A riveting die for lamination assembly

Abstract

The utility model relates to a riveting die for a lamination assembly, including two groups of corresponding stamping tools, the stamping tools including a bottom plate, a base, a limit cover, a spring, a pressure head and a punch, the four corners of the top of the bottom plate are respectively provided with mounting holes, the bases are respectively arranged in the mounting holes; the limit covers are respectively arranged on the top of the base, the pressure head is movably arranged in the limit cover, and a spring is arranged between the pressure head and the base; a punching hole is arranged in the middle of the pressure head, and a guide groove is arranged on the pressure head on the outer side of the upper end of the punching hole. The utility model makes the processing work of riveting laminations simple and efficient through two groups of corresponding stamping tools, greatly improves the production efficiency, and can realize automated production in conjunction with stamping machinery and manipulators; the punch with titanium nitride coating has higher wear resistance during the working process; the first cone surface and the second cone surface of the punch ensure that the riveting process is correct and improves the yield rate.

Description

Technical Field

[0001] The utility model belongs to the technical field of riveting tooling dies and relates to a riveting die for a lamination assembly. Background Art

[0002] The lamination assembly is a key component in the lamination flexible coupling. For many years, it has been produced by manual and single riveting. A 4-hole lamination assembly needs to be riveted 8 times continuously to form. Under this production mode, the production efficiency is low, the quality stability is poor, the equipment safety is poor, the labor intensity of workers is high, and there are many inconveniences. At this time, it is necessary to design a mold that can be riveted and formed in one time, greatly improving the production efficiency, and the riveting quality is not affected by people. Summary of the invention

[0003] The utility model aims to overcome the deficiencies in the prior art, solve the problem of inconvenience in riveting a lamination assembly, and provide a riveting die for a lamination assembly.

[0004] In order to achieve the above purpose, the following technical solutions are adopted:

[0005] The riveting die for a stacking assembly comprises two groups of corresponding stamping tools, which include a bottom plate, a base, a limit cover, a spring, a pressure head and a punch. The four corners of the bottom plate are respectively provided with mounting holes, and the bases are respectively arranged in the mounting holes; the limit covers are respectively arranged on the top of the bases, and the pressure heads are movably arranged in the limit covers, and a spring is arranged between the pressure heads and the bases; a punching hole is arranged in the middle of the pressure head, and a guide groove is arranged on the pressure head on the outer side of the upper end of the punching hole; a punch is arranged in the punching hole, and a positioning hole that can cooperate with the punch is arranged on the base.

[0006] Preferably, a positioning groove is provided at the lower end of the pressure head, a positioning ring is provided on the top wall of the positioning groove outside the punching hole, and a fixing groove corresponding to the positioning groove is provided on the base.

[0007] Preferably, the upper end of the limit cover is provided with a limit ring that contracts inwardly, and the lower end of the pressure head is provided with a positioning boss that can cooperate with the limit ring; the distance between the lower surface of the limit ring and the base is 1.5-2 times the height of the positioning boss.

[0008] Preferably, the base is provided with connection holes evenly distributed on its circumference, and the bottom plate is provided with threaded holes corresponding to the connection holes.

[0009] Preferably, a disassembly hole is provided on the lower end surface of the positioning hole, and a through hole corresponding to the disassembly hole is provided on the bottom plate.

[0010] Preferably, the upper end of the punch is provided with a first conical surface and a second conical surface, the inclination angle of the first conical surface is 40-45°, and the inclination angle of the second conical surface is 80-90°.

[0011] Preferably, the punch surface is coated with a titanium nitride coating.

[0012] Preferably, the inner side wall of the guide groove is an inclined surface, and the inclination angle of the inclined surface is 100-110°.

[0013] Preferably, two annular oil storage grooves are provided on the inner side wall of the punching hole.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The utility model uses two groups of corresponding stamping tooling to make the processing of riveted laminations simple and efficient, greatly improves production efficiency, and can realize automated production in conjunction with a stamping machine and a manipulator; the punch with a titanium nitride coating has higher wear resistance during the working process; the first cone surface and the second cone surface of the punch ensure that the riveting process is correct and the yield rate is improved; the utility model has a simple structure and a clever design and is easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the use state of the utility model.

