A punching fixture for ring-shaped parts

Abstract

This utility model relates to the field of ring-shaped part processing technology, and discloses a punching fixture for ring-shaped parts, including a load-bearing plate and a workpiece fixing mechanism on its top. The workpiece fixing mechanism includes a workpiece table, with an outer limiting ring and an inner fixing ring fixedly connected to the top of the workpiece table. A through hole is opened on the surface of the inner fixing ring, and a clamping rod is slidably connected inside the through hole. The other end of the clamping rod is fixedly connected to the inner limiting ring, and a telescopic spring is fixedly connected to one end of the clamping rod. A push rod is fixedly connected to the bottom of the clamping rod. This punching fixture for ring-shaped parts radially positions the outer ring of the workpiece through the outer limiting ring on the top of the workpiece table, without limiting the axial thickness of the workpiece. The clamping rod on the inner fixing ring, in conjunction with the telescopic spring, can elastically slide along the through hole, causing the inner limiting ring to adaptively clamp the inner ring of the workpiece. Regardless of the thickness of the ring-shaped part, the workpiece clamping can be quickly completed by adjusting the extension and retraction of the clamping rod with the push rod, without the need to change any fixture components, thus shortening the clamping adaptation time.

Description

Technical Field

[0001] This utility model belongs to the field of ring-shaped parts processing technology, specifically, it relates to a punching fixture for ring-shaped parts. Background Technology

[0002] In the field of ring-shaped parts machining, punching is a key process for achieving part forming or precision finishing. As the core component for fixing the workpiece during punching, the adaptability and stability of the fixture directly determine the machining efficiency and part quality. Currently, traditional fixtures used for punching ring-shaped parts in the industry generally adopt fixed-size clamping, that is, the fixture structure is customized for ring-shaped parts of a specific thickness, and the workpiece is fixed by bolt locking or rigid blocks.

[0003] Traditional fixtures have significant limitations in practical applications. When machining ring-shaped parts of varying thicknesses, the clamping clearance and limit height of the fixture cannot be flexibly adjusted. Operators must disassemble the original fixture and replace it with a special fixture adapted to the new part thickness. This replacement process not only consumes significant downtime but also requires recalibrating the coaxiality and parallelism of the fixture and the punching mechanism. Calibration errors can easily lead to problems such as end face tilting and inner diameter deviation in subsequent punched parts, increasing the scrap rate. Furthermore, companies need to stock multiple sets of fixtures for parts of different thicknesses, increasing equipment procurement costs and requiring additional storage space. Frequent disassembly and installation of fixtures accelerates component wear, shortens the overall lifespan of the fixtures, and further increases production and maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a punching fixture for ring-shaped parts to solve the problems mentioned in the background art.

[0005] A punching fixture for a ring-shaped part includes a punching machine and a processing table fixedly installed on the top of the punching machine. A load-bearing plate is fixedly connected to the bottom of the inner wall of the processing table, and a punching mechanism and a workpiece fixing mechanism are provided on the top of the load-bearing plate. The workpiece fixing mechanism includes a slide rail, a cylinder, a movable table, and a workpiece table. The slide rail and the cylinder are both fixedly installed on the top of the load-bearing plate. The movable table is connected to the top of the output end of the cylinder. The workpiece table is bolted to the top of the movable table. The top of the workpiece stage is fixedly connected to an outer limiting ring and an inner fixing ring. The surface of the inner fixing ring is provided with a through hole. A clamping rod is slidably connected inside the through hole. A movable sleeve is connected to the outer surface of one end of the clamping rod. The other end of the clamping rod is fixedly connected to the inner limiting ring. A telescopic spring is fixedly connected to one end of the clamping rod. A push rod is fixedly connected to the bottom of the clamping rod.

[0006] In a preferred embodiment of this utility model, the output end of the cylinder is fixedly connected to the bottom of the movable table through a fixing block. The surfaces of the movable table and the workpiece table are provided with multiple bolt holes, and the surface of the workpiece table is provided with an annular feeding hole.

[0007] In a preferred embodiment of this utility model, a rectangular waste hole is provided on the upper surface of the load-bearing plate, a feeding bin is fixedly connected to the bottom of the waste hole, a collection box is provided at the bottom of the feeding bin, and the bottom of the collection box is slidably connected to the inner wall of the punching machine through a guide rail.

