A high-precision milling device and method for pulley machining

Abstract

The application belongs to the technical field of milling processing, and particularly relates to a high-precision milling device and method for belt wheel processing. In view of the poor fitting effect of a milling cutter of a milling device during processing, the following scheme is proposed, which comprises a bottom table, a lifting seat is arranged above the bottom table, a receiving block is fixedly connected to one side of the lifting seat, and a movable seat is fixedly connected to the other side of the receiving block. The application discloses a high-precision milling device and method for belt wheel processing. The precise angle deflection driven by a motor enables the tool head to actively adapt to the inclined surface of a workpiece at different angles, ensures the optimal direction of the milling force, improves the surface quality, and replaces the cumbersome method of repeatedly disassembling and overturning the workpiece to process different inclined surfaces, thereby eliminating the reference error caused by repeated clamping and fixing of the workpiece, and ensuring the processing symmetry and coaxiality of multiple inclined surfaces on the workpiece.

Description

A high-precision milling device and method for belt pulley machining Technical Field

[0001] This invention relates to the field of milling technology, and in particular to a high-precision milling apparatus and method for machining pulleys. Background Technology

[0002] Pulleys are disc-shaped parts, generally relatively large in size, and are mainly manufactured by casting and forging processes. They are primarily used for long-distance power transmission and are commonly used in small diesel engines, machining equipment, and agricultural machinery. Pulleys are machined by milling machines, using milling cutters as cutting tools to form their shape.

[0003] To ensure the service life of the belt after installation, the pulley needs to be deburred. However, the milling cutter spindle of current milling equipment is usually at a fixed angle or can only move within a limited plane. For pulleys with specific inclined surfaces (such as V-type pulleys and the rim inclined surfaces of multi-wedge pulleys), it is difficult to keep the milling cutter axis at the optimal perpendicular or matching angle with the machining surface, resulting in unstable machining quality. Summary of the Invention

[0004] This invention discloses a high-precision milling device and method for belt pulley processing, aiming to solve the technical problem in the background art that the milling cutter of the current milling device has poor contact effect with the processing surface during processing.

[0005] This invention proposes a high-precision milling device for belt pulley processing, comprising a base platform, a lifting seat above the base platform, a receiving block fixedly connected to one side of the lifting seat, and a movable seat fixedly connected to the other side of the receiving block. A movable milling assembly is mounted on the movable seat, comprising a milling box, a tool holder movably connected inside the milling box, a cutter head fixedly connected to the lower end of the tool holder, a milling motor fixedly connected to the upper side of the milling box, the output shaft of the milling motor connected to a first transmission shaft via a first coupling, the other end of the first transmission shaft fixedly connected to the tool holder, and a tilting seat fixedly connected to the outside of the milling box. A tilting shaft is mounted on the tilting seat, and the movable seat has a mounting hole. The tilting shaft is movably connected to the mounting hole of the movable seat, one end of the tilting shaft fixedly connected to a driving gear located outside the movable seat, a tilting motor fixedly connected to the upper side of the receiving block, the output shaft of the tilting motor connected to a second transmission shaft via a second coupling, and the other end of the second transmission shaft fixedly connected to a tilting gear, which meshes with the driving gear.

[0006] In a preferred embodiment, a curved frame is fixedly connected to the outer side of the milling box. A convex shaft is provided at the lower end of the curved frame. An adjusting arm is sleeved on the outside of the convex shaft. A threaded hole is provided on the convex shaft of the curved frame. A locking knob is rotatably connected to the inside of the threaded hole through the inner wall thread. A protrusion is provided on the lower side of the locking knob. The locking knob can be tightened to press the adjusting arm into the curved frame.

[0007] In a preferred embodiment, a synchronous feedback module is provided at the other end of the adjusting arm;

[0008] The synchronous feedback module includes a tail section and a suspension seat. A clamp is provided on the front side of the tail section. The clamp is a horizontal U-shaped frame. The suspension seat is fixedly connected to the U-shaped frame of the clamp. Four symmetrical sliding holes are provided on the tail section. Four movable rods are fixedly connected to the side of the clamp near the tail section. The four movable rods are movably connected to the sliding holes of the tail section. A return spring is fixedly connected between the clamp and the tail section.

[0009] The suspension seat has vertically distributed slides in the middle, and an inner slide is movably connected inside the slides. A vertical box is fixedly connected to the side of the inner slide away from the clamp. A bionic fabric layer is provided on the outside of the vertical box. An airbag tube is fixedly connected between the bionic fabric layer and the vertical box. A perforation is provided in the middle of the inner slide, and a bidirectional push plate is fixedly connected inside the perforation. Two symmetrical circular slots are provided on the suspension seat. A pressure sensor is fixedly connected inside both circular slots. A functional spring is fixedly connected between the bidirectional push plate on the same side and the pressure sensor.

[0010] In a preferred embodiment, the upper side of the base is provided with two symmetrical transverse slide rails, the upper side of the two transverse slide rails is movably connected to the same upright seat, one side of the upright seat is provided with two vertical slide rails, the side of the lifting seat away from the receiving block is provided with two slide grooves, the lifting seat is movably connected to the two vertical slide rails of the upright seat, and the top of the upright seat is fixedly connected with a Z-axis motor, the output shaft of the Z-axis motor is connected to a Z-axis lead screw through a coupling, the lifting seat is provided with a vertical threaded through hole, and the Z-axis lead screw is rotatably connected to the vertical threaded through hole of the lifting seat through the outer wall thread;

[0011] The lower part of the stand has a transverse threaded hole, and a Y-axis motor is fixedly connected to the base. The output shaft of the Y-axis motor is connected to a Y-axis lead screw through a coupling, and the other end of the Y-axis lead screw passes through the transverse threaded hole of the stand. The Y-axis lead screw is rotatably connected to the transverse threaded hole of the stand through the outer wall thread.

[0012] In a preferred embodiment, a workbench is fixedly connected to the front side of the base platform, and a work box is fixedly connected to the upper side of the workbench. The work box has multiple windows, each of which is fixedly connected with tempered glass. A rotary table is movably connected to the upper side of the workbench, and a hydraulic cylinder is fixedly connected to the upper side of the rotary table. A central seat is fixedly connected to the telescopic end of the hydraulic cylinder, and a rotating sleeve is fixedly connected to the outer side of the central seat. A circular mounting hole is provided on the work box, and the rotating sleeve is movably connected to the circular mounting hole of the work box.

[0013] A placement seat is fixedly connected to the upper side of the central base. A threaded hole is opened in the middle of the placement seat. A fixing block is rotatably connected to the threaded hole through the thread. A ring gear is fixedly connected to the lower side of the rotary table. A rotary motor is fixedly connected inside the work box. The output shaft of the rotary motor is connected to a rotating shaft through a coupling. The lower end of the rotating shaft is movably connected to the upper side of the work table. A rotary gear is fixedly connected to the outside of the rotating shaft. The rotary gear and the ring gear mesh through tooth grooves.

[0014] A high-precision milling method for belt pulley machining, using a high-precision milling apparatus for belt pulley machining as described above, includes the following steps:

[0015] Step 1: Secure the pulley to the mounting base using the fixing block;

[0016] Step 2: First, adjust the stand according to the grinding position of the burrs on the outside of the pulley. Then, adjust the lifting seat simultaneously to make the cutter head fit the grinding position. Then, adjust the adjusting arm to make the bionic cloth layer contact the outside of the pulley.

[0017] Step 3: Start the device. The live milling assembly grinds the burrs on the outside of the pulley. At the same time, the synchronous feedback module provides real-time feedback on the external status of the pulley, thereby controlling the grinding process.

[0018] Step 4: Adjust the movable milling assembly according to the angle of the outer bevel of the pulley to make the cutter head meet the bevel to be ground, then adjust the adjusting arm, and then start the device to perform the bevel burr grinding operation.

[0019] As can be seen from the above, the high-precision milling device for belt pulley processing provided by the present invention has a precise angle deflection driven by a motor, which enables the cutter head to actively adapt to the workpiece inclined surface at different angles, ensuring the optimal direction of milling force and improving the surface quality of the machined surface. Moreover, this method eliminates the cumbersome traditional method of repeatedly disassembling and flipping the workpiece to process different inclined surfaces. By actively adjusting the tool posture to replace workpiece repositioning, the reference error caused by repeated clamping and fixing of the workpiece is eliminated, ensuring the machining symmetry and coaxiality of multiple inclined surfaces on the workpiece. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the overall structure of a high-precision milling device for belt pulley processing proposed in this invention.

[0021] Figure 2 is a schematic diagram of the lifting seat structure of a high-precision milling device for belt pulley processing proposed in this invention;

[0022] Figure 3 is a schematic diagram of the live milling assembly structure of a high-precision milling device for belt pulley processing proposed in this invention.

[0023] Figure 4 is a schematic diagram of the curved frame structure of a high-precision milling device for belt pulley processing proposed in this invention.

[0024] Figure 5 is a schematic diagram of the disassembled structure of the curved frame and adjusting arm of a high-precision milling device for belt pulley processing proposed in this invention.

[0025] Figure 6 is a schematic diagram of the synchronous feedback module structure of a high-precision milling device for belt pulley processing proposed in this invention.

[0026] Figure 7 is a side view of a high-precision milling device for belt pulley processing proposed in this invention.

[0027] Figure 8 is a schematic diagram of the base and support structure of a high-precision milling device for belt pulley processing proposed in this invention.

[0028] Figure 9 is a schematic diagram of the stand and lifting seat structure of a high-precision milling device for belt pulley processing proposed in this invention;

[0029] Figure 10 is a schematic diagram of the disassembled worktable structure of a high-precision milling device for belt pulley processing proposed in this invention.

[0030] In the diagram: 1. Base platform; 2. Lifting seat; 3. Receiving block; 4. Loose seat; 5. Loose milling assembly; 501. Milling box; 502. Tilting seat; 503. Tool holder; 504. Tool head; 505. Milling motor; 506. Tilting shaft; 507. Driving gear; 508. Tilting motor; 509. Tilting gear; 6. Curved frame; 7. Adjusting arm; 8. Locking knob; 9. Synchronous feedback module; 901. Tail stand; 902. Clamp; 903. Loose rod; 904. Return spring; 905. Suspension seat; 906. Inner slide; 907. Stand; 908. Bionic fabric layer; 909. Airbag tube; 910. Bidirectional push plate; 911. Functional spring; 912. Pressure sensor; 10. Stand; 11. Z-axis motor; 12. Z-axis lead screw; 13. Y-axis motor; 14. Y-axis lead screw; 15. Worktable; 16. Work box; 17. Rotary table; 18. Hydraulic cylinder; 19. Central seat; 20. Rotating sleeve; 21. Placement seat; 22. Fixing block; 23. Ring gear; 24. Rotary motor; 25. Rotary gear. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] The high-precision milling device for belt pulley processing disclosed in this invention is mainly applied to scenarios where the milling cutter of the current milling device has poor contact with the machining surface during processing.

[0033] Referring to Figures 1-10, a high-precision milling device for belt pulley processing includes a base 1, a lifting seat 2 above the base 1, a receiving block 3 fixedly connected to one side of the lifting seat 2, and a movable seat 4 fixedly connected to the other side of the receiving block 3. A movable milling assembly 5 is mounted on the movable seat 4. The movable milling assembly 5 includes a milling box 501, a tool holder 503 rotatably connected inside the milling box 501 via bearings, a tool head 504 fixedly connected to the lower end of the tool holder 503, and a milling motor 505 fixedly connected to the upper side of the milling box 501. The output shaft of the milling motor 505 is connected to a first transmission shaft via a first coupling. The other end is fixedly connected to the tool holder 503, and a flip seat 502 is fixedly connected to the outside of the milling box 501. A flip shaft 506 is provided on the flip seat 502. An installation hole is provided on the movable seat 4. The flip shaft 506 is movably connected to the installation hole of the movable seat 4. A driving gear 507 is fixedly connected to one end of the flip shaft 506. The driving gear 507 is located on the outside of the movable seat 4. A flip motor 508 is fixedly connected to the upper side of the receiving block 3. The output shaft of the flip motor 508 is connected to two transmission shafts through a second coupling. A flip gear 509 is fixedly connected to the other end of the second transmission shaft. The flip gear 509 meshes with the driving gear 507.

[0034] Specifically, during routine grinding operations, the milling motor 505 drives the tool holder 503 to rotate, which in turn drives the cutter head 504 to rotate and mill the burrs on the outside of the pulley. When it is necessary to process the bevel on the outside of the pulley, the tilting motor 508 can be started, which drives the tilting gear 509 to rotate the drive gear 507 and the tilting shaft 506, thereby causing the entire live milling assembly 5 to deflect precisely around the tilting shaft 506, adjusting the axis angle of the cutter head 504 so that it is perpendicular to the bevel surface of the pulley or reaches the optimal processing angle.

