Server Chassis Stamping Die and Its Usage Method

Abstract

The present application discloses a stamping die for a server chassis and its usage method, which relates to the technical field of stamping dies. The present application includes: a workbench, a mounting frame is connected to the bottom of the workbench, a lifting cylinder is fixedly connected to the mounting frame, a column is installed on the top of the workbench, and a moving plate is slidably sleeved on the column; a lower die, including two sub-templates connected to the workbench, an installation plate is connected to the lifting cylinder, and a settling block is connected to the installation plate and penetrates through the workbench and is inserted between the two sub-templates; an upper die, including a bearing plate connected to the bottom of the moving plate. By setting the lower die as two sub-templates and a settling block, and setting a bending pressing frame and a pressing cutting block on the upper die, the cooperation can complete the three processes of blanking, cold forging, and bending with a single device, without the need to transfer and replace the device, saving transportation costs and time, and improving the overall processing efficiency.

Description

Technical Field

[0001] This application relates to the technical field of stamping dies, and particularly to a stamping die for a server chassis and its usage method. Background Art

[0002] A server chassis is the physical enclosure of server hardware, which provides functions such as protection, support, and heat dissipation for the components inside the server.

[0003] The outer shell of a server chassis is usually assembled from multiple sheet metal parts. The main outer shell is U-shaped and is constructed with heat dissipation holes. When the main outer shell is formed, first, a punching device is used to punch holes in a metal flat plate, and then a stamping die is used to perform a cold pressing operation on the punched sheet metal part to form concave holes for heat dissipation on its surface. Finally, a bending die is used to extrude and bend the sheet metal part. At least three processing steps are required to process the metal plate into an assembled outer shell of the server.

[0004] Existing stamping dies are mostly single-process dies. To form a chassis shell, it is necessary to go through multiple processing transfer devices during the process, thus wasting a lot of time and manpower and reducing the overall forming efficiency.

[0005] Therefore, the present invention proposes a stamping die for a server chassis and its usage method. Summary of the Invention

[0006] The purpose of this application is to provide a stamping die for a server chassis and its usage method to solve the problems in the above background art.

[0007] To achieve the above purpose, this application specifically adopts the following technical solutions:

[0008] A stamping die for a server chassis, comprising:

[0009] A workbench, the bottom of the workbench is connected with a mounting frame, a lifting cylinder is fixedly connected to the mounting frame, a column is installed on the top of the workbench, and a moving plate is slidably sleeved on the column;

[0010] A lower die, including two sub-templates connected to the workbench, an installation plate is connected to the lifting cylinder, and a settling block is connected to the installation plate and penetrates through the workbench and is inserted between the two sub-templates;

[0011] An upper die, including a bearing plate connected to the bottom of the moving plate, a pressing plate is slidably connected to the bottom of the bearing plate through a spring rod, and a plurality of pressing blocks penetrating through the pressing plate are connected to the bottom of the bearing plate;

[0012] A bending and pressing frame, which is in an n shape and sequentially penetrates through the moving plate, the bearing plate, and the pressing plate, and the bending and pressing frame is arranged opposite to the settling block up and down.

[0013] Further, the number of the columns is three and they are respectively arranged at three corners of the workbench, and three guide sleeves sleeved with the columns are penetratively installed on the moving plate.

[0014] Further, a rectangular groove for placing sheet metal parts is horizontally formed on the upper surface of the sub-template, a plurality of vertical through grooves are arrayed in the rectangular groove, a V-shaped block is formed in the middle of the vertical through groove, and a plurality of jacking rods inserted into the vertical through grooves are connected to the mounting plate by bolts.

[0015] Further, the shape of the jacking rod is U-shaped and the upper end is wrapped on both sides of the V-shaped block. A blanking hole is formed between both sides of the jacking rod and the vertical through groove, and the top end of the jacking rod is flush with the bottom inside the rectangular groove.

[0016] Further, the pressing and cutting block includes a pressing block and a cutting blade block bolted to the bottom of the bearing plate. The bottom of the pressing block is V-shaped. A flat groove communicating with the rectangular groove is formed at the upper end of the settling block. A V-shaped groove opposite to the pressing block is formed in the flat groove. The cutting blade block is opposite to the vertical through groove up and down.

[0017] Further, the cutting blade block includes a U-shaped block. Two cutting plates for inserting into the blanking hole are formed at the bottom of the U-shaped block. A pressing block for abutting against the V-shaped block is formed between the two cutting plates.

