Special tool for stably punching flash hole in bottom of cartridge case

Abstract

The invention provides a special tool for stably punching a flash hole at the bottom of a cartridge case, which is characterized in that a large punching punch (4) is tightly arranged in a punching clamp (2) and is arranged in a punching sleeve (3); a punching cushion outer sleeve (9) and a punching upper cushion block (15) are sequentially placed in a punching lower die sleeve (10), three return ejector pins (11) are inserted into a punching lower cushion block (14), then the punching lower cushion block (14) inserted with the return ejector pins (11) is placed in the punching lower die sleeve (10), a punching cushion block (12) is placed in the punching lower die sleeve (10), and a return cushion (13) is placed in the punching cushion block (12); a K pipe (17) and a spring (16) are sequentially arranged on a punching upper cushion block (15) in a sleeving mode, a punching die (6) is placed in a punching die outer sleeve (5), and two punching needles (19) are placed in the punching die (6). The problems that a traditional tool is low in positioning precision, low in reliability, low in tool replacement speed and high in punching needle cost, and consequently the tool cost is high are solved, and the high practical application value is achieved.

Description

TECHNICAL FIELD

[0001] The application is a special tool for stabilizing the bottom of a shell and punching a hole, and belongs to the technical field of machinery. BACKGROUND

[0002] In the process of shell stamping, the bottom of the shell is punched to form a hole, which is a very important process. The positioning of the hole position is a very critical production link, which directly determines the product quality, time cost and production efficiency. Because the position of the hole is relatively fixed and needs to be precisely positioned by a punch, the punch is wrapped in the innermost part of the tool. The current processing tool shell bottom positioning device cannot completely fix the shell, which often causes the shell punching position to be eccentric, and often bends or even breaks the punch. The tool needs to be disassembled to replace the punch, and the punch has a length of 10 cm, which greatly increases the processing preparation time cost and manufacturing cost, and the positioning accuracy cannot be quickly guaranteed. The tool replacement speed is extremely long, the tool consumption is large, and the positioning accuracy is low, the tool replacement time is long, the processing efficiency is low, the manufacturing time cost is high, and the operation safety is poor. The defects of the device cannot guarantee the consistency of the processing quality of a large number of shells, and are not suitable for the needs of product lean, precision, and timely supply. The positioning accuracy and reliability, and the tool replacement time are directly related to the production efficiency and production quality of the shell stamping. SUMMARY

[0003] The technical problem of the present application is: The current processing tool shell bottom positioning device cannot completely fix the shell, which often causes the shell punching position to be eccentric, and often bends or even breaks the punch. The tool needs to be disassembled to replace the punch, and the punch has a length of 10 cm, which greatly increases the processing preparation time cost and manufacturing cost, and the positioning accuracy cannot be quickly guaranteed. The tool replacement speed is extremely long, the tool consumption is large, and the positioning accuracy is low, the tool replacement time is long, the processing efficiency is low, the manufacturing time cost is high, and the operation safety is poor. The defects of the device cannot guarantee the consistency of the processing quality of a large number of shells, and are not suitable for the needs of product lean, precision, and timely supply.

[0004] The purpose of the present application is: The purpose of the present application is to provide a special tool for stabilizing the transmission hole of the bottom of a shell, which realizes fast and accurate positioning, fast replacement, improves positioning accuracy and replacement time, reduces tool cost, and solves the problems of low positioning accuracy, long tool replacement time, low processing efficiency, high manufacturing cost, poor operation safety, etc. The tool is characterized by accurate positioning, fast replacement, low cost, simple and convenient operation, good reliability and safety, and can significantly improve the processing product quality assurance capability, save processing time, improve processing efficiency, improve supply capacity, reduce processing preparation time cost, and save processing manufacturing cost. It is worth promoting for internal large-scale use.

[0005] The technical solution of the present application is: The special tool for stabilizing the transmission hole of the bottom of a shell provided by the present application mainly comprises: a punching pad (1), a punching clamp (2), a punching sleeve (3), a punching big punch (4), a punching die sleeve (5), a punching die (6), a punching lower pad (7), a punching upper die sleeve (8), a punching pad sleeve (9), a punching lower die sleeve (10), a return pin (11), a punching pad block (12), a return pad (13), a punching lower pad block (14), a punching upper pad block (15), a spring (16), a K tube (17), a positioning key (18), and a punching pin (19).