[0035] In specific application scenarios, the live milling assembly 5 uses precise angular deflection driven by a motor to enable the cutter head 504 to actively adapt to different angles of the workpiece's inclined surface, ensuring the optimal direction of the milling force and improving the surface quality of the irregularly shaped surface. Moreover, this method eliminates the cumbersome traditional method of repeatedly disassembling and flipping the workpiece to process different inclined surfaces. By actively adjusting the tool posture to replace workpiece repositioning, it eliminates the reference error caused by repeated clamping and fixing of the workpiece, ensuring the symmetry, coaxiality, and dimensional consistency of the processing of multiple inclined surfaces on the workpiece. It is particularly suitable for the mass production of high-precision pulleys.

[0036] Referring to Figures 2, 4, and 5, in a preferred embodiment, a bending frame 6 is fixedly connected to the outer side of the milling box 501. A convex shaft is provided at the lower end of the bending frame 6, and an adjusting arm 7 is sleeved on the outside of the convex shaft. A threaded hole is provided on the convex shaft of the bending frame 6, and a locking knob 8 is rotatably connected to the inside of the threaded hole through the inner wall thread. A protrusion is provided on the lower side of the locking knob 8, and the locking knob 8 can be tightened to press the adjusting arm 7 into the bending frame 6.

[0037] By using the locking knob 8 to tighten and lock the position, the angle of the adjusting arm 7 can be steplessly adjusted and quickly locked, providing flexible layout capabilities and a stable locking effect, making it easier for the synchronous feedback module 9 to find the optimal monitoring position.

[0038] Referring to Figures 2, 4, 5 and 6, in a preferred embodiment, a synchronous feedback module 9 is provided at the other end of the adjusting arm 7;

[0039] The synchronous feedback module 9 includes a tail section 901 and a suspension seat 905. A clamp 902 is provided on the front side of the tail section 901. The clamp 902 is a horizontal U-shaped frame. The suspension seat 905 is fixedly connected to the U-shaped frame of the clamp 902. The tail section 901 has four symmetrical sliding holes. Four movable rods 903 are fixedly connected to the side of the clamp 902 near the tail section 901. The four movable rods 903 are slidably connected to the sliding holes of the tail section 901. A return spring 904 is fixedly connected between the clamp 902 and the tail section 901.

[0040] The fit between the movable rod 903 and the sliding hole ensures the smoothness and straightness of the movement of the clamp 902; the return spring 904 provides a constant and gentle contact force for the bionic fabric layer 908, enabling it to adapt to small changes in the workpiece diameter and always maintain effective contact, while its elastic buffering effect protects the module structure from accidental impacts.

[0041] The suspension seat 905 has vertically distributed slide tracks in the middle. An inner slide seat 906 is slidably connected inside the slide tracks. A standing box 907 is fixedly connected to the side of the inner slide seat 906 away from the clamp seat 902. A bionic fabric layer 908 is provided on the outside of the standing box 907. An airbag tube 909 is fixedly connected between the bionic fabric layer 908 and the standing box 907. A through hole is provided in the middle of the inner slide seat 906. A bidirectional push plate 910 is fixedly connected inside the through hole. Two symmetrical circular slots are provided on the suspension seat 905. A pressure sensor 912 is fixedly connected inside both circular slots. A functional spring 911 is fixedly connected between the bidirectional push plate 910 on the same side and the pressure sensor 912.

[0042] Specifically, after adjusting the position of the cutter head 504, loosen the locking knob 8 and adjust the position of the adjusting arm 7 so that the bionic fabric layer 908 contacts the outside of the pulley and is slightly squeezed; the air bladder tube 909 is filled with an appropriate amount of gas, which further enhances the flexibility and fit of the bionic fabric layer 908, enabling it to more sensitively capture minute surface undulations.

[0043] During the grinding process of the pulley rotation, under the elastic force of the return spring 904, the bionic cloth layer 908 will always maintain effective contact with the outside of the pulley: when the burrs on the outside of the pulley are ground smooth, the force state of the bionic cloth layer 908 is uniform, the position of the inner slide 906 is stable, and the readings of the two pressure sensors 912 are balanced and stable, and the system determines that the grinding of this area is complete; when the burrs on the outside of the pulley are not completely removed, the force state of the bionic cloth layer 908 will change due to the pull of the burrs, the inner slide 906 will move, the force of the functional spring 911 will change, and the readings of the pressure sensors 912 will show significant differences, and the system will determine that grinding needs to continue.

