CN111774619A

CN111774619A - Deburring cutter

Info

Publication number: CN111774619A
Application number: CN202010748882.5A
Authority: CN
Inventors: 周加朋; 卢高
Original assignee: Wuxi Haopu Technology Co ltd
Current assignee: Wuxi Haopu Technology Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2020-10-16

Abstract

The embodiment of the application discloses a deburring tool, which comprises a tool bar, a blade, a spring piece, a pin and a positioning pin; a first connecting part and a second connecting part extend from one end of the cutter bar, an accommodating groove is formed between the first connecting part and the second connecting part, and a pin is accommodated in the accommodating groove; the side surface of the pin is provided with an opening, the blade comprises a connecting ring and a cutting part, the blade is sleeved on the side surface of the pin through the connecting ring, and the opening is positioned in the connecting ring when the blade is sleeved on the side surface of the pin; one end of the spring piece is provided with a positioning hole, the side surface of the cutter bar is provided with a positioning pin hole, the positioning pin hole is aligned with the positioning hole, the positioning pin penetrates through the positioning hole and the positioning pin hole, one end of the spring piece is fixed with the cutter bar through the positioning pin, and the other end of the spring piece is embedded into the connecting ring and is embedded into the opening of the pin. In this application, the burr in positive and negative drill way is got rid of in burring cutter one-time operation realization, has improved burring efficiency, and detachable design has also improved the holistic life of cutter.

Description

Deburring cutter

Technical Field

The embodiment of the application relates to the field of mechanical drilling, in particular to a deburring cutter.

Background

In the mechanical industry, the surfaces of workpieces are mostly provided with through-holes, which can be used for further assembly or processing between the workpieces.

The through hole is usually formed by a milling and drilling machine, the inner wall and the edge of the hole cannot be guaranteed to be smooth, a plurality of burrs are left on the inner wall and the edge of the hole, the technical requirements of products cannot be met if the burrs are left on the inner wall and the edge of the hole, and further assembly of a workpiece is also influenced.

In the related art, various deburring tools are provided for removing the above-mentioned burrs, and such tools are rotated to remove the burrs from the side walls of the through-hole in use. However, the conventional deburring tool is expensive and not durable, and the complex through hole needs to be repeatedly implemented or multiple types of deburring tools are combined for use, so that the efficiency is low and the side wall of the through hole is possibly scratched.

Disclosure of Invention

The embodiment of the application provides a deburring cutter. The technical scheme is as follows:

the embodiment of the application provides a burring cutter, the burring cutter includes: the cutter comprises a cutter bar, a blade, a spring piece, a pin and a positioning pin;

a first connecting part and a second connecting part extend from one end of the cutter bar, a containing groove is formed between the first connecting part and the second connecting part, and the pin is contained in the containing groove;

the side surface of the pin is provided with an opening, the blade comprises a connecting ring and a cutting part, the blade is sleeved on the side surface of the pin through the connecting ring, and the opening is positioned in the connecting ring when the blade is sleeved on the side surface of the pin;

one end of the spring piece is provided with a positioning hole, the side surface of the cutter bar is provided with a positioning pin hole, the positioning pin hole is aligned with the positioning hole, the positioning pin penetrates through the positioning hole and the positioning pin hole, one end of the spring piece is fixed with the cutter bar through the positioning pin, the other end of the spring piece is embedded into the connecting ring and is simultaneously embedded into the opening of the pin, and the spring piece is used for adjusting the cutting capacity of the blade.

Optionally, a side surface of the cutting portion is provided with a forward cutting edge and a reverse cutting edge, the forward cutting edge is used for removing burrs of the forward orifice, and the reverse cutting edge is used for removing burrs of the reverse orifice;

the thickness of first connecting portion is greater than the thickness of second connecting portion, the blade cover is located during the side of pin, the forward cutting edge with reverse cutting edge is close to in first connecting portion, just the forward cutting edge with the cutting edge plane at reverse cutting edge place with the coincidence of the central line of cutter arbor.

Optionally, the cutting top of the cutting portion is designed in a circular arc manner.

Optionally, the forward cutting edge is located on the rake face, and the reverse cutting edge is located on the flank face;

the clearance angle of the front cutter face and the clearance angle of the rear cutter face are larger than the tangent angle of the orifice curve.

Optionally, the deburring tool further comprises a pressure regulating screw, and the tool bar is provided with a corresponding screw hole;

the pressure regulating screw is installed in the screw hole, and is right the spring leaf produces pressure, and the spring leaf under the pressure effect is right the blade produces elastic force, wherein, the degree of screwing of pressure regulating screw with elastic force is positive correlation.