[0008] In a preferred embodiment of this utility model, an electrical control box is fixedly installed at the bottom of the punching machine, and movable mounting rails are fixedly installed on the top left and right sides of the load-bearing plate. A position sensor is snapped into the top of the mounting rail, and the position sensor is electrically connected to the electrical control box through a PLC program.

[0009] In a preferred embodiment of the present invention, the bottom of the punching machine is equipped with a support base and casters, and the top of the support base is connected to the bottom of the punching machine via a telescopic rod.

[0010] In a preferred embodiment of this utility model, the punching mechanism includes a mounting plate, a punching cylinder, a limiting slide rail, a punching plate, and a punching ring. The mounting plate is fixedly connected to the inner wall of the processing table. The punching cylinder is fixedly installed at the top center of the mounting plate. The limiting slide rail is fixedly connected to the bottom of the mounting plate. The punching plate is slidably connected to the outer surface of the limiting slide rail. The top of the punching plate is connected to the output end of the punching cylinder. The punching ring is fixedly connected to the bottom of the punching plate.

[0011] In a preferred embodiment of this utility model, the electrical control box is electrically connected to the cylinder and the stamping cylinder via a PLC program.

[0012] Compared with the prior art, the present invention has the following advantages: 1. The punching fixture for this ring-shaped part uses an outer limiting ring on the top of the workpiece table to radially position the outer ring of the workpiece, without limiting the axial thickness of the workpiece. The clamping rod on the inner fixing ring, in conjunction with a telescopic spring, can elastically slide along the through hole, causing the inner limiting ring to adaptively clamp the inner ring of the workpiece. Regardless of the thickness of the ring-shaped part, the workpiece can be quickly clamped by simply adjusting the extension and retraction of the clamping rod with a push rod, without the need to change any fixture components, thus shortening the clamping adaptation time.

[0013] 2. The punching fixture for this ring-shaped part achieves rapid response of the punching action through the cooperation of the punching cylinder and the limiting slide rail of the punching mechanism. The waste material after punching falls directly into the collection box through the annular discharge hole of the workpiece table and the discharge bin, eliminating the need for manual waste cleaning and further saving process time.

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0015] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the processing table of this utility model; Figure 3 This is a schematic diagram of the top structure of the load-bearing plate of this utility model; Figure 4 This is a diagram showing the working state of the workpiece fixing mechanism of this utility model; Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a cross-sectional view of the clamping rod of this utility model; Figure 7 This is a schematic diagram of the punching mechanism of this utility model.

[0016] In the diagram: 1. Punching machine; 2. Processing table; 3. Mounting plate; 301. Punching cylinder; 302. Limiting slide rail; 303. Punching plate; 304. Punching ring; 4. Load-bearing plate; 401. Slide rail; 402. Cylinder; 403. Movable table; 404. Workpiece table; 405. Outer limiting ring; 406. Inner fixing ring; 407. Movable sleeve; 408. Clamping rod; 409. Push rod; 410. Telescopic spring; 411. Inner limiting ring; 5. Feeding bin; 6. Collection box; 7. Electrical control box; 8. Support base; 9. Casters; 10. Position sensor. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0018] Example 1 To address the problem that existing jigs used for punching ring-shaped parts are inconvenient for clamping ring-shaped parts of varying thicknesses, such as... Figures 1 to 7As shown, a punching fixture for a ring-shaped part includes a punching machine 1 and a processing table 2 fixedly installed on the top of the punching machine 1. A load-bearing plate 4 is fixedly connected to the bottom of the inner wall of the processing table 2. A punching mechanism and a workpiece fixing mechanism are provided on the top of the load-bearing plate 4. An electrical control box 7 is fixedly installed inside the punching machine 1. A support base 8 and casters 9 are installed at the bottom of the punching machine 1. The top of the support base 8 is connected to the bottom of the punching machine 1 through a telescopic rod. The electrical control box 7 is electrically connected to the cylinder 402 and the stamping cylinder 301 through a PLC program. A rectangular scrap hole is opened on the upper surface of the load-bearing plate 4.

[0019] The workpiece fixing mechanism includes a slide rail 401, a cylinder 402, a movable table 403, and a workpiece table 404. The slide rail 401 and cylinder 402 are both fixedly installed on the top of the load-bearing plate 4. The movable table 403 is connected to the top of the output end of the cylinder 402. The workpiece table 404 is bolted to the top of the movable table 403. The cylinder 402 is an MCGD-63×200 model. This model of cylinder has a built-in double guide rod structure, high guiding accuracy, and a linearity error of ≤0.02mm / m; the stroke is 200mm.