[0018] Further, a convex plate for inserting and fitting with the rectangular groove and the flat groove is formed at the bottom of the pressing plate. The pressing and cutting blocks all slide through the convex plate. Four guide rods penetrating the moving plate are formed at the top of the pressing plate. The spring rod includes a vertical rod fixedly connected to the pressing plate. The upper end of the vertical rod slides through the bearing plate, and a support spring is connected between the bearing plate and the vertical rod.

[0019] Further, a switching driving member for driving the moving plate and the bending and pressing frame to move respectively is further included. The switching driving member includes two hydraulic push rods. One of the hydraulic push rods is connected to the moving plate, and the other hydraulic push rod is connected to the bending and pressing frame.

[0020] Further, the switching driving member further includes a first reset spring connected between the workbench and the moving plate. The first reset spring is sleeved on the three columns. A second reset spring is connected between the bending and pressing frame and the moving plate. A through hole for the hydraulic push rod to pass through is formed at the upper end of the bending and pressing frame. A cross plate for closing the through hole is horizontally and slidably inserted into the bending and pressing frame. An electric push rod for driving the cross plate to move horizontally is installed on the side of the bending and pressing frame.

[0021] The using method of the server chassis stamping die includes the following steps:

[0022] S1: Loading, place the sheet metal part into the rectangular grooves and flat grooves on the sub-template and the settling block;

[0023] S2: Blanking, push the moving plate downward through the hydraulic push rod, the pressing plate moves towards the sheet metal part, and it cooperates with the lower die to tightly clamp the sheet metal part. The moving plate continues to move downward, the spring rod between the bearing plate and the pressing plate contracts, the bearing plate moves downward relative to the pressing plate, and the cutting blade block in the pressing and cutting block first contacts the sheet metal part and cooperates with the blanking hole to form a stamping and cutting operation;

[0024] S3: Grooving, the bearing plate continues to move downward, the pressing block and the embossing block simultaneously contact the sheet metal part, and cooperate with the V-shaped groove and the V-shaped block to perform a grooving forming operation on the sheet metal part;

[0025] S4: Bending and forming, the hydraulic push rod drives the upper die to move upward as a whole, another hydraulic push rod drives the bending and pressing frame to move downward, and at the same time the jacking cylinder drives the settling block to move downward and form a groove between the two sub-templates. The bending and pressing frame will resist the sheet metal part to bend into the groove to complete the forming operation.

[0026] The beneficial effects of this application are as follows:

[0027] In this application, the lower die is set as two sub-templates and a settling block, and a bending and pressing frame is set on the upper die. When the pressing plate simultaneously contacts the two sub-templates and a settling block, a blanking operation can be performed using the pressing and cutting block, and then continue with the cold forging operation. Finally, use the bending and pressing frame to cooperate with the descent of the settling block to form a groove, and perform a bending and forming operation on the sheet metal material. All three operations are realized in this die, without the need to replace equipment, saving the cost and time of intermediate transfer and transportation, and improving the overall processing efficiency. Description of the Drawings

[0028] Figure 1 is the three-dimensional structure diagram of the first embodiment of this application;

[0029] Figure 2 is the three-dimensional structure diagram of the second embodiment of this application;

[0030] Figure 3 is this application Figure 1 in the three-dimensional structure semi-sectional view;

[0031] Figure 4 is the partial three-dimensional structure diagram of this application;

[0032] Figure 5 is the partial sectional view of the three-dimensional structure of the lower die of this application;

[0033] Figure 6 is the semi-sectional view of the three-dimensional structure of the upper die of this application;

[0034] Figure 7It is the three-dimensional structure diagram of the pressing block of the present application;

[0035] Figure 8 It is the present application Figure 7 Partial sectional view of the three-dimensional structure in the present application.

