A sanding device for a commutator hook

Abstract

A sanding device for a commutator hook includes second motors arranged linearly. A second cylinder is provided above the second motors. A lower sleeve is slidably connected to the output shaft of the second motors through a first spring. The telescopic ends of several second cylinders on both sides are rotatably provided with follower cylinders. A sanding wheel is provided on the outer side of the follower cylinders. The telescopic end of the second cylinder in the middle is rotatably provided with an open pressing head. The telescopic end of the second cylinder behind the open pressing head is rotatably provided with an outward-turning pressing head. In the present invention, the follower cylinders apply pressure to the commutator on the lower sleeve, so that the commutator is axially tightened. Both the upper and lower walls of the commutator are subject to a certain frictional force. When the lower sleeve rotates, the commutator is driven to rotate under the action of the frictional force, thereby realizing the sanding operation. This clamping method does not require clamping on the circumferential side wall and has no clamping blind spots.

Description

Technical Field

[0001] The present invention belongs to the technical field of commutators, and specifically refers to a sanding device for commutator hooks. Background Art

[0002] The commutator is one of the key components of an electric motor. This component is composed of multiple copper commutator segments arranged tightly along the circumferential direction. A protrusion is provided on the inner side of the commutator segment, which cooperates with a dovetail groove, and this protrusion makes the commutator form a stepped hollow cylindrical structure. Mica sheets for insulation are also filled between the commutator segments, and the mica sheets can enhance the radial stability of the commutator.

[0003] There are several prominent problems in the processing of commutators. First, the sanding process requires the treatment of all exposed surfaces, but due to the hollow cylindrical structure, there must be blind spots during clamping, which affects the processing quality. Second, for some products, the top of the commutator segment needs to be bent into a hook shape for welding, and this process will expose the inner metal, which also requires secondary sanding.

[0004] More critically, although the mica sheets can ensure the radial stability in the circumferential direction, their axial bonding strength is insufficient, and the longitudinal bending force generated during the hook operation can easily cause deformation. To address these problems, special support tooling must be equipped for commutators of different specifications. However, due to the large variety of commutators, the demand for tooling is large, the management is complex, and the efficiency is reduced. Summary of the Invention

[0005] In view of the above situation, to overcome the defects of the prior art, the present invention provides a sanding device for commutator hooks, which at least partially solves the above problems.

[0006] The technical solution adopted by the present invention is as follows: A sanding device for commutator hooks proposed by the present invention includes linearly arranged second motors, and a second cylinder is provided above the second motors. The second motors drive the commutator to rotate, and the second cylinder applies pressure to the commutator;

[0007] A lower sleeve, which is elastically connected to the output shaft of the second motor through a first spring and achieves synchronous rotation through keyway cooperation;

[0008] A follower cylinder, which is rotatably arranged at the telescopic ends of several second cylinders on both sides. The commutator is clamped between the lower sleeve and the follower cylinder, and a sanding wheel is provided on the outer side of the follower cylinder;

[0009] An open head, which is rotatably arranged at the telescopic end of the second cylinder in the middle. A first conical surface with a pointed cone downward is provided at the bottom of the open head, which is used to make the top opening of the commutator into a conical shape;

[0010] Eversion press head, rotate the telescