Arc surface positioning and punching device for driving shaft machining and operation method thereof

Abstract

The application provides a circular arc surface positioning and punching device for drive shaft machining and an operation method thereof, and relates to the field of punching. The circular arc surface positioning and punching device for drive shaft machining and the operation method thereof are provided with swing supports installed on a base and supported by elastic sheets, have a triangular structure, rotate around their rotation axes when stressed, and are symmetrically arranged in two groups. A pressing wheel and a supporting wheel are rotatably arranged on the swing supports. The pressing wheel is used for applying a pressing force to the drive shaft, and the supporting wheel is used for supporting the drive shaft. The circular arc surface positioning and punching device for drive shaft machining and the operation method thereof can not only quickly position and align, but also automatically adapt to drive shafts with different diameters. The friction force between the anti-skid belt and the drive shaft is used to directly drive the drive shaft, the circumferential angle is adjusted, the rotation of the winding wheel is controlled by a double-shaft servo motor, a new section of the anti-skid belt that is not worn is moved to the contact area of the drive shaft, and the original worn contact surface is replaced.

Description

Technical Field

[0001] This invention relates to the field of punching, specifically to a circular arc surface positioning punching device for drive shaft machining and its operating method. Background Technology

[0002] Drive shafts are core components of mechanical transmission systems and are widely used in automobiles, construction machinery, agricultural machinery and other fields. Their main function is to transmit torque and realize power transmission. During the processing of solid drive shafts, positioning pin holes and mounting holes need to be punched on their smooth arc surfaces to meet the needs of subsequent assembly positioning and connection fixation. The punching accuracy directly affects the assembly quality and stability of the drive shaft.

[0003] Currently, most existing drive shaft arc surface positioning punching devices use V-blocks or single arc blocks for positioning, and use hydraulic or pneumatically driven punches to complete the punching. For example, the drive shaft is placed on the positioning block, the shaft is fixed by the clamping mechanism, the positioning block is used to fit the arc surface of the drive shaft to achieve positioning, and then the power source drives the punch to feed radially perpendicular to the axis of the drive shaft, pressing in the solid shaft material, and forming the required hole through shearing and extrusion.

[0004] However, existing devices are cumbersome to position and adjust the punch when punching drive shafts of different diameters. This is because the positioning blocks are mostly fixed structures and need to be disassembled and replaced as a whole to adapt to different diameters. In addition, the height of the punch needs to be manually and repeatedly adjusted to align with the center of the shaft. The adjustment is time-consuming and the operation is complicated. Therefore, there is an urgent need for a circular arc surface positioning punching device that can adapt to a variety of different diameters, is easy to operate, and has a short operation time to solve the above problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a circular arc surface positioning punching device and its operating method for machining drive shafts, which solves the problem of cumbersome positioning and punch position adjustment when punching drive shafts of different diameters.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a circular arc surface positioning punching device for machining a drive shaft and its operating method. The circular arc surface positioning punching device for machining a drive shaft includes a base and a support frame, as well as a hydraulic cylinder for sliding along the support frame, and further includes;

[0007] The swing bracket is installed on the base and supported by elastic plates. It has a triangular structure and rotates around its axis of rotation when subjected to force. Two sets of swing brackets are symmetrically arranged.

[0008] The pressure wheel and the support wheel are rotatably mounted on the swing bracket. The pressure wheel is used to apply a clamping force to the drive shaft, and the support wheel is used to support the drive shaft.

[0009] The take-up reels are mounted on the base and driven to rotate by a dual-axis servo motor. Anti-slip strips are installed on the two take-up reels, with both ends of the anti-slip strips fixed and wrapped around the corresponding take-up reels.

[0010] In the initial state, the anti-slip strip overlaps the pressure wheel.

[0011] During the punching process, the anti-slip strip is pressed against the support wheel. When the swing bracket rotates, the anti-slip strip is attached to the arc surface of the drive shaft, and the pressure wheel and the support wheel work together to clamp the anti-slip strip.

[0012] Preferably, the support frame is provided with a slide rail fixed to it, a slider fixed to the hydraulic cylinder is slidably installed in the slide rail, a lead screw is rotatably installed in the slide rail, the lead screw passes through the slider and is threadedly connected to the slider, and one end of the lead screw is used to connect to an external power source.

[0013] Preferably, the swing bracket further includes two tripods and a fixed base, the fixed base being fixedly connected to the base, and the rotation shaft passing through the two tripods and the fixed base, and being rotatably connected to the tripods and the fixed base.

[0014] Preferably, the elastic sheet has a "C" shaped cross section and is fixedly installed between the tripod and the base, and the elastic sheet can overcome the gravity of the drive shaft.

[0015] Preferably, the outer circumferential surfaces of the pressure wheel and the support wheel are provided with annular grooves, and the anti-slip strip is located in the annular grooves.

[0016] Preferably, the thickness of the anti-slip strip is not less than the depth of the annular groove.

[0017] Preferably, the output end of the hydraulic cylinder is located on the symmetrical center line of the two sets of swing brackets, and the feed direction is set perpendicular to the axis of the drive shaft.

[0018] Preferably, the surface of the anti-slip strip is treated with an anti-slip coating.

[0019] Preferably, a fixing block and a dual-axis servo motor are fixedly installed on the base, the winding wheel is rotatably connected to the fixing block, and the output shafts of the two dual-axis servo motors are fixedly connected to the winding wheel that is close to them.

[0020] An operating method for an arc-shaped surface positioning punching device for machining a drive shaft further includes the following steps:

[0021] S1: The dual-axis servo motor drives the take-up wheel to rotate, loosens the anti-slip belt, and places the drive shaft to be processed on the anti-slip belt between the two sets of pressure rollers, allowing the drive shaft to hang down naturally.

[0022] S2: The dual-axis servo motor drives the take-up wheel to rotate in the opposite direction, tightening the anti-slip belt and keeping it taut at all times. Under the weight of the drive shaft and the action of the swing bracket, the anti-slip belt conforms to the arc surface of the drive shaft. The pressure wheel and the support wheel cooperate to clamp the anti-slip belt, completing the positioning of the arc surface of the drive shaft.

[0023] S3: An external power source drives the lead screw to rotate, which in turn moves the slider and hydraulic cylinder along the slide rail, adjusting the punch to a position aligned with the center of the drive shaft;

[0024] S4: The hydraulic cylinder is activated, driving the punch to feed radially along the drive shaft to perform punching on the drive shaft. During the punching process, the dual-axis servo motor continuously controls the winding wheel to keep the anti-slip belt taut at all times.

[0025] S5: When the circumferential punching angle of the drive shaft needs to be adjusted, the dual-axis servo motor drives the take-up wheel to rotate, which drives the drive shaft, pressure wheel and support wheel to rotate synchronously through the anti-slip belt, thereby realizing the adjustment of the circumferential angle of the drive shaft. After the adjustment is completed, the punching process continues.

[0026] Compared with the prior art, the present invention has the following beneficial effects: By setting the anti-slip belt, in conjunction with two sets of support wheels and pressure wheels, it can not only quickly position and align, but also automatically adapt to drive shafts of different diameters and prevent rigid contact from being squeezed. When it is necessary to punch holes at different circumferential positions of the drive shaft, there is no need to disassemble and re-clamp the drive shaft. It is only necessary to drive the winding wheel to rotate through the dual-axis servo motor. The winding wheel drives the anti-slip belt to move. Utilizing the friction between the anti-slip belt and the drive shaft, the drive shaft, pressure wheel and support wheel are directly driven to rotate synchronously to achieve circumferential angle adjustment. When the anti-slip belt shows local wear after long-term use, the winding wheel can be rotated through the dual-axis servo motor to move the new, unworn section of the anti-slip belt to the contact area with the drive shaft, replacing the original worn contact surface and continuing to ensure gripping friction and positioning accuracy. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a partial structural diagram of the present invention;

[0029] Figure 3 This is a side view of the base and bracket of the present invention;

[0030] Figure 4 This is a cross-sectional view of the anti-slip strip overlapping the pressure wheel in the initial state of the invention;

[0031] Figure 5 This is a cross-sectional view of the drive shaft to be processed placed on the anti-slip belt and hanging naturally when the anti-slip belt is in a relaxed state according to the present invention.

[0032] Figure 6This is a cross-sectional view of the pressure wheel and support wheel of the present invention when they are gripped by the anti-slip pads.

[0033] Figure 7 This is a schematic diagram of the slider and lead screw of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the swing bracket of the present invention.

