A turning clamping device for sleeve chamfering

Abstract

The present application belongs to the technical field of chamfering machining, and particularly relates to a turning machining clamping device for sleeve chamfering, which comprises a rack, an axial positioning mechanism, a main shaft rotating assembly and a cutter feeding mechanism, the main shaft rotating assembly is rotationally arranged on the rack, the axial positioning mechanism is arranged on the rack and the main shaft rotating assembly, and the cutter feeding mechanism is arranged on the inner wall of the rack. When the axial position of the sleeve workpiece is unknown, the position of the sleeve workpiece can be found through the axial movement of the step part, and the axial position of the cutter feeding mechanism is adjusted accordingly, so that the sleeve workpiece can be accurately chamfered without axial positioning.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of turning chamfering, and particularly relates to a turning clamping device for sleeve chamfering. BACKGROUND

[0002] The sleeve part is generally a rotary part installed on a shaft part, some of which have flanges at the ends, and some of which are straight sleeves. After the core feature processing of the sleeve is completed, the end part (especially the outer edge) generally needs to be chamfered and deburred to improve the appearance and reduce the probability of scratching the operator in the subsequent assembly process.

[0003] For the chamfering of the rotary part, the most commonly used method is turning processing, that is, the outer edge of the part is processed by gradually approaching the rotating part with a tool. During turning, the part is generally clamped by a three-jaw chuck. However, the three-jaw chuck only has the function of positioning the central axis, and cannot position the axial position of the part. Therefore, after the clamping of the turning part is completed, the machine tool is generally "zeroed" by the "tool setting" method. This step can be accepted when processing complex parts, but for the simple process of chamfering, the time occupied by "tool setting" may even exceed the processing itself. Therefore, it is necessary to optimize it. SUMMARY

[0004] In view of the above situation, since the lengths of workpieces of the same specification are equal, the present application proposes a technical solution that can sense the axial position of the part after clamping and automatically adjust the axial position of the tool. When the axial position of the sleeve workpiece is unknown, the step part of the axial movement can detect the position of the sleeve workpiece and simultaneously adjust the axial position of the tool feeding mechanism, thereby achieving the technical purpose of accurately chamfering without axial positioning of the sleeve workpiece.

[0005] Furthermore, through the rotational damping design of the damping sleeve, the phased driving of the abutting positioning shaft can be automatically realized under the condition of continuous rotation of the abutting screw, thereby simplifying the structure and automatically realizing the start-stop control of the abutting positioning shaft.

[0006] The technical scheme adopted by the present application is as follows: the present application proposes a turning clamping device for sleeve chamfering, which comprises a rack, an axial positioning mechanism, a main shaft rotating assembly and a tool feeding mechanism. The main shaft rotating assembly is rotatably arranged on the rack. The axial positioning mechanism is arranged on the rack and the main shaft rotating assembly. The tool feeding mechanism is arranged on the inner wall of the rack.

[0007] Furthermore, the main shaft rotation assembly includes a hollow transmission shaft, which is rotatably arranged on the side wall of the frame. The axial positioning mechanism includes a sliding positioning assembly and an abutment transmission assembly, which is rotatably arranged on the frame. The sliding positioning assembly includes an abutment positioning shaft and a sliding guide sleeve, which is fixed to the hollow transmission shaft. The abutment positioning shaft and the sliding guide sleeve are respectively provided with bosses and grooves that slide with each other, and one end of the abutment positioning shaft is provided with an array of steps with different diameters.

[0008] Steps of different diameters can match sleeve workpieces of different specifications. The technical effect of axial positioning is achieved by the step portion abutting against the sleeve workpiece. The abutting positioning shaft and the sliding guide sleeve rotate together with the three-jaw chuck, which can make the abutting step portions and the sleeve workpiece relatively stationary, thereby avoiding damage to the sleeve workpiece.

[0009] Preferably, the abutment transmission assembly includes a nut, an abutment screw and a translation plate, a damping sleeve is provided on the outside of the nut, the nut is rotatably arranged on the side wall of the frame through the damping sleeve, and threaded transmission is generated between the abutment screw and the nut, one end of the abutment screw is rotatably arranged in the translation plate, and the other end of the abutment positioning shaft is rotatably arranged in the translation plate.

