Positioning and stamping device for gearbox shell production

Abstract

The utility model relates to the field of gear box shell machining, in particular to a positioning stamping device for gear box shell production. The technical problems that when a gearbox shell is stamped and punched, it is usually difficult to ensure that stamped parts have accurate sizes and shapes, inaccurate positioning may cause the quality problem in production, and the rejection rate is increased are solved. According to the technical scheme, the positioning and stamping device for gearbox shell production comprises a supporting assembly; the punching machine further comprises a waste collecting assembly, a gearbox assembly, a lifting positioning assembly, a punching assembly and a position detecting assembly. The lifting positioning assembly is extruded at the upper end of the gear box assembly to press down and fix the gear box assembly, and then the punching assembly is started to move along the inner wall of the lifting positioning assembly when descending in the vertical direction. The punching assembly is started to punch the periphery of the gearbox assembly while the punching assembly stably moves in the vertical direction, and the technical problem is solved.

Description

Technical Field

[0001] The utility model belongs to the field of gear box shell processing, and specifically relates to a positioning punching device for producing the gear box shell. Background Art

[0002] In the production process of gearbox, gearbox housing is a key component. Usually, the manufacturing of gearbox housing involves multiple processes, one of which is stamping. Stamping is a process of forming metal sheets through stamping dies to obtain parts of specific shapes and sizes. Punching is a common operation in the stamping process. It applies pressure on the metal plate and uses a die to cut or form holes in the material. These holes can be used to connect parts, ventilate, fix bolts or other purposes. When punching and punching the gearbox housing, the traditional stamping process usually finds it difficult to ensure that the stamped parts have precise size and shape. Inaccurate positioning may lead to quality problems in production and increase the scrap rate. Utility Model Content

[0003] In order to overcome the problem of punching holes in the gearbox housing, it is usually difficult to ensure that the stamped parts have accurate size and shape. Inaccurate positioning may lead to quality problems in production and increase the scrap rate.

[0004] The technical solution of the utility model is: a positioning and punching device for the production of gear box housings, comprising a support assembly; also comprising a waste collection assembly, a gear box assembly, a lifting and positioning assembly, a punching assembly and a position detection assembly; a waste collection assembly for collecting waste chips is movably arranged below the support assembly; a gear box assembly is movably arranged at the upper end of the support assembly; a lifting and positioning assembly for lifting and positioning is arranged at the upper end of the support assembly; a punching assembly for punching is arranged on the support assembly; a position detection assembly for determining the position is arranged at the lower end of the lifting and positioning assembly.

[0005] Preferably, the gear box assembly is first placed on the limiting structure on the supporting assembly to achieve stable placement of the gear box assembly, and then the lifting and positioning assembly is turned on to adjust the position of the lifting and positioning assembly, so that the lifting and positioning assembly moves downward and is limited by the supporting assembly. As the lifting and positioning assembly continues to move downward, the lifting and positioning assembly will be squeezed on the upper end of the gear box assembly to press the gear box assembly down and fix it. When the lifting and positioning assembly is pressed down on the gear box assembly, the position detection assembly will detect the pressure. At this time, the staff will know that the lifting and positioning assembly has been adjusted into place, and then the punching assembly is turned on to make the punching assembly move along the inner wall of the lifting and positioning assembly when it descends in the vertical direction, so that the punching assembly can be moved stably in the vertical direction and at the same time, the punching assembly is turned on to punch holes around the gear box assembly, and the waste chips formed by the punching fall into the waste collection assembly and are collected, thereby solving the problem that it is usually difficult to ensure that the stamped parts have precise size and shape when punching holes in the gear box housing, and inaccurate positioning may cause quality problems in production and increase the scrap rate.

[0006] Preferably, the support assembly includes a support plate, a support leg, a first limiting hole, a first limiting block, a first limiting column and a second limiting column; the front and rear ends of the support plate are fixedly connected with the support legs; the upper and lower ends of the support plate are penetrated with a plurality of first limiting holes; the upper end of the support plate is fixedly connected with the first limiting block; the upper end of the first limiting block is fixedly connected with the first limiting column and the second limiting column, and the first limiting block, the first limiting column and the second limiting column are all adapted to the gear box assembly, which can limit the gear box assembly, and facilitate the gear box assembly to be quickly and stably limited at the upper end of the support plate.

[0007] Preferably, the waste collection assembly includes a carrying plate and a waste box; a carrying plate is movably arranged below the support plate; a waste box is fixedly connected to the upper end of the carrying plate, and waste chips generated by punching will fall into the interior of the waste box through the first limiting hole, thereby facilitating the collection of the waste chips.

