A milling clamping tool for rotary parts

Abstract

This invention relates to a milling clamping fixture for rotary parts, belonging to the field of milling clamping fixture technology. It solves the technical problems of cumbersome replacement of bar stock clamps and inconvenient adjustment of clamping fixture positions. The fixture includes a support, a cavity, and positioning holes. A fixing ring is fixedly connected to one side of the support, and multiple clamping rings are arranged inside the fixing ring. Multiple clamping cylinders are fixedly connected to one side of the cavity, and each clamping cylinder is connected to a pushing ring that cooperates with the clamping rings. Multiple outer sleeves are arranged on the fixing ring, and an inner sleeve is slidably connected inside each outer sleeve. A tension spring is provided between the outer sleeve and the inner sleeve. This invention modularly installs the clamping rings through the outer sleeves, inner sleeves, threaded columns, and screws, achieving rapid assembly and disassembly of the clamping rings. This allows operators to flexibly change the clamping rings of corresponding specifications according to the processing requirements of different bar stock.

Description

Technical Field

[0001] This invention relates to the field of milling clamping fixture technology, specifically a milling clamping fixture for rotary parts. Background Technology

[0002] Rotary parts are one of the most basic and common types of parts in mechanical manufacturing. Their core characteristic is that they are mainly composed of geometric bodies (such as cylinders, cones, threads, or various annular grooves) that rotate around the same axis. For example, the most common cylindrical bar stock requires clamping fixtures to hold and assist in milling when milling its surface.

[0003] The V-blocks and clamping rings in existing clamping fixtures are mostly fixed structures, which are extremely inconvenient to disassemble and replace. When it is necessary to process bars of different diameters or lengths, operators need to spend a lot of time disassembling and adjusting the entire set of clamping components. This not only increases downtime but also makes it difficult to quickly adapt to the production needs of multiple types of bars, resulting in a decrease in overall processing efficiency and failing to meet the requirements of flexible production.

[0004] In addition, when clamping bar stock, a hoisting structure is usually used to suspend the bar stock into the clamping fixture. In the actual milling process, if it is necessary to adjust the machining position on the bar stock, the operator still needs to rely on the hoisting equipment to lift the bar stock again to adjust its axial position or angle. This is not only cumbersome and inefficient, but also prone to causing one end of the bar stock to lift up and the other end to get stuck in the positioning hole due to the offset of the lifting point or the shaking of the hoisting during the lifting process. This can cause scratches or crush damage to the precision surface of the bar stock, affecting the machining quality.

[0005] Based on this, the present invention provides a milling clamping fixture for rotary parts to solve the above problems. Summary of the Invention

[0006] In view of the above situation and to overcome the defects of the prior art, the present invention provides a milling clamping fixture for rotary parts. The present invention has a novel structure and ingenious design, and effectively solves the technical problems of cumbersome replacement of bar stock clamps and inconvenient adjustment of clamping fixture position.

[0007] A milling clamping fixture for rotary parts includes a support, a cavity, and a positioning hole. A fixing ring is fixedly connected to one side of the support, and multiple clamping rings are provided inside the fixing ring. Multiple clamping cylinders are fixedly connected to one side of the cavity, and the clamping cylinders are connected to push rings that cooperate with the clamping rings. Multiple outer sleeves are provided on the fixing ring, and an inner sleeve is slidably connected inside the outer sleeve. A tension spring is provided between the outer sleeve and the inner sleeve.

[0008] Preferably, the fixing ring has multiple fixing grooves, one side of the support has multiple rotating grooves that match the fixing grooves, each fixing groove has an outer sleeve, each clamping ring has a limit groove, one side of each limit groove is fixedly connected to a fixing seat, and one side of each outer sleeve is threaded to three fixing seats via a threaded post.

[0009] Preferably, each of the inner sleeves is fixedly connected to one side with a screw, and the screws pass through the corresponding fixing grooves respectively.