[0006] Preferably, the punching die sleeve (5), the punching die (6), the punching die lower pad (7), and the positioning key (18) can fix the position of the shell, accurately position the transmission hole position of the shell, improve the positioning accuracy, and avoid damage to the punching pin.

[0007] Preferably, the punching upper die sleeve (8) and the punching pad sleeve (9) can be used to quickly replace the punching pin and improve the replacement efficiency.

[0008] Preferably, the punching pin (9) and the punching upper pad block (15) can be used to reduce the length of the punching pin and reduce the tool cost, wherein the punching pin (9) requires heat treatment of 64HRC-66HRC and titanium plating treatment to ensure strength and wear resistance.

[0009] Preferably, the ejector pin (11) and the K tube (17) can be used to quickly and stably eject the shell from the punching die (6) to realize material return, wherein there are three ejector pins (11) in a set of tools to stably eject the shell.

[0010] Preferably, the spring (16) can be used to quickly restore the ejector pin (11) and the K tube (17) to their original positions after the shell is ejected from the punching die (6) by the ejector pin (11) and the K tube (17).

[0011] The punch pin (19) is stably fixed by using the punch lower pad (7), the punch upper pad block (15) and the positioning key (18), wherein the punch lower pad (7) is a multi-section open structure, the punch upper pad block (15) matched with the multi-section open structure can stably fix the upper pad block (15), and the positioning key (18) can fix the position of the punch lower pad (7) in the punch die outer sleeve (5).

[0012] The punch large punch (4) is fixed by using the punch pad (1), the punch clamp (2) and the punch sleeve (3), wherein the punch clamp (2) is a multi-section structure and can stably grab the punch large punch (4), and the punch pad (1) and the punch sleeve (3) can stably fix the punch clamp (2).

[0013] The return pad (13) is fixed in position by using the punch pad block (12), so that the return pad (13) moves in the punch pad block (12) and the return ejector pin (11) is ejected.

[0014] The return pad (13) is fixed in position by using the punch pad block (12), so that the return pad (13) moves in the punch pad block (12) and the return ejector pin (11) is ejected, wherein the punch pad block (12) requires heat treatment of 60HRC-64HRC to ensure strength and wear resistance.

[0015] The return pad (13) is used to eject the return ejector pin (11) and then eject the K tube (17), so that the shell is withdrawn from the punch die (6). The return pad (13) requires heat treatment of 58HRC-60HRC to ensure strength and wear resistance.

[0016] The return ejector pin (11) is stably fixed in position by using the punch lower pad block (14), so that the return ejector pin (11) stably ejects the K tube (17) and then the shell is withdrawn from the punch die (6). The punch lower pad block (14) has a positioning key notch, the positioning key is used to fix the position of the punch lower pad block (14), and the return pad (13) requires heat treatment of 58HRC-62HRC to ensure strength and wear resistance.

[0017] The return punch pad outer sleeve (9), the punch pad block (12) and the punch lower pad block (14) are stably fixed in position by using the punch lower die sleeve (10).