[0008] Preferably, the gear box assembly includes a gear box body, a positioning groove, a first limit ring, a second limit ring and a first groove body; the gear box body is movably arranged on the upper end of the support plate; a positioning groove is provided on the upper end of the gear box body; the first limit ring and the second limit ring are fixedly connected with the upper and lower ends of the gear box body in a through-type manner; a first groove body is provided at the lower end of the gear box body; the inner wall of the lower end of the gear box body and the outer wall of the first limit block are fitted; the outer wall of the first limit column and the inner wall of the first limit ring are fitted; the outer wall of the second limit column and the inner wall of the second limit ring are fitted; the inner wall of the first groove body and the outer wall of the first limit block are fitted, and the gear box body is placed on the upper end of the support plate so that the inner wall of the first groove body and the outer wall of the first limit block are fitted, and at the same time, the outer wall of the first limit column and the inner wall of the first limit ring are fitted, and the outer wall of the second limit column and the inner wall of the second limit ring are fitted, so that the gear box body can be stably placed.

[0009] Preferably, the lifting and positioning assembly includes a fixed frame, a first motor, a screw, a lifting block, a bearing, a second limit hole, a third limit hole and a fourth limit hole; the upper end of the support plate is fixedly connected to the fixed frame; the upper end of the fixed frame is fixedly connected to the first motor; the lower end of the output shaft of the first motor passes through the fixed frame and is fixedly connected to the screw; the inner wall of the lower end of the fixed frame is fixedly connected to the bearing; the inner wall of the bearing and the outer wall of the lower end of the screw are fitted; the outer wall of the screw is threadedly installed with a lifting block; the left and right ends of the lifting block are fitted with the left and right inner walls of the fixed frame; the second limit hole and the third limit hole are penetrated at the upper and lower ends of the lifting block; a plurality of third limit holes are penetrated at the upper and lower ends of the lifting block Four limiting holes; the inner wall of the fourth limiting hole and the inner wall of the first limiting hole are in the same plane; the inner wall of the second limiting hole and the outer wall of the first limiting column are in the same plane; the inner wall of the third limiting hole and the outer wall of the second limiting column are in the same plane, and the lower end of the lifting block is used to press down and fix the upper ends of the first limiting ring and the second limiting ring, and the first motor is turned on to drive the screw to rotate. Under the limiting effect of the fixed frame, the lifting block will move downward along the outer wall of the screw, and then the inner wall of the second limiting hole will fit with the outer wall of the first limiting column, and at the same time, the inner wall of the third limiting hole will fit with the outer wall of the second limiting column, so as to realize the stable movement of the lifting block in the vertical direction.

[0010] Preferably, the punching assembly includes a frame, a hydraulic cylinder, a lifting plate, a second motor and a drill rod; the left and right ends of the support plate are fixedly connected to the frame; the upper and lower ends of the frame are fixedly connected with the hydraulic cylinder in a through-type manner; the lower end of the telescopic rod of the hydraulic cylinder is fixedly connected to the lifting plate; the upper end of the lifting plate is fixedly connected to a plurality of second motors; the lower end of the output shaft of the second motor passes through the lifting plate and is fixedly connected to the drill rod; the outer wall of the drill rod is fitted with the inner wall of the fourth limit hole, and when it is necessary to drill a hole in the gear box, the hydraulic cylinder is turned on to move the lifting plate downward, and the second motor is turned on to rotate the drill rod, and the drill rod moves downward while rotating, so that a hole can be opened in the gear box.

[0011] Preferably, the position detection component includes a second limit block, a second groove body, a pressure sensor, a spring and a movable column; the lower end of the lifting block is fixedly connected to the second limit block; the lower end of the second limit block is provided with a second groove body; the upper end of the inner wall of the second groove body is fixedly connected to the pressure sensor and the spring; the lower end of the spring is fixedly connected to the movable column; the outer wall of the second limit block and the inner wall of the positioning groove are in the same plane. When in use, the lower end of the second limit block will approach the upper end of the gear case body, and finally, the lower end of the movable column will first contact the inner wall of the positioning groove. Then, as the lifting block continues to move downward, the movable column will be squeezed and move upward. At this time, the spring will be compressed, and then the upper end of the movable column will squeeze the pressure sensor. When the pressure sensor detects the squeezing force, the upper ends of the first limit ring and the second limit ring will both fit with the lower end of the lifting block, so that the downward position of the lifting block can be quickly determined, and the height of the lifting block can be quickly adjusted.