[0010] Preferably, each of the plurality of screws is threaded with a fixing bolt placed in a rotating groove.

[0011] Preferably, two rollers are slidably and rotatably mounted in the cavity, and two rotating idlers are fixedly connected to each roller. Two adjustable and rotatable transmission idlers are provided in the cavity.

[0012] Preferably, the rotating idler is equipped with a sliding component, and the transmission idler is equipped with an adjusting component, with the sliding component and the adjusting component correspondingly cooperating.

[0013] Preferably, the sliding assembly includes a lower sliding groove, a lower sliding seat, a roller bracket, a side support seat, a lower push rod, a side sliding seat, and a guide groove.

[0014] Preferably, the adjustment assembly includes a side slide groove, a limiting slider, an upper push rod, a roller frame, a limiting bracket, and a limiting block.

[0015] Preferably, a base is fixedly connected to the bottom of the support, an air pipe interface is provided on one side of the support, and a lifting ring is fixedly connected to the top of the support.

[0016] The present invention has the following technical effects.

[0017] 1. This invention modularly installs the clamping ring using an outer sleeve, inner sleeve, threaded post, and screw, enabling quick assembly and disassembly of the clamping ring. This allows operators to flexibly replace the clamping ring with the appropriate specification according to the processing requirements of different bar stock. At the same time, when the clamping part of a single clamping ring is worn or damaged, the damaged part can be replaced individually without replacing the whole ring, significantly reducing maintenance costs.

[0018] 2. This invention uses a clamping cylinder, a pushing ring, and a tension spring to drive multiple clamping rings to converge towards the center simultaneously, achieving centering and clamping of the bar stock. After milling, the clamping rings automatically spring back to their original position, preparing for the next clamping operation. This effectively improves the efficiency of clamping and releasing, ensuring the smoothness of cyclic operations.

[0019] 3. This invention utilizes a lower sliding seat, a roller bracket, a roller shaft, and a rotating roller. The rotating roller stably supports and rotates the inserted bar stock, enabling flexible rotation and adjustment of the bar stock during processing. This facilitates multi-angle milling positioning. The lower push rod, upper push rod, roller bracket, and transmission roller provide stable support and precise axial transmission adjustment of the bar stock to meet the continuous feed requirements of the milling process. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the assembly structure of the support, fixing ring, fixing groove and rotating groove in this invention;

[0023] Figure 3 This is a schematic diagram of the assembly structure of the clamping ring, the pushing ring, and the clamping cylinder in this invention;

[0024] Figure 4 This is a schematic diagram of the assembly structure of the clamping ring, pushing ring, limiting groove and outer sleeve in this invention;

[0025] Figure 5 This is a schematic diagram of the assembly structure of the outer sleeve, inner sleeve, tension spring, and screw in this invention;

[0026] Figure 6 This is a schematic diagram of the assembly structure of the clamping ring and the fixing seat in this invention.

[0027] Figure 7 This is a schematic diagram of the assembly structure of the lower sliding seat, roller bracket, roller shaft and rotating roller in this invention;

[0028] Figure 8 This is a schematic diagram of the assembly structure of the support and guide groove in this invention;

[0029] Figure 9 This is a schematic diagram of the assembly structure of the lower push rod, the side sliding seat, and the upper push rod in this invention;

[0030] Reference numerals: 1. Base; 2. Support; 3. Air pipe interface; 4. Lifting ring; 5. Positioning hole; 6. Cavity; 7. Fixing ring; 8. Fixing groove; 9. Rotating groove; 10. Clamping ring; 11. Pushing ring; 12. Mounting groove; 13. Clamping cylinder; 14. Limiting groove; 15. Outer sleeve; 16. Threaded post; 17. Inner sleeve; 18. Tension spring; 19. Screw; 20. Fixing bolt; 21. Fixing seat; 22. Sliding end 23. Groove; 24. Double-acting cylinder; 25. Lower sliding seat; 26. Roller bracket; 27. Roller shaft; 28. Rotating roller; 29. ​​Side support seat; 30. Lower push rod; 31. Side sliding seat; 32. Side sliding groove; 33. Limiting slider; 34. Upper push rod; 35. Roller frame; 36. Transmission roller; 37. Limiting bracket; 38. Limiting block; 39. Guide groove; 40. Left ball bearing; 41. Guide cylinder; 42. Right ball bearing. Detailed Implementation