[0010] There is resistance to the rotation of the damping sleeve in the frame. Before the step portion abuts against the sleeve workpiece, the abutment screw can change its own axial position by relative rotation with the nut; after the step portion abuts against the sleeve workpiece, the abutment positioning shaft cannot continue to move axially. At this time, the nut will rotate synchronously with the abutment screw and maintain the mutual abutment between the step portion and the sleeve workpiece.

[0011] Furthermore, the tool feeding mechanism includes a longitudinal module, an axial sliding assembly, a feed assembly and a tool adjustment assembly, the longitudinal module is arranged on the axial sliding assembly, the feed assembly is arranged on the axial sliding assembly, and the tool adjustment assembly is arranged on the feed assembly.

[0012] Preferably, the longitudinal module includes a feed motor, a driving bevel gear and a driven bevel gear, a feed screw is provided on the output shaft of the feed motor, the driving bevel gear is fixed to the feed screw, and the driven bevel gear is fixed to the abutting screw, and the driving bevel gear and the driven bevel gear are engaged for transmission.

[0013] The feed motor rotates the feed screw, which can push the longitudinal slider down while driving the abutment positioning shaft to move axially and approach the sleeve workpiece; since there is a large safety distance between the cutter head and the sleeve workpiece, the step portion has already abutted the edge of the sleeve workpiece and completed the axial positioning before the cutter head reaches the sleeve workpiece.

[0014] Furthermore, the axial sliding assembly includes a guide frame, a fixed plate, a sliding plate and a screw rotation bracket, the fixed plate is fixed to the inner wall of the frame, the sliding plate is slidably arranged on the fixed plate through a guide rail, the guide frame is fixed to the sliding plate, the feed motor is arranged on the guide frame, the screw rotation bracket is arranged below the sliding plate, and the abutting screw rotation is arranged in the screw rotation bracket.

[0015] Preferably, the feed assembly includes a longitudinal slider, a limit switch and a lifting frame. The longitudinal slider is slidably arranged on the slide rod of the guide frame. The longitudinal slider is provided with an internal thread threadedly connected to the feed screw. The limit switch is arranged on the guide frame. The height of the limit switch can be adjusted. The lifting frame is fixed to the side of the longitudinal slider.

[0016] As a further preferred embodiment of the present invention, the tool adjustment assembly includes a tool holder, a guide rail is provided on the lifting frame, the tool holder is slidably arranged on the guide rail, a manual screw is rotatably provided on the lifting frame, and an internal thread is provided in the tool holder that is threadably connected to the manual screw.

[0017] By rotating the manual screw, the relative positions of the tool holder and the step portion can be preset and adjusted according to the different specifications of the sleeve workpiece, thereby improving the applicability and practicality of this solution.

[0018] As a further preferred embodiment of the present invention, the tool adjustment assembly further includes a tool head, and the tool head is detachably mounted on the tool holder.

[0019] Furthermore, the spindle rotation assembly also includes a three-jaw chuck, a rotary bearing and a drive wheel. The rotary bearing is arranged between the hollow transmission shaft and the frame. The three-jaw chuck is fixed to one end of the hollow transmission shaft. A clamping block is slidingly provided on the three-jaw chuck, and the clamping block can clamp the sleeve workpiece when it is retracted. The drive wheel is arranged at the other end of the hollow transmission shaft, and the drive wheel is driven by an external motor.

[0020] The beneficial effects achieved by the present invention using the above structure are as follows:

[0021] (1) When the axial position of the sleeve workpiece is unknown, the present invention can detect the position of the sleeve workpiece through the axially moving step portion, and simultaneously adjust the axial position of the tool feed mechanism accordingly through the abutment transmission component, thereby achieving the technical purpose of accurate chamfering without the need for axial positioning of the sleeve workpiece.

[0022] (2) Steps of different diameters can match sleeve workpieces of different specifications. The technical effect of axial positioning is achieved by the step portion abutting against the sleeve workpiece. The abutting positioning shaft and the sliding guide sleeve rotate together with the three-jaw chuck, which can make the abutting step portion and the sleeve workpiece relatively stationary, thereby avoiding damage to the sleeve workpiece.