[0012] Beneficial effects of the utility model:

[0013] 1. The gearbox assembly is stably placed by placing it on the limiting structure on the supporting assembly, and then the lifting and positioning assembly is moved downward and limited by the supporting assembly. As the lifting and positioning assembly continues to move downward, the lifting and positioning assembly will squeeze the upper end of the gearbox assembly to press the gearbox assembly downward and fix it. When the lifting and positioning assembly is pressed down on the gearbox assembly, the position detection assembly will detect the pressure. At this time, the staff will know that the lifting and positioning assembly has been adjusted in place, and then the punching assembly is turned on to make the punching assembly move along the inner wall of the lifting and positioning assembly when it descends in the vertical direction. The punching assembly is turned on to punch holes around the gearbox assembly while the punching assembly is stably moved in the vertical direction. This solves the problem that it is usually difficult to ensure that the stamped parts have accurate size and shape when punching holes in the gearbox housing. Inaccurate positioning may cause quality problems in production and increase the scrap rate.

[0014] 2. The first limiting block, the first limiting column and the second limiting column are all configured to match the gear box assembly, so that the gear box assembly can be limited, and the gear box assembly can be quickly and stably limited at the upper end of the support plate. The gear box body is placed on the upper end of the support plate, so that the inner wall of the first groove body fits with the outer wall of the first limiting block, and the outer wall of the first limiting column fits with the inner wall of the first limiting ring, and the outer wall of the second limiting column fits with the inner wall of the second limiting ring, so that the gear box body can be stably placed;

[0015] 3. Use the lower end of the lifting block to press down and fix the upper ends of the first limiting ring and the second limiting ring, turn on the first motor to drive the screw to rotate, and under the limiting effect of the fixed frame, the lifting block will move downward along the outer wall of the screw, and then the inner wall of the second limiting hole will fit with the outer wall of the first limiting column, and at the same time, the inner wall of the third limiting hole will fit with the outer wall of the second limiting column, so that the lifting block can move stably in the vertical direction;

[0016] 4. By setting a pressure sensor, when in use, the lower end of the second limit block will approach the upper end of the gear box body, and finally, the lower end of the movable column will first contact the inner wall of the positioning groove. Then, as the lifting block continues to move downward, the movable column will be squeezed and move upward. At this time, the spring will be compressed, and then the upper end of the movable column will squeeze the pressure sensor. When the pressure sensor detects the squeezing force, the upper ends of the first limit ring and the second limit ring will both fit with the lower end of the lifting block, so that the downward position of the lifting block can be quickly determined, and the height of the lifting block can be quickly adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1What is shown is a three-dimensional structural schematic diagram of a positioning punching device for producing a gear box housing of the utility model;

[0018] Figure 2 The three-dimensional structure schematic diagram of the support assembly and the waste collection assembly of a positioning punching device for producing a gear box housing of the utility model is shown;

[0019] Figure 3 What is shown is a three-dimensional structural schematic diagram of a gearbox assembly of a positioning punching device for producing a gearbox housing of the utility model;

[0020] Figure 4 The three-dimensional structure schematic diagram of the lower end of the gear box body of a positioning punching device for producing a gear box housing of the utility model is shown;

[0021] Figure 5 The three-dimensional structure diagram of the lifting and positioning assembly and the punching assembly of the positioning and punching device for producing a gear box housing of the utility model is shown;

[0022] Figure 6 The three-dimensional structure schematic diagram of the lower end of the lifting block of the positioning punching device for producing the gear box housing of the utility model is shown;

[0023] Figure 7 What is shown is a three-dimensional structural schematic diagram of a position detection component of a positioning stamping device for producing a gear box housing according to the utility model.