[0031] The foregoing and other technical contents, features and effects of the present invention are described in conjunction with the appendix below. Figures 1 to 9 The detailed description of the embodiments will make this clear. All references to the following embodiments are made with reference to the accompanying drawings.

[0032] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0033] This invention relates to a milling clamping fixture for rotating parts, particularly for milling bar stock. It includes a support 2, a cavity 6 on the support 2, and positioning holes 5 on both sides of the cavity 6. A fixing ring 7 is fixedly connected to one side of the support 2. The inner diameter of the fixing ring 7 is the same as the inner diameter of the positioning hole 5. The fixing ring 7 and the positioning hole 5 are correspondingly fitted. Three clamping rings 10 are provided inside the fixing ring 7. The three clamping rings 10 are evenly distributed inside the fixing ring 7 and fit together to form a circle.

[0034] Three mounting slots 12 are provided on one side of the cavity 6 near the fixing ring 7. The three mounting slots 12 are evenly distributed circumferentially on one side of the cavity 6 with the center of the positioning hole 5 as the center. The three mounting slots 12 are all cylindrical in shape. A clamping cylinder 13 is fixedly connected to one side of each of the three mounting slots 12. A pushing ring 11 is slidably connected in the positioning hole 5. The cross-sectional shape of the pushing ring 11 and the clamping ring 10 is trapezoidal. The inclined surface of the trapezoid cooperates to push the clamping ring 10. One side of the pushing ring 11 is fixedly connected to the output end of the three clamping cylinders 13, and the other side of the pushing ring 11 cooperates with the three clamping rings 10.

[0035] The fixing ring 7 is provided with multiple outer sleeves 15, and an inner sleeve 17 is slidably connected inside the outer sleeve 15. Each of the three inner sleeves 17 is provided with a tension spring 18. One end of each of the three tension springs 18 is fixedly connected to the inner wall of the three inner sleeves 17, and the other end of each of the three tension springs 18 is fixedly connected to the inner wall of the three outer sleeves 15.

[0036] More specifically:

[0037] The fixed ring 7 has three fixed grooves 8, all of which are cylindrical in shape and are evenly distributed on the fixed ring 7. The support 2 has three rotating grooves 9 on one side, all of which are semi-cylindrical in shape. The three rotating grooves 9 are evenly distributed circumferentially on one side of the support 2 with the positioning hole 5 as the center. The three rotating grooves 9 correspond to and cooperate with the three fixed grooves 8 respectively.

[0038] Each of the three fixed slots 8 is provided with an outer sleeve 15, and each of the three clamping rings 10 is provided with a limiting slot 14. Each of the three limiting slots 14 is fixedly connected to a fixed seat 21 on one side, and each of the three outer sleeves 15 is fixedly connected to a threaded post 16 on one side. Each of the three outer sleeves 15 is threadedly connected to the three fixed seats 21 through the threaded post 16.

[0039] Each of the three inner sleeves 17 is fixedly connected to a screw 19 on the side away from the outer sleeve 15, and the three screws 19 pass through the three fixing slots 8 respectively.

[0040] Each of the three screws 19 is threaded with a fixing bolt 20, and the three fixing bolts 20 are located in the three rotating slots 9 respectively.