Optionally, the spring plate comprises a front end portion and a rear end portion, and the thickness of the front end portion is smaller than that of the rear end portion;

the front end portion is embedded in the connecting ring of the blade and in the opening of the pin.

Optionally, the first connecting portion is provided with a first opening, and the second connecting portion is provided with a second opening;

one end of the pin is riveted with the first opening, and the other end of the pin is riveted with the second opening.

In summary, the embodiment of the application provides the deburring tool, each component of the deburring tool can be detached and replaced for use, the service life of the whole tool is prolonged, and the production cost is reduced; for the main assembly blade, the connected pin can rotate and move when being subjected to external force, so that the deburring cutter can easily enter and exit the hole with smaller caliber; in addition, the deburring cutter can remove burrs in the positive and negative orifices through one-time operation, numerical control operation in the related technology is further simplified, and deburring operation efficiency and convenience are improved.

Drawings

FIG. 1 illustrates a schematic structural diagram of a deburring tool provided by an embodiment of the application;

fig. 2 is a schematic structural diagram of a tool bar provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a pin according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a blade provided by an embodiment of the present application;

FIG. 5 is a schematic diagram illustrating a spring plate according to an embodiment of the present disclosure;

fig. 6 is a schematic view showing a cutting process provided in the related art;

FIG. 7 is a schematic diagram illustrating a cutting process provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of another blade provided by an embodiment of the present application;

FIG. 9 illustrates a schematic view of a blade mounting location provided by an embodiment of the present application;

FIG. 10 illustrates another schematic diagram of a cutting process provided by an embodiment of the present application;

FIG. 11 is a schematic diagram illustrating a cutting effect provided by an embodiment of the present application;

fig. 12 is a schematic structural diagram illustrating a pressure adjusting screw according to an embodiment of the present disclosure;

FIG. 13 is a schematic view of a blade swing range provided by an embodiment of the present application;

fig. 14 shows a schematic structural diagram of another tool bar provided in the embodiment of the present application.

Wherein the reference numerals in the drawings are explained as follows:

100: a deburring cutter; 110: a cutter bar; 111: a first connection portion;

112: a second connecting portion; 113: a containing groove; 114: a positioning pin hole;

115: a first opening; 116: a second opening; 120: a pin;

121: an opening; 130: a blade; 131: a connecting portion;

132: a cutting portion; 133: a forward cutting edge; 134: a reverse cutting edge;

135: cutting the top; 140: a spring plate; 141: positioning holes;

150: positioning pins; 160: a pressure regulating screw; 161: and (4) screw holes.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Please refer to fig. 1 to 7, which illustrate a schematic structural diagram of a deburring tool provided in an exemplary embodiment of the present application.

In the present application, a deburring tool 100 is provided that includes a tool bar 110, a pin 120, a blade 130, a spring plate 140, and a dowel pin 150.

As for the tool bar 110, as shown in fig. 2, one end of the tool bar 110 extends with a first connecting portion 111 and a second connecting portion 112; optionally, in the embodiment of the present application, the main body of the tool holder 110 is illustrated as a cylinder, and the specific main body of the tool holder 110 is not limited in the embodiment of the present application, wherein the tail region of the tool holder 110 is a thin cylindrical body with a small radius, which is used for convenient fixing and clamping during numerical control, and the remaining regions of the tool holder 110 are the first connecting portion 111 and the second connecting portion 112.

Further, a receiving groove 113 is formed between the first connecting portion 111 and the second connecting portion 112, and the pin 120 is received in the receiving groove 113.

As shown in fig. 1 and 3, one end of the pin 120 is riveted to the first connection portion 111, the other end of the pin 120 is riveted to the second connection portion 112, and the pin 120 is rotatable in a riveted state.

Further, as shown in fig. 3, the pin 120 is provided with an opening 121 at a side thereof for mounting the blade 130.

As for the blade 130, as shown in fig. 3 and 4, the blade 130 includes a connection ring 131 and a cutting portion 132 (in fig. 4, a left area of a dotted line a is the connection ring 131, and a right area of the dotted line a is the cutting portion 132), the blade 130 is sleeved on the side surface of the pin 120 through the connection ring 131, and the opening 121 is located in the connection ring 131 when the blade 130 is sleeved on the side surface of the pin 120.

It should be noted that since the pin 120 is rotatable in the riveted state, the blade 130 connected to the pin 120 is also rotatable when fitted in the deburring tool 100.

