Combined punch for bearing forging trepanning and bottom cutting

Abstract

The utility model provides a bearing forging trepanning and bottom cutting combined type punch which comprises a connecting base detachably installed on a base and further comprises a punch body and a connecting part. The connecting part is detachably mounted on the joining seat, and a first threaded hole is formed in the connecting part; the first bolt is arranged in the axis direction of the punch, and the first bolt penetrates through the punch, extends into the first threaded hole and is in threaded connection with the punch, so that the punch and the connecting part are fixed; one of the limiting groove and the limiting rib is arranged on the side wall of the connecting part, the other one of the limiting groove and the limiting rib is arranged on the punch, and when the limiting rib is inserted into the limiting groove, the limiting rib is used for limiting the punch to rotate around the axis of the connecting part; and the limiting groove and the limiting rib are matched with each other to limit the punch to rotate along the axis of the connecting part, so that the stability of the punch is improved, the precision in the bearing forging process is improved, and waste materials are reduced.

Description

Technical Field

[0001] This application relates to the field of bearing forging equipment, and in particular to a combined punch for cutting the bottom of bearing forging sleeves. Background Technology

[0002] Bearings are important components of various mechanical equipment, and the forging and processing of bearing rings is particularly important.

[0003] In the existing bearing ring forging die technology, after frequent use, the punch part of the forging die will deform or wear. When the deformation reaches a certain point, the punch cannot be used and needs to be replaced with a new punch.

[0004] In the existing technology, the bottom cutting punch uses an integral punch, and the material is a mold material specially used for bearing forging, which has a high material cost.

[0005] To address the issue of material costs, the utility model patent with authorization announcement number CN214290641U discloses a punch, a cutting edge, and a hexagonal bolt. The punch and the cutting edge are fixed together using a hexagonal bolt. When the cutting edge wears out, only the cutting edge needs to be replaced. This method is simple to operate and saves on material costs.

[0006] Since the punch needs to impact and collide with the material, when the cutting edge is fixed to the punch with bolts, the vibration generated by the impact can easily cause the hex bolts to loosen, which can cause the cutting edge to wobble on the punch and affect the accuracy of bearing forging. Since the hex bolts are threaded to the punch, the threads inside the hex bolts and bolt holes are prone to wear, and in severe cases, the punch needs to be replaced. Utility Model Content

[0007] This application provides a combined punch for cutting the bottom of bearing forging sleeves, which solves the technical problem that the cutting edge wobbles due to the wear of the hexagonal bolt caused by impact.

[0008] A combined punch for cutting the bottom of bearing forging sleeves is provided, including a connecting seat that can be detachably mounted on a base, and also including a punch and a connecting part;

[0009] The connecting part is detachably mounted on the connector, and the connecting part is provided with a first threaded hole;

[0010] The first bolt is set along the axis of the punch, passes through the punch and extends into the first threaded hole to form a threaded connection, which is used to fix the punch and the connecting part.

[0011] It also includes a limiting groove and a limiting rib. One of the limiting groove and the limiting rib is provided on the side wall of the connecting part, and the other is provided on the punch. When the limiting rib is inserted into the limiting groove, it is used to limit the punch from rotating around the axis of the connecting part.

[0012] In one embodiment, the punch has a first insertion interface on both end walls, and the connector has a second insertion interface on its end wall. When the connector is installed, the first insertion connector of the connector is inserted into the first insertion interface, and the second insertion connector of the connector is inserted into the second insertion interface.

[0013] In one embodiment, the connecting seat and the connecting part are fixedly connected by a second bolt.

[0014] In one embodiment, a second threaded hole is provided on the connecting part, and the connecting seat is provided with a countersunk hole and a second through hole. One end of the second through hole is connected to the countersunk hole, and the other end of the second through hole is connected to the second insertion interface. The second bolt passes through the second through hole and extends into the second threaded hole, and the second bolt is threadedly connected to the second threaded hole.

[0015] In one embodiment, a plurality of limiting ribs are provided and fixed on the peripheral wall of the connecting part. The limiting ribs are arranged along the axial direction of the connecting part. The limiting groove includes a first limiting groove and a second limiting groove, which are respectively provided on the punch and the connecting seat.

