Metal shell punch forming equipment and punch forming process

Abstract

The invention relates to metal shell punch forming equipment and a punch forming process, and relates to the technical field of punch forming. Comprising a base, a stamping table and a machine shell are arranged on the base, a stamping driving mechanism and a stamping assembly comprising a stamping ejector block are arranged on the machine shell, and the stamping driving mechanism comprises a stamping hydraulic cylinder; a base replacing device is arranged on the stamping table and comprises a rotating seat and a peripheral connecting handle, a base mounting table is arranged at the end of the connecting handle, a stamping base is arranged on the base mounting table, and the rotating seat can move the stamping base to the position below the stamping ejector block. The invention further relates to a punch forming process adopting the equipment. The punch forming process comprises the steps of base replacement, sheet forming, bending and punching. The punching base can be conveniently replaced to meet different punching requirements, the plate punching forming process is efficiently completed, and the production efficiency and flexibility are improved.

Description

Technical Field

[0001] This application relates to the field of stamping forming technology, and particularly to a metal shell stamping forming device and a stamping forming process. Background Art

[0002] In the field of mechanical manufacturing, shell forming is an extremely crucial process and is widely used in many industries such as automobiles, aerospace, and electronic devices. With the continuous development of technology, the requirements for product performance and reliability in various industries have been gradually increasing, making the precision, efficiency, and quality standards for shell forming increasingly stringent. An efficient and precise shell forming technology can not only improve the overall performance and reliability of products but also effectively reduce production costs and enhance the competitiveness of enterprises in the market. This situation has prompted researchers and engineers to continuously explore and improve the processing methods and equipment for shell forming to meet the high requirements of various industries for shell forming.

[0003] In traditional shell forming processing, to obtain the final product shape, the method of performing multiple stampings on a plate is often used. Before each stamping operation, it is necessary to replace the stamping base mold to adapt to different stamping requirements. These operations are mainly manually completed by operators. The operator needs to remove the old stamping base mold from the stamping table and then install a new mold, and at the same time, ensure that the installation position of the mold is accurate. Moreover, during the multiple stamping process, after each mold replacement, it is necessary to perform debugging and calibration to ensure the precision and quality of stamping.

[0004] However, these existing processing methods have obvious drawbacks. Manually replacing the stamping base mold multiple times not only significantly increases labor costs but also makes the operation process extremely cumbersome, resulting in low production efficiency. Moreover, frequent manual operations are prone to errors, affecting the forming precision and quality of products, and it is difficult to meet the production requirements of large-scale and high-efficiency. Summary of the Invention

[0005] To solve the above problems, this application provides a metal shell stamping forming device and a stamping forming process.

[0006] A metal shell stamping forming device includes a base, on which a stamping table and a machine shell are provided. A switch is installed on the stamping table, and a stamping driving mechanism and a stamping component are provided on the machine shell. The stamping component includes a stamping top block, and the stamping driving mechanism includes a stamping hydraulic cylinder for driving the stamping top block; A base replacement device is provided on the stamping table. The base replacement device includes a rotating seat, and a plurality of connecting handles are provided on the peripheral side of the rotating seat. At the end of each connecting handle away from the rotating seat, a base installation table is provided, and a stamping base for forming a plate is installed on the base installation table. The rotating seat moves the stamping base to below the stamping top block by rotation.

[0007] By adopting the above technical solution, a stamping hydraulic cylinder is used to drive a stamping top block to perform a stamping action. The rotating base of the base replacement device rotates to drive the stamping base to move below the stamping top block, avoiding the need for manual replacement of the stamping base mold multiple times, reducing labor costs, simplifying the operation process, improving production efficiency, reducing errors caused by manual operation, improving the forming accuracy and quality of products, and meeting the production requirements of large-scale and high-efficiency production.