[0023] (3) There is resistance to the rotation of the damping sleeve in the frame. Before the step portion abuts against the sleeve workpiece, the abutting screw can change its own axial position by rotating relative to the nut. After the step portion abuts against the sleeve workpiece, the abutting positioning shaft cannot continue to move axially. At this time, the nut will rotate synchronously with the abutting screw and maintain the mutual abutment between the step portion and the sleeve workpiece.

[0024] (4) The feed motor rotates the feed screw, which can push the longitudinal slider down while driving the abutment positioning shaft to move axially and approach the sleeve workpiece; because there is a large safety distance between the cutter head and the sleeve workpiece, the step portion has already abutted the edge of the sleeve workpiece and completed the axial positioning before the cutter head reaches the sleeve workpiece.

[0025] (5) By rotating the manual screw, the relative positions of the tool holder and the step portion can be preset and adjusted according to the different specifications of the sleeve workpiece, thereby improving the scope of application and practicality of this solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional diagram of a turning clamping device for sleeve chamfering proposed by the present invention;

[0027] Figure 2 This is a front view of a turning clamping device for sleeve chamfering proposed by the present invention;

[0028] Figure 3 This is a left side view of a turning clamping device for sleeve chamfering proposed by the present invention;

[0029] Figure 4 A top view of a turning clamping device for sleeve chamfering proposed by the present invention;

[0030] Figure 5 for Figure 3 A cross-sectional view along the cutting line AA;

[0031] Figure 6 for Figure 3 A cross-sectional view along the cutting line BB;

[0032] Figure 7 for Figure 6 A partial enlarged view of point Ⅰ in the middle;

[0033] Figure 8 for Figure 1 A partial enlarged view of point II in the middle.

[0034] Among them, 1. frame, 2. axial positioning mechanism, 3. spindle rotation assembly, 4. tool feeding mechanism, 5. sliding positioning assembly, 6. abutment transmission assembly, 7. abutment positioning shaft, 8. sliding guide sleeve, 9. nut, 10. abutment screw, 11. translation plate, 12. step portion, 13. damping sleeve, 14. hollow transmission shaft, 15. three-jaw chuck, 16. rotary bearing, 17. driving wheel, 18. clamping block, 19. longitudinal module, 20. Axial sliding assembly, 21. Feed assembly, 22. Tool adjustment assembly, 23. Feed motor, 24. Feed screw, 25. Active bevel gear, 26. Driven bevel gear, 27. Guide frame, 28. Fixed plate, 29. Sliding plate, 30. Longitudinal slider, 31. Limit switch, 32. Lifting frame, 33. Tool holder, 34. Tool head, 35. Sleeve workpiece, 36. Manual screw, 37. Guide rail, 38. Screw rotating bracket.

[0035] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0038] like Figures 1 to 8 As shown, the present invention proposes a turning clamping device for sleeve chamfering, comprising a frame 1, an axial positioning mechanism 2, a spindle rotating assembly 3 and a tool feeding mechanism 4, wherein the spindle rotating assembly 3 is rotatably mounted on the frame 1, the axial positioning mechanism 2 is mounted on the frame 1 and the spindle rotating assembly 3, and the tool feeding mechanism 4 is mounted on the inner wall of the frame 1;

[0039] The main shaft rotation assembly 3 includes a hollow transmission shaft 14, which is rotatably arranged on the side wall of the frame 1. The axial positioning mechanism 2 includes a sliding positioning assembly 5 and an abutment transmission assembly 6. The abutment transmission assembly 6 is rotatably arranged on the frame 1. The sliding positioning assembly 5 includes an abutment positioning shaft 7 and a sliding guide sleeve 8. The sliding guide sleeve 8 is fixed to the hollow transmission shaft 14. The abutment positioning shaft 7 and the sliding guide sleeve 8 are respectively provided with bosses and grooves that slide with each other. One end of the abutment positioning shaft 7 is provided with an array of step portions 12 with different diameters.

[0040] Step portions 12 of different diameters can match sleeve workpieces 35 of different specifications. The technical effect of axial positioning is achieved by the step portion 12 abutting against the sleeve workpiece 35. The abutment positioning shaft 7 and the sliding guide sleeve 8 rotate together with the three-jaw chuck 15, which can make the step portions 12 and the sleeve workpiece 35 that abut each other relatively stationary, thereby avoiding damage to the sleeve workpiece 35.