[0035] The components include: 1. base; 2. support frame; 3. hydraulic cylinder; 4. swing bracket; 401. rotating shaft; 402. tripod; 5. elastic sheet; 6. pressure wheel; 7. support wheel; 8. winding wheel; 9. anti-slip strip; 10. slide rail; 11. slider; 12. lead screw; 13. annular groove; and 14. dual-axis servo motor. Detailed Implementation

[0036] like Figures 1-8 As shown, a circular arc surface positioning punching device for drive shaft machining includes a base 1, a support frame 2, and a hydraulic cylinder 3 for sliding along the support frame 2. The output end of the hydraulic cylinder 3 is used to install a punch. The support frame 2 is fixed relative to the base 1. The support frame 2 is provided with a slide rail 10 fixed relative to it. A slider 11 fixed relative to the hydraulic cylinder 3 is slidably installed in the slide rail 10. A lead screw 12 is rotatably installed in the slide rail 10. The lead screw 12 passes through the slider 11 and is threadedly connected to the slider 11. One end of the lead screw 12 is used to connect to an external power source, which can be a forward and reverse reversible motor. The position adjustment of the hydraulic cylinder 3 and its punch is achieved through the cooperation of the slide rail 10, the slider 11, and the lead screw 12. The axial position of the punch can be quickly adjusted to meet the machining requirements of different hole positions of the drive shaft, further improving the versatility and machining efficiency of the device.

[0037] The swing bracket 4, installed on the base 1 and supported by the elastic plate 5, has a triangular structure and rotates around its rotation axis 401 when subjected to force. Two sets of swing brackets 4 are symmetrically arranged. The swing bracket 4 also includes two triangular frames 402 and a fixed seat. The fixed seat is fixedly connected to the base 1. The rotation axis 401 passes through the two triangular frames and the fixed seat and is rotatably connected to the triangular frames and the fixed seat. The triangular frames 402 make the swing bracket 4 structurally rigid and rotationally stable. Together with the fixed seat and the rotation axis 401, it ensures the consistency of left and right symmetrical movement, keeping the drive shaft in the center position and providing a guarantee for automatic centering punching. The elastic plate 5 has a "C" shaped cross section and is fixedly installed between the triangular frame 402 and the base 1. The elastic plate 5 can overcome the gravity of the drive shaft and provide stable elastic support for the swing bracket 4, allowing the swing bracket 4 to swing up and down adaptively with the change of the drive shaft diameter, automatically adapting to drive shafts of different thicknesses without the need for manual adjustment of the support height, simplifying the adjustment operation.

[0038] The pressure roller 6 and the support roller 7 are rotatably mounted on the swing bracket 4. The pressure roller 6 is used to apply a clamping force to the drive shaft, and the support roller 7 is used to support the drive shaft. There are two sets of pressure rollers 6 and support rollers 7, with two in each set. The two sets of pressure rollers 6 and support rollers 7 are symmetrically arranged. The outer circumferential surface of the pressure roller 6 and the support roller 7 is provided with an annular groove 13. The anti-slip strip 9 is located in the annular groove 13. The annular groove 13 can limit and guide the anti-slip strip 9 to prevent it from deviating or slipping, ensuring that the anti-slip strip 9 always stably wraps around the arc surface of the drive shaft, thereby improving the positioning reliability.

[0039] The take-up rollers 8 are mounted on the base 1 and driven to rotate by the dual-axis servo motor 14. Anti-slip strips 9 are installed on the two take-up rollers 8. The two ends of the anti-slip strips 9 are fixed and wrapped around the corresponding take-up rollers 8. The thickness of the anti-slip strips 9 is not less than the depth of the annular groove 13, ensuring that the anti-slip strips 9 can fully contact and press the drive shaft, increase the friction area, improve the clamping and circumferential positioning effect, and prevent the drive shaft from slipping and deflecting during punching. The surface of the anti-slip strips 9 is treated with anti-slip material to increase the friction between the anti-slip strips 9 and the drive shaft, enhance the circumferential positioning and transmission effect, and facilitate subsequent rotation and angle adjustment of the drive shaft by the anti-slip strips 9.

[0040] The output end of the hydraulic cylinder 3 is located on the symmetrical center line of the two sets of swing brackets 4, and the feed direction is set perpendicular to the axis of the drive shaft. For drive shafts of various diameters, the punch at the output end of the hydraulic cylinder 3 can automatically align with the center of the shaft, eliminating the need for manual and repeated fine-tuning and shortening the adjustment time.