[0018] Figure 3 It is a schematic diagram of the base structure of the utility model.

[0019] Figure 4 It is a schematic diagram of the pressure head structure of the utility model.

[0020] Figure 5 It is a schematic diagram of the punch structure of the utility model.

[0021] In the figure: 1. bottom plate; 2. base; 3. limit cover; 4. spring; 5. pressure head; 6. punch; 7. mounting hole; 8. punching hole; 9. guide groove; 10. positioning hole; 11. positioning groove; 12. positioning ring; 13. fixing groove; 14. limit ring; 15. positioning boss; 16. connecting hole; 17. threaded hole; 18. disassembly hole; 19. through hole; 20. first cone surface; 21. second cone surface; 22. annular oil storage tank; 23. sleeve; 24. riveted retaining ring. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0023] like Figure 1-Figure 5 As shown, a lamination assembly riveting die includes two sets of corresponding stamping tools, and the two sets of stamping tools have the same structure;

[0024] The stamping tooling includes a bottom plate 1, a base 2, a limit cover 3, a spring 4, a pressure head 5 and a punch 6. The four corners of the top of the bottom plate 1 are respectively provided with mounting holes 7, and the bases 2 are respectively arranged in the mounting holes 7. The bottom plate 1 is used to provide mounting support for each component, and the lower end of the base 2 is fixed inside the mounting hole 7;

[0025] A limit cover 3 is provided on the upper side of the base 2, a pressure head 5 is movably provided in the limit cover 3, a spring 4 is provided between the pressure head 5 and the base 2, and the spring 5 can provide a pre-tightening force to the pressure head 5, so that the pressure head 5 is in the limit cover 3 and the base 2 is not moved. When the lamination assembly needs to be riveted, the pressure head 5 first presses against the lamination assembly;

[0026] A punch hole 8 is provided in the middle of the pressing head 5, and a guide groove 9 is provided on the pressing head 5 outside the upper end of the punch hole 8. When the stacking assembly is riveted, the guide groove 9 has a guiding function (it can position the riveting retaining ring 24 during riveting);

[0027] A punch 6 is arranged in the punching hole 8, and a lubricant is added between the punch 6 and the punching hole 8 to reduce friction resistance; a positioning hole 10 that can cooperate with the punch 6 is arranged on the base 2, and the lower end of the punch 6 is fixed inside the positioning hole 10.

[0028] Furthermore, a positioning groove 11 is provided at the lower end of the pressure head 5, a positioning ring 12 is provided on the top wall of the positioning groove 11 outside the punching hole 8, and a fixing groove 13 corresponding to the positioning groove 11 is provided on the base 2, and both ends of the spring 4 are fixed by the cooperation of the positioning groove 11 and the fixing groove 13.

[0029] Furthermore, the upper end of the limit cover 3 is provided with a limit ring 14 that shrinks inward, and the lower end of the pressure head 5 is provided with a positioning boss 15 that can cooperate with the limit ring 14. The pressure head 5 uses the cooperation between the limit ring 14 and the positioning boss 15 to prevent it from falling out of the limit cover 3;

[0030] The distance between the lower surface of the limiting ring 14 and the base 2 is 1.5-2 times the height of the positioning boss 15 , and this height difference is the movable height difference of the pressure head 5 .

[0031] Furthermore, the base 2 has connection holes 16 evenly distributed around its circumference, the bottom plate 1 has threaded holes 17 corresponding to the connection holes 16 , bolts are arranged in the connection holes 16 , and the bolts are screwed into the threaded holes to fix the base 2 on the bottom plate 1 .

[0032] Furthermore, a disassembly hole 18 is formed on the lower end surface of the positioning hole 10 ; a through hole 19 corresponding to the disassembly hole 18 is formed on the bottom plate 1 , and the through hole 19 and the disassembly hole 18 facilitate removal of the punch 6 from the base 5 .

[0033] Furthermore, the upper end of the punch 6 is provided with a first conical surface 20 and a second conical surface 21. The inclination angle of the first conical surface 20 is 40-45°, and the first conical surface 20 can prevent the orifice of the sleeve 23 from turning inward after riveting; the inclination angle of the second conical surface 21 is 80-90°, and the second conical surface 21 can enable more positive pressure to act on the riveting retaining ring 24 to prevent loosening.

