A double-layer four-station composite half-bridge tooling

Abstract

The present invention relates to the technical field of half-bridge processing equipment, and in particular to a double-layer four-station composite half-bridge tooling. The tooling includes a bottom plate, on which a side plate is installed, and on both sides of the side plate, a vertical station assembly and a horizontal station assembly are respectively arranged; there are two vertical station assemblies, and the two vertical station assemblies are both installed on the bottom plate, and each vertical station assembly includes a base, and a first positioning assembly is arranged around the base; the horizontal station assembly includes a pressure plate assembly, which is respectively connected to the side plate and the bottom plate on two adjacent sides and extends along the height direction of the side plate, and two second positioning assemblies are installed on the side plate and arranged at intervals along the height direction of the side plate, and the pressure plate assembly is provided with clamping positions corresponding to the two second positioning assemblies respectively. The present invention effectively solves the technical problem in the prior art that it is impossible to process multiple half-bridge workpieces at the same time, resulting in low production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of half-bridge processing equipment, and in particular to a double-layer four-station composite half-bridge tool. Background Art

[0002] The axle is an important part of the car. It is connected to the frame (or load-bearing body) through the suspension, and the wheels are installed at both ends. The main function of the axle is to bear the load of the car and maintain the normal driving of the car on the road. The semi-bridge of the car generally refers to the drive axle of the car. The function of the drive axle is to transmit the driving force from the engine to the drive wheels to achieve the purpose of reducing speed and increasing torque, while changing the direction of power transmission.

[0003] At present, most of the half-bridge processing tooling is a single-layer double-workbench structure, which includes a base with a number of matching bolt mounting holes on the base to connect to the horizontal workbench. The base is equipped with a tooling body, and the structural shape of the tooling body is designed according to the half-bridge processing posture requirements. After the main body plate is processed by computer numerical control, it is fixed and assembled on the base by welding and bolts. The tooling body is provided with support points and positioning points that match the shape of the half-bridge to determine the posture and coordinate position of the half-bridge in the machine tool. A pressure plate is also provided on the base. The top of the pressure plate is used to contact the half-bridge blank, a bolt hole is provided in the middle, and a positioning groove is provided at the tail. After the half-bridge blank is pre-installed in place, the positioning groove at the tail of the pressure plate clamps the pressure plate positioning point, and the top of the pressure plate presses the half-bridge blank. The pressure plate is tightened with the middle bolts and nuts, and the entire pressure plate fixes the blank together, and the half-bridge can be processed.

[0004] It can be seen that the above-mentioned half-bridge processing tooling can accurately realize the clamping and processing of the half-bridge blank, but it has few processing and clamping stations, and can only clamp and process one half-bridge workpiece at a time, and cannot process multiple half-bridge workpieces at the same time. The processing speed is slow, resulting in its overall low production efficiency, and the clamping steps are cumbersome. The loading and unloading and measurement of the half-bridge workpiece are time-consuming. In addition, when loading and unloading and measuring a half-bridge workpiece, the entire tooling and machine tool are idle, resulting in a long standby time of the tooling and machine tool, further reducing its work efficiency. Summary of the invention

[0005] The present invention provides a double-layer four-station composite half-bridge tooling to solve the technical problem in the prior art that a plurality of half-bridge workpieces cannot be processed simultaneously, resulting in low production efficiency.

[0006] In order to solve the above problems, the double-layer four-station composite half-bridge tooling provided by the present invention adopts the following technical solutions:

[0007] A double-layer four-station composite half-bridge tooling, comprising a base plate, and further comprising:

[0008] A side plate, which is mounted on the bottom plate, and has vertical station components and horizontal station components on both sides thereof;

[0009] There are two vertical station assemblies, both of which are mounted on the bottom plate to form two vertical processing positions, each of which includes a base, and a first positioning assembly is arranged around the base;

[0010] The transverse workstation assembly includes a pressure plate assembly whose two adjacent sides are respectively connected to the side upright plate and the bottom plate and extend along the height direction of the side upright plate, and two second positioning assemblies installed on the side upright plate and spaced apart along the height direction of the side upright plate. The pressure plate assembly is provided with clamping positions corresponding to the two second positioning assemblies respectively to form two transverse processing positions.