As for the spring plate 140, as shown in fig. 1, 2, 3 and 5, one end of the spring plate 140 is provided with a positioning hole 141, the side surface of the cutter bar 110 is provided with a positioning pin hole 114, the positioning pin hole 114 is aligned with the positioning hole 141, a positioning pin 150 passes through the positioning hole 141 and the positioning pin hole 114, one end of the spring plate 140 is fixed with the cutter bar 110 by the positioning pin 150, the other end of the spring plate 140 is embedded into the connecting ring 131 and is simultaneously embedded into the opening 121 of the pin 120, wherein the spring plate 140 is used for adjusting the cutting ability of the blade 130.

It should be noted that each component of the deburring tool 100 is a detachable component, for example, for the blade 130 with a large consumption degree, the blade 130 is only required to be detached and replaced with a new blade 130 after being dulled, and the numerical control device does not need to use a new deburring tool 100, thereby greatly reducing the production cost of consumers.

In one possible embodiment, the assembly process of the deburring tool 100 is explained: fixing the cutter bar 110; aligning the positioning hole 141 of the spring plate 140 with the positioning pin hole 114 on the cutter bar 110; then the positioning pin 150 is assembled to fix the spring plate 140 and the cutter bar 110; inserting the pin 120 into a riveting hole at the front end of the cutter bar 120, inserting half of the pin 120, sleeving the blade 130 on the position of the opening 121 of the pin 120, and continuously assembling the pin 120 into the cutter bar 110; the spring plate 140 is then inserted into the opening 121 of the pin 120 to complete the complete tool assembly.

Further, a deburring tool 100 provided by the embodiment of the present application is compared with a deburring tool in the related art.

As shown in fig. 6, which shows a schematic view of a deburring tool and a deburring process in the related art. The tool 600 is a tool with a larger caliber, the tool 610 is a tool with a smaller caliber, and the region 620 is a burr region. The caliber of the cutter 600 is large, burrs at the orifice of the area 620 can be removed at one time, but a circle of burrs inside the orifice of the area 620 cannot be removed, and the cutter 600 cannot extend into the orifice; the smaller diameter of tool 610 may extend into the interior of the orifice of region 620, but removing a ring of burrs inside the orifice of region 620 is time consuming and requires a higher specification on the numerical control machine tool by machine control to remove the burrs one ring around the orifice, and further, while tool 610 may extend into the interior of the orifice of region 620, it is not possible to remove the burrs inside region 620.

In the embodiment of the present application, the deburring tool 100 provided herein not only can remove burrs on the inner and outer surfaces of the orifice in the related art, but also can remove burrs inside the orifice, and has low requirements on the numerical control machine tool, good realizability, and low production cost. As shown in fig. 7, a schematic diagram of the deburring tool 100 and the deburring process provided by the embodiment of the application is shown.

In process 1, the deburring tool 100 is rotated forward to prepare for entry into the aperture (clockwise as shown for the example of forward direction), and the burr of the forward aperture region 701 is removed clean.

In process 2, the deburring tool 100 enters the bore interior after completing the deburring of the forward bore region 701 in process 1, illustratively because the pin 120 is rotatable and thus also rotatable after the blade 130 has been subjected to the interaction forces of the bore surfaces, so that the maximum outer diameter of the deburring tool 100 becomes smaller and can naturally enter the bore interior.

In process 3, the deburring tool 100 is gradually moved out from the inside of the aperture to the reverse aperture region 702, and similar to process 1, the deburring tool 100 rotates and removes the burrs of the reverse aperture region 702 clean.

In process 4, the deburring tool 100 begins to return from the reverse orifice region 702 after completing the deburring work of the reverse orifice region 702. It should be noted that the timing of starting the return of the deburring tool 100 may be controlled manually or intelligently. For example, the operator controls the numerically controlled machine tool to control the activity of the deburring tool 100 according to the deburring effect, and for example, the technician presets a control mechanism for the operation time (for example, the operation time setting of each process according to the conditions of the diameter of the hole, the depth of the hole and the like) on the numerically controlled machine tool.

In process 5, the deburring tool 100 is completely withdrawn from the bore and the current operation is ended.

On the basis of fig. 1 to 7, please refer to fig. 8 to 14, which show schematic structural views of a deburring tool provided in another exemplary embodiment of the present application, so as to further explain the structure of the deburring tool 100 in this embodiment.

As shown in fig. 8, optionally, the side of the cutting part 132 is provided with a forward cutting edge 133 and a reverse cutting edge 134, the forward cutting edge 133 is used for deburring of the forward orifice, and the reverse cutting edge 134 is used for deburring of the reverse orifice.