[0008] Preferably, a moving chute is formed on the base mounting table, and a slider slidably mounted with the moving chute is formed on the stamping base; the height of the base mounting table is higher than that of the connecting handle and the rotating base, and a containing groove is formed. A bearing table is arranged in the containing groove, and a receiving chute is formed on the bearing table. The height of the receiving chute is the same as that of the moving chute, and the stamping base can slide from the moving chute to the receiving chute.

[0009] By adopting the above technical solution, the cooperation of the moving chute and the slider facilitates the movement of the stamping base on the base mounting table. The provision of the containing groove and the bearing table provides a placement space for the stamping base. The receiving chute has the same height as the moving chute, enabling the stamping base to smoothly slide from the moving chute to the receiving chute, facilitating the replacement of the stamping base, reducing manual operation, reducing labor costs, improving production efficiency, and also being conducive to ensuring stamping accuracy and quality.

[0010] Preferably, the bearing table is circular, and an arc surface matching the shape of the bearing table is formed on one side of the base mounting table facing the bearing table.

[0011] By adopting the above technical solution, the bearing table is set to be circular, and the base mounting table is provided with an arc surface matching its shape, facilitating the transition of the stamping base along the moving chute to the bearing table, facilitating the movement of the stamping base onto the bearing table, and facilitating subsequent stamping operations.

[0012] Preferably, a fixing component is arranged on the bearing table. The fixing component includes fixing seats installed on both sides of the receiving chute. An activity slot is formed in the fixing seat, and a pressing shaft is arranged in the activity slot. A through hole is formed at the bottom position of the bearing table corresponding to the fixing seat to form a pressing and fixing through hole. A return spring is sleeved on the pressing shaft, and the pressing shaft can be movably inserted into the pressing and fixing through hole.

[0013] By adopting the above technical solution, a fixing component is arranged on the bearing table. Through the fixing seat, the activity slot, the pressing shaft, the pressing and fixing through hole, and the return spring, the pressing shaft can be movably inserted into the pressing and fixing through hole to fix the stamping base on the bearing table, avoiding the displacement of the stamping base during the stamping process, and improving the stamping accuracy and quality.

[0014] Preferably, a pressing block is fixedly installed at the top of the pressing shaft. The pressing block extends out of the movable groove towards the direction of the receiving sliding groove, and a pressing notch for pressing and fixing the stamping base is formed on the pressing block.

[0015] By adopting the above technical solution, the pressing block presses the stamping base through the pressing notch to fix the stamping base.

[0016] Preferably, inclined surfaces are formed on two opposite surfaces of the connecting handle to form positioning inclined surfaces, and an inclined surface is formed at the bottom of the pressing shaft to form a pressing inclined surface. The pressing inclined surface and the positioning inclined surface are arranged facing each other.

[0017] By adopting the above technical solution, the pressing inclined surface and the positioning inclined surface enable the pressing shaft to press and fix the connecting handle.

[0018] Preferably, the stamping assembly further includes a mounting plate, and the output shaft of the stamping hydraulic cylinder is inserted into one end of the mounting plate away from the stamping hydraulic cylinder; The stamping driving mechanism further includes an electric sliding platform. A sliding rail for the electric sliding platform to move is formed on the machine shell, and the stamping hydraulic cylinder and the mounting plate are both installed on the electric sliding platform.

[0019] By adopting the above technical solution, the stamping driving mechanism is additionally provided with an electric sliding platform. The machine shell is provided with a sliding rail for it to move. The stamping hydraulic cylinder and the mounting plate are installed on the electric sliding platform, which can flexibly adjust the stamping position, further improve the flexibility and accuracy of stamping, reduce manual operation, improve production efficiency and the forming precision and quality of products, and reduce labor costs.

[0020] Preferably, two pressure switches are installed on one side of the mounting plate facing the stamping table, and the pressure switches are vertically aligned with the fixed seat.

[0021] By adopting the above technical solution, the stamping process is controlled by the pressure switches, which improves the automation degree and accuracy of the stamping forming equipment and avoids errors caused by manual operation.

[0022] Preferably, a rotating shaft is connected to the bottom of the rotating seat, a driven gear is installed on the rotating shaft, and the base replacement device further includes a driving gear meshing with the driven gear and a motor for driving the driving gear.