[0041] In this embodiment, when installing the clamping ring 10, the outer sleeve 15 is first installed on the fixing seat 21 of the clamping ring 10 through the threaded post 16. Then, the clamping ring 10 with the outer sleeve 15 installed is placed in the fixing ring 7, and the outer sleeve 15 passes through the fixing groove 8 to limit the outer sleeve 15. The screw 19 on the other side of the inner sleeve 17 passes out from the fixing groove 8 and is located in the rotating groove 9. At this time, the worker puts the fixing bolt 20 into the rotating groove 9 and tightens it on the screw 19, thereby fixing the inner sleeve 17 to one side of the fixing groove 8.

[0042] After all three clamping rings 10 are installed, the clamping cylinder 13 is activated to drive the push ring 11 to move toward the clamping ring 10. By pushing the inclined surface on one side of the push ring 11, the three clamping rings 10 are pushed to move closer together, thereby clamping the bar stock placed therein for subsequent milling operations.

[0043] When the pushing ring 11 pushes the three clamping rings 10 closer together, the three outer sleeves 15 slide on the three inner sleeves 17 respectively, and stretch the tension spring 18 connected between the outer sleeve 15 and the inner sleeve 17, so that the outer sleeve 15 generates a reverse force. When it is necessary to release the bar stock, the clamping cylinder 13 drives the pushing ring 11 to move away from the clamping ring 10. The pushing ring 11 no longer applies a supporting force to the clamping ring 10. At this time, the outer sleeve 15 is only subjected to the tension of the tension spring 18 and slides towards the inner sleeve 17 in the fixing groove 8, thereby driving the three clamping rings 10 away from each other, realizing the release of the bar stock, which makes it easier for the staff to take out the bar stock. When a single clamping ring 10 is damaged, it is easy to disassemble and replace, which greatly saves costs and also makes it easy to replace the fixture without replacing the whole thing.

[0044] As one embodiment, the rotating idler 27 is equipped with a sliding component, and the transmission idler 35 is equipped with an adjusting component, with the sliding component and the adjusting component correspondingly cooperating.

[0045] The sliding assembly includes a lower sliding groove 22, a lower sliding seat 24, a roller bracket 25, a side support seat 28, a lower push rod 29, a side sliding seat 30, and a guide groove 38.

[0046] The adjustment assembly includes a side slide groove 31, a limit slider 32, an upper push rod 33, a roller frame 34, a limit bracket 36, and a limit block 37.

[0047] Two sets of guide grooves 38 are provided on both sides of the cavity 6, with two in each set. The guide grooves 38 are arc-shaped, and the two guide grooves 38 on one side of the cavity 6 and the two guide grooves 38 on the other side of the cavity 6 are matched one-to-one.

[0048] Roller shafts 26 are slidably connected to the two guide grooves 38 on both sides of the cavity 6. The two ends of the roller shafts 26 are slidably connected to the guide grooves 38 on both sides of the cavity 6. Two rotating idlers 27 are fixedly connected to each roller shaft 26. A motor is provided at one end of each roller shaft 26 to drive the rotating idlers 27. Two rotatable transmission idlers 35 are provided inside the cavity 6. A motor is provided at one end of each transmission idler 35 to drive the transmission idler 35. The transmission idlers 35 are double-conical in shape. The two transmission idlers 35 cooperate with each other and are located between the two rotating idlers 27 on the roller shaft 26.

[0049] In this embodiment, the bar stock is lifted by the hoisting structure and placed on the support 2 through the positioning hole 5. The two roller shafts 26 slide towards each other along the guide groove 38. Guided by the guide groove 38, they move towards the center of the bar stock until the rotating support roller 27 installed on the roller shaft 26 contacts the bottom of the bar stock and lifts it smoothly. Then, the motor at one end of the roller shaft 26 drives the roller shaft 26 and the rotating support roller 27 to rotate synchronously. The friction force drives the bar stock to rotate circumferentially, thereby adjusting the milling angle. When it is necessary to adjust the axial position of the bar stock, the rotating support roller 27 descends and disengages from the bar stock. At this time, the transmission support rollers 35 on both sides rotate, so that one side contacts the bottom of the bar stock and lifts it. The side roller surface of the transmission support roller 35 contacts the outer wall of the bar stock. The motor at one end of the transmission support roller 35 drives it to rotate synchronously. The axial friction force generated by the side contact drives the bar stock to move smoothly laterally, thereby adjusting the axial processing position of the bar stock to meet the milling requirements of different processes.