[0011] The beneficial effects of the double-layer four-station composite half-bridge tooling provided by the present invention are as follows: by installing two vertical station assemblies on the bottom plate, two vertical processing positions for clamping half-bridge workpieces are formed; by installing side plates on the bottom plate, and arranging a horizontal station assembly including a pressure plate assembly and a second positioning assembly, the bottom of the pressure plate assembly is connected to the bottom plate, and its side is connected to the side plate; two second positioning assemblies spaced apart along the height direction of the side plate are installed on the side plate, and clamping positions corresponding to the two second positioning assemblies are opened on the pressure plate assembly to form two horizontal processing positions, so that there are four processing positions on the base, and the four processing positions do not interfere with each other in the horizontal and vertical directions, so that four half-bridge workpieces can be processed uninterruptedly after one clamping is completed, thereby greatly improving the production efficiency of the tooling.

[0012] Through the above arrangement, the present invention effectively solves the technical problem in the prior art that a plurality of half-bridge workpieces cannot be processed simultaneously, resulting in low production efficiency.

[0013] Furthermore, the first positioning assembly includes a guide positioning block located at the center of the base, an anti-error limit block located at the periphery of the base, and a positioning pin installed in a positioning hole on the base.

[0014] Furthermore, the cross section of the anti-error limit block is an arc-shaped block protruding toward the base, and the base has a matching recess.

[0015] Beneficial effect: By setting an anti-mistake limit block with an arc-shaped cross-section protruding toward the base and opening a matching recess on the base, the operator can be assisted to quickly adjust the angle of the half-bridge flange when clamping the half-bridge workpiece. The half-bridge workpiece can be quickly and accurately installed in the target processing position in conjunction with the guide positioning block, greatly improving the clamping efficiency of the half-bridge workpiece.

[0016] Furthermore, the pressure plate assembly includes a pressure plate whose two adjacent sides are respectively connected to the side vertical plate and the bottom plate, and the pressure plate is provided with two clamping positions which are arranged at intervals up and down and open at the top, and a circumferential limit block is arranged on the inner periphery of the clamping position, and a rotation groove is provided on the pressure plate below the side of the clamping position away from the side vertical plate, and the pressure plate is provided with an installation groove above the clamping position, a horizontally extending cross bar is installed in the installation groove, a clamping assembly is rotatably installed in the rotation groove, and the top of the clamping assembly has a slot for the cross bar to pass through.

[0017] Beneficial effect: By rotating the bottom of the clamping assembly in a rotating groove located below the clamping position, when clamping the half-bridge workpiece, force is applied to the top of the clamping assembly to clamp the half-bridge workpiece. Compared with the existing force applied to the center of the pressure plate, the torque of the force is increased, so that the half-bridge workpiece can be clamped more labor-savingly and reliably.

[0018] Furthermore, the cross rod is a screw rod, and the clamping assembly includes a clamping plate rotatably installed in the rotating groove, the top of the clamping plate is provided with the notch, a clamping nut is screwed onto the screw rod at the end of the notch away from the mounting groove, a clamping groove is provided on the clamping plate toward the center of the clamping position, a clamping piece is installed in the clamping groove, and the clamping piece is used to rotate with the rotation of the clamping plate to clamp the half-bridge workpiece.

[0019] Furthermore, the second positioning assembly includes two vertical positioning assemblies installed on the side plate and corresponding to each other up and down, a clamping position for clamping the half-bridge workpiece is formed between the two vertical positioning assemblies, and a lateral positioning assembly is installed on the side of each vertical positioning assembly, and the lateral positioning assembly is rotatably installed on the side plate.

[0020] Beneficial effect: By setting up two vertical positioning components and installing a lateral positioning component next to each vertical positioning component, the upper and lower surfaces of the half-bridge workpiece can be positioned and clamped, as well as its sides, which greatly improves the reliability of positioning and clamping the half-bridge workpiece.