[0041] The abutment transmission assembly 6 includes a nut 9, an abutment screw rod 10 and a translation plate 11. A damping sleeve 13 is provided on the outside of the nut 9. The nut 9 is rotatably arranged on the side wall of the frame 1 through the damping sleeve 13. Threaded transmission is generated between the abutment screw rod 10 and the nut 9. One end of the abutment screw rod 10 is rotatably arranged in the translation plate 11, and the other end of the abutment positioning shaft 7 is rotatably arranged in the translation plate 11.

[0042] There is resistance to the rotation of the damping sleeve 13 in the frame 1. Before the step portion 12 abuts against the sleeve workpiece 35, the abutment screw 10 can change its own axial position by relative rotation with the nut 9; after the step portion 12 abuts against the sleeve workpiece 35, the abutment positioning shaft 7 cannot continue to move axially. At this time, the nut 9 will rotate synchronously with the abutment screw 10 and maintain the mutual abutment between the step portion 12 and the sleeve workpiece 35.

[0043] The tool feeding mechanism 4 includes a longitudinal module 19, an axial sliding assembly 20, a feed assembly 21 and a tool adjustment assembly 22. The longitudinal module 19 is arranged on the axial sliding assembly 20, the feed assembly 21 is arranged on the axial sliding assembly 20, and the tool adjustment assembly 22 is arranged on the feed assembly 21.

[0044] The longitudinal module 19 includes a feed motor 23, a driving bevel gear 25 and a driven bevel gear 26. A feed screw 24 is provided on the output shaft of the feed motor 23. The driving bevel gear 25 is fixed to the feed screw 24. The driven bevel gear 26 is fixed to the abutting screw 10. The driving bevel gear 25 and the driven bevel gear 26 are engaged and transmitted.

[0045] The feed motor 23 rotates with the feed screw 24, and can push the longitudinal slider 30 downward while driving the abutment positioning shaft 7 to move axially and approach the sleeve workpiece 35; since there is a large safety distance between the cutter head 34 and the sleeve workpiece 35, before the cutter head 34 reaches the sleeve workpiece 35, the step portion 12 has already abutted against the edge of the sleeve workpiece 35 and completed the axial positioning.

[0046] The axial sliding assembly 20 includes a guide frame 27, a fixed plate 28, a sliding plate 29 and a screw rotating bracket 38. The fixed plate 28 is fixed to the inner wall of the frame 1, and the sliding plate 29 is slidably arranged on the fixed plate 28 through the guide rail 37. The guide frame 27 is fixed to the sliding plate 29, the feed motor 23 is arranged on the guide frame 27, and the screw rotating bracket 38 is arranged below the sliding plate 29, and the abutment screw 10 is rotated in the screw rotating bracket 38.

[0047] The feed assembly 21 includes a longitudinal slider 30, a limit switch 31 and a lifting frame 32. The longitudinal slider 30 is slidably arranged on the slide rod of the guide frame 27. The longitudinal slider 30 is provided with an internal thread threadedly connected to the feed screw 24. The limit switch 31 is arranged on the guide frame 27. The height of the limit switch 31 can be adjusted. The lifting frame 32 is fixed to the side of the longitudinal slider 30.

[0048] The tool adjustment assembly 22 includes a tool holder 33 , a guide rail 37 is provided on the lifting frame 32 , the tool holder 33 is slidably provided on the guide rail 37 , a manual screw 36 is rotatably provided on the lifting frame 32 , and an internal thread is provided in the tool holder 33 that is threadedly connected to the manual screw 36 .

[0049] By rotating the manual screw 36 , the relative positions of the tool holder 33 and the step portion 12 can be preset and adjusted according to the different specifications of the sleeve workpiece 35 , thereby improving the scope of application and practicality of this solution.

[0050] The tool adjustment assembly 22 further includes a tool head 34 , which is detachably mounted on the tool holder 33 .

[0051] The spindle rotation assembly 3 also includes a three-jaw chuck 15, a rotary bearing 16 and a drive wheel 17. The rotary bearing 16 is arranged between the hollow transmission shaft 14 and the frame 1. The three-jaw chuck 15 is fixedly connected to one end of the hollow transmission shaft 14. A clamping block 18 is slidingly provided on the three-jaw chuck 15. The clamping block 18 can clamp the sleeve workpiece 35 when it contracts. The drive wheel 17 is arranged at the other end of the hollow transmission shaft 14, and the drive wheel 17 is driven by an external motor.