[0023] By adopting the above technical solution, the motor is used to drive the driving gear, the driving gear drives the driven gear meshing with it, and then the rotating seat connected to the rotating shaft rotates, realizing automatic replacement of the stamping base, avoiding manual replacement of the stamping base die multiple times, reducing labor costs, simplifying the operation process, improving production efficiency, and at the same time reducing manual operation errors and improving the forming precision and quality of products.

[0024] A stamping forming process for a metal shell, comprising the following steps: S1. Replace the base, control the rotation of the rotating seat, rotate the stamping base for punching through holes under the stamping top block, and then push the stamping base along the moving chute and the bearing chute to the bearing table in sequence; S2. Sheet forming, place the workpiece to be processed on the stamping base, start the stamping drive mechanism to stamp the workpiece, the workpiece is stamped to form a plurality of through holes, and several base pieces are formed based on the through holes; S3. Bending, repeat step S1 to replace the stamping base, place the base piece on the newly replaced stamping base for bending, start the stamping drive mechanism to process the base piece to form a bent piece; S4. Punching, repeat step S1 to replace the stamping base, place the bent piece on the newly replaced stamping base for punching, start the stamping drive mechanism to punch the bent piece to form a formed workpiece.

[0025] By adopting the above technical solution, using the stamping forming equipment, the replacement of the stamping base is realized by the rotation of the rotating seat, reducing the operation of manually replacing the mold, reducing the labor cost, and improving the production efficiency; pushing the stamping base along the moving chute and the bearing chute to the bearing table to ensure the accurate installation of the stamping base; performing sheet forming, bending, and punching operations step by step to realize efficient and precise shell forming, improving the forming accuracy and quality of the product, meeting the production requirements of large scale and high efficiency, reducing the production cost, and improving the overall performance and reliability of the product.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. A base replacement device is provided on the stamping table, and different stamping bases are driven by the rotation of the rotating seat to move under the stamping top block, avoiding manual replacement of the stamping base mold multiple times and reducing the labor cost; 2. By adopting the method of automatically replacing the stamping base, the operation process is simplified and the production efficiency is improved; 3. Reducing manual operation, reducing errors, improving the forming accuracy and quality of the product, and meeting the production requirements of large scale and high efficiency. Description of the Drawings

[0027] Figure 1 is a three-dimensional view of an embodiment of the present application; Figure 2 is a three-dimensional view of the base replacement device; Figure 3 is a three-dimensional view of the specific structure of the fixing component; Figure 4 is a three-dimensional view of the rotating seat, the connecting handle, and the base mounting table; Figure 5 is a three-dimensional sectional view of the specific structure of the fixing component; Figure 6 and Figure 7 are perspective views of the final pressing shaft and the pressing and fixing block.

[0028] Description of the reference numerals: 10, machine housing; 11, stamping hydraulic cylinder; 12, slide rail; 13, electric sliding platform; 14, mounting plate; 15, stamping top block; 16, pressure switch; 20, base; 21, stamping table; 22, motor; 23, driving gear; 24, rotating shaft; 25, driven gear; 26, rotating seat; 261, connecting handle; 262, positioning inclined surface; 263, base mounting table; 264, stamping base; 265, slider; 266, moving chute; 27, bearing table; 271, receiving chute; 272, pressing and fixing through hole; 28, storage groove; 31, fixing seat; 32, movable groove; 33, return spring; 34, pressing and fixing block; 35, pressing and fixing notch; 36, final pressing shaft; 37, pressing and fixing inclined surface. Detailed implementation manners

[0029] The present application will be further described in detail below with reference to the accompanying drawings.

