is characterized in that in the rotating shaft
Axial hole and the inner wall of radial hole be attached with plastic foil or plastic bushing.
5. axle construction is turned round in Intelligent central swivel joint as claimed in claim 4 center, which is characterized in that institute's plastic foil passes through
Plastic-spraying or hot melt adhere to the inner wall of axial hole and radial hole.
6. axle construction is turned round in Intelligent central swivel joint as claimed in claim 5 center, which is characterized in that institute's plastic foil or modeling
The both ends of material casing terminate within the threaded connection section of axial hole and radial hole port.
7. axle construction is turned round in Intelligent central swivel joint as claimed in claim 6 center, which is characterized in that the rotating shaft
Main body is moulding.
8. axle construction is turned round in Intelligent central swivel joint as claimed in claim 7 center, which is characterized in that several described axis
The axis close-packed arrays of rotating shaft are surrounded to hole.
9. axle construction is turned round in Intelligent central swivel joint as claimed in claim 8 center, which is characterized in that the carbon fiber set
Pipe is hard carbon fiber sleeve or is soft carbon fiber sleeve.
10. axle construction is turned round in Intelligent central swivel joint as claimed in claim 9 center, which is characterized in that the carbon fiber
The diameter of casing is 0.2~600mm, and length is 10~6000mm, and wall thickness is 0.2~50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811610705.XA CN109693081A (en) | 2018-12-27 | 2018-12-27 | The processing technology and structure of a kind of Intelligent central swivel joint center rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811610705.XA CN109693081A (en) | 2018-12-27 | 2018-12-27 | The processing technology and structure of a kind of Intelligent central swivel joint center rotating shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109693081A true CN109693081A (en) | 2019-04-30 |
Family
ID=66232907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811610705.XA Pending CN109693081A (en) | 2018-12-27 | 2018-12-27 | The processing technology and structure of a kind of Intelligent central swivel joint center rotating shaft |
Country Status (1)
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| CN (1) | CN109693081A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010033881A1 (en) * | 2010-08-10 | 2012-02-16 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
| CN105889059A (en) * | 2016-05-31 | 2016-08-24 | 宁波派锐森液压有限公司 | Hollow plunger and machining technology thereof |
| CN107511644A (en) * | 2017-09-29 | 2017-12-26 | 陈秋 | A kind of high intensity, the green intelligence of super abrasive cylinder sleeve make method |
| CN108331677A (en) * | 2018-04-03 | 2018-07-27 | 滨州东海龙活塞有限公司 | A kind of welded type entirety forging steel piston and its manufacturing process |
| CN108413155A (en) * | 2018-02-06 | 2018-08-17 | 江阴市长龄机械制造有限公司 | Axle construction is turned round in a kind of center-rotary joint |
-
2018
- 2018-12-27 CN CN201811610705.XA patent/CN109693081A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010033881A1 (en) * | 2010-08-10 | 2012-02-16 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
| CN105889059A (en) * | 2016-05-31 | 2016-08-24 | 宁波派锐森液压有限公司 | Hollow plunger and machining technology thereof |
| CN107511644A (en) * | 2017-09-29 | 2017-12-26 | 陈秋 | A kind of high intensity, the green intelligence of super abrasive cylinder sleeve make method |
| CN108413155A (en) * | 2018-02-06 | 2018-08-17 | 江阴市长龄机械制造有限公司 | Axle construction is turned round in a kind of center-rotary joint |
| CN108331677A (en) * | 2018-04-03 | 2018-07-27 | 滨州东海龙活塞有限公司 | A kind of welded type entirety forging steel piston and its manufacturing process |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190430 |
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| RJ01 | Rejection of invention patent application after publication |