[0036] Reference numerals: 1, workbench; 101, mounting frame; 102, lifting cylinder; 103, column; 104, moving plate; 105, guide sleeve; 2, lower die; 201, sub-template; 2011, rectangular groove; 2012, vertical through groove; 2013, V-shaped block; 2014, lifting rod; 2015, blanking hole; 202, mounting plate; 203, settling block; 2031, flat groove; 2032, V-shaped groove; 3, upper die; 301, bearing plate; 302, spring rod; 3021, vertical rod; 3022, support spring; 303, pressing plate; 3031, convex plate; 3032, guide rod; 304, pressing block; 3041, pressing block; 3042, cutting block; 30421, U-shaped block; 30422, cutting plate; 30423, embossing block; 4, bending and pressing frame; 5, switching driving member; 501, first return spring; 502, second return spring; 503, perforation; 504, cross plate; 505, electric push rod. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Embodiment 1

[0038] As Figures 1-6 shown, a stamping die for a server chassis proposed in an embodiment of the present application includes:

[0039] A workbench 1, an installation frame 101 is connected to the bottom of the workbench 1, a lifting cylinder 102 is fixedly connected to the installation frame 101, columns 103 are installed on the top of the workbench 1, and a moving plate 104 is slidably sleeved on the columns 103;

[0040] A lower die 2, including two sub-templates 201 connected to the workbench 1, an installation plate 202 is connected to the lifting cylinder 102, and a settling block 203 penetrating the workbench 1 and inserted between the two sub-templates 201 is connected to the installation plate 202. The installation plate 202 is not only used to connect the settling block 203, but also can eject the processed sheet metal part from the sub-template 201 through the lifting of the lifting cylinder 102, facilitating the discharging operation and increasing convenience;

[0041] The upper die 3 includes a bearing plate 301 connected to the bottom of the moving plate 104. A pressing plate 303 is slidably connected to the bottom of the bearing plate 301 through a spring rod 302. A plurality of pressing and cutting blocks 304 penetrating the pressing plate 303 are connected to the bottom of the bearing plate 301. The spring rod 302 is arranged between the bearing plate 301 and the pressing plate 303 to separate the two. When the upper die 3 moves downward, the pressing plate 303 first contacts the sheet metal part, thereby extruding the sheet metal part for positioning. Then, the bearing plate 301 is further pushed downward, and the pressing and cutting blocks 304 are used to cut and cold press the sheet metal part. It should be noted that the pressing and cutting blocks 304 adopt a structure of a bottom cutter and an upper die. Two processing techniques can be carried out in a single stroke, without multiple strokes, saving the workpiece transfer time and cost, and improving the processing efficiency;

[0042] The bending and pressing frame 4 is in an n shape and sequentially penetrates the moving plate 104, the bearing plate 301, and the pressing plate 303. The bending and pressing frame 4 is arranged opposite to the settling block 203 up and down. The two ends of the bottom of the n-shaped bending and pressing frame 4 are arranged opposite to the edges of the settling block 203. When the bending and pressing frame 4 moves downward, the settling block 203 will move downward synchronously and form a groove between the two sub-templates 201. The downward movement of the bending and pressing frame 4 can resist the sheet metal part to enter the groove, thereby extruding the sheet metal part to form a U-shaped frame structure, realizing the bending forming process;

[0043] The overall device is composed of multiple modules. By using the two-stroke operations of the upper die 3 and the bending and pressing frame 4 and the two-stroke operations of the lower die 2, three processing techniques can be respectively realized. Compared with traditional stamping processing, the transfer process is saved, and no additional stamping equipment is required, improving the processing efficiency and saving labor and equipment costs.

[0044] As Figure 1 shown, in the first embodiment, the number of the columns 103 is three and they are respectively arranged at three corners of the workbench 1. Three guide sleeves 105 sleeved with the columns 103 are penetrated and installed on the moving plate 104. It should be noted that the columns 103, as the main guiding components of the device, are arranged outside the lower die 2 and the upper die 3, used to guide the moving plate 104 and the workbench 1, so that the moving plate 104 is always vertically oriented towards the workbench 1 during movement, ensuring the processing accuracy. At the same time, only three columns 103 are set, and an opening can be formed between them, facilitating the installation of the lower die 2 and the upper die 3 and increasing the convenience.

[0045] As Figure 5As shown, in the first embodiment, a rectangular groove 2011 for accommodating a sheet metal part is horizontally constructed on the upper surface of the split template 201, a plurality of vertical through grooves 2012 are arrayed in the rectangular groove 2011, a V-shaped block 2013 is constructed in the middle of the vertical through groove 2012, a plurality of lifting rods 2014 inserted in the vertical through groove 2012 are connected to the mounting plate 202 by bolts, the rectangular groove 2011 is mainly used for initial positioning of the sheet metal part, and the V-shaped block 2013 is suspended in the vertical through groove 2012. A cold forging groove can be formed between the top of the vertical through groove 2012. It should be noted that the lifting rod 2014 does not block the vertical through groove 2012. When the pressing block 304 punches the sheet metal, the material on the sheet metal can still enter the vertical through groove 2012 for blanking. Subsequent downward pressure can also be combined with the cold forging groove for extrusion molding operation, and air holes and heat dissipation grooves can be formed on the sheet metal. Both processes can be carried out on a single stamping equipment, saving equipment costs, eliminating the need to transfer workpieces, and improving processing efficiency.