[0041] A fixing block and a dual-axis servo motor 14 are fixedly installed on the base 1. The take-up reel 8 is rotatably connected to the fixing block. The dual-axis servo motor 14 has two output shafts, and the output shafts of the two dual-axis servo motors 14 are fixedly connected to the take-up reel 8 that is close to them. The dual-axis servo motor 14 can drive the anti-slip belt 9 to drive the drive shaft to rotate circumferentially, realize the automatic adjustment of the punching angle, and can also control the tightening, loosening and circumferential rotation of the anti-slip belt 9. At the same time, the dual-axis servo motor 14 has a self-locking function when it stops rotating, which can keep both ends of the anti-slip belt 9 in a stationary state, effectively preventing the drive shaft from driving the anti-slip belt 9 to rotate accidentally during the punching process, and ensuring the stability and reliability of the punching position.

[0042] In the initial state, the anti-slip strip 9 overlaps the pressure roller 6.

[0043] During the punching process, the anti-slip strip 9 is pressed against the support wheel 7. When the swing bracket 4 rotates, the anti-slip strip 9 is attached to the arc surface of the drive shaft. The pressure wheel 6 and the support wheel 7 work together to clamp the anti-slip strip 9.

[0044] By setting up a rotatable swing bracket 4, pressure wheel 6, support wheel 7, and anti-slip strip 9 winding structure, there is no need to use traditional fixed positioning blocks. It can adaptively fit the arc surface of drive shafts of different diameters to achieve automatic clamping and positioning. It avoids the problem of disassembling and replacing positioning blocks required by traditional devices, has a wider range of applicability, and is easier to adjust. At the same time, the anti-slip strip 9 flexibly fits the drive shaft, ensuring stable and reliable positioning, effectively preventing the shaft from moving or rotating during punching, and improving punching accuracy.

[0045] An operating method for an arc-shaped surface positioning punching device for machining a drive shaft further includes the following steps:

[0046] S1: The dual-axis servo motor 14 drives the winding wheel 8 to rotate, loosens the anti-slip belt 9, and places the drive shaft to be processed on the anti-slip belt 9 between the two sets of pressure rollers 6, so that the drive shaft hangs down naturally.

[0047] S2: The dual-axis servo motor 14 drives the winding wheel 8 to rotate in the opposite direction, tightening the anti-slip belt 9 so that the anti-slip belt 9 is always kept taut. Under the action of the gravity of the drive shaft and the swing bracket 4, the anti-slip belt 9 fits the arc surface of the drive shaft. The pressure wheel 6 and the support wheel 7 cooperate to clamp the anti-slip belt 9, completing the positioning of the arc surface of the drive shaft.

[0048] S3: An external power source drives the lead screw 12 to rotate, which in turn moves the slider 11 and the hydraulic cylinder 3 along the slide rail 10, adjusting the punch to a position aligned with the center of the drive shaft.

[0049] S4: The hydraulic cylinder 3 is activated, driving the punch to feed radially along the drive shaft to perform punching on the drive shaft. During the punching process, the dual-axis servo motor 14 continuously controls the winding wheel 8 to keep the anti-slip belt 9 taut and ensure stable positioning of the drive shaft.

[0050] S5: When the circumferential punching angle of the drive shaft needs to be adjusted, the dual-axis servo motor 14 drives the winding wheel 8 to rotate, which drives the drive shaft, pressure wheel 6 and support wheel 7 to rotate synchronously through the anti-slip belt 9, thereby realizing the adjustment of the circumferential angle of the drive shaft. After the adjustment is completed, the punching process continues.

[0051] When using, such as Figures 1-4 As shown, when the device is not equipped with a drive shaft, the swing bracket 4 maintains its initial posture under the support of the elastic sheet 5, and the anti-slip belt 9 naturally overlaps the pressure wheel 6 without contacting the support wheel 7; the dual-axis servo motor 14 is in a stationary state, and the winding wheel 8 tightens the anti-slip belt 9 and keeps it taut. The anti-slip belt 9 is in a regular position, which facilitates the rapid feeding of the drive shaft.