[0020] The top of the workpiece table 404 is fixedly connected to an outer limiting ring 405 and an inner fixing ring 406. The surface of the inner fixing ring 406 has a through hole, and a clamping rod 408 is slidably connected inside the through hole. A movable sleeve 407 is connected to the outer surface of one end of the clamping rod 408, and an inner limiting ring 411 is fixedly connected to the other end of the clamping rod 408. A telescopic spring 410 is fixedly connected to one end of the clamping rod 408, and a push rod 409 is fixedly connected to the bottom of the clamping rod 408. The output end of the cylinder 402 is fixedly connected to the bottom of the movable table 403 through a fixing block. Multiple bolt holes are opened on the surfaces of both the movable table 403 and the workpiece table 404. An annular unloading hole is opened on the surface of the workpiece table 404.

[0021] The punching mechanism includes a mounting plate 3, a punching cylinder 301, a limiting slide rail 302, a punching plate 303, and a punching ring 304. The mounting plate 3 is fixedly connected to the inner wall of the processing table 2. The punching cylinder 301 is fixedly installed at the top center of the mounting plate 3. The limiting slide rail 302 is fixedly connected to the bottom of the mounting plate 3. The punching plate 303 is slidably connected to the outer surface of the limiting slide rail 302. The top of the punching plate 303 is connected to the output end of the punching cylinder 301. The punching ring 304 is fixedly connected to the bottom of the punching plate 303. The punching cylinder 301 is of model MCQA-125×100. This model of cylinder has an output force of over 50kN, a cylinder diameter of 125mm, and a stroke of 100mm.

[0022] Pre-punching and debugging of ring-shaped parts: The processing table 2 is bolted to the top of the punching machine 1, ensuring a tight connection without any looseness. A load-bearing plate 4 is welded to the bottom of the inner wall of the processing table 2. The load-bearing plate 4 must be kept horizontal to ensure the stability of subsequent mechanism installation and operation. A support base 8 and casters 9 are installed at the bottom of the punching machine 1. The top of the support base 8 is connected to the bottom of the punching machine 1 via a telescopic rod. By adjusting the length of the telescopic rod, the support base 8 can be brought into contact with or detached from the ground. When the equipment needs to be moved, the telescopic rod is shortened to allow the casters 9 to touch the ground; when the equipment is in place, the telescopic rod is extended to allow the support base 8 to support the equipment, enhancing the equipment's stability. Simultaneously, an electrical control box 7 is fixedly installed inside the punching machine 1 for the electrical control of the equipment.

[0023] Weld and fix the mounting plate 3 to the inner wall of the processing table 2, ensuring the mounting plate 3 is horizontal. Secure the stamping cylinder 301 to the top center of the mounting plate 3 with bolts, ensuring the output end of the stamping cylinder 301 is vertically downward. Weld four limiting slide rails 302 to the bottom of the mounting plate 3, located at the four corners of the bottom of the mounting plate 3 and kept parallel to each other. Slidably connect the stamping plate 303 to the outer surface of the limiting slide rails 302, allowing the stamping plate 303 to slide smoothly up and down along the limiting slide rails 302. Finally, fix the punching ring 304 to the bottom of the stamping plate 303 with bolts, ensuring the center of the punching ring 304 coincides with the axis of the output end of the stamping cylinder 301.

[0024] Slide rail 401 and cylinder 402 are fixedly installed on the top of the load-bearing plate 4 with bolts. Two slide rails 401 are provided, which are distributed parallel to each other on both sides of cylinder 402. The bottom of the movable platform 403 is fixedly connected to the output end of cylinder 402 with a fixing block, and the bottom of the movable platform 403 is slidably engaged with slide rail 401 to ensure that the movable platform 403 can move smoothly along slide rail 401 under the drive of cylinder 402.

[0025] The workpiece stage 404 is bolted to the top of the movable stage 403. Both the movable stage 403 and the workpiece stage 404 have multiple bolt holes on their surfaces, allowing adjustment of the workpiece stage 404's position on the movable stage 403 according to the processing requirements of workpieces of different specifications. An outer limiting ring 405 and an inner fixing ring 406 are welded to the top of the workpiece stage 404. The outer limiting ring 405 restricts the outer ring position of the workpiece, and the inner fixing ring 406 has through holes evenly distributed around its circumference.