[0046] like Figure 5 As shown, in the first embodiment, the lifting rod 2014 is U-shaped and the upper end is wrapped around the two sides of the V-shaped block 2013. A blanking hole 2015 is constructed between the two sides of the lifting rod 2014 and the vertical through groove 2012. The top of the lifting rod 2014 is flush with the bottom of the rectangular groove 2011. It should be noted that the bottom end of the pressure cutting block 304 is a cutting knife end, which can cooperate with the blanking hole 2015 to facilitate the blanking operation of the sheet metal part, wherein the top of the lifting rod 2014 can be used as the blanking hole 201 5 The support of the edge provides a cutting support point for the punching operation, which facilitates the smooth progress of the punching. The subsequent pressing and cutting block 304 continues to move downward, which can make the lifting rod 2014 move downward synchronously, so as to expose the V-shaped block 2013 and cooperate with the pressing and cutting block 304, thereby squeezing the sheet metal part to deform smoothly and form a heat dissipation groove. When the lifting rod 2014 rises and resets again, it can resist the deformed part of the sheet metal part and move upward synchronously, so as to eject the sheet metal part as a whole out of the rectangular groove 2011, and realize a convenient demoulding operation.

[0047] like Figures 6-7As shown, in the first embodiment, the pressing and cutting block 304 includes a pressing block 3041 and a cutting block 3042 that are bolted to the bottom of the bearing plate 301. The bottom of the pressing block 3041 is configured in a V shape. The upper end of the settling block 203 is configured with a flat groove 2031 that communicates with the rectangular groove 2011. A V-shaped groove 2032 that is arranged up and down opposite to the pressing block 3041 is configured in the flat groove 2031. The cutting block 3042 is arranged up and down opposite to the vertical through groove 2012. The communication between the flat groove 2031 and the rectangular groove 2011 can position the sheet metal part to ensure the accuracy of processing. The cutting block 3042 is used for plugging and matching with the blanking hole 2015 to realize the blanking process of the sheet metal part. The pressing block 3041 is used for extrusion matching with the V-shaped groove 2032 to realize the cold forging forming process of the sheet metal part. It should be noted that the height of the pressing block 3041 is the same as the structure of the cold forging part in the cutting block 3042. When the pressing and cutting block 304 moves downward, the first part to contact the sheet metal part is the cutting part of the cutting block 3042, and the subsequent parts to contact the sheet metal part are the cold forging part in the cutting block 3042 and the pressing block 3041. The two simultaneously perform the cold forging extrusion process.

[0048] As Figures 7-8 shown, in the first embodiment, the cutting block 3042 includes a U-shaped block 30421. Two cutting plates 30422 for plugging into the blanking hole 2015 are configured at the bottom of the U-shaped block 30421. A pressing block 30423 for abutting against the V-shaped block 2013 is configured between the two cutting plates 30422. It should be noted that dividing the cutting block 3042 into the cutting plates 30422 and the pressing block 30423 can perform two processing processes of blanking and cold forging forming in sequence when it moves downward and contacts the sheet metal part. Specifically, when the U-shaped block 30421 moves downward, the cutting plates 30422 first contact the sheet metal part in the rectangular groove 2011 and continue to press downward. The sheet metal part is supported by the edge of the blanking hole 2015 and can form a shear stress with the end of the cutting plate 30422, thereby cutting the sheet metal part and making the cut waste fall through the blanking hole 2015. After that, the lifting rod 2014 moves downward out of the range of the V-shaped block 2013 to completely expose it. At this time, the structure above the V-shaped block 2013 is the same as the structure of the V-shaped groove 2032. The pressing block 30423 continues to move downward and can cooperate with the V-shaped block 2013 to extrude the sheet metal part to form a heat dissipation groove, so as to realize the cold forging forming process. The upper die 3 can realize two processing processes in a single stroke, saving energy and improving the processing efficiency at the same time, and there is no need to re-align and position again in a single stroke, ensuring the processing accuracy.