[0016] In one embodiment, the limiting rib includes a first limiting rib and a second limiting rib. The first limiting groove is disposed on the side wall of the first insertion interface and is disposed along the axial direction of the punch. The second limiting groove is disposed on the peripheral wall of the second insertion interface and is disposed along the axial direction of the connecting seat. When the connecting part is installed, the first limiting rib is inserted into the first limiting groove and the second limiting rib is inserted into the second limiting groove.

[0017] In one embodiment, the peripheral wall of the connecting part is provided with an impact platform arranged radially along the connecting part, the connecting seat is provided with a pushing surface, and the end of the punch is provided with an abutting end face. When the connecting part is installed, the two end walls of the impact platform abut against the pushing surface and the abutting end face respectively.

[0018] In one embodiment, the punch has a first through hole arranged along the axial direction, the first bolt passes through the first through hole and is threadedly connected to the first threaded hole of the connecting part, and the end of the first bolt is hidden in the first insertion interface.

[0019] In one embodiment, the base is provided with a locking post and a locking nut, the locking nut having a threaded hole, the end wall of the connecting seat having a limiting edge, the connecting seat passing through the threaded hole and abutting against the bottom wall of the threaded hole, and the locking nut being threadedly connected to the locking post to fix the connecting seat on the base.

[0020] In one embodiment, a first cutting edge and a second cutting edge are respectively provided at the edges of the two end walls of the punch.

[0021] Compared with the prior art, the bearing forging sleeve cutting bottom combination punch of this application has the following advantages:

[0022] The punch is fixed to the connector using the first bolt, enabling quick installation. Even if the first screw hole or the first bolt is damaged due to impact after prolonged use, the connection or the first bolt can be replaced, reducing production costs. When the punch becomes loose due to impact, the cooperation of the limiting groove and the limiting rib restricts the punch from rotating along the axis of the connection, improving the stability of the punch, increasing the precision of the bearing forging process, and reducing waste.

[0023] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0024] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:

[0025] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0026] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0027] Figure 2 This is a first unfolded schematic diagram of the present application;

[0028] Figure 3 A cross-sectional view of this application is shown;

[0029] Figure 4 This illustrates the second unfolded schematic diagram of this application;

[0030] Figure 5 This application shows a third unfolded schematic diagram;

[0031] Figure 6 A schematic diagram of the connector of this application is shown;

[0032] Figure 7 A schematic diagram of the connection portion of this application is shown;

[0033] Figure 8 A schematic diagram of the punch of this application is shown.

[0034] Explanation of the labels in the diagram:

[0035] 100. Base; 101. Locking pin;

[0036] 1. Connecting seat; 11. Second insertion interface; 12. Limiting edge; 13. Countersunk hole; 131. Second through hole; 14. Push surface;

[0037] 2. Punch; 21. Limiting groove; 211. First limiting groove; 212. Second limiting groove; 22. First insertion interface; 23. First through hole; 241. First cutting edge; 242. Second cutting edge; 25. Abutting end face;

[0038] 3. Connecting part; 31. First threaded hole; 32. Limiting rib; 321. First limiting rib; 322. Second limiting rib; 331. First connector; 332. Second connector; 34. Impact table; 341. First contact surface; 342. Second contact surface; 35. Second threaded hole;

[0039] 4. First bolt;

[0040] 5. Lock nut; 51. Threaded hole; 6. Second bolt. Detailed Implementation

[0041] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] like Figure 1 and Figure 2 As shown, the device includes a base 100 for fixing a combined punch. The combined punch includes a connecting seat 1, a punch 2, and a connecting part 3. The punch 2 is detachably mounted on the connecting seat 1 via the connecting part 3. The connecting seat 1 and the base 100 are detachably installed to facilitate the replacement of the connecting part 3 and the punch 2.