[0026] The inner fixing ring 406 has through holes evenly distributed along its circumference on its surface. The clamping rod 408 passes through these through holes and maintains a sliding fit with the inner wall of the through holes, allowing it to freely extend and retract along the axial direction of the through holes. There are two clamping rods 408. The movable sleeve 407 is fitted onto the end of the two clamping rods 408 near the inner side of the inner fixing ring 406, and adopts a stepped hole structure. The larger diameter section is clearance-fitted with the outer surface of the inner fixing ring 406, and the smaller diameter section is transition-fitted with the outer surface of the clamping rod 408. It moves axially synchronously with the clamping rod 408 and can rotate around the axis of the inner fixing ring 406.

[0027] The inner limiting ring 411 is fixedly connected to the end of the two clamping rods 408 away from the movable sleeve 407, and the center of the inner limiting ring 411 coincides with the center of the inner fixed ring 406.

[0028] The two ends of the telescopic spring 410 are respectively connected to the ends of the two clamping rods 408 away from the inner limiting ring 411. In its natural state, the spring is slightly compressed, and the spring force pushes the clamping rods 408 to keep the inner limiting ring 411 clamped.

[0029] The bottom of the push rod 409 is fixedly connected to the clamping rod 408, and the horizontal section maintains a distance of 20-30mm from the upper surface of the workpiece table 404 to avoid interference with the workpiece table 404 during operation. In its natural state, the telescopic spring 410 is in a slightly compressed state, causing the inner limiting ring 411 to tend to clamp the workpiece. The push rod 409 is welded to the bottom of the clamping rod 408 to facilitate manual adjustment of the position of the clamping rod 408 by the operator.

[0030] The movable sleeve 407 adopts a stepped hole structure. Its large-diameter section has a clearance fit with the outer surface of the inner fixing ring 406, while its small-diameter section has a transition fit with the outer surface of the clamping rod 408. The movable sleeve 407 can rotate around the axis of the inner fixing ring 406 and simultaneously move axially along the through hole with the clamping rod 408. This prevents radial offset of the clamping rod 408 during sliding, ensuring the coaxiality of the inner limiting ring 411 clamping the workpiece, with the coaxiality error controlled within 0.02mm.

[0031] The push rod 409 has an L-shaped structure. Its vertical section is welded and fixed to the bottom of the clamping rod 408. The horizontal section is 50-80mm long, and the end of the horizontal section is fitted with an anti-slip rubber sleeve. The surface of the rubber sleeve has a diamond-shaped anti-slip texture to increase the friction between the operator's hand and the push rod 409, preventing slippage during operation. At the same time, the distance between the horizontal section of the push rod 409 and the upper surface of the workpiece table 404 is 20-30mm, ensuring sufficient operating space and preventing interference with the workpiece table 404.

[0032] The limiting slide rail 302 adopts a rectangular guide rail structure with a guide rail width tolerance of h6 and a surface roughness Ra≤0.8μm. The groove on the stamping plate 303 that mates with the limiting slide rail 302 has a width tolerance of H7 and a surface roughness Ra≤1.6μm. The clearance between the two is controlled between 0.01-0.03mm to ensure that the straightness error of the stamping plate 303 when sliding along the limiting slide rail 302 is ≤0.01mm / m.

[0033] Positioning bosses are provided on both sides of the collection box 6 at the points where it mates with the guide rails on the inner wall of the punching machine 1. The gap between the bosses and the sides of the guide rails is 0.5-1mm to prevent the collection box 6 from shifting laterally during equipment operation. A handle is provided at the front end of the collection box 6 and a limiting block is provided at the rear end. When the collection box 6 is fully pushed into the punching machine 1, the limiting block contacts the inner wall of the punching machine 1.

[0034] A rectangular scrap hole is made on the upper surface of the load-bearing plate 4, and the position of the scrap hole corresponds to the annular discharge hole on the workpiece table 404. A discharge bin 5 is welded to the bottom of the scrap hole. The discharge bin 5 is funnel-shaped to facilitate the collection and sliding of scrap. A guide rail is installed on the bottom of the inner wall of the punching machine 1, and the bottom of the collection box 6 is slidably connected to the guide rail, so that the collection box 6 can be pulled out or pushed in along the guide rail to collect the scrap falling from the discharge bin 5.