[0018] The advantages and beneficial effects of the present application are: The present application aims to design a special tool for stabilizing the transmission hole of the bottom of a shell, through the design of a punching die outer sleeve (5), a punching die (6), a punching die lower pad (7), and a positioning key (18) to fix the position of the shell, accurately position the transmission hole of the shell, improve the positioning accuracy, and avoid damage to the punch pin. The use of a punching upper die sleeve (8) and a punching pad outer sleeve (9) can quickly replace the punch pin, improving the efficiency of the replacement. The use of a punch pin (9) and a punching upper pad block (15) can reduce the length of the punch pin and reduce the cost of the tool, wherein the punch pin (9) requires heat treatment of 64HRC~66HRC and titanium plating treatment to ensure strength and wear resistance. The problems of low positioning accuracy, long tool replacement time, low processing efficiency, high manufacturing time cost, and poor operation safety of the original tool are solved, and it is worth popularizing and using internally on a large scale. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0020] Figure 1 It is a special tool for stabilizing the transmission hole of the bottom of a shell of the present application; Figure 2 Punching pad schematic diagram; Fig. 3 (a) and (b) are respectively a punch clamp structure and a top view schematic diagram; Fig. 4 (a), (b) and (c) are respectively a punch hole punch sleeve structure, a top view and a sectional view schematic diagram; Fig. 5 (a) and (b) are respectively a punch hole large punch structure, a right view schematic diagram; Figure 6 Punching die outer sleeve schematic diagram; Figure 7 Punching die schematic diagram; Fig. 8 (a) and (b) are respectively a punch die lower pad right view and a top view schematic diagram; Fig. 9 (a) and (b) are respectively a punch upper die sleeve top view and a structure schematic diagram; Figure 10 Punching pad outer sleeve schematic diagram; Fig. 11 (a) and (b) are respectively a punch lower die sleeve top view and a structure schematic diagram; Figure 12 It is a return top pin schematic diagram; Figure 13 Punching pad block schematic diagram; Figure 14 Return pad schematic diagram; Fig. 15 (a) and (b) are respectively a punch lower pad structure and a top view schematic diagram; Fig. 16 (a) and (b) are respectively a punch upper pad structure and a top view schematic diagram; Figure 17 Fig. 17 (a) and (b) are respectively a K tube structure and a right view schematic diagram; Fig. 18 (a) and (b) are respectively a positioning key structure and a right view schematic diagram; Figure 19 Fig. 19 is a punch pin schematic diagram.

[0021] Wherein, 1. punch punch pad 2. punch clamp 3. punch punch sleeve 4. punch big punch 5. punch die sleeve 6. punch die 7. punch die lower pad 8. punch upper die sleeve 9. punch pad sleeve 10. punch lower die sleeve 11. return top pin 12. punch pad 13. return pad 14. punch lower pad 15. punch upper pad 16. spring 17. K tube 18. positioning key 19. punch pin. DETAILED DESCRIPTION

[0022] To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0023] It should be noted that the features in the embodiments of the present application and the embodiments can be combined with each other without conflict, and each embodiment can be mutually referenced and quoted. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0024] Figure 1 It is a special tool for stably punching a transmission hole in the bottom of a shell.

[0025] The special tool for stably punching a transmission hole in the bottom of a shell provided by the present application mainly comprises a punch punch pad (1), a punch clamp (2), a punch punch sleeve (3), a punch big punch (4), a punch die sleeve (5), a punch die (6), a punch die lower pad (7), a punch upper die sleeve (8), a punch pad sleeve (9), a punch lower die sleeve (10), a return top pin (11), a punch pad (12), a return pad (13), a punch lower pad (14), a punch upper pad (15), a spring (16), a K tube (17), a positioning key (18) and a punch pin (19).

[0026] Figures 2 to 19 They are structure schematic diagrams of respective components.

[0027] Referring to the various drawings, the tooling functions by the following steps: Step 1: Prepare tooling parts.

[0028] Step 2: Assemble the tooling. Tighten the punching big punch (4) into the punching clamp (2), install the punching punch sleeve (3), and install the punching punch pad (1) into the punching punch sleeve (3). Put the punching pad sleeve (9), the punching upper pad block (15) into the punching lower die sleeve (10) in turn, insert the three return top pins (11) into the punching lower pad block (14), then put the punching lower pad block (14) with the return top pins (11) into the punching lower die sleeve (10), put the punching pad block (12) into the punching lower die sleeve (10), and put the return pad (13) into the punching pad block (12). Put the K tube (17) and the spring (16) onto the punching upper pad block (15) in turn, put the punching die (6) into the punching die sleeve (5), put the two punching pins (19) into the punching die (6), and cover the punching die lower pad (7) into the punching die sleeve (5) with the punching die (6) and the punching pins (19), and fix the position of the punching die lower pad (7) with the positioning key (18). Combine and fix the assembled punching upper die sleeve (8) with the punching lower die sleeve (10), and complete the assembly.