[0052] Next, as Figure 5As shown, the anti-slip belt 9 is loosened by the winding wheel 8, and the drive shaft to be processed is placed on the anti-slip belt 9 between the two sets of pressure wheels 6. At this time, under the elastic support of the elastic plate 5, the swing bracket 4 will not rotate, while the drive shaft presses down on the anti-slip belt 9 under its own weight, so that the anti-slip belt 9 forms a "V" shape. At this time, the center axis of the drive shaft is automatically corrected to the center line symmetrical with the two support wheels 7. Then, the punch is installed on the output end of the hydraulic cylinder 3 (if different specifications of holes need to be punched, only the corresponding punch needs to be replaced). The hydraulic cylinder 3 is started to drive the punch to press against the drive shaft. As the hydraulic cylinder 3 slowly applies pressure, it pushes the drive shaft to move down. The drive shaft drives the anti-slip belt 9 to gradually fit against the support wheels 7 and pushes the swing brackets on both sides to rotate downward around the rotation axis 401. Under the action of the elastic plate 5, the swing bracket 4 automatically swings to the corresponding height according to the diameter of the drive shaft, and the anti-slip belt 9... Under the coordinated clamping of the pressure roller 6 and the support roller 7, the flexible surface of the drive shaft is wrapped and conforms to the outer arc surface, forming a large-area encircling positioning. This achieves automatic adaptation to drive shafts of different diameters, eliminating the need to replace the positioning block or manually adjust the support height. The flexible anti-slip strip 9 is used for close-fitting positioning, avoiding direct compression between the rigid positioning block and the shaft surface, thus preventing damage and stress concentration. The large encircling contact area provides more stable positioning and effectively prevents movement and rotation during punching. It should be noted that since the output end of the hydraulic cylinder 3 and the punch are always located on the symmetrical center line of the two sets of swing brackets 4, and the punch feed direction is perpendicular to the drive shaft axis, regardless of the change in the thickness of the drive shaft, the drive shaft axis will automatically coincide with the punch feed direction after the swing bracket 4 self-adjusts, achieving automatic centering. The punch does not need to be manually and repeatedly fine-tuned in height, quickly aligning with the shaft center, shortening preparation time, and improving processing efficiency and versatility.

[0053] It should be noted that the external power source drives the lead screw 12 to rotate, which in turn drives the slider 11, hydraulic cylinder 3 and punch to move along the slide rail 10, thus completing the axial position adjustment of the punching hole. Subsequently, the hydraulic cylinder 3 drives the punch to feed radially downward to punch the drive shaft. During the punching process, the dual-axis servo motor 14 continuously maintains the anti-slip band 9 at a moderate tension, so that the anti-slip band 9 always holds the drive shaft tightly. Moreover, when the dual-axis servo motor 14 stops rotating, it has a self-locking function, which can keep both ends of the anti-slip band 9 stationary and prevent the drive shaft from rotating accidentally under the impact force of punching.

[0054] When punching holes at different circumferential positions of the drive shaft, there is no need to disassemble or re-clamp the drive shaft. The dual-axis servo motor 14 drives the take-up wheel 8 to rotate, and the take-up wheel 8 drives the anti-slip belt 9 to move. Utilizing the friction between the anti-slip belt 9 and the drive shaft, the drive shaft, pressure wheel 6 and support wheel 7 are directly driven to rotate synchronously, thereby achieving circumferential angle adjustment. The drive shaft rotation angle can be adjusted without disassembly or secondary alignment, achieving fast, continuous adjustment and significantly improving the processing efficiency of multi-directional holes.

[0055] When the anti-slip belt 9 experiences localized wear after long-term use, the winding wheel 8 can be rotated by the dual-axis servo motor 14 to move the unworn new section of the anti-slip belt 9 to the contact area with the drive shaft, replacing the original worn contact surface and continuing to ensure gripping friction and positioning accuracy.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circular arc surface positioning punching device for machining a drive shaft, comprising a base (1), a support frame (2), and a hydraulic cylinder (3) for sliding along the support frame (2), characterized in that: Also includes; The swing bracket (4) is installed at the base (1) and supported by the elastic sheet (5). It has a triangular structure and rotates around its rotation axis (401) when subjected to force. The two sets of swing brackets (4) are symmetrically arranged. The pressure wheel (6) and the support wheel (7) are rotatably mounted on the swing bracket (4). The pressure wheel (6) is used to apply a clamping force to the drive shaft, and the support wheel (7) is used to support the drive shaft. The take-up reel (8) is installed on the base (1) and driven to rotate by the dual-axis servo motor (14). Anti-slip strips (9) are installed on the two take-up reels (8). The two ends of the anti-slip strips (9) are fixed and wrapped around the corresponding take-up reels (8). In the initial state, the anti-slip strip (9) overlaps the pressure roller (6); During the punching process, the anti-slip strip (9) is pressed against the support wheel (7). When the swing bracket (4) rotates, the anti-slip strip (9) is attached to the arc surface of the drive shaft. The pressure wheel (6) and the support wheel (7) work together to clamp the anti-slip strip (9).