[0052] During specific use, the sleeve workpiece 35 is placed between the clamping blocks 18 of the three-jaw chuck 15 manually or through an automated clamping jaw, and then the clamping blocks 18 are contracted by rotating the three-jaw chuck 15 to clamp the sleeve workpiece 35. The center axis position of the clamped sleeve workpiece 35 is the same as that of the three-jaw chuck 15, but the axial position is uncertain; the three-jaw chuck 15 can also be driven manually or electrically.

[0053] Then the external motor drives the hollow transmission shaft 14 and the three-jaw chuck 15 to rotate as a whole through the driving wheel 17, and at the same time rotates the sleeve workpiece 35; when the hollow transmission shaft 14 rotates, the abutment positioning shaft 7 also rotates at the same speed, and at the same time, axial relative movement can occur between the abutment positioning shaft 7 and the sliding guide sleeve 8.

[0054] At this time, the feed motor 23 is started to rotate the feed screw 24. When the feed screw 24 rotates, on the one hand, it can bring the longitudinal slider 30 down, and on the other hand, through the transmission of the active bevel gear 25 and the driven bevel gear 26, it can also drive the abutment screw 10 to rotate in the screw rotation bracket 38; there is resistance to the rotation of the damping sleeve 13 in the frame 1, and before the step portion 12 abuts the sleeve workpiece 35, the abutment screw 10 can change its axial position by relative rotation with the nut 9; after the step portion 12 abuts the sleeve workpiece 35, the abutment positioning shaft 7 cannot continue to move axially. At this time, the nut 9 will overcome the resistance of the damping sleeve 13 and rotate synchronously with the abutment screw 10, and maintain the mutual abutment between the step portion 12 and the sleeve workpiece 35;

[0055] The abutting screw 10 will cause the sliding plate 29 to slide axially on the fixed plate 28 while moving axially, and at the same time, the cutter head 34 will be adjusted to the correct position in the axial direction. Since there is a large safety distance between the cutter head 34 and the sleeve workpiece 35, the above process occurs before the cutter head 34 reaches the sleeve workpiece 35. Then the feed motor 23 continues to drive, and at this time the abutting screw 10 rotates with the nut 9 and maintains the abutting relationship between the step portion 12 and the sleeve workpiece 35. At the same time, the cutter head 34 continues to descend, and after the cutter head 34 contacts the rotating sleeve workpiece 35, it can chamfer the edge of the sleeve workpiece 35.

[0056] Until the longitudinal slider 30 triggers the limit switch 31, the cutter head 34 stops descending and the feed motor 23 rotates in the opposite direction to reset. During this process, the abutment positioning shaft 7 will reset and move away from the sleeve workpiece 35, and the cutter head 34 will also rise and reset to the top origin.

[0057] Then, remove the sleeve workpiece 35 according to the reverse steps and install the next sleeve workpiece 35 .

[0058] If a sleeve workpiece 35 of another specification needs to be processed, the axial relative position of the tool holder 33 and the step portion 12 needs to be set by rotating the manual screw 36. This parameter is mainly set according to the length of the sleeve workpiece 35; at the same time, the longitudinal height of the limit switch 31 is adjusted to set the maximum feed depth of the tool head 34. This parameter is mainly set according to the processing diameter of the sleeve workpiece 35.

[0059] Since the device can be used for parts with different diameters, even if one end of the sleeve workpiece 35 has a flange, the device can also perform chamfering on the flange portion.