Returning to fig. 7, in process 1, the deburring tool 100 removes the burr of the forward orifice region 701 by the forward cutting edge 133; in process 3, the deburring tool 100 removes the burr of the reverse orifice region 702 by the reverse cutting edge 134.

In addition, in the present embodiment, the center line of the tool holder 110 and the workpiece hole is aligned for the best cutting effect. Thus, as shown in fig. 9, in order to ensure that each cutting edge of the insert 130 is located on the center line b of the tool holder 110, since the insert 130 itself has a certain thickness, the thickness D1 of the first connecting portion 111 is required to be greater than the thickness D2 of the second connecting portion 112; further, when the insert 130 is sleeved on the side surface of the pin 120, the forward cutting edge 133 and the reverse cutting edge 134 are close to the first connecting portion 111, and the cutting edge plane S1 where the forward cutting edge 133 and the reverse cutting edge 134 are located coincides with the center line of the tool holder 110.

Alternatively, as shown in fig. 8, the cutting tip 135 of the cutting portion 132 is of a circular arc design. The arc surface of the cutting top 135 is the contact surface in the hole between the blade 130 and the workpiece hole, the unique arc design ensures that the blade 130 is smoothly contacted with the hole in the hole, the inner wall of the hole cannot be scratched by the inner surface of the hole, the burr removing requirement of a customer is met, and the hole quality is also ensured.

As shown in fig. 8, in the present embodiment, the forward cutting edge 133 is located on the rake surface S2, and the reverse cutting edge 134 is located on the flank surface S3 (the flank surface S3 is not shown in fig. 8 for reasons of obstruction). Note that the clearance angle of the rake face S2 and the flank face S3 is larger than the tangent angle of the orifice curve for the following reasons.

In the related art, the burr removing work of the inclined hole burrs and the cross hole burrs cannot be realized under the condition of one-time operation, but a plurality of deburring knives are needed to act simultaneously and turn over the workpiece in time, so that the mode consumes large labor force of workers and causes low production efficiency. Particularly, in the case of the circular-arc burr at the inner cross hole, the related art deburring blade cannot remove the burr even in one operation.

In the embodiment of the present application, the deburring tool 100 provided can pass a hole at a time, remove burrs at a front orifice and a back orifice and easily remove burrs at an internal cross hole, and particularly solve the problem that the aperture ratio of a large hole and a small hole is not less than 2 of the burrs of the cross hole, and in the related art, the problem that the curvature of the intersection of the holes is too large and the burrs of the whole circle cannot be removed exists in the burrs of the cross hole with the aperture ratio of the large hole and the aperture ratio of the small hole being not.

As shown in fig. 10, the workpiece 1001 to be deburred has a small aperture shown by D and a large aperture shown by 2D. In the operation process, the deburring cutter 100 rotates forwards to enter the hole, the deburring cutter 100 removes burrs of a forward hole opening and an internal cross hole through the cutting edge at one end during hole entering, and the deburring cutter 100 removes burrs of a reverse hole opening and the internal cross hole through the cutting edge at the other end during hole leaving.

Further, in order to ensure that the cross hole burrs with the large and small hole diameter ratios not less than 2 can be removed completely, the deburring tool 100 provided in the embodiment of the present application adopts a large clearance angle design, as shown in fig. 10, the clearance angles of the rake face S2 and the flank face S3 are counted as 20 degrees, and if the clearance angle is too small, the cutting edge cannot hit the burrs, so that the burr removal work cannot be performed.

Fig. 11 (a) is a drawing of the intersection hole having a large aperture ratio of 2, and fig. 11 (b) shows angle data indicating the size of the angle formed by the burr and the insert 130 at

positions

1, 2, 3, 4 and 5 during cutting. It can be seen that the relief angle of the blade 130 must be greater than the angle tangent to the orifice curve, only so that the blade 130 moves with its respective cutting edge cutting the workpiece. If the clearance angle of the blade 130 is smaller than the tangential angle of the orifice curve, the blade 130 is not the cutting edge but the flank surface of the blade 130 rubs against the workpiece at the cutting position, and thus the deburring effect cannot be achieved.

Optionally, as shown in fig. 12, the deburring tool 100 further includes a pressure adjusting screw 160, and the tool bar 110 is provided with a corresponding screw hole 161, wherein (a) and (b) of fig. 12 are perspective views of the internal structure of the deburring tool 100 at different angles, and (c) of fig. 12 is a non-perspective assembly view. The pressure adjusting screw 160 is installed in the screw hole 161 and generates pressure on the spring plate 140, and the spring plate 140 under the pressure generates elastic acting force on the blade 130, wherein the screwing degree of the pressure adjusting screw 160 is in positive correlation with the elastic acting force.