[0043] Specifically, such as Figure 3 and Figure 5As shown, a limiting edge 12 is provided at one end wall of the connecting seat 1. In order to achieve a detachable connection between the connecting seat 1 and the base 100, a locking pin 101 and a locking nut 5 are also included. The locking nut 5 is provided with a screw hole 51. The end of the connecting seat 1 away from the limiting edge 12 can extend downward through the screw hole 51, and then the limiting edge 12 is left in the screw hole 51. The locking pin 101 is fixedly installed on the base 100, and then the locking nut 5 is threadedly connected to the locking pin 101, so that the top wall of the limiting edge 12 abuts against the bottom wall of the locking pin 101, thereby restricting the movement of the connecting seat 1 along the axial direction of the locking nut 5, thereby enabling the installation of the connecting seat 1.

[0044] Specifically, the punch 2 is installed at the end of the connecting seat 1 away from the limiting edge 12 via the connecting part 3.

[0045] The connecting part 3 and the connecting seat 1 can be detached and installed.

[0046] In order to fix the connecting part 3 and the connecting seat 1, in this embodiment, as follows: Figure 3 , Figure 6 and Figure 7 As shown, the connecting seat 1 is provided with a second through hole 131 arranged along the axial direction of the connecting seat 1, and the connecting part 3 is provided with a second threaded hole 35 arranged along the axial direction of the connecting part 3. It also includes a second bolt 6, which passes through the second through hole 131 and extends into the second threaded hole 35, wherein the second bolt 6 is threadedly connected to the second threaded hole 35.

[0047] Specifically, to prevent the locking pin 101 from contacting the second bolt 6, in this embodiment, as follows: Figure 6 As shown, the connecting seat 1 is also provided with a countersunk hole 13 that communicates with the second through hole 131. The end part of the second bolt 6 is hidden inside the countersunk hole 13, thereby solving the problem of the locking post 101 contacting the second bolt 6.

[0048] In order to achieve the installation of the punch 2 and the connecting part 3, in this embodiment, as follows: Figure 3 , Figure 4 and Figure 8 As shown, the punch 2 is provided with a first through hole 23, wherein the first through hole 23 is arranged along the axial direction of the punch 2, and also includes a first bolt 4, wherein the first bolt 4 passes through the first through hole 23 and is threadedly connected to the connecting part 3, thereby fixing the punch 2 on the connecting part 3.

[0049] Specifically, such as Figure 3 and Figure 7 As shown, the connecting part 3 is provided with a first threaded hole 31 arranged along the axial direction, and the thread on the first bolt 4 is threadedly connected to the first threaded hole 31, thereby fixing the punch 2.

[0050] During operation, the punch 2 vibrates during the stamping process, which can easily damage the threads on the first bolt 4 and the threads on the first threaded hole 31. In this case, the first bolt 4 and the connecting part 3 can be directly replaced. Compared with the problem in the prior art where the threaded hole cannot be used again due to damage, and the entire base 100 needs to be replaced or the threaded hole needs to be remade, this solution reduces the cost of consumables used in the production process.

[0051] During the stamping process of punch 2 on the material, in order to avoid the first bolt 4 affecting the stamping operation, such as Figure 8 As shown, the punch 2 has a first insertion interface 22 at both ends of its end wall, and the end of the first bolt 4 can be hidden inside one of the first insertion interfaces 22.

[0052] After prolonged use, the cutting edge of punch 2 is prone to wear. Existing technology involves replacing the entire punch 2, increasing consumable costs. Therefore, in this embodiment, if... Figure 8 As shown, the punch 2 has a first cutting edge 241 and a second cutting edge 242 at the edges of its two end walls. When one end of the cutting edge of the punch 2 is worn, the two ends of the punch 2 can be replaced. The two cutting edges on the punch 2 can extend the service life of the punch.

[0053] In this embodiment, as Figure 3 As shown, the punch 2 and the connecting seat 1 are generally cylindrical, wherein the diameter of the punch 2 is larger than the diameter of the connecting seat 1. When the cutting edges at both ends of the punch 2 are worn, the punch 2 can be removed, annealed, and the working surface at the cutting edge of the punch 2 can be re-machined and then quenched. This allows the punch 2 to be used for stamping products of other diameters, achieving the purpose of reusing the punch 2 and reducing the cost of the mold.

[0054] Normally, the material of punch 2 is different from that of base 100. Punch 2 is made of impact-resistant and wear-resistant material, while base 100 is made of conventional material.