[0024] The markings in the accompanying drawings are: 1-support assembly, 101-support plate, 102-support leg, 103-first limiting hole, 104-first limiting block, 105-first limiting column, 106-second limiting column, 2-waste collection assembly, 201-carrying plate, 202-waste box, 3-gear box assembly, 301-gear box body, 302-positioning groove, 303-first limiting ring, 304-second limiting ring, 305-first slot body, 4-lifting positioning assembly, 401- Fixed frame, 402-first motor, 403-screw, 404-lifting block, 405-bearing, 406-second limiting hole, 407-third limiting hole, 408-fourth limiting hole, 5-punching assembly, 501-frame, 502-hydraulic cylinder, 503-lifting plate, 504-second motor, 505-drill rod, 6-position detection assembly, 601-second limiting block, 602-second trough, 603-pressure sensor, 604-spring, 605-movable column. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] See also Figure 1The utility model provides an embodiment: a positioning and stamping device for the production of a gear box housing, comprising a support assembly 1; further comprising a waste collecting assembly 2, a gear box assembly 3, a lifting and positioning assembly 4, a punching assembly 5 and a position detection assembly 6; a waste collecting assembly 2 for collecting waste is movably arranged below the support assembly 1; a gear box assembly 3 is movably arranged on the upper end of the support assembly 1; a lifting and positioning assembly 4 for lifting and positioning is arranged on the upper end of the support assembly 1; a punching assembly 5 for punching is arranged on the support assembly 1; a position detection assembly 6 for determining the position is arranged at the lower end of the lifting and positioning assembly 4.

[0027] See also Figure 2 In this embodiment, the support assembly 1 includes a support plate 101, a support leg 102, a first limiting hole 103, a first limiting block 104, a first limiting column 105 and a second limiting column 106; the front and rear ends of the support plate 101 are fixedly connected with the support legs 102; the upper and lower ends of the support plate 101 are penetrated with a plurality of first limiting holes 103; the upper end of the support plate 101 is fixedly connected with the first limiting block 104; the upper end of the first limiting block 104 is fixedly connected with the first limiting column 105 and the second limiting column 106; the waste collection assembly 2 includes a carrying plate 201 and a waste box 202; the carrying plate 201 is movably arranged below the support plate 101; the upper end of the carrying plate 201 is fixedly connected with the waste box 202.

[0028] See also Figure 3 and 4 In this embodiment, the gear box assembly 3 includes a gear box body 301, a positioning groove 302, a first limiting ring 303, a second limiting ring 304 and a first groove body 305; the gear box body 301 is movably arranged on the upper end of the support plate 101; a positioning groove 302 is provided at the upper end of the gear box body 301; the first limiting ring 303 and the second limiting ring 304 are fixedly connected through the upper and lower ends of the gear box body 301; a first groove body 305 is provided at the lower end of the gear box body 301; the inner wall of the lower end of the gear box body 301 is fitted with the outer wall of the first limiting block 104; the outer wall of the first limiting column 105 is fitted with the inner wall of the first limiting ring 303; the outer wall of the second limiting column 106 is fitted with the inner wall of the second limiting ring 304; the inner wall of the first groove body 305 is fitted with the outer wall of the first limiting block 104.

[0029] See also Figure 5 and 6In this embodiment, the lifting and positioning assembly 4 includes a fixed frame 401, a first motor 402, a screw 403, a lifting block 404, a bearing 405, a second limiting hole 406, a third limiting hole 407 and a fourth limiting hole 408; the upper end of the support plate 101 is fixedly connected to the fixed frame 401; the upper end of the fixed frame 401 is fixedly connected to the first motor 402; the lower end of the output shaft of the first motor 402 passes through the fixed frame 401 and is fixedly connected to the screw 403; the inner wall of the lower end of the fixed frame 401 is fixedly connected to the bearing 405; the inner wall of the bearing 405 is in contact with the outer wall of the lower end of the screw 403; the outer wall of the screw 403 is threadedly installed with the lifting block 404; the left and right ends of the lifting block 404 are in contact with the inner walls of the left and right ends of the fixed frame 401; the upper and lower ends of the lifting block 404 are penetrated by the second limiting hole 406 and the third limiting hole 407; the upper and lower ends of the lifting block 404 are penetrated by A plurality of fourth limiting holes 408 are provided; the inner wall of the fourth limiting hole 408 and the inner wall of the first limiting hole 103 are in the same plane; the inner wall of the second limiting hole 406 and the outer wall of the first limiting column 105 are in the same plane; the inner wall of the third limiting hole 407 and the outer wall of the second limiting column 106 are in the same plane; the punching assembly 5 includes a frame 501, a hydraulic cylinder 502, a lifting plate 503, a second motor 504 and a drill rod 505; the left and right ends of the support plate 101 are fixedly connected to the frame 501; the upper and lower ends of the frame 501 are fixedly connected with the hydraulic cylinder 502 in a through-type manner; the lower end of the telescopic rod of the hydraulic cylinder 502 is fixedly connected with the lifting plate 503; the upper end of the lifting plate 503 is fixedly connected with a plurality of second motors 504; the lower end of the output shaft of the second motor 504 passes through the lifting plate 503 and is fixedly connected with the drill rod 505; the outer wall of the drill rod 505 fits with the inner wall of the fourth limiting hole 408.