[0021] Furthermore, the vertical positioning assembly includes a clamping seat installed on the side plate, and a first clamping bolt extending up and down is screwed on the clamping seat.

[0022] Beneficial effect: By setting a clamping seat, installing a first clamping bolt in the clamping seat, and adjusting the screwing degree of the first clamping bolt in the clamping seat, the clamping and disassembly of the half-bridge workpiece can be realized, which is simple and quick.

[0023] Furthermore, the lateral positioning assembly includes a mounting base fixedly mounted on the side vertical plate, and a connecting rod extending toward the clamping position is rotatably mounted on one end of the mounting base away from the side vertical plate, and a threaded hole is formed on the end of the connecting rod away from the mounting base, and a second clamping bolt is screwed into the threaded hole.

[0024] Beneficial effect: by installing a mounting seat on the side plate, and rotating and installing a connecting rod on the mounting seat, a threaded hole is opened at the end of the connecting rod, and a second clamping bolt is screwed into the threaded hole. The position of the second clamping bolt relative to the half-bridge workpiece can be adjusted by rotating the connecting rod. Thereafter, the half-bridge workpiece can be clamped by adjusting the degree of screwing of the second clamping bolt into the threaded hole. The operation steps are simple and the clamping is reliable.

[0025] Furthermore, it also includes a horizontally arranged stiffening plate, which is connected to the side plate and the pressure plate to strengthen the connection between the side plate and the pressure plate.

[0026] Furthermore, eye bolts are installed on the top surface of the side plate.

[0027] The beneficial effects of the double-layer four-station composite half-bridge tooling provided by the present invention are: by installing side plates on the bottom plate, and respectively arranging vertical station components and horizontal station components on both sides of the side plates, so as to form two vertical processing positions and two horizontal processing positions that do not interfere with each other on the bottom plate, four half-bridge workpieces can be processed after one clamping is completed, and the production efficiency is high; by arranging an anti-mistake limit block with an arc-shaped cross-section protruding toward the base on the vertical processing position, and arranging a guide positioning block in the center of the base, the half-bridge flange can be clamped quickly and accurately through the cooperation of the anti-mistake limit block and the guide positioning block, thereby improving the clamping efficiency.

[0028] Through the above arrangement, the present invention effectively solves the technical problem in the prior art that a plurality of half-bridge workpieces cannot be processed simultaneously, resulting in low production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0030] Figure 1 This is a schematic diagram of the application structure of the double-layer four-station composite half-bridge tooling provided by the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the double-layer four-station composite half-bridge tooling provided by the present invention;

[0032] Figure 3 for Figure 2 A side view of the double-layer four-station composite half-bridge tooling shown;

[0033] Figure 4 for Figure 2 The front view of the double-layer four-station composite half-bridge tooling shown;

[0034] Figure 5 for Figure 2 A top view of the double-layer four-station composite half-bridge tooling is shown.

[0035] Description of reference numerals:

[0036] 1. Bottom plate; 2. Side plate; 3. Base; 4. Guide positioning block; 5. Anti-error limit block; 6. Positioning pin; 7. Pressure plate; 8. Circumferential limit block; 9. Rotation groove; 10. Mounting groove; 11. Screw; 12. Pressure plate; 13. Notch; 14. Pressure nut; 15. Clamping seat; 16. First clamping bolt; 17. Mounting seat; 18. Connecting rod; 19. Second clamping bolt; 20. Stiffening plate; 21. Eye bolt; 22. Support bolt; 23. Half-bridge workpiece; 24. Pressure piece; 25. Clamping piece; 26. First pair of clamping plates; 27. First pair of clamping bolts; 28. First fixing bolt; 29. ​​Second pair of clamping plates; 30. Second fixing bolt; 31. Second pair of clamping bolts; 32. Threaded sleeve. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0038] It should be noted that the main concept of the double-layer four-station composite half-bridge tooling provided by the present invention is: by installing a side plate 2 on the base plate 1, and arranging two vertical station assemblies and a horizontal station assembly with two horizontal processing positions on both sides of the side plate 2, four non-interfering processing positions are formed on the base plate 1, so that uninterrupted processing of four half-bridge workpieces 23 can be achieved after one clamping is completed, thereby greatly improving the processing efficiency.