[0044] In specific application scenarios, the synchronous feedback module 9 can provide real-time feedback on the burr status of the pulley during the grinding process, thereby controlling the grinding operation of the pulley. This achieves real-time, closed-loop feedback of the processing status, effectively avoiding incomplete or over-grinding problems caused by operation based on experience, and significantly improving the consistency and reliability of processing quality.

[0045] Referring to Figures 1, 7, 8, and 9, in a preferred embodiment, the upper side of the base 1 is provided with two symmetrical transverse slide rails, and the upper side of the two transverse slide rails is slidably connected to the same upright 10. One side of the upright 10 is provided with two vertical slide rails, and the side of the lifting seat 2 away from the receiving block 3 is provided with two slide grooves. The lifting seat 2 is slidably connected to the two vertical slide rails of the upright 10, and the top of the upright 10 is fixedly connected to a Z-axis motor 11. The output shaft of the Z-axis motor 11 is connected to a Z-axis lead screw 12 through a coupling. The lifting seat 2 is provided with a vertical threaded through hole, and the Z-axis lead screw 12 is rotatably connected to the vertical threaded through hole of the lifting seat 2 through the outer wall thread.

[0046] The lower part of the stand 10 has a transverse threaded hole. A Y-axis motor 13 is fixedly connected to the base 1. The output shaft of the Y-axis motor 13 is connected to a Y-axis lead screw 14 through a coupling. The other end of the Y-axis lead screw 14 passes through the transverse threaded hole of the stand 10. The Y-axis lead screw 14 is rotatably connected to the transverse threaded hole of the stand 10 through the outer wall thread.

[0047] Specifically, the adjustment of the stand 10: the Y-axis motor 13 drives the Y-axis lead screw 14 to rotate, and the stand 10 moves on the base 1 towards the pulley;

[0048] Adjustment of lifting seat 2: Z-axis motor 11 drives Z-axis lead screw 12 to rotate, and lifting seat 2 moves down until the cutter head 504 contacts the outside of the pulley.

[0049] Referring to Figures 1, 7, and 10, in a preferred embodiment, a workbench 15 is fixedly connected to the front side of the base 1, and a work box 16 is fixedly connected to the upper side of the workbench 15. The work box 16 has multiple windows, each of which is fixedly connected with tempered glass. A rotary table 17 is rotatably connected to the upper side of the workbench 15 via a bearing. A hydraulic cylinder 18 is fixedly connected to the upper side of the rotary table 17. A central seat 19 is fixedly connected to the telescopic end of the hydraulic cylinder 18. A rotating sleeve 20 is fixedly connected to the outer side of the central seat 19. A circular mounting hole is provided on the work box 16, and the rotating sleeve 20 is movably connected to the circular mounting hole of the work box 16.

[0050] The tempered glass windows on the work box 16 provide easy observation of the internal processing and also serve as a safety protection feature.

[0051] A placement seat 21 is fixedly connected to the upper side of the central seat 19. A threaded hole is opened in the middle of the placement seat 21. A fixing block 22 is rotatably connected to the threaded hole through the thread. A ring gear 23 is fixedly connected to the lower side of the rotary table 17. A rotary motor 24 is fixedly connected inside the work box 16. The output shaft of the rotary motor 24 is connected to a rotating shaft through a coupling. The lower end of the rotating shaft is rotatably connected to the upper side of the worktable 15 through a bearing. A rotary gear 25 is fixedly connected to the outside of the rotating shaft. The rotary gear 25 and the ring gear 23 are meshed through tooth grooves.

[0052] Specifically, the pulley is fixed as follows: First, remove the fixing block 22, place the pulley on the placement seat 21, then install the fixing block 22 and tighten it with a wrench to press the pulley into place 21.

[0053] Grinding operation: The rotary motor 24 drives the rotary gear 25 to mesh with the ring gear 23, the rotary table 17 rotates, and the pulley on the placement seat 21 rotates at a constant speed.

[0054] A high-precision milling method for belt pulley machining, using a high-precision milling apparatus for belt pulley machining as described above, includes the following steps:

[0055] Step 1: Use the fixing block 22 to fix the pulley to the placement seat 21 (first remove the fixing block 22, place the pulley on the placement seat 21, then install the fixing block 22 and tighten it with a wrench to press the pulley into place 21).