[0030] See also Figure 7 In this embodiment, the position detection component 6 includes a second limit block 601, a second groove body 602, a pressure sensor 603, a spring 604 and a movable column 605; the lower end of the lifting block 404 is fixedly connected to the second limit block 601; the lower end of the second limit block 601 is provided with a second groove body 602; the upper end of the inner wall of the second groove body 602 is fixedly connected to the pressure sensor 603 and the spring 604; the lower end of the spring 604 is fixedly connected to the movable column 605; the outer wall of the second limit block 601 and the inner wall of the positioning groove 302 are in the same plane.

[0031] When working, the gear box body 301 is first placed on the upper end of the support plate 101, so that the inner wall of the first groove body 305 fits with the outer wall of the first limiting block 104, and the outer wall of the first limiting column 105 fits with the inner wall of the first limiting ring 303, and the outer wall of the second limiting column 106 fits with the inner wall of the second limiting ring 304;

[0032] Then, the first motor 402 is turned on to drive the screw rod 403 to rotate. Under the limiting effect of the fixed frame 401, the lifting block 404 will move downward along the outer wall of the screw rod 403, and then the inner wall of the second limiting hole 406 will fit with the outer wall of the first limiting column 105, and at the same time, the inner wall of the third limiting hole 407 will fit with the outer wall of the second limiting column 106, so as to realize the stable movement of the lifting block 404 in the vertical direction, and the lower end of the second limiting block 601 will approach the upper end of the gear box 301, and finally, the lower end of the movable column 605 will first contact the inner wall of the positioning groove 302, and then, as the lifting block 404 continues to move downward, the movable column 605 will be squeezed and moved upward, and the spring 604 will be compressed at this time, and then the upper end of the movable column 605 will squeeze the pressure sensor 603, and when the pressure sensor 603 detects the squeezing force, the upper ends of the first limiting ring 303 and the second limiting ring 304 will both fit with the lower end of the lifting block 404;

[0033] When it is necessary to drill a hole in the gear box 301, the hydraulic cylinder 502 is turned on to move the lifting plate 503 downward, and the second motor 504 is turned on to rotate the drill rod 505. The drill rod 505 moves downward while rotating, and a hole can be drilled in the gear box 301. The waste chips generated by punching will fall into the interior of the waste box 202 through the first limiting hole 103, which is convenient for collecting the waste chips.

[0034] Through the above steps, the gear box assembly 3 is first placed on the limiting structure on the support assembly 1 to achieve stable placement of the gear box assembly 3, and then the lifting and positioning assembly 4 is turned on to adjust the position of the lifting and positioning assembly 4, so that the lifting and positioning assembly 4 moves downward and is limited by the support assembly 1. As the lifting and positioning assembly 4 continues to move downward, the lifting and positioning assembly 4 will be squeezed on the upper end of the gear box assembly 3 to press the gear box assembly 3 down and fix it. When the lifting and positioning assembly 4 is pressed down on the gear box assembly 3, the position detection assembly 6 will detect the pressure. At this time, the staff will know that the lifting and positioning assembly 4 has been adjusted into place, and then the punching assembly 5 is turned on to make the punching assembly 5 move along the inner wall of the lifting and positioning assembly 4 when it descends in the vertical direction, so that the punching assembly 5 can be stably moved in the vertical direction and at the same time, the punching assembly 5 is turned on to punch the periphery of the gear box assembly 3, and the waste chips formed by the punching fall into the waste collection assembly 2 and are collected, thereby solving the problem that it is usually difficult to ensure that the stamped parts have accurate size and shape when punching holes in the gear box housing, and inaccurate positioning may cause quality problems in production and increase the scrap rate.

[0035] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A positioning punching device for producing a gear box housing, comprising a support assembly (1); characterized in that: The invention also comprises a waste collection component (2), a gear box component (3), a lifting and positioning component (4), a punching component (5) and a position detection component (6); a waste collection component (2) for collecting waste scraps is movably arranged below the support component (1); a gear box component (3) is movably arranged above the support component (1); a lifting and positioning component (4) for lifting and positioning is arranged above the support component (1); a punching component (5) for punching is arranged on the support component (1); and a position detection component (6) for determining the position is arranged below the lifting and positioning component (4).