[0055] After the punch 2 applies an impact force to the connecting seat 1, the connecting seat 1 is prone to deformation, which can easily cause damage to the threads inside the first threaded hole 31. At this time, the punch 2 is prone to shaking, which can affect the accuracy of material stamping.

[0056] Therefore, in this embodiment, a limiting groove 21 and a limiting rib 32 are also included. One of the limiting groove 21 and the limiting rib 32 is provided on the connecting part 3, and the other is provided on the punch 2 and / or the connecting seat 1, thereby restricting the circumferential rotation of the punch 2.

[0057] Specifically, such as Figure 6 and Figure 7As shown, the end of the connecting seat 1 away from the limiting edge 12 is provided with a second insertion interface 11. The connecting part 3 includes a first insertion connector 331 and a second insertion connector 332. The first insertion connector 331 and the second insertion connector 332 are distributed along the axial direction of the connecting part 3. The second insertion connector 332 is inserted into the second insertion interface 11 to fix the connecting part 3 and the connecting seat 1. The first insertion connector 331 is located on the outside of the connecting seat 1 to connect with the punch 2.

[0058] The inner wall of the second insertion interface 11 is provided with a second limiting groove 212 arranged along the axial direction of the connecting seat 1, and the peripheral wall of the second insertion connector 332 is provided with a second limiting rib 322. The second limiting rib 322 is inserted into the second limiting groove 212, and the inner wall of the second limiting groove 212 abuts against the side wall of the second limiting rib 322, thereby restricting the connecting part 3 from rotating around the axis of the connecting seat 1.

[0059] like Figure 7 and Figure 8 As shown, the peripheral wall of the first insertion interface 22 is provided with a first limiting groove 211 arranged along the axial direction of the punch 2, and the peripheral wall of the first insertion connector 331 of the connecting part 3 is provided with a first limiting rib 321. The first insertion connector 331 is inserted into the first insertion interface 22, and the first limiting rib 321 is inserted into the first limiting groove 211. The side wall of the first limiting rib 321 abuts against the side wall of the first limiting groove 211, thereby restricting the punch 2 from rotating around the axis of the connecting part 3 and improving the stability of the punch 2 installation.

[0060] Because the punch 2 and the connector 1 are made of different materials, when the punch 2 applies pressure to the connector 1, the connector 1 is prone to deformation, which will cause the second insertion interface 11 to deform, affecting the removal of the connecting part 3 from the connector 1. Therefore, in this embodiment, as follows... Figure 5 and Figure 7 As shown, the peripheral wall of the connecting part 3 is fixedly provided with an impact platform 34 arranged radially along the connecting part 3, such as... Figure 6 As shown, the end of the connecting seat 1 away from the limiting edge 12 is provided with a pushing surface 14, and the end wall of the punch 2 is provided with an abutting end surface 25. After the connecting part 3 and the punch 2 are installed, the first contact surface 341 of the impact table 34 abuts against the pushing surface 14, and the second contact surface 342 of the impact table 34 abuts against the abutting end surface 25.

[0061] The connecting part 3 is made of the same material as the punch 2. When the pushing surface 14 is deformed, it will be restricted by the first contact surface 341 and the peripheral wall of the connecting part 3 to prevent the diameter of the second insertion interface 11 from becoming smaller after the connecting seat 1 is deformed, thereby solving the problem that the connecting part 3 is not easy to disassemble.

[0062] like Figure 3As shown, since the connecting part 3 and the punch 2 are made of the same material, and the material of the connecting part 3 and the punch 2 is harder than that of the connecting seat 1, even if the connecting seat 1 is deformed due to vibration, the main damaged parts are the second bolt 6 and the second threaded hole 35. At this time, the second bolt 6 can be replaced or the second threaded hole 35 can be re-machined. In severe cases, only the connecting part 3 needs to be replaced, which can reduce production costs.