[0056] Step 2: First, adjust the stand 10 according to the grinding position of the external burrs on the pulley (the Y-axis motor 13 drives the Y-axis lead screw 14 to rotate, and the stand 10 moves towards the pulley on the base 1). Then, simultaneously adjust the lifting seat 2 so that the cutter head 504 is in contact with the grinding position (the Z-axis motor 11 drives the Z-axis lead screw 12 to rotate, and the lifting seat 2 moves down until the cutter head 504 contacts the outside of the pulley). Then, adjust the adjusting arm 7 so that the bionic cloth layer 908 contacts the outside of the pulley (after completing the adjustment of the cutter head 504 position, loosen the locking knob 8 and adjust the position of the adjusting arm 7 so that the bionic cloth layer 908 contacts the outside of the pulley and is slightly squeezed).

[0057] Step 3: Start the device (rotary motor 24 drives rotary gear 25 to mesh with ring gear 23, rotary table 17 rotates, and pulley on placement seat 21 rotates at a constant speed), the live milling assembly 5 grinds the external burrs of the pulley (milling motor 505 drives tool holder 503 to rotate, and tool head 504 rotates to grind the external burrs of the pulley), at the same time, the synchronous feedback module 9 provides real-time feedback on the external state of the pulley, thereby controlling the grinding process (during the pulley rotation grinding process, under the elastic force of return spring 904, bionic cloth layer 908...). It will always maintain effective contact with the outside of the pulley: when the burrs on the outside of the pulley are polished smooth, the bionic cloth layer 908 is under uniform force, the inner slide 906 is in a stable position, and the readings of the two pressure sensors 912 are balanced and stable, and the system determines that the polishing of this area is complete; when the burrs on the outside of the pulley are not completely removed, the bionic cloth layer 908 will change its force due to the pull of the burrs, the inner slide 906 will move, the force on the functional spring 911 will change, and the readings of the pressure sensors 912 will show significant differences, and the system will determine that polishing needs to continue.

[0058] Step 4: Adjust the live milling assembly 5 according to the angle of the outer bevel of the pulley (when the outer bevel of the pulley needs to be ground, based on the alignment in Step 2, start the tilting motor 508, drive the tilting gear 509 to drive the traction gear 507 and the tilting shaft 506 to rotate, so that the entire live milling assembly 5 deflects around the tilting shaft 506, and precisely adjust the axis angle of the cutter head 504 so that it is perpendicular to the bevel surface of the pulley or reaches the optimal processing angle), so that the cutter head 504 meets the bevel that needs to be ground, then adjust the adjusting arm 7, and then start the device to perform the bevel burr grinding operation.

[0059] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-precision milling device for machining pulleys, comprising a base table, characterized in that, A lifting seat is provided above the base platform. A receiving block is fixedly connected to one side of the lifting seat, and a movable seat is fixedly connected to the other side of the receiving block. A movable milling assembly is provided on the movable seat. The movable milling assembly includes a milling box. A tool holder is movably connected inside the milling box. A cutter head is fixedly connected to the lower end of the tool holder. A milling motor is fixedly connected to the upper side of the milling box. The output shaft of the milling motor is connected to a first transmission shaft through a first coupling. The other end of the first transmission shaft is fixedly connected to the tool holder. A tilting seat is fixedly connected to the outside of the milling box. A tilting shaft is provided on the tilting seat. An installation hole is opened on the movable seat. The tilting shaft is movably connected to the installation hole of the movable seat. A driving gear is fixedly connected to one end of the tilting shaft. The driving gear is located outside the movable seat. A tilting motor is fixedly connected to the upper side of the receiving block. The output shaft of the tilting motor is connected to a second transmission shaft through a second coupling. A tilting gear is fixedly connected to the other end of the second transmission shaft. The tilting gear meshes with the driving gear. A bending arc frame is fixedly connected to the outside of the milling box. A convex shaft is provided at the lower end, and an adjusting arm is sleeved on the outside of the convex shaft; a synchronous feedback module is provided at the other end of the adjusting arm; the synchronous feedback module includes a tail section and a suspension seat, a clamp is provided on the front side of the tail section, the clamp is a transverse U-shaped frame, the suspension seat is fixedly connected to the U-shaped frame of the clamp, and four symmetrical sliding holes are opened on the tail section, four movable rods are fixedly connected to the side of the clamp near the tail section, and the four movable rods are respectively movably connected to the sliding holes of the tail section; a return spring is fixedly connected between the clamp and the tail section; the suspension... The seat has vertically distributed slides in the middle, and an inner slide is movably connected inside the slides. A vertical box is fixedly connected to the side of the inner slide away from the clamp. A bionic fabric layer is provided on the outside of the vertical box. An airbag tube is fixedly connected between the bionic fabric layer and the vertical box. A perforation is provided in the middle of the inner slide, and a bidirectional push plate is fixedly connected inside the perforation. Two symmetrical circular slots are provided on the suspension seat. Pressure sensors are fixedly connected inside both circular slots. A functional spring is fixedly connected between the bidirectional push plate on the same side and the pressure sensor.