2. The arc-shaped surface positioning punching device for drive shaft machining according to claim 1, characterized in that: The support frame (2) is provided with a slide rail (10) fixed to it. A slider (11) fixed to the hydraulic cylinder (3) is slidably installed in the slide rail (10). A lead screw (12) is rotatably installed in the slide rail (10). The lead screw (12) passes through the slider (11) and is threadedly connected to the slider (11). One end of the lead screw (12) is used to connect to an external power source.

3. The arc-shaped surface positioning punching device for drive shaft machining according to claim 1, characterized in that: The swing bracket (4) also includes two tripods (402) and a fixed seat. The fixed seat is fixedly connected to the base (1). The rotating shaft (401) passes through the two tripods and the fixed seat and is rotatably connected to the tripods and the fixed seat.

4. The arc-shaped surface positioning punching device for drive shaft machining according to claim 3, characterized in that: The elastic sheet (5) has a "C" shaped cross section and is fixedly installed between the tripod (402) and the base (1), and the elastic sheet (5) can overcome the gravity of the drive shaft.

5. The arc-shaped surface positioning punching device for drive shaft machining according to claim 1, characterized in that: The outer circumferential surfaces of the pressure wheel (6) and the support wheel (7) are provided with annular grooves (13), and the anti-slip strip (9) is located in the annular grooves (13).

6. The arc-shaped surface positioning punching device for drive shaft machining according to claim 5, characterized in that: The thickness of the anti-slip strip (9) is not less than the depth of the annular groove (13).

7. The arc-shaped surface positioning punching device for drive shaft machining according to claim 1, characterized in that: The output end of the hydraulic cylinder (3) is located on the symmetrical center line of the two sets of swing brackets (4), and the feed direction is set perpendicular to the axis of the drive shaft.

8. The arc-shaped surface positioning punching device for drive shaft machining according to claim 1, characterized in that: The surface of the anti-slip strip (9) is treated with anti-slip material.

9. The arc-shaped surface positioning punching device for drive shaft machining according to claim 1, characterized in that: A fixing block and a dual-axis servo motor (14) are fixedly installed on the base (1). The winding wheel (8) is rotatably connected to the fixing block. The output shafts of the two dual-axis servo motors (14) are fixedly connected to the winding wheel (8) that is close to them.

10. A method for operating a circular arc surface positioning punching device for machining a drive shaft, comprising the circular arc surface positioning punching device for machining a drive shaft as described in any one of claims 1-9, characterized in that: It also includes the following steps: S1: The dual-axis servo motor (14) drives the winding wheel (8) to rotate, loosens the anti-slip belt (9), and places the drive shaft to be processed on the anti-slip belt (9) between the two sets of pressure rollers (6), so that the drive shaft hangs down naturally. S2: The dual-axis servo motor (14) drives the winding wheel (8) to rotate in the opposite direction, tightening the anti-slip belt (9) so that the anti-slip belt (9) is always kept taut. Under the action of the gravity of the drive shaft and the swing bracket (4), the anti-slip belt (9) fits the arc surface of the drive shaft. The pressure wheel (6) and the support wheel (7) cooperate to clamp the anti-slip belt (9) and complete the positioning of the arc surface of the drive shaft. S3: An external power source drives the lead screw (12) to rotate, which in turn drives the slider (11) and the hydraulic cylinder (3) to move along the slide rail (10) and adjusts the punch to a position aligned with the center of the drive shaft; S4: The hydraulic cylinder (3) moves, driving the punch to feed radially along the drive shaft to punch the drive shaft. During the punching process, the dual-axis servo motor (14) continuously controls the winding wheel (8) to keep the anti-slip belt (9) taut. S5: When the circumferential punching angle of the drive shaft needs to be adjusted, the dual-axis servo motor (14) drives the winding wheel (8) to rotate, and drives the drive shaft, pressure wheel (6) and support wheel (7) to rotate synchronously through the anti-slip belt (9) to realize the adjustment of the circumferential angle of the drive shaft. After the adjustment is completed, the punching process continues.

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