[0050] It should be noted that the motors installed at one end of the rotating idler 27 and the transmission idler 35 are existing technologies and therefore are not marked. The motors are connected to a power supply and a controller.

[0051] A detailed embodiment of the sliding component and the adjusting component is now provided to ensure that the embodiment is fully disclosed:

[0052] The sliding component can be:

[0053] The bottom of the cavity 6 is provided with a downward groove 22, which is rectangular. A bidirectional cylinder 23 is fixedly connected inside the downward groove 22. The bidirectional cylinder 23 is fixed at the center of the downward groove 22. Two lower sliding seats 24 are slidably connected inside the downward groove 22. The lower half of the two lower sliding seats 24 has the same shape as the downward groove 22. The lower half of the two lower sliding seats 24 slides inside the downward groove 22. The two lower sliding seats 24 are fixedly connected to the two output ends of the bidirectional cylinder 23. The top of each of the two lower sliding seats 24 is rotatably connected to a roller bracket 25. Two roller shafts 26 are rotatably connected to the top of the two roller brackets 25.

[0054] When it is necessary to rotate and adjust the bar stock, the two output ends of the bidirectional cylinder 23 are synchronously contracted as power to drive the two lower sliding seats 24 to slide in the lower sliding groove 22 and move closer to each other. As the lower sliding seats 24 move, the roller bracket 25 on them rotates and cooperates, pushing the two roller shafts 26 to slide synchronously upward along the guide groove 38, thereby driving the rotating roller 27 to lift smoothly and stably lift the bar stock placed on it. This can be used to coordinate with the subsequent rotation and adjustment of the bar stock's milling position.

[0055] During the milling process, the rotating roller 27 can also be made to contact the bar stock. At this time, without the rotating roller 27 rotating, the rotating roller 27 only provides auxiliary support for the bar stock, reducing the internal stress generated by the bar stock during the milling process.

[0056] The adjusting component can be:

[0057] On one side of each of the two lower sliding seats 24 away from each other, a side support seat 28 is fixedly connected. On each of the two side support seats 28, a lower push rod 29 is rotatably connected. At the other ends of the two lower push rods 29, a side sliding seat 30 is rotatably connected. On each of the two side sliding seats 30, an upper push rod 33 is rotatably connected. At the other ends of the two upper push rods 33, a roller support 34 is rotatably connected. The roller support 34 is in the shape of a "C". Two driving rollers 35 are respectively rotatably connected to the two roller supports 34.

[0058] On the front and rear sides of the cavity 6, side sliding grooves 31 are opened. The side sliding grooves 31 are rectangular. On one side of each of the two side sliding seats 30, a limiting slider 32 is fixedly connected. The two limiting sliders 32 are respectively slidably connected in the two side sliding grooves 31. On the top of the two side sliding grooves 31, a limiting bracket 36 is fixedly connected. On one side of each of the two roller supports 34 away from each other, a limiting block 37 is fixedly connected. The two limiting blocks 37 are respectively rotatably connected to the two limiting brackets 36.

[0059] When the two output ends of the double-acting cylinder 23 contract synchronously, the two lower sliding seats 24 approach each other and slide in the lower sliding groove 22, driving the side support seats 28 on the two lower sliding seats 24 to approach each other. Furthermore, the lower push rods 29 installed on the two side support seats 28 are rotationally coordinated, pulling the side sliding seats 30 in the two side sliding grooves 31. The two side sliding seats 30 slide down synchronously in the two side sliding grooves 31, and at the same time, driving the two upper push rods 33 to pull the roller support 34, causing the limiting blocks 37 on one side of the two roller supports 34 to rotate around the connection position on the limiting bracket 36. Finally, the bottoms of the two driving rollers 35 move away from each other, avoiding affecting the rotation of the rotating roller 27 to lift the bar stock.