[0039] After introducing the basic principle of the present invention, various non-limiting embodiments of the present invention are described in detail below. The number of any element in the drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning.

[0040] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0041] Embodiment 1 of the double-layer four-station composite half-bridge tooling provided by the present invention:

[0042] like Figures 1 to 5As shown, the double-layer four-station composite half-bridge tooling includes a base plate 1, on which a side plate 2 is installed, and vertical station components and horizontal station components are respectively arranged on both sides of the side plate 2, wherein the vertical station component is installed on the base plate 1, and the horizontal station component is connected to the base plate 1 and the side plate 2.

[0043] The structural composition of the vertical station assembly is introduced below. There are two vertical station assemblies, both of which are installed on the bottom plate 1 and are arranged at intervals on the same side of the side plate 2 to form two vertical processing positions; the vertical station assembly includes a base 3, and a first positioning assembly is arranged on the peripheral side of the base 3.

[0044] About the first positioning component. The first positioning component includes a guide positioning block 4, an anti-error limit block 5 and a positioning pin 6, wherein the guide positioning block 4 is installed at the center of the base 3, the number of the anti-error limit blocks 5 is two, the two anti-error limit blocks 5 are both installed on the periphery of the base 3 and their cross-sections are arc-shaped protruding toward the base 3, the base 3 has a recess matching the anti-error limit block 5, the base 3 is provided with a positioning hole, and the positioning pin 6 is inserted in the positioning hole to fix the half-bridge workpiece 23 and the base 3.

[0045] Next, the structural composition of the transverse station assembly is introduced. The transverse station assembly includes a pressing plate assembly and a second positioning assembly, wherein the pressing plate assembly extends upward along the height direction of the side vertical plate 2 and its left side and bottom side are respectively connected to the side vertical plate 2 and the bottom plate 1, the number of the second positioning assemblies is two, the two second positioning assemblies are arranged at intervals along the height direction of the side vertical plate 2, and the pressing plate assembly is provided with pressing positions corresponding to the two second positioning assemblies respectively, so as to form two transverse processing positions.

[0046] About the pressure plate assembly. The pressure plate assembly includes a pressure plate 7, the left side and the bottom side of the pressure plate 7 are connected to the side plate 2 and the bottom plate 1 respectively, the pressure plate 7 is provided with two clamping positions which are arranged at intervals up and down and open at the top, the inner circumference of the clamping position is provided with a circumferential limit block 8, the pressure plate 7 is provided with a mounting groove 10 above the clamping position, a threaded sleeve 32 is installed in the mounting groove 10, a screw 11 extending horizontally outward is screwed in the threaded sleeve 32, the pressure plate 7 is provided with a rotating groove 9 at the bottom end on the right side of the clamping position, a pressure assembly is rotatably installed in the rotating groove 9, and the top of the pressure assembly has a notch 13 for the screw 11 to pass through.

[0047] Among them, the clamping assembly includes a clamping plate 12 rotatably installed in the rotating groove 9, a notch 13 is opened on the top of the clamping plate 12, and a clamping nut 14 is screwed on the right end of the screw 11; pin holes are opened on the front and rear sides of the rotating groove 9, and the bottom of the clamping plate 12 is also opened with corresponding pin holes, and the clamping plate 12 is rotatably connected to the rotating groove 9 through a pin shaft passing through the pin hole; a clamping groove facing the center of the clamping position is opened on the clamping plate 12, and a clamping piece 24 is installed in the clamping groove. When the clamping plate 12 rotates, it can drive the clamping piece 24 to rotate, thereby clamping the half-bridge workpiece 23.

[0048] About the second positioning assembly. The second positioning assembly includes two vertical positioning assemblies installed on the side plate 2 and corresponding to each other up and down, and a clamping position for clamping the half-bridge workpiece 23 is formed between the two vertical positioning assemblies. Two lateral positioning assemblies spaced apart up and down are installed on the left side of each vertical positioning assembly, and the lateral positioning assemblies are rotatably installed on the side plate 2.