[0035] Movable mounting rails are bolted to the top left and right sides of the load-bearing plate 4. The position sensor 10 is snapped onto the top of the mounting rails, allowing it to move along the rails to accommodate the inspection needs of workpieces of different sizes. The position sensor 10 is connected to the electrical control box 7 via wires, and the electrical control between the two is achieved through a PLC program. The position sensor 10 is used to detect the position of the movable table 403, ensuring the accuracy and safety of the punching process.

[0036] Connect the electrical control box 7 to cylinders 402 and 301 via wires. The PLC program is used to control these cylinders via the electrical control box 7. During connection, ensure the wires are correctly connected to their positive and negative terminals to avoid short circuits or open circuits. After completing the electrical connections, perform equipment debugging. First, manually operate the buttons on the electrical control box 7 to control the extension and retraction of cylinders 402 and 301, checking if the movement of the movable table 403 is smooth, the up-and-down sliding of the stamping plate 303 is stable, and the position of the punching ring 304 is accurate. Debug the position sensor 10 by moving the movable table 403 to different positions and observing whether the position sensor 10 can accurately detect the position of the movable table 403 and transmit the signal to the electrical control box 7. Check if the electrical control box 7 can accurately control the actions of cylinders 402 and 301 based on the position signal. If any abnormalities are found, adjust the sensor position or check the electrical connections.

[0037] Example 2 Based on Example 1, a feeding bin 5 is fixedly connected to the bottom of the waste discharge hole. A collection box 6 is installed at the bottom of the feeding bin 5. The bottom of the collection box 6 is slidably connected to the inner wall of the punching machine 1 via a guide rail. An electrical control box 7 is fixedly installed at the bottom of the punching machine 1. Movable mounting rails are fixedly installed on the left and right sides of the top of the load-bearing plate 4. A position sensor 10 is snapped onto the top of the mounting rail. The position sensor 10 is electrically connected to the electrical control box 7 via a PLC program. The position sensor 10 is model CLJ-A12M-2APA-G. This model of proximity switch is inductive, with a detection distance of 5-10mm and a detection accuracy of ±0.05mm.

[0038] After the equipment starts, the PLC first controls cylinder 402 to move the movable table 403. The movement speed is divided into two stages: the initial speed is 50 mm / s, and when the movable table 403 is 100 mm away from the set position, the speed drops to 20 mm / s to achieve a slow landing and avoid impact. After the position sensor 10 detects the arrival signal of the movable table 403, the PLC delays for 0.2 seconds before controlling the stamping cylinder 301 to act, ensuring that the movable table 403 is completely stable. The downward speed of the stamping cylinder 301 is 30 mm / s. After contacting the workpiece, the pressure sensor installed at the output end of the stamping cylinder 301 detects the punching pressure. When the pressure reaches the set value, the pressure is maintained for 0.5 seconds, and then the stamping cylinder 301 is controlled to move upward at a speed of 40 mm / s. The pressure set value is set according to the workpiece material and thickness; the punching pressure for carbon steel parts is set to 5-10 MPa. The pressure sensor is an MPS-6A model with a measurement range of 0-1 MPa.

[0039] Working principle: The operator first pulls the clamping rod 408 outward through the push rod 409. The clamping rod 408 slides along the through hole on the inner fixing ring 406, while compressing the telescopic spring 410, which increases the distance between the inner limit rings 411.

[0040] The annular part to be punched is placed on the worktable 404, so that the outer ring of the part contacts the outer limiting ring 405, thus positioning the outer ring of the part. Then, the push rod 409 is released, and under the elastic restoring force of the telescopic spring 410, the clamping rod 408 moves inward, causing the inner limiting ring 411 to clamp the inner ring of the part, completing the clamping and fixing of the workpiece. For annular parts of different thicknesses, since the inner limiting ring 411 only clamps the inner ring of the part, and the outer limiting ring 405 limits the outer ring, clamping and fixing parts of different thicknesses can be achieved without changing the fixture.

[0041] The operator starts the equipment via the electrical control box 7. The electrical control box 7 controls the cylinder 402 to move via a PLC program. The output of the cylinder 402 pushes the movable table 403 along the slide rail 401 towards the punching mechanism. When the movable table 403 moves to the set position, the position sensor 10 detects the position signal of the movable table 403 and transmits the signal to the electrical control box 7. After receiving the signal, the electrical control box 7 stops the cylinder 402 and simultaneously controls the punching cylinder 301 to move.