[0030] In the description of the invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0031] The embodiment of the present application discloses a metal shell stamping and forming device. Referring to Figure 1 and Figure 2, including a base 20, a stamping drive mechanism, a stamping assembly and a base replacement device. Among them, a stamping table 21 and a machine housing 10 are provided on the base 20. A switch is installed on the stamping table 21. The stamping drive mechanism and the stamping assembly are provided on the machine housing 10. The base replacement device is provided on the stamping table 21. The stamping top block 15 of the stamping assembly works under the drive of the stamping hydraulic cylinder 11 of the stamping drive mechanism. The rotating seat 26 of the base replacement device can move the stamping base 264 to the lower part of the stamping top block 15 through rotation for stamping work, achieving the effect of reducing manual participation in the die-changing process, improving production efficiency and forming accuracy. The automatic die-changing and stamping operations of the base replacement device can avoid errors caused by manual operations and save time. Specifically, the stamping assembly includes a stamping top block 15 and a mounting plate 14. The stamping drive mechanism includes a stamping hydraulic cylinder 11 for driving the stamping top block 15 and an electric sliding platform 13. The shape of the stamping top block 15 is designed according to the forming requirements of the sheet metal. The mounting plate 14 is used to stably install the stamping top block 15, creating a gap between the stamping hydraulic cylinder 11 and the stamping top block 15 to avoid impact damage to the human body caused by the stamping hydraulic cylinder 11, playing a pre-protection role. The output shaft of the stamping hydraulic cylinder 11 is inserted into the end of the mounting plate 14 away from the stamping hydraulic cylinder 11, and the stamping top block 15 is moved up and down through hydraulic drive for stamping operations. When the stamping hydraulic cylinder 11 returns, the stamping top block 15 abuts against the mounting plate 14 for limiting, avoiding excessive movement of the stamping hydraulic cylinder 11 during reset. The electric sliding platform 13 is installed on the slide rail 12 opened on the machine housing 10. Both the stamping hydraulic cylinder 11 and the mounting plate 14 are installed on the electric sliding platform 13. The electric sliding platform 13 drives the stamping assembly to move on the slide rail 12, which can adjust the stamping position and also the stamping stroke of the stamping hydraulic cylinder 11. The electric sliding platform 13 is driven by a motor 22 to realize movement through a screw-nut pair, and can flexibly adjust the position of the stamping top block 15 to adapt to different stamping requirements. Two pressure switches 16 are installed on the side of the mounting plate 14 facing the stamping table 21. The pressure switches 16 are vertically aligned with the fixed seat 31. The pressure switches 16 are set as normal and are used to control the opening and closing of the stamping hydraulic cylinder 11. When the pressure reaches the preset value, it will control the stamping hydraulic cylinder 11 to open, and when the pressure is insufficient, it will control the stamping hydraulic cylinder 11 to close.

[0032] Refer to Figure 3 , Figure 4 and Figure 5, the base replacement device includes a rotating base 26, a connecting handle 261, a base mounting table 263, and a stamping base 264. The bottom of the rotating base 26 is connected to a rotating shaft 24, and a driven gear 25 is installed on the rotating shaft 24. The base replacement device further includes a driving gear 23 meshing with the driven gear 25 and a motor 22 for driving the driving gear 23. The connecting handle 261 is fixed to the circumferential side of the rotating base 26, and its shape is like a handle. The base mounting table 263 is fixedly connected to the connecting handle 261, and the base mounting table 263 is used for mounting the stamping base 264. The stamping base 264 is used for sheet metal forming and can be designed into different shapes and structures according to different forming requirements. The motor 22 drives the driving gear 23 to rotate, and the driving gear 23 drives the driven gear 25 and the rotating shaft 24 to rotate, so that the rotating base 26 rotates, and different stamping bases 264 are moved below the stamping top block 15. Such a design makes the replacement of the stamping base 264 more automated and efficient, avoiding the cumbersome operation of manual frequent die replacement. Through the automated stamping drive mechanism and the base replacement device, the flexible drive of the stamping top block 15 and the automatic replacement of the stamping base 264 are realized. Compared with the traditional manual die-changing method, the labor cost is greatly reduced, and it can better adapt to different stamping requirements.