[0049] Among them, the vertical positioning component includes a clamping seat 15 installed on the side plate 2, and a first clamping bolt 16 extending up and down is screwed on the clamping seat 15. The lateral mounting component includes a mounting seat 17 fixedly installed on the side plate 2. A connecting rod 18 extending toward the clamping position is rotatably mounted on the outer end of the mounting seat 17. A threaded hole is opened at the right end of the connecting rod 18, and a second clamping bolt 19 is screwed in the threaded hole. A clamping piece 25 corresponding to the position of the second clamping bolt 19 is installed on the side plate 2. The clamping piece 25 is used to cooperate with the second clamping bolt 19 to fix the side of the half-bridge workpiece 23.

[0050] Specifically, pin holes are provided at the outer end of the mounting seat 17 and the left end of the connecting rod 18, and the mounting seat 17 and the connecting rod 18 are rotatably connected via a pin shaft inserted through the pin hole; a support bolt 22 extending horizontally outward is also provided on the side plate 2 between the mounting seat 17 and the second clamping bolt 19, and a slot hole for accommodating the support bolt 22 is provided on the connecting rod 18.

[0051] In addition, a first pair of clamping assemblies and a second pair of clamping assemblies are respectively arranged on both sides of the clamping plate 12 on the pressure plate 7 to assist in clamping the half-bridge workpiece 23, wherein the first pair of clamping assemblies include a first pair of clamping plates 26, and the upper and lower ends of the first pair of clamping plates 26 are respectively provided with threaded holes for installing the first pair of clamping bolts 27 and mounting holes for installing the first fixing bolts 28, and the second pair of clamping assemblies include a second pair of clamping plates 29, and the second pair of clamping plates 29 are provided with vertically extending slots for the second fixing bolts 30 to pass through, and the second pair of clamping plates 29 are provided with threaded holes above the slots for the second pair of clamping bolts 31 to pass through; a stiffening plate 20 connected to the side plate 2 and the pressure plate 7 and extending horizontally is also arranged between the side plate 2 and the pressure plate 7, and the number of the stiffening plates 20 is two, and the two stiffening plates 20 are arranged at intervals up and down to strengthen the reliability of the connection between the side plate 2 and the pressure plate 7; a lifting eye bolt 21 is installed on the top surface of the side plate 2.

[0052] The working principle of the double-layer four-station composite half-bridge tooling provided by the present invention is:

[0053] Before the start of processing, install the half-bridge workpiece 23 on the vertical processing position and the horizontal processing position. When installing the half-bridge workpiece 23 on the vertical processing position, first make the center of the flange in the half-bridge workpiece 23 correspond to the guide positioning block 4, and make the groove on the flange correspond to the anti-error limit block 5. At the same time, make the positioning pin hole on the end face of the flange correspond to the position of the positioning hole on the base 3. Then, insert the positioning pin 6 into the positioning pin hole on the end face of the flange, and the half-bridge workpiece 23 can be quickly and accurately installed on the vertical processing position; when installing the half-bridge workpiece 23 on the horizontal processing position, first install one end of the half-bridge workpiece 23 in the clamping position, and the other end is located in the area formed by the two vertical positioning components. Then, rotate the clamping nut 14 to move it toward the side plate 2 to drive the upper end of the pressure plate 7 to move toward the side plate The plate 2 moves, thereby driving the clamping piece 24 to clamp the half-bridge workpiece 23, adjusting the degree of screwing of the first pair of clamping bolts 27 and the second pair of clamping bolts 31 in the threaded holes to clamp the portion of the half-bridge workpiece 23 between the two pair of clamping bolts, adjusting the degree of screwing of the first clamping bolt 16 in the clamping seat 15 to move the two first clamping bolts 16 toward each other to fix the half-bridge workpiece 23 in the vertical direction, rotating the connecting rod 18 to adjust the position of the second clamping bolt 19 relative to the half-bridge workpiece 23, after the adjustment is completed, adjusting the degree of screwing of the second clamping bolt 19 in the threaded hole opened on the connecting rod 18 to make the second clamping bolt 19 press against the half-bridge workpiece 23, and then the half-bridge workpiece 23 can be installed in the horizontal processing position, and after the installation of the half-bridge workpiece 23 is completed, it can be processed.