[0060] When the lateral position of the bar needs to be adjusted, the two output ends of the bidirectional cylinder 23 extend synchronously, causing the two lower sliding seats 24 to slide in the lower sliding groove 22 and move away from each other. At this time, the two roller shafts 26 slide in the two guide grooves 38 respectively, causing the rotating idler roller 27 to descend. Simultaneously, as the two lower sliding seats 24 move away from each other, the two side sliding seats 30 are pushed to slide and rise in the two side sliding grooves 31 by the lower push rods 29 on the two side support seats 28. Then, the two upper push rods 33 push the two idler roller frames 34 and the limiting block 37 on one side to rotate on the limiting bracket 36, so that the bottom of the transmission idler roller 35 on the two idler roller frames 34 approaches each other until it contacts the bar and lifts it up. Subsequently, the transmission idler roller 35 can be rotated by the motor on one side of the idler roller frame 34 to adjust the lateral movement of the bar.

[0061] As an example, the bottom of the support 2 is fixedly connected to the base 1, the side of the support 2 is provided with the air pipe interface 3, the top of the support 2 is fixedly connected to the lifting ring 4, the cavity 6 is provided with left ball bearings 39 distributed circumferentially with the positioning hole 5 as the center, the positioning hole 5 on the side of the support 2 away from the fixing ring 7 is provided with the guide cylinder 40, and the guide cylinder 40 is provided with right ball bearings 41 distributed circumferentially with the guide cylinder 40 as the center.

[0062] In this embodiment, the device can be easily installed on a milling machine via the base 1. An air pipe is connected to the air pipe interface 3, and the air pipe is connected to an air compressor to achieve air supply and exhaust, thereby providing drive for the clamping cylinder 13 and the bidirectional cylinder 23. In addition, the lifting ring 4 facilitates the lifting and moving of the support 2 by the operator.

[0063] Working principle of this invention:

[0064] When installing the clamping ring 10, place the clamping ring 10 inside the fixing ring 7, insert the outer sleeve 15 on one side into the fixing groove 8, and at the same time, the screw 19 on one side of the inner sleeve 17 passes through the fixing groove 8 and is located in the rotating groove 9. Tighten the screw 19 with the fixing bolt 20 to fix the inner sleeve 17. Then, the clamping cylinder 13 pushes the clamping rings 10 closer together to clamp the bar. After the milling is completed, the clamping cylinder 13 drives the clamping rings 10 to move in the opposite direction. With the help of the tension springs 18 set in the outer sleeve 15 and the inner sleeve 17, the clamping rings 10 are pulled apart, so that the three clamping rings 10 move away from each other and the clamped bar is released.

[0065] In use, the operator first lifts the bar stock to be milled using the hoisting structure and places it in the positioning hole 5 of the support 2, so that the bar stock passes completely through the support 2. When it is necessary to adjust the milling position of the bar stock surface, the bar stock is released, the output end of the bidirectional cylinder 23 shortens, and drives the two lower sliding seats 24 to move closer to each other. With the cooperation of the roller bracket 25, the two rotating rollers 27 rise and contact the bar stock, lifting it up. Then, the motor at one end of the rotating roller 27 drives the rotating roller 27 to rotate, thereby driving the bar stock to rotate and adjust.