[0033] Refer to Figure 5 , Figure 6 and Figure 7 , a moving chute 266 is opened on the base mounting table 263, a slider 265 slidably installed with the moving chute 266 is opened on the stamping base 264. The height of the base mounting table 263 is higher than that of the connecting handle 261 and the rotating base 26, and a containing groove 28 is formed. A bearing table 27 is arranged in the containing groove 28, and a receiving chute 271 is opened on the bearing table 27. The opening height of the receiving chute 271 is the same as that of the moving chute 266. The stamping base 264 can slide from the moving chute 266 to the receiving chute 271. The moving chute 266 adopts a dovetail groove structure, and the shape of the slider 265 matches that of the moving chute 266 to ensure the stability of the stamping base 264 during the sliding process. The bearing table 27 is set to be circular, and an arc surface matching the shape of the bearing table 27 is opened on one side of the base mounting table 263 facing the bearing table 27, facilitating the smooth transition of the stamping base 264 from the moving chute 266 to the receiving chute 271. The setting of the bearing table 27 provides a certain bearing capacity during stamping and also makes the installation and movement of the stamping base 264 more convenient. By opening chutes on the base mounting table 263 and the bearing table 27, the stamping base 264 can slide smoothly, facilitating the replacement of the stamping base 264. The circular bearing table 27 and the matching arc surface design ensure the smooth rotation of the rotating base 26, reduce the jamming phenomenon during die change, improve the efficiency and accuracy of die change, further optimize the performance of the stamping forming equipment, and play an improved role in the prior art.

[0034] A fixing component is provided on the bearing table 27. The fixing component includes fixing seats 31 installed on both sides of the receiving chute 271. An activity slot 32 is formed in the fixing seat 31. A pressing shaft 36 is arranged in the activity slot 32. A through hole is formed at the bottom position of the bearing table 27 corresponding to the fixing seat 31 to form a pressing and fixing through hole 272. A return spring 33 is sleeved on the pressing shaft 36, and the pressing shaft 36 can be movably inserted into the pressing and fixing through hole 272. The fixing seat 31 is fixed on the bearing table 27 by bolts. The return spring 33 is a cylindrical helical spring, and its elastic coefficient is selected according to actual requirements. A pressing and fixing block 34 is fixedly installed at the top of the pressing shaft 36. The pressing and fixing block 34 extends out of the activity slot 32 towards the direction of the receiving chute 271. A pressing and fixing notch 35 for tightly pressing and fixing the stamping base 264 is formed on the pressing and fixing block 34. Bevel surfaces are formed on two opposite surfaces of the connecting handle 261 to form positioning bevel surfaces 262. A bevel surface is formed at the bottom of the pressing shaft 36 to form a pressing and fixing bevel surface 37. The pressing and fixing bevel surface 37 and the positioning bevel surface 262 face each other. The designs of the positioning bevel surface 262 and the pressing and fixing bevel surface 37 enable the stamping base 264 to be better positioned and guided during the installation process, and at the same time, greater friction can be provided when the pressing shaft 36 presses down, further strengthening the fixing effect on the stamping base 264. The cooperation of the positioning bevel surface 262 and the pressing and fixing bevel surface 37 improves the positioning accuracy and fixing strength of the installation of the stamping base 264.

[0035] The present application also provides a metal shell stamping and forming process, including the following steps: S1. Replace the base, control the rotation of the rotating seat 26, rotate the stamping base 264 for stamping through holes to the lower part of the stamping top block 15, and then sequentially push the stamping base 264 along the moving chute 266 and the bearing chute to the bearing table 27. Controlling the rotation of the rotating seat 26 can be achieved by operating the control button of the motor 22. The stamping base 264 is manually pushed. When it is pushed to the end of the receiving chute 271, it means that the stamping base 264 is completed in positioning. At this time, the stamping base 264 is directly below the stamping top block 15.

[0036] S2. Sheet forming, place the sheet to be processed on the stamping base 264, start the stamping driving mechanism to stamp the sheet, and the sheet is stamped to form a plurality of through holes, and several base sheets are formed based on the through holes. The start of the stamping driving mechanism is achieved by pressing the switch on the stamping table 21.