[0029] Step 3: Tooling working process. The shell is transported by the mechanical hand from the previous process to the space between the punching big punch (4) and the punching die (6), the punching big punch (4) pushes against the inner bottom of the shell and punches the shell towards the punching pin (19) in the punching die (6), and the punching pin punches the bottom of the shell to form a flash hole. The return top pin (11) pushes against the K tube (17), the K tube (17) pushes against the bottom of the shell, and the shell is pushed out of the punching die (6). The spring (16) resets the K tube (17) that is pushed out, the K tube (17) drives the return top pin (11) to reset, and at the same time the punching big punch (4) device is pulled back to reset. The shell is transported by the mechanical hand to the next process, and the process of punching the flash hole for one shell is completed.

[0030] Step 4: Change the punching pin (19) process. Remove the assembled punching upper die sleeve (8) from the punching lower die sleeve (10), take out the assembled punching die (6), punching die lower pad (7), positioning key (18), and punching pin (19), remove the positioning key (18), remove the punching die lower pad (7), and replace the punching pin (19). Then, according to step 2, cover the punching die lower pad (7) into the punching die sleeve (5) with the punching die (6) and the punching pin (19), and fix the position of the punching die lower pad (7) with the positioning key (18). Combine and fix the assembled punching upper die sleeve (8) with the punching lower die sleeve (10), and complete the assembly.

[0031] The special tool for stabilizing the transmission hole in the bottom of the shell can accurately position the transmission hole, quickly replace the tool and use a short punch needle compared with the special tool for punching the transmission hole in the bottom of the shell. The punch hole die sleeve (5), punch hole die (6), punch hole die lower pad (7) and positioning key (18) can fix the position of the shell, accurately position the transmission hole of the shell, improve the positioning accuracy and avoid the damage of the punch needle. The punch hole upper die sleeve (8) and punch hole pad sleeve (9) can quickly replace the punch needle and improve the replacement efficiency. The punch needle (9) and punch hole upper pad block (15) can reduce the length of the punch needle and reduce the cost of the tool. The problems of low positioning accuracy and reliability, slow tool replacement speed, high punch needle cost and high tool cost of the traditional tool are solved, and the tool has high practical application value.

[0032] It should be noted that the above process operations can be combined to different degrees. In order to be simple, the implementation modes of various combinations will not be described, and those skilled in the art can flexibly adjust the order of the above operation steps or flexibly combine the above steps according to actual needs.

[0033] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A special tool for stabilizing the flash hole in the bottom of a cartridge case, characterized in that It includes: Punching punch pad (1), punch clamp (2), punch punch sleeve (3), punch big punch (4), punch die sleeve (5), punch die (6), punch die lower pad (7), punch upper die sleeve (8), punch pad sleeve (9), punch lower die sleeve (10), return goods ejector pin (11), punch pad block (12), return goods pad (13), punch lower pad block (14), punch upper pad block (15), spring (16), K tube (17), positioning key (18), punch pin (19), wherein: The punch big punch (4) is tightly put into the punch clamp (2), and the punch punch pad (1) is put into the punch punch sleeve (3). The punch pad sleeve (9) and the punch upper pad block (15) are put into the punch lower die sleeve (10) in turn, and the three return goods ejector pins (11) are inserted into the punch lower pad block (14). Then the punch lower pad block (14) with the return goods ejector pins (11) is put into the punch lower die sleeve (10), the punch pad block (12) is put into the punch lower die sleeve (10), and the return goods pad (13) is put into the punch pad block (12). The K tube (17) and the spring (16) are put on the punch upper pad block (15) in turn, the punch die (6) is put into the punch die sleeve (5), the two punch pins (19) are put into the punch die (6), and the punch die lower pad (7) is put into the punch die sleeve (5) with the punch die (6) and the punch pin (19), and the positioning key (18) is used to fix the position of the punch die lower pad (7). The assembled punch upper die sleeve (8) and the punch lower die sleeve (10) are combined and fixed to complete the assembly.