[0042] The output end of the stamping cylinder 301 pushes the stamping plate 303 downward, and the stamping plate 303 slides downward along the limit slide rail 302, causing the punching ring 304 to move downward. After the punching ring 304 contacts the annular part on the workpiece table 404, it performs punching processing on the part. The waste generated by punching falls through the annular discharge hole on the workpiece table 404 into the waste hole on the load-bearing plate 4, and then enters the collection box 6 through the discharge bin 5.

[0043] After punching is completed, the electrical control box 7 controls the output end of the punching cylinder 301 to retract upwards, causing the punching plate 303 and the punching ring 304 to reset upwards. Subsequently, the electrical control box 7 controls the output end of the cylinder 402 to extend further, pushing the movable table 403 to extend along the slide rail 401 to facilitate the removal of the punched ring-shaped part. Then, the electrical control box 7 controls the output end of the cylinder 402 to reset, returning to the initial position.

Claims

1. A punching jig for annular parts, comprising a puncher (1) and a machining table (2) fixedly installed on the top of the puncher (1), characterized in that: The bottom of the inner wall of the processing table (2) is fixedly connected to a load-bearing plate (4), and the top of the load-bearing plate (4) is provided with a punching mechanism and a workpiece fixing mechanism. The workpiece fixing mechanism includes a slide rail (401), a cylinder (402), a movable table (403), and a workpiece table (404). The slide rail (401) and the cylinder (402) are both fixedly installed on the top of the load-bearing plate (4). The movable table (403) is connected to the top of the output end of the cylinder (402). The workpiece table (404) is bolted to the top of the movable table (403). The top of the workpiece stage (404) is fixedly connected to an outer limiting ring (405) and an inner fixing ring (406). The surface of the inner fixing ring (406) is provided with a through hole. A clamping rod (408) is slidably connected inside the through hole. A movable sleeve (407) is connected to the outer surface of one end of the clamping rod (408). An inner limiting ring (411) is fixedly connected to the other end of the clamping rod (408). A telescopic spring (410) is fixedly connected to one end of the clamping rod (408). A push rod (409) is fixedly connected to the bottom of the clamping rod (408).

2. The punch jig for a ring-shaped part according to claim 1, characterized by: The output end of the cylinder (402) is fixedly connected to the bottom of the movable table (403) through a fixing block. The surfaces of the movable table (403) and the workpiece table (404) are provided with multiple bolt holes. The surface of the workpiece table (404) is provided with an annular feeding hole.

3. The punch tool for punching a ring-shaped part according to claim 1, wherein: The upper surface of the load-bearing plate (4) is provided with a rectangular waste hole. The bottom of the waste hole is fixedly connected to a discharge bin (5). The bottom of the discharge bin (5) is provided with a collection box (6). The bottom of the collection box (6) is slidably connected to the inner wall of the punching machine (1) through a guide rail.

4. The punch tool for punching a ring-shaped part according to claim 1, wherein: The bottom of the punching machine (1) is fixedly equipped with an electrical control box (7), and the top left and right sides of the load-bearing plate (4) are fixedly equipped with movable mounting rails. The top of the mounting rails is fitted with a position sensor (10), and the position sensor (10) is electrically connected to the electrical control box (7) through a PLC program.

5. The punch tool for punching a ring-shaped part according to claim 1, wherein: The bottom of the punching machine (1) is equipped with a support base (8) and casters (9), and the top of the support base (8) is connected to the bottom of the punching machine (1) by a telescopic rod.

6. The punch tool for a ring-shaped part according to claim 1, characterized in that: The punching mechanism includes a mounting plate (3), a punching cylinder (301), a limiting slide rail (302), a punching plate (303), and a punching ring (304). The mounting plate (3) is fixedly connected to the inner wall of the processing table (2). The punching cylinder (301) is fixedly installed at the top center of the mounting plate (3). The limiting slide rail (302) is fixedly connected to the bottom of the mounting plate (3). The punching plate (303) is slidably connected to the outer surface of the limiting slide rail (302). The top of the punching plate (303) is connected to the output end of the punching cylinder (301). The punching ring (304) is fixedly connected to the bottom of the punching plate (303).

7. The punch tool for punching a ring-shaped part according to claim 4, wherein: The electrical control box (7) is electrically connected to the cylinder (402) and the stamping cylinder (301) via a PLC program.

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