[0037] S3. Bending, repeat the step S1 to replace the stamping base 264, place the base sheet on the new stamping base 264 for bending after replacement, and start the stamping driving mechanism to process the base sheet to form a bent sheet.

[0038] S4. Punching, repeat the step S1 to replace the stamping base 264, place the bent sheet on the new stamping base 264 for punching after replacement, and start the stamping driving mechanism to punch the bent sheet to form a formed workpiece.

[0039] The implementation principle of the embodiment of the present application is as follows: the setting of the base replacement device provides a plurality of base mounting platforms 263. When processing the plate, the stamping base 264 to be used is installed on the base mounting platform 263 in advance to ensure that the stamping base 264 can move along the moving slide 266. By controlling the motor 22 to drive the rotating shaft 24 to rotate, the required stamping base 264 is rotated to align with the position of the receiving slide 271 on the bearing platform 27, and the stamping base 264 is manually pushed to the end of the receiving slide 271, so that the stamping base 264 can be positioned so that the stamping base 264 is located directly below the stamping top block 15.

[0040] Start the electric sliding platform 13, which drives the mounting plate 14 and the stamping hydraulic cylinder 11 to move downward synchronously, so that the pressure switch 16 at the bottom of the mounting plate 14 contacts the top of the pressing block 34. As the electric sliding platform 13 moves downward, the pressure switch 16 presses the pressing block 34 downward to move the pressing shaft 36 into the pressing through hole 272. At this time, the reset spring 33 is compressed until the pressing inclined surface 37 provided on the pressing shaft 36 contacts the positioning inclined surface 262 provided on the connecting handle 261. Since the pressing inclined surfaces 37 provided on both sides contact the positioning inclined surfaces 262 on both sides of the connecting handle 261 respectively, as the electric sliding platform 13 continues to move downward to apply pressure, the connecting handle 261 will be centered first and then pressed and fixed under the downward pressure. In this process, the stamping base 264 is pressed and fixed by the pressing notch 35 provided on the pressing block 34. At this time, the rotating seat 26 cannot rotate, and the stamping base 264 is pressed and fixed and cannot move. When the downward pressure reaches a preset value, the pressure switch 16 controls the stamping hydraulic cylinder 11 to open, and the stamping hydraulic cylinder 11 drives the stamping top block 15 to perform stamping.

[0041] If the stamping base 264 needs to be replaced, the electric sliding platform 13 is controlled to move upward, the pressure value of the pressure switch 16 is reduced, and the stamping hydraulic cylinder 11 will return to its position and drive the stamping top block 15 to move upward. In this process, since the electric sliding platform 13 is controlled to move upward, the pressing shaft 36 will no longer press the connecting handle 261, and the pressing block 34 will no longer press the stamping base 264. The control motor 22 can drive the rotating seat 26 to rotate and replace the stamping base 264. After the replacement is completed, a new stamping process continues.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A metal shell stamping and forming device, comprising a base (20), a stamping table (21) and a machine shell (10) are arranged on the base (20), a switch is installed on the stamping table (21), and the characteristics are that, A stamping driving mechanism and a stamping assembly are provided on the casing (10). The stamping assembly includes a stamping top block (15), and the stamping driving mechanism includes a stamping hydraulic cylinder (11) for driving the stamping top block (15). A base replacement device is provided on the stamping table (21). The base replacement device includes a rotating seat (26). A plurality of connecting handles (261) are provided on the circumferential side of the rotating seat (26). A base mounting table (263) is provided at one end of each connecting handle (261) away from the rotating seat (26). A stamping base (264) for sheet metal forming is mounted on the base mounting table (263). The rotating seat (26) moves the stamping base (264) to below the stamping top block (15) by rotation.