[0063] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0065] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A combined punch for cutting the bottom of bearing forging sleeves, comprising a connecting seat (1) detachably mounted on a base (100), characterized in that, It also includes a punch (2) and a connecting part (3); The connecting part (3) is detachably installed on the connecting seat (1), and the connecting part (3) is provided with a first threaded hole (31); The first bolt (4) is set along the axis of the punch (2). The first bolt (4) passes through the punch (2) and extends into the first threaded hole (31) to form a threaded connection, so as to fix the punch (2) and the connecting part (3). It also includes a limiting groove (21) and a limiting rib (32). One of the limiting groove (21) and the limiting rib (32) is provided on the side wall of the connecting part (3), and the other is provided on the punch (2). When the limiting rib (32) is inserted into the limiting groove (21), it is used to restrict the punch (2) from rotating around the axis of the connecting part (3).

2. The bearing forging sleeve cutting bottom combination punch according to claim 1, characterized in that, The punch (2) has a first insertion interface (22) on both ends of its end wall, and the connector (1) has a second insertion interface (11) on its end wall. When the connector (3) is installed, the first insertion connector (331) of the connector (3) is inserted into the first insertion interface (22), and the second insertion connector (332) of the connector (3) is inserted into the second insertion interface (11).

3. A combined punch for cutting the bottom of bearing forging sleeves according to claim 2, characterized in that, The connecting seat (1) and the connecting part (3) are fixedly connected by the second bolt (6).

4. A combined punch for cutting the bottom of bearing forging sleeves according to claim 3, characterized in that, The second threaded hole (35) is provided on the connecting part (3). The connecting seat (1) is provided with a countersunk hole (13) and also includes a second through hole (131). One end of the second through hole (131) is connected to the countersunk hole (13), and the other end of the second through hole (131) is connected to the second insertion interface (11). The second bolt (6) passes through the second through hole (131) and extends into the second threaded hole (35). The second bolt (6) is threadedly connected to the second threaded hole (35).

5. A combined punch for cutting the bottom of bearing forging sleeves according to claim 2, characterized in that, A plurality of limiting ribs (32) are provided and fixed on the peripheral wall of the connecting part (3). The limiting ribs (32) are arranged along the axial direction of the connecting part (3). The limiting groove (21) includes a first limiting groove (211) and a second limiting groove (212). The first limiting groove (211) and the second limiting groove (212) are respectively provided on the punch (2) and the connecting seat (1).

6. A combined punch for cutting the bottom of bearing forging sleeves according to claim 5, characterized in that, The limiting rib (32) includes a first limiting rib (321) and a second limiting rib (322). The first limiting groove (211) is provided on the side wall of the first insertion interface (22) and is arranged along the axial direction of the punch (2). The second limiting groove (212) is provided on the peripheral wall of the second insertion interface (11) and is arranged along the axial direction of the connecting seat (1). When the connecting part (3) is installed, the first limiting rib (321) is inserted into the first limiting groove (211) and the second limiting rib (322) is inserted into the second limiting groove (212).

7. A combined punch for cutting the bottom of bearing forging sleeves according to claim 1, characterized in that, The peripheral wall of the connecting part (3) is provided with an impact platform (34) arranged radially along the connecting part (3), the connecting seat (1) is provided with a push surface (14), and the end of the punch (2) is provided with an abutment end surface (25). When the connecting part (3) is installed, the two end walls of the impact platform (34) abut against the push surface (14) and the abutment end surface (25) respectively.

8. A combined punch for cutting the bottom of bearing forging sleeves according to claim 2, characterized in that, The punch (2) has a first through hole (23) arranged along the axial direction. The first bolt (4) passes through the first through hole (23) and is threadedly connected to the first threaded hole (31) of the connecting part (3). The end of the first bolt (4) is hidden in the first insertion interface (22).

9. A combined punch for cutting the bottom of bearing forging sleeves according to claim 1, characterized in that, The base (100) is provided with a locking post (101) and also includes a locking nut (5). The locking nut (5) is provided with a screw hole (51). The end wall of the connecting seat (1) is provided with a limiting edge (12). The connecting seat (1) passes through the screw hole (51) and abuts against the bottom wall of the screw hole (51). The locking nut (5) is threadedly connected to the locking post (101) to fix the connecting seat (1) on the base (100).

10. A combined punch for cutting the bottom of bearing forging sleeves according to claim 1, characterized in that, The punch (2) has a first cutting edge (241) and a second cutting edge (242) at the edges of its two end walls respectively.

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