[0060] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0061] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A turning clamping device for sleeve chamfering, characterized in that: The machine comprises a frame (1), an axial positioning mechanism (2), a spindle rotating assembly (3) and a tool feeding mechanism (4), wherein the spindle rotating assembly (3) is rotatably mounted on the frame (1), the axial positioning mechanism (2) is mounted on the frame (1) and the spindle rotating assembly (3), and the tool feeding mechanism (4) is mounted on the inner wall of the frame (1); The spindle rotation assembly (3) includes a hollow transmission shaft (14), the hollow transmission shaft (14) is rotatably mounted on the side wall of the frame (1), the axial positioning mechanism (2) includes a sliding positioning assembly (5) and an abutting transmission assembly (6), the abutting transmission assembly (6) is rotatably mounted on the frame (1), the sliding positioning assembly (5) includes an abutting positioning shaft (7) and a sliding guide sleeve (8), the sliding guide sleeve (8) is fixed to the hollow transmission shaft (14), the abutting positioning shaft (7) and the sliding guide sleeve (8) are respectively provided with bosses and grooves that slide in cooperation with each other, and one end of the abutting positioning shaft (7) is provided with an array of step portions (12) of different diameters; The abutment transmission assembly (6) includes a nut (9), an abutment screw rod (10) and a translation plate (11); a damping sleeve (13) is provided on the outside of the nut (9); the nut (9) is rotatably arranged on the side wall of the frame (1) through the damping sleeve (13); a threaded transmission is performed between the abutment screw rod (10) and the nut (9); one end of the abutment screw rod (10) is rotatably arranged in the translation plate (11); and the other end of the abutment positioning shaft (7) is rotatably arranged in the translation plate (11); The tool feeding mechanism (4) comprises a longitudinal module (19), an axial sliding assembly (20), a feed assembly (21) and a tool adjusting assembly (22), wherein the longitudinal module (19) is arranged on the axial sliding assembly (20), the feed assembly (21) is arranged on the axial sliding assembly (20), and the tool adjusting assembly (22) is arranged on the feed assembly (21); The longitudinal module (19) includes a feed motor (23), a driving bevel gear (25) and a driven bevel gear (26); a feed screw (24) is provided on the output shaft of the feed motor (23); the driving bevel gear (25) is fixed to the feed screw (24); the driven bevel gear (26) is fixed to the abutting screw (10); the driving bevel gear (25) and the driven bevel gear (26) are meshed and driven; The axial sliding assembly (20) includes a guide frame (27), a fixed plate (28), a sliding plate (29) and a screw rotating bracket (38), wherein the fixed plate (28) is fixed to the inner wall of the frame (1), the sliding plate (29) is slidably arranged on the fixed plate (28) through a guide rail (37), the guide frame (27) is fixed to the sliding plate (29), the feed motor (23) is arranged on the guide frame (27), the screw rotating bracket (38) is arranged below the sliding plate (29), and the abutting screw (10) is rotatably arranged in the screw rotating bracket (38).

2. A turning clamping device for sleeve chamfering according to claim 1, characterized in that: The feed assembly (21) includes a longitudinal slider (30), a limit switch (31) and a lifting frame (32), wherein the longitudinal slider (30) is slidably arranged on a slide rod of a guide frame (27), and an internal thread threadedly connected to the feed screw (24) is provided in the longitudinal slider (30), and the limit switch (31) is arranged on the guide frame (27), and the height of the limit switch (31) can be adjusted, and the lifting frame (32) is fixed to the side of the longitudinal slider (30).

3. A turning clamping device for sleeve chamfering according to claim 2, characterized in that: The tool adjustment assembly (22) includes a tool holder (33), a guide rail (37) is provided on the lifting frame (32), the tool holder (33) is slidably arranged on the guide rail (37), a manual screw (36) is rotatably provided on the lifting frame (32), and an internal thread is provided in the tool holder (33) that is threadedly connected to the manual screw (36).

4. A turning clamping device for sleeve chamfering according to claim 3, characterized in that: The tool adjustment assembly (22) further includes a tool head (34), and the tool head (34) is detachably mounted on the tool holder (33).

5. The turning clamping device for sleeve chamfering according to claim 4, characterized in that: The spindle rotation assembly (3) further includes a three-jaw chuck (15), a rotary bearing (16) and a driving wheel (17), wherein the rotary bearing (16) is arranged between the hollow transmission shaft (14) and the frame (1), the three-jaw chuck (15) is fixed to one end of the hollow transmission shaft (14), a clamping block (18) is slidably provided on the three-jaw chuck (15), and the clamping block (18) can clamp the sleeve workpiece (35) when it is retracted, and the driving wheel (17) is arranged at the other end of the hollow transmission shaft (14), and the driving wheel (17) is driven by an external motor.

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