2. A positioning punching device for producing a gear box housing according to claim 1, characterized in that: The support assembly (1) comprises a support plate (101), a support leg (102), a first limiting hole (103), a first limiting block (104), a first limiting column (105) and a second limiting column (106); the front and rear ends of the support plate (101) are fixedly connected to the support legs (102); the upper and lower ends of the support plate (101) are provided with a plurality of first limiting holes (103); the upper end of the support plate (101) is fixedly connected to the first limiting block (104); the upper end of the first limiting block (104) is fixedly connected to the first limiting column (105) and the second limiting column (106).

3. A positioning punching device for producing a gear box housing according to claim 2, characterized in that: The waste collection assembly (2) comprises a carrying plate (201) and a waste box (202); the carrying plate (201) is movably arranged below the support plate (101); and the waste box (202) is fixedly connected to the upper end of the carrying plate (201).

4. A positioning punching device for producing a gear box housing according to claim 3, characterized in that: The gear box assembly (3) comprises a gear box body (301), a positioning groove (302), a first limiting ring (303), a second limiting ring (304) and a first groove body (305); the gear box body (301) is movably arranged on the upper end of the support plate (101); the upper end of the gear box body (301) is provided with a positioning groove (302); the first limiting ring (303) and the second limiting ring are fixedly connected to the upper and lower ends of the gear box body (301) in a through-type manner. (304); a first groove (305) is provided at the lower end of the gear housing (301); the inner wall of the lower end of the gear housing (301) is fitted with the outer wall of the first limiting block (104); the outer wall of the first limiting column (105) is fitted with the inner wall of the first limiting ring (303); the outer wall of the second limiting column (106) is fitted with the inner wall of the second limiting ring (304); the inner wall of the first groove (305) is fitted with the outer wall of the first limiting block (104).

5. A positioning punching device for producing a gear box housing according to claim 4, characterized in that: The lifting and positioning assembly (4) comprises a fixed frame (401), a first motor (402), a screw (403), a lifting block (404), a bearing (405), a second limiting hole (406), a third limiting hole (407) and a fourth limiting hole (408); the upper end of the support plate (101) is fixedly connected to the fixed frame (401); the upper end of the fixed frame (401) is fixedly connected to the first motor (402); the lower end of the output shaft of the first motor (402) passes through the fixed frame (401) and is fixedly connected to the screw (403); the inner wall of the lower end of the fixed frame (401) is fixedly connected to the bearing (405); the inner wall of the bearing (405) and the outer wall of the lower end of the screw (403) are in contact with each other; A lifting block (404) is threadedly mounted on the outer wall of the rod (403); the left and right ends of the lifting block (404) are in contact with the left and right inner walls of the fixed frame (401); the upper and lower ends of the lifting block (404) are penetrated with a second limiting hole (406) and a third limiting hole (407); the upper and lower ends of the lifting block (404) are penetrated with a plurality of fourth limiting holes (408); the inner wall of the fourth limiting hole (408) and the inner wall of the first limiting hole (103) are in the same plane; the inner wall of the second limiting hole (406) and the outer wall of the first limiting column (105) are in the same plane; the inner wall of the third limiting hole (407) and the outer wall of the second limiting column (106) are in the same plane.

6. A positioning punching device for producing a gear box housing according to claim 5, characterized in that: The punching assembly (5) comprises a frame (501), a hydraulic cylinder (502), a lifting plate (503), a second motor (504) and a drill rod (505); the left and right ends of the support plate (101) are fixedly connected to the frame (501); the upper and lower ends of the frame (501) are fixedly connected to the hydraulic cylinder (502) in a through-type manner; the lower end of the telescopic rod of the hydraulic cylinder (502) is fixedly connected to the lifting plate (503); the upper end of the lifting plate (503) is fixedly connected to a plurality of second motors (504); the lower end of the output shaft of the second motor (504) passes through the lifting plate (503) and is fixedly connected to the drill rod (505); the outer wall of the drill rod (505) is in contact with the inner wall of the fourth limiting hole (408).

7. A positioning punching device for producing a gear box housing according to claim 6, characterized in that: The position detection assembly (6) comprises a second limit block (601), a second groove body (602), a pressure sensor (603), a spring (604) and a movable column (605); the lower end of the lifting block (404) is fixedly connected to the second limit block (601); the lower end of the second limit block (601) is provided with a second groove body (602); the upper end of the inner wall of the second groove body (602) is fixedly connected to the pressure sensor (603) and the spring (604); the lower end of the spring (604) is fixedly connected to the movable column (605); the outer wall of the second limit block (601) and the inner wall of the positioning groove (302) are in the same plane.

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