2. A metal shell stamping and forming device according to claim 1, characterized in that: A moving chute (266) is provided on the base mounting table (263), and a slider (265) slidably mounted with the moving chute (266) is provided on the stamping base (264). The height of the base mounting table (263) is higher than the heights of the connecting handle (261) and the rotating seat (26), and a containing groove (28) is formed. A bearing table (27) is provided in the containing groove (28). A receiving chute (271) is provided on the bearing table (27). The opening height of the receiving chute (271) is the same as the height of the moving chute (266). The stamping base (264) can slide from the moving chute (266) to the receiving chute (271).

3. A metal shell stamping and forming device according to claim 2, characterized in that: The bearing table (27) is circular, and an arc surface matching the shape of the bearing table (27) is provided on one side of the base mounting table (263) facing the bearing table (27).

4. A metal shell stamping and forming device according to claim 2, characterized in that: A fixing component is provided on the bearing table (27). The fixing component includes fixing seats (31) mounted on both sides of the receiving chute (271). An activity groove (32) is provided in the fixing seat (31). A pressing shaft (36) is provided in the activity groove (32). A through hole is provided at the bottom position of the bearing table (27) corresponding to the fixing seat (31) to form a pressing through hole (272). A return spring (33) is sleeved on the pressing shaft (36), and the pressing shaft (36) can be movably inserted into the pressing through hole (272).

5. A metal shell stamping and forming device according to claim 4, characterized in that: A pressing block (34) is fixedly mounted on the top of the pressing shaft (36). The pressing block (34) extends out of the activity groove (32) in the direction facing the receiving chute (271). A pressing notch (35) for tightly fixing the stamping base (264) is provided on the pressing block (34).

6. A metal shell stamping and forming device according to claim 4, characterized in that: Positioning inclined surfaces (262) are formed by providing inclined surfaces on two opposite surfaces of the connecting handle (261), and a pressing inclined surface (37) is formed by providing an inclined surface at the bottom of the pressing shaft (36). The pressing inclined surface (37) and the positioning inclined surface (262) are arranged facing each other.

7. A metal shell stamping and forming device according to claim 1, characterized in that: The stamping assembly further includes a mounting plate (14), and the output shaft of the stamping hydraulic cylinder (11) is inserted into one end of the mounting plate (14) away from the stamping hydraulic cylinder (11). The stamping drive mechanism further includes an electric sliding platform (13). A slide rail (12) for the movement of the electric sliding platform (13) is provided on the machine housing (10). The stamping hydraulic cylinder (11) and the mounting plate (14) are both mounted on the electric sliding platform (13).

8. A metal shell stamping and forming device according to claim 7, characterized in that: Two pressure switches (16) are mounted on one side of the mounting plate (14) facing the stamping table (21), and the pressure switches (16) are vertically aligned with the fixed seat (31).

9. A metal shell stamping and forming device according to claim 1, characterized in that: A rotating shaft (24) is connected to the bottom of the rotating seat (26), and a driven gear (25) is mounted on the rotating shaft (24). The base replacement device further includes a driving gear (23) meshing with the driven gear (25) and a motor (22) for driving the driving gear (23).

10. A stamping process for a metal shell, characterized in that, Using the stamping and forming equipment according to any one of claims 1-9, the following steps are included: S1. Replace the base. Control the rotation of the rotating seat (26) to rotate the stamping base (264) for punching through holes to below the stamping top block (15), and then push the stamping base (264) along the moving chute (266) and the bearing chute to the bearing table (27) in sequence. S2. Form into pieces. Place the workpiece to be processed on the stamping base (264), start the stamping drive mechanism to stamp the workpiece. The workpiece is stamped to form a plurality of through holes, and a plurality of base pieces are formed based on the through holes. S3. Bend. Repeat the step S1 to replace the stamping base (264), place the base piece on the new stamping base (264) for bending after replacement, start the stamping drive mechanism to process the base piece to form a bent piece. S4. Punch holes. Repeat the step S1 to replace the stamping base (264), place the bent piece on the new stamping base (264) for punching after replacement, start the stamping drive mechanism to punch the bent piece to form a formed workpiece.

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