[0034] Furthermore, the surface of the punch 6 is coated with a titanium nitride coating, and the titanium carbide coating makes the punch 6 have better wear resistance and can prevent the punch 6 from adhering to the riveted part after riveting.

[0035] Furthermore, the inner side wall of the guide groove 9 is an inclined surface, and the inclination angle of the inclined surface is 100-110°.

[0036] Furthermore, two annular oil storage grooves 22 are provided on the inner side wall of the punching hole 8, and lubricating oil is injected between the punch head 6 and the pressure head 5. A certain amount of lubricating oil can be stored in the annular oil storage grooves 22 to maintain a better lubrication effect.

[0037] Working principle: When the utility model is in use, two groups of riveted stacking sheets can be placed between two stamping tools, and the riveted retaining ring 24 can be placed in the guide groove 9 of the pressure head 5 located on the lower stamping tooling. Then, pressure is applied to the bottom plate 1 located on the upper stamping tooling, and the two groups of stamping tools are close to each other. Then, the pressure head 5 presses the riveted retaining ring 24 respectively, and the two bottom plates 1 continue to move closer. The punch 6 is pressed down and enters the inside of the sleeve 23. Then, the punch 6 squeezes and deforms the two ends of the sleeve 23 to expand, and the sleeve 23 and the riveted retaining ring 24 are deformed to fix the riveted stacking sheets; during the processing, the two groups of riveted stacking sheet assemblies can be processed in one operation, which greatly improves the work efficiency.

[0038] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A lamination assembly riveting die, comprising two sets of corresponding stamping tools, characterized in that: The punching tool comprises a bottom plate (1), a base (2), a limiting cover (3), a spring (4), a pressure head (5) and a punch (6); the bottom plate (1) is provided with mounting holes (7) at four corners on the top, and the base (2) is arranged in each of the mounting holes (7); the base (2) is provided with a limiting cover (3) on the top, and the pressure head (5) is movably arranged in the limiting cover (3); a spring (4) is arranged between the pressure head (5) and the base (2); a punching hole (8) is provided in the middle of the pressure head (5), and a guide groove (9) is provided on the pressure head (5) on the outer side of the upper end of the punching hole (8); the punch (6) is arranged in the punching hole (8), and the base (2) is provided with a positioning hole (10) capable of cooperating with the punch (6).

2. The lamination assembly riveting die according to claim 1, characterized in that: A positioning groove (11) is provided at the lower end of the pressure head (5), a positioning ring (12) is provided on the top wall of the positioning groove (11) outside the punching hole (8), and a fixing groove (13) corresponding to the positioning groove (11) is provided on the base (2).

3. The lamination assembly riveting die according to claim 1, characterized in that: The upper end of the limit cover (3) is provided with a limit ring (14) that contracts inwardly, and the lower end of the pressure head (5) is provided with a positioning boss (15) that can cooperate with the limit ring (14); the distance between the lower surface of the limit ring (14) and the base (2) is 1.5-2 times the height of the positioning boss (15).

4. The lamination assembly riveting die according to claim 1, characterized in that: The base (2) is provided with connection holes (16) evenly distributed on its circumference, and the bottom plate (1) is provided with threaded holes (17) corresponding to the connection holes (16).

5. The lamination assembly riveting die according to claim 1, characterized in that: A disassembly hole (18) is provided on the lower end surface of the positioning hole (10), and a through hole (19) corresponding to the disassembly hole (18) is provided on the bottom plate (1).

6. The lamination assembly riveting die according to claim 1, characterized in that: The upper end of the punch (6) is provided with a first conical surface (20) and a second conical surface (21); the inclination angle of the first conical surface (20) is 40-45°, and the inclination angle of the second conical surface (21) is 80-90°.

7. The lamination assembly riveting die according to claim 1, characterized in that: The surface of the punch (6) is coated with a titanium nitride coating.

8. The lamination assembly riveting die according to claim 1, characterized in that: The inner side wall of the guide groove (9) is an inclined surface, and the inclination angle of the inclined surface is 100-110°.

9. The lamination assembly riveting die according to claim 1, characterized in that: Two annular oil storage grooves (22) are provided on the inner side wall of the punching hole (8).

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