[0066] When the bar stock needs to be adjusted for transverse milling, the bar stock is released, the output end of the bidirectional cylinder 23 extends, driving the two rotating rollers 27 to descend and detach from the bar stock. At the same time, the lower sliding seat 24 rises. Through the cooperation of the upper push rod 33, the two roller frames 34 are pushed to rotate synchronously on the two limit brackets 36 with the help of the two limit blocks 37. This causes one side of the two transmission rollers 35 to contact the bar stock and lift it up. At this time, the motor on one side of the transmission roller 35 drives the transmission roller 35 to rotate, driving the bar stock to move laterally.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A milling clamping fixture for rotary parts, characterized in that, Includes a support (2), a cavity (6), and a positioning hole (5). A fixing ring (7) is fixedly connected to one side of the support (2). The inner diameter of the fixing ring (7) is the same as the inner diameter of the positioning hole (5). The fixing ring (7) and the positioning hole (5) are correspondingly matched. Three clamping rings (10) are provided inside the fixing ring (7). The three clamping rings (10) are evenly distributed inside the fixing ring (7) and are matched to form a circle. Three mounting grooves (12) are opened on the side of the cavity (6) near the fixing ring (7). The three mounting grooves (12) are in the cavity. (6) is evenly distributed circumferentially around the center of the positioning hole (5) on one side. Each of the three mounting slots (12) is fixedly connected to a clamping cylinder (13). A push ring (11) is slidably connected inside the positioning hole (5). The cross-sectional shape of the push ring (11) and the clamping ring (10) is trapezoidal. The inclined surface of the trapezoid pushes the clamping ring (10). One side of the push ring (11) is fixedly connected to the output end of the three clamping cylinders (13). The other side of the push ring (11) is matched with the three clamping rings (10). The fixed ring (7) is provided with multiple fixed grooves (8), and the support (2) is provided with multiple rotating grooves (9) that match the fixed grooves (8) on one side. Each of the multiple fixed grooves (8) is provided with an outer sleeve (15). An inner sleeve (17) is slidably connected inside the outer sleeve (15), and a tension spring (18) is provided between the outer sleeve (15) and the inner sleeve (17). Multiple clamping rings (10) are provided with limit grooves (14), and a fixed seat (21) is fixedly connected to one side of each of the multiple limit grooves (14). One side of each of the multiple outer sleeves (15) is threaded to the three fixed seats (21) via a threaded post (16). Each of the inner sleeves (17) is fixedly connected to one side with a screw (19), and the screws (19) pass through the corresponding fixing grooves (8). Each of the screws (19) is threaded with a fixing bolt (20) placed in a rotating groove (9); Start the clamping cylinder (13) to drive the push ring (11) to move towards the clamping ring (10). Through the inclined surface on one side of the push ring (11), the three clamping rings (10) are pushed to move closer to each other, thereby clamping the bar placed therein. When it is necessary to loosen the bar stock, the clamping cylinder (13) drives the push ring (11) to move away from the clamping ring (10). The push ring (11) no longer applies support force to the clamping ring (10). The outer sleeve (15) is only subjected to the tension of the tension spring (18) and slides in the fixing groove (8) towards the inner sleeve (17), thereby driving the three clamping rings (10) to move away from each other and realize the loosening of the bar stock. Two rollers (26) are slidably and rotatably installed inside the cavity (6). Two rotating rollers (27) are fixedly connected to each of the two rollers (26). Two adjustable and rotatable transmission rollers (35) are provided inside the cavity (6).

2. The milling clamping fixture for rotary parts according to claim 1, characterized in that, The rotating idler (27) is equipped with a sliding component, and the transmission idler (35) is equipped with an adjusting component. The sliding component and the adjusting component are correspondingly matched.

3. The milling clamping fixture for rotary parts according to claim 2, characterized in that, The sliding assembly includes a lower sliding groove (22), a lower sliding seat (24), a roller bracket (25), a side support seat (28), a lower push rod (29), a side sliding seat (30), and a guide groove (38).

4. The milling clamping fixture for rotary parts according to claim 3, characterized in that, The adjustment assembly includes a side slide groove (31), a limiting slider (32), an upper push rod (33), a roller frame (34), a limiting bracket (36), and a limiting block (37).

5. The milling clamping fixture for rotary parts according to claim 1, characterized in that, The bottom of the support (2) is fixedly connected to the base (1), the side of the support (2) is provided with an air pipe interface (3), and the top of the support (2) is fixedly connected to a lifting ring (4).

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