2. The high-precision milling device for belt pulley machining according to claim 1, characterized in that, The convex shaft of the bending frame has a threaded hole, and a locking knob is rotatably connected inside the threaded hole through the inner wall thread. The lower side of the locking knob is provided with a protrusion, and the locking knob can be tightened to press the adjusting arm into the bending frame.

3. A high-precision milling device for belt pulley machining according to claim 2, characterized in that, The upper side of the base is provided with two symmetrical horizontal slide rails. The upper side of the two horizontal slide rails is movably connected to the same upright. One side of the upright is provided with two vertical slide rails. The side of the lifting seat away from the receiving block is provided with two sliding grooves. The lifting seat is movably connected to the two vertical slide rails of the upright. The top of the upright is fixedly connected to a Z-axis motor. The output shaft of the Z-axis motor is connected to a Z-axis lead screw through a coupling. The lifting seat is provided with a vertical threaded through hole. The Z-axis lead screw is rotatably connected to the vertical threaded through hole of the lifting seat through the outer wall thread.

4. A high-precision milling device for belt pulley machining according to claim 3, characterized in that, The lower part of the stand has a transverse threaded hole, and a Y-axis motor is fixedly connected to the base. The output shaft of the Y-axis motor is connected to a Y-axis lead screw through a coupling, and the other end of the Y-axis lead screw passes through the transverse threaded hole of the stand. The Y-axis lead screw is rotatably connected to the transverse threaded hole of the stand through the outer wall thread.

5. A high-precision milling device for belt pulley machining according to claim 4, characterized in that, A workbench is fixedly connected to the front side of the base platform, and a work box is fixedly connected to the upper side of the workbench. The work box has multiple windows, each with tempered glass fixedly connected inside. A rotary table is movably connected to the upper side of the workbench, and a hydraulic cylinder is fixedly connected to the upper side of the rotary table. A central seat is fixedly connected to the telescopic end of the hydraulic cylinder, and a rotating sleeve is fixedly connected to the outer side of the central seat. A circular mounting hole is provided on the work box, and the rotating sleeve is movably connected to the circular mounting hole of the work box.

6. A high-precision milling device for belt pulley machining according to claim 5, characterized in that, A placement seat is fixedly connected to the upper side of the central base. A threaded hole is opened in the middle of the placement seat. A fixing block is rotatably connected to the threaded hole through the thread. A ring gear is fixedly connected to the lower side of the rotary table. A rotary motor is fixedly connected inside the work box. The output shaft of the rotary motor is connected to a rotating shaft through a coupling. The lower end of the rotating shaft is movably connected to the upper side of the work table. A rotary gear is fixedly connected to the outside of the rotating shaft. The rotary gear and the ring gear mesh through tooth grooves.

7. A high-precision milling method for belt pulley machining, using a high-precision milling apparatus for belt pulley machining as described in claim 6, characterized in that, The process includes the following steps: Step 1: Fix the pulley to the mounting base using a fixing block; Step 2: Adjust the stand according to the grinding position of the external burrs on the pulley, then simultaneously adjust the lifting base to make the cutter head fit the grinding position, and then adjust the adjusting arm to make the bionic fabric layer contact the outside of the pulley; Step 3: Start the device, and the live milling component grinds the external burrs on the pulley. At the same time, the synchronous feedback module provides real-time feedback on the external state of the pulley, thereby controlling the grinding process; Step 4: Adjust the live milling component according to the bevel angle on the outside of the pulley to make the cutter head meet the bevel to be ground, then adjust the adjusting arm, and then start the device to perform the bevel burr grinding operation.

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