[0049] As Figure 8As shown, in the first embodiment, a convex plate 3031 for inserting into the rectangular groove 2011 and the flat groove 2031 is constructed at the bottom of the pressing plate 303. The pressing blocks 304 all slide through the convex plate 3031. Four guide rods 3032 penetrating the moving plate 104 are constructed at the top of the pressing plate 303. The spring rod 302 includes a vertical rod 3021 fixedly connected to the pressing plate 303. The upper end of the vertical rod 3021 slides through the bearing plate 301. A support spring 3022 is connected between the bearing plate 301 and the vertical rod 3021. The convex plate 3031 can form an upper and lower clamping member with the rectangular groove 2011 and the flat groove 2031, which can accurately position and clamp the sheet metal part, prevent it from slipping, and ensure the subsequent processing accuracy. The setting of the support spring 3022 keeps a certain distance between the bearing plate 301 and the pressing plate 303 all the time, which can facilitate the reset operation of the pressing plate 303 relative to the bearing plate 301.

[0050] As Figure 1 shown, in the first embodiment, it further includes a switching drive member 5 for driving the moving plate 104 and the bending pressing frame 4 to move respectively. The switching drive member 5 includes two hydraulic push rods. One hydraulic push rod is connected to the moving plate 104, and the other hydraulic push rod is connected to the bending pressing frame 4. It should be noted that the above-mentioned hydraulic push rod is a hydraulic cylinder structure in the existing stamping equipment. In this embodiment, a double-hydraulic-cylinder stamping equipment is adopted. One hydraulic push rod's moving end is connected to the moving plate 104, and the other hydraulic push rod's moving end is connected to the bending pressing frame 4. Their movements do not interfere with each other. The second embodiment

[0051] As Figure 2As shown, in the second embodiment, the switching drive member 5 also includes a return spring 501 connected between the workbench 1 and the movable plate 104, the return spring 501 is sleeved on the three columns 103, and a return spring 2 502 is connected between the bending press frame 4 and the movable plate 104. The upper end of the bending press frame 4 is constructed with a through hole 503 for the hydraulic push rod to move through, and a horizontal plate 504 for closing the through hole 503 is inserted horizontally and slidably on the bending press frame 4. An electric push rod 505 for driving the horizontal movement of the horizontal plate 504 is installed on the side of the bending press frame 4. In this embodiment, the stamping equipment adopts a single hydraulic cylinder structure, and the moving end of the hydraulic push rod is not connected to any parts, and only moves through the through hole 503 of the bending press frame 4. When blanking and cold forging operations are required, the moving end of the hydraulic push rod passes through the bending press frame 4 and contacts the movable plate 104, thereby pushing the movable plate 104 to move downward as a whole. During the downward movement, the return spring 501 is stretched, and the blanking and cold forging extrusion is gradually completed. After the operation, the moving end of the hydraulic push rod moves up and passes through the perforation 503. At this time, the moving plate 104 automatically moves up and resets through the elastic force of the return spring 1 501, and the bending pressure frame 4 uses the electric push rod 505 to push the cross plate 504 to close the perforation 503. The moving end of the hydraulic push rod moves down again, which can resist the bending pressure frame 4 from moving down. It should be noted that the return spring 2 502 is only an isolation component between the bending pressure frame 4 and the moving plate 104, which is convenient for it to automatically reset away from the moving plate 104 when it is not under force. The elastic force of the return spring 2 502 is much smaller than the elastic force of the return spring 1 501. Therefore, when the bending pressure frame 4 moves, it will not drive the moving plate 104 to move too much. The bending pressure frame 4 can move alone and cooperate with the sinker 203 to perform extrusion and bending operations on the sheet metal parts, thereby realizing the bending and forming process of the sheet metal parts. The single-drive structure saves equipment costs while also increasing the linkage between structures, ensuring that the force points are in the same position, and increasing the forming accuracy of the workpiece.