Optionally, the operator can tighten or loosen the pressure adjusting screw 160 according to the size of the burr or the requirement for the size of the chamfer.

In one possible embodiment, the assembly process of the deburring tool 100 can be further explained as follows: fixing the cutter bar 110; aligning the positioning hole 141 of the spring plate 140 with the positioning pin hole 114 on the cutter bar 110; then the positioning pin 150 is assembled to fix the spring plate 140 and the cutter bar 110; inserting the pin 120 into a riveting hole at the front end of the cutter bar 120, inserting half of the pin 120, sleeving the blade 130 on the position of the opening 121 of the pin 120, and continuously assembling the pin 120 into the cutter bar 110; then, the spring plate 140 is inserted into the opening 121 of the pin 120, finally, the pressure adjusting screw 160 is placed into the screw hole 161, and the pressure adjusting screw 160 is tightened to press the spring plate 140, thereby completing the assembly of the whole cutter.

In the present embodiment, the spring plate 140 includes a front end portion and a rear end portion, the thickness of the front end portion being smaller than the thickness of the rear end portion; further, the front end portion is inserted into the connection ring 131 of the blade 130 and inserted into the opening 121 of the pin 120. The thickness of the front end is smaller, so that the front end of the spring plate 140 is thinner, and the deformation degree is larger when the spring plate is stressed, thereby facilitating the blade 130 to swing within a certain angle range. In one example, as shown in fig. 13, the blade 130 has a swing range of 90 degrees.

Further, as shown in fig. 14, the first connection portion 111 is provided with a first opening 115, and the second connection portion 112 is provided with a second opening 116; further, one end of the pin 120 is riveted with the first opening 115, the other end of the pin 120 is riveted with the second opening 116, and the pin 120 is rotatable in the riveted state.

In the embodiment of the application, the cutting part of the blade is provided with different cutting edges so as to remove the forward orifice burrs and the reverse orifice burrs in one-time operation, and improve the operation efficiency.

In the embodiment of the application, the cutting edge planes where the forward cutting edge and the reverse cutting edge are located are overlapped with the center line of the cutter bar so as to ensure the best cutting effect.

In the embodiment of the application, the cutting top of the cutting part is designed in an arc shape, so that the blade is smoothly carried out when the blade is contacted with the inside of the hole, the inner wall of the hole is not scratched by the inner surface of the hole, the burr removing requirement of a customer is met, and the quality of the hole is also ensured.

In this application embodiment, the relief angle of rake face and back knife face is greater than the curvilinear tangent line angle in drill way, can once the via hole, clear away positive and negative drill way burr and also can easily get rid of to the crossing hole burr that big or small aperture diameter ratio is not less than 2 has the crossing hole burr of hole crossing department curvature too big and can't get rid of the problem of whole circle burr in solving the correlation technique.

In this application embodiment, burring cutter still includes the pressure regulating screw, and operating personnel can adjust tightly or transfer the pine pressure regulating screw according to the burr size or to the demand of chamfer size, makes things convenient for the nimble implementation of burring operation.

In the embodiment of the application, the thickness of the front end part of the spring piece is smaller than that of the rear end part, so that the front end of the spring piece is thinner, the deformation degree is larger when the spring piece is stressed, the blade can swing within a certain angle range more conveniently, and the flexibility of the deburring cutter during operation is improved.

The above description is only an alternative embodiment of the present application and should not be construed as limiting the present application, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A deburring tool, comprising: the cutter comprises a cutter bar, a blade, a spring piece, a pin and a positioning pin;

2. A deburring tool as claimed in claim 1 wherein the side of said cutting portion is provided with a forward cutting edge for deburring of a forward orifice and a reverse cutting edge for deburring of a reverse orifice;

3. A deburring tool as claimed in claim 1 wherein the cutting tip of said cutting portion is of circular arc design.

4. A deburring tool as claimed in claim 2 wherein said forward cutting edge is on the rake face and said reverse cutting edge is on the relief face;

5. The deburring tool of any one of claims 1 to 4, further comprising a pressure adjusting screw, wherein the tool holder is provided with a corresponding screw hole;

6. The deburring tool of claim 5, wherein the spring plate includes a front end portion and a rear end portion, the front end portion having a thickness less than a thickness of the rear end portion;

7. A deburring tool as claimed in any one of claims 1 to 4 wherein said first connecting portion is provided with a first aperture and said second connecting portion is provided with a second aperture;