[0054] Embodiment 2 of the double-layer four-station composite half-bridge tooling provided by the present invention:

[0055] The main difference between it and Example 1 is:

[0056] In Example 1, two lateral positioning components spaced apart from each other are installed on the left side of each vertical positioning component.

[0057] In this embodiment, a lateral positioning assembly is installed on the left side of each vertical positioning assembly.

[0058] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and the like, which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0059] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A double-layer four-station composite half-bridge tooling, including a bottom plate, characterized in that: Also includes: A side plate, which is mounted on the bottom plate, and has vertical station components and horizontal station components on both sides thereof; There are two vertical station assemblies, both of which are mounted on the bottom plate to form two vertical processing positions, each of which includes a base, and a first positioning assembly is arranged around the base; A transverse workstation assembly, comprising a pressing plate assembly whose two adjacent sides are respectively connected to the side stand and the bottom plate and extend along the height direction of the side stand, and two second positioning assemblies installed on the side stand and spaced apart along the height direction of the side stand, the pressing plate assembly is provided with pressing positions corresponding to the two second positioning assemblies respectively, so as to form two transverse processing positions; The pressing plate assembly comprises a pressing plate whose two adjacent sides are respectively connected to the side vertical plate and the bottom plate, the pressing plate is provided with two pressing positions which are arranged at intervals up and down and are open at the top, the inner circumference of the pressing position is provided with a circumferential limit block, the pressing plate is provided with a rotation groove below the pressing position on the side away from the side vertical plate, the pressing plate is provided with an installation groove above the pressing position, a horizontally extending cross bar is installed in the installation groove, a pressing assembly is rotatably installed in the rotation groove, and the top of the pressing assembly is provided with a notch for the cross bar to pass through; The second positioning assembly includes two vertical positioning assemblies mounted on the side vertical plate and corresponding to each other, a clamping position for clamping the half-bridge workpiece is formed between the two vertical positioning assemblies, and a lateral positioning assembly is mounted on the side of each vertical positioning assembly, and the lateral positioning assembly is rotatably mounted on the side vertical plate; The cross bar is a screw rod, and the clamping assembly includes a clamping plate rotatably installed in the rotating groove, the top of the clamping plate is provided with the notch, a clamping nut is screwed on the end of the screw rod at the notch away from the mounting groove, a clamping groove facing the center of the clamping position is provided on the clamping plate, a clamping piece is installed in the clamping groove, and the clamping piece is used to rotate with the rotation of the clamping plate to clamp the half-bridge workpiece; The vertical positioning assembly comprises a clamping seat mounted on the side plate, and a first clamping bolt extending up and down is screwed onto the clamping seat; The lateral positioning assembly includes a mounting seat fixedly mounted on the side vertical plate, and a connecting rod extending toward the clamping position is rotatably mounted on one end of the mounting seat away from the side vertical plate, and a threaded hole is formed on the end of the connecting rod away from the mounting seat, and a second clamping bolt is screwed into the threaded hole.

2. The double-layer four-station composite half-bridge tooling according to claim 1 is characterized in that: The first positioning assembly includes a guide positioning block located at the center of the base, an anti-error limit block located at the peripheral side of the base, and a positioning pin installed in a positioning hole on the base.

3. The double-layer four-station composite half-bridge tooling according to claim 2 is characterized in that: The cross section of the error-proof limit block is an arc shape protruding toward the base, and the base is provided with a notch matching with the base.

4. The double-layer four-station composite half-bridge tooling according to any one of claims 1 to 3, characterized in that: It also includes a horizontally arranged stiffening plate, which is connected to the side plates and the pressure plate to strengthen the connection between the side plates and the pressure plate.

5. The double-layer four-station composite half-bridge tooling according to any one of claims 1 to 3, characterized in that: Eyebolts are installed on the top surface of the side stand.

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