2. The tooling of claim 1, wherein, Wherein: The shell is transported by the mechanical hand from the previous process to the position between the punch big punch (4) and the punch die (6). The punch big punch (4) pushes against the inner bottom of the shell to punch the shell towards the punch pin (19) in the punch die (6). The punch pin (19) punches the bottom of the shell to form a flash hole. The return goods ejector pin (11) pushes against the K tube (17), and the K tube (17) pushes against the bottom of the shell to eject the shell from the punch die (6). The spring (16) resets the ejected K tube (17), and the K tube (17) drives the return goods ejector pin (11) to reset. At the same time, the punch big punch (4) device is pulled back to reset. The shell is transported by the mechanical hand to the next process, and the shell punching flash hole operation is completed.

3. The tooling of claim 1, wherein, Wherein: The assembled punch upper die sleeve (8) is removed from the punch lower die sleeve (10), and the assembled punch die (6), punch die lower pad (7), positioning key (18) and punch pin (19) are taken out. The positioning key (18) is removed, the punch die lower pad (7) is removed, and the punch pin (19) is replaced. Then according to step 2, the punch die lower pad (7) is put into the punch die sleeve (5) with the punch die (6) and the punch pin (19), and the positioning key (18) is used to fix the position of the punch die lower pad (7). The assembled punch upper die sleeve (8) and the punch lower die sleeve (10) are combined and fixed to complete the assembly of the replaced punch pin (19).

4. The tooling of claim 1, wherein, Wherein: The use of punch die sleeve (5), punch die (6), punch die lower pad (7) and positioning key (18) can fix the position of the shell, accurately position the flash hole of the shell, improve the positioning accuracy, and avoid damage to the punch pin. Using punch upper die cover (8), punch pad cover (9) can quickly replace the punch pin, improve the efficiency of replacement.

5. The tooling of claim 1 wherein, Among them: Using punch pin (9), punch upper pad block (15) can reduce the length of the punch pin and reduce the cost of the tool, wherein the punch pin (9) is heat treated 64HRC~66HRC and titanium plated; Using the ejector pin (11) and the K tube (17) can quickly and stably eject the shell from the punch die (6), and realize the material return, wherein there are three ejector pins (11) in a set of tooling, which can stably eject the shell; Using the spring (16), the ejector pin (11) and the K tube (17) can be quickly restored to their original position after the K tube (17) is ejected by the ejector pin (11) and the shell is ejected from the punch die (6).

6. The tooling of claim 1 wherein, Among them: Using punch die lower pad (7), punch upper pad block (15) and positioning key (18) can stably fix the punch pin (19), wherein the punch die lower pad (7) is a multi-section open structure, which can stably fix the upper pad block (15) in combination with the multi-section open structure of the punch upper pad block (15), and the positioning key (18) can fix the position of the punch die lower pad (7) in the punch die outer cover (5).

7. The tooling of claim 1 wherein, Among them: Using punch pad (1), punch clamp (2) and punch sleeve (3) can fix the punch big punch (4), wherein the punch clamp (2) is a multi-section structure which can stably grab the punch big punch (4), and the punch pad (1) and the punch sleeve (3) can stably fix the punch clamp (2).

8. The tooling of claim 1 wherein, Among them: Using punch pad block (12) can fix the position of return goods pad (13) to make return goods pad (13) move in punch pad block (12) to realize the ejection of return goods ejector pin (11).

9. The tooling of claim 1 wherein, Among them: Using punch pad block (12) can fix the position of return goods pad (13) to make return goods pad (13) move in punch pad block (12) to realize the ejection of return goods ejector pin (11), wherein the punch pad block (12) is heat treated 60HRC~64HRC; Using return goods pad (13) can eject return goods ejector pin (11) and then eject K tube (17) to realize the withdrawal of the shell from the punch die (6), wherein the return goods pad (13) is heat treated 58HRC~60HRC.

10. The tooling of any of claims 1-9, wherein, Among them: Using punch lower pad block (14) can stably fix the position of return goods ejector pin (11) to realize the stable ejection of K tube (17) by return goods ejector pin (11) and then realize the withdrawal of the shell from the punch die (6). Among them, the punch lower pad block (14) has a positioning key notch, which is used to fix the position of the punch lower pad block (14), and the return goods pad (13) is heat treated 58HRC~62HRC; Using punch lower die cover (10) to fix the position of return goods punch pad cover (9), punch pad block (12) and punch lower pad block (14).

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