[0052] like Figures 1-8 As shown, the method for using the server chassis stamping die proposed in the first embodiment of the present application specifically includes the following steps:

[0053] S1: Loading, placing the sheet metal parts into the rectangular groove 2011 and the flat groove 2031 on the sub-mould plate 201 and the sinker block 203;

[0054] S2: Punching: The hydraulic push rod pushes the movable plate 104 downward, and the pressing plate 303 moves toward the sheet metal part. The pressing plate 303 cooperates with the lower die 2 to tightly clamp the sheet metal part. The movable plate 104 continues to move downward, and the spring rod 302 between the bearing plate 301 and the pressing plate 303 contracts. The bearing plate 301 moves downward relative to the pressing plate 303. The cutting block 3042 in the cutting block 304 first contacts the sheet metal part and cooperates with the blanking hole 2015 to form a punching and shearing operation.

[0055] S3: Grooving. The carrier plate 301 continues to move downward. The pressing block 3041 and the embossing block 30423 simultaneously contact the sheet metal part, and cooperate with the V-shaped groove 2032 and the V-shaped block 2013 to perform a grooving forming operation on the sheet metal part;

[0056] S4: Bending and forming. The hydraulic push rod drives the upper die 3 to move upward as a whole, and another hydraulic push rod drives the bending pressure frame 4 to move downward. At the same time, the lifting cylinder 102 drives the settling block 203 to move downward and form a groove between the two sub-templates 201. The bending pressure frame 4 will resist the sheet metal part to bend into the groove to complete the forming operation.

[0057] As Figures 2-8 shown, the method for using the stamping die of the server chassis proposed in the second embodiment of the present application specifically includes the following steps:

[0058] S1: Loading. Place the sheet metal part into the rectangular groove 2011 and the flat groove 2031 on the sub-template 201 and the settling block 203;

[0059] S2: Blanking. The hydraulic push rod passes through the through hole 503 of the bending pressure frame 4 and abuts against the moving plate 104, pushing the moving plate 104 downward. The pressing plate 303 moves towards the sheet metal part, and it closely clamps the sheet metal part in cooperation with the lower die 2. The moving plate 104 continues to move downward. During this period, the first reset spring 501 extends and stores energy, and the spring rod 302 between the carrier plate 301 and the pressing plate 303 contracts. The carrier plate 301 moves downward relative to the pressing plate 303. The cutting knife block 3042 in the cutting block 304 first contacts the sheet metal part and cooperates with the blanking hole 2015 to form a stamping and cutting operation;

[0060] S3: Grooving. The carrier plate 301 continues to move downward. The pressing block 3041 and the embossing block 30423 simultaneously contact the sheet metal part, and cooperate with the V-shaped groove 2032 and the V-shaped block 2013 to perform a grooving forming operation on the sheet metal part. After completion, the hydraulic push rod resets, and the moving plate 104 loses the downward thrust and automatically resets through the elastic force of the first reset spring 501, while the carrier plate 301 automatically resets through the spring rod 302;

[0061] S4: Bending and forming. First, the electric push rod 505 is used to push the cross plate 504 to move and seal the through hole 503 of the bending pressure frame 4. When the hydraulic push rod moves downward, it will abut against the cross plate 504, thereby driving the bending pressure frame 4 to move downward alone. At the same time, the lifting cylinder 102 drives the settling block 203 to move downward and form a groove between the two sub-templates 201. The bending pressure frame 4 will resist the sheet metal part to bend into the groove to complete the forming operation. Subsequently, the workpiece is ejected by the upward movement of the lifting cylinder 102 and the lifting rod 2014 to complete the blanking operation.

[0062] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Method of using a stamping die for a server chassis, characterized in that, include: A workbench (1), wherein the bottom of the workbench (1) is connected to a mounting frame (101), a lifting cylinder (102) is fixedly connected to the mounting frame (101), a column (103) is installed on the top of the workbench (1), and a moving plate (104) is slidably sleeved on the column (103); The lower mold (2) comprises two sub-molds (201) connected to the workbench (1), the lifting cylinder (102) is connected to a mounting plate (202), and the mounting plate (202) is connected to a sinker (203) that passes through the workbench (1) and is inserted between the two sub-molds (201); The upper mold (3) comprises a bearing plate (301) connected to the bottom of the movable plate (104); the bottom of the bearing plate (301) is slidably connected to a pressing plate (303) via a spring rod (302); the bottom of the bearing plate (301) is connected to a plurality of pressing blocks (304) penetrating the pressing plate (303); The bending and pressing frame (4) is in an n-shape and sequentially penetrates the movable plate (104), the bearing plate (301) and the pressing plate (303), and the bending and pressing frame (4) and the sinker block (203) are arranged vertically opposite to each other; The upper surface of the split template (201) is horizontally configured with a rectangular groove (211) for accommodating sheet metal, the rectangular groove (2011) is configured with a plurality of vertical through grooves (212) in an array, a V-shaped block (213) is configured in the middle of the vertical through groove (2012), and the mounting plate (202) is connected to a plurality of lifting rods (2014) inserted in the vertical through grooves (2012) via bolts; The pressure cutting block (304) comprises a pressure holding block (3041) and a cutting block (3042) connected to the bottom of the bearing plate (301) by bolts, the bottom of the pressure holding block (3041) is V-shaped, the upper end of the sinker block (203) is provided with a flat groove (2031) connected to the rectangular groove (2011), the flat groove (2031) is provided with a V-shaped groove (2032) arranged vertically opposite to the pressure holding block (3041), and the cutting block (3042) is arranged vertically opposite to the vertical through groove (2012); The lifting rod (2014) is U-shaped and its upper end is wrapped around two sides of the V-shaped block (2013); blanking holes (2015) are constructed between the two sides of the lifting rod (2014) and the vertical through groove (2012); and the top of the lifting rod (2014) is flush with the bottom of the rectangular groove (2011); The cutting block (3042) comprises a U-shaped block (30421), the bottom of the U-shaped block (30421) is configured with two cutting plates (30422) for plugging into the blanking hole (2015), and a stamping block (30423) for contacting the V-shaped block (2013) is configured between the two cutting plates (30422); The bottom of the pressing plate (303) is configured with a convex plate (3031) for inserting and engaging with the rectangular groove (2011) and the flat groove (2031). The pressing blocks (304) all slide through the convex plate (3031). The top of the pressing plate (303) is configured with four guide rods (3032) passing through the moving plate (104). The spring rod (302) includes a vertical rod (3021) fixedly connected to the pressing plate (303). The upper end of the vertical rod (3021) slides through the bearing plate (301). A support spring (3022) is connected between the bearing plate (301) and the vertical rod (3021). It further includes a switching drive member (5) for driving the moving plate (104) and the bent pressing frame (4) to move respectively. The switching drive member (5) includes two hydraulic push rods. One of the hydraulic push rods is connected to the moving plate (104), and the other hydraulic push rod is connected to the bent pressing frame (4). The switching drive member (5) further includes a first return spring (501) connected between the workbench (1) and the moving plate (104). The first return spring (501) is sleeved on three columns (103). A second return spring (502) is connected between the bent pressing frame (4) and the moving plate (104). The upper end of the bent pressing frame (4) is configured with a through hole (503) for the hydraulic push rod to pass through. A horizontal plate (504) for closing the through hole (503) is horizontally slidably inserted on the bent pressing frame (4). An electric push rod (505) for driving the horizontal plate (504) to move horizontally is installed on the side of the bent pressing frame (4). The method includes the following steps: S1: Loading, putting the sheet metal part into the rectangular groove (2011) and the flat groove (2031) on the sub-template (201) and the settling block (203). S2: Blanking, the hydraulic push rod is used to push the moving plate (104) downward. The pressing plate (303) moves towards the sheet metal part and tightly clamps the sheet metal part in cooperation with the lower die (2). The moving plate (104) continues to move downward. The spring rod (302) between the bearing plate (301) and the pressing plate (303) contracts. The bearing plate (301) moves downward relative to the pressing plate (303). The cutting blade block (3042) in the pressing block (304) first contacts the sheet metal part and cooperates with the blanking hole (2015) to form a stamping and cutting operation. S3: Grooving, the bearing plate (301) continues to move downward. The pressing block (3041) and the embossing block (30423) contact the sheet metal part simultaneously, and cooperate with the V-shaped groove (2032) and the V-shaped block (2013) to perform a grooving forming operation on the sheet metal part. S4: Bending and forming, the hydraulic push rod drives the upper die (3) to move upward as a whole. The other hydraulic push rod drives the bent pressing frame (4) to move downward. At the same time, the lifting cylinder (102) drives the settling block (203) to move downward and form a groove between the two sub-templates (201). The bent pressing frame (4) will contact the sheet metal part and bend it into the groove to complete the forming operation.

2. The method for using a stamping die for a server chassis according to claim 1, wherein, The number of the upright columns (103) is three and they are respectively arranged at three corners of the workbench (1), and three guide sleeves (105) sleeved with the upright columns (103) are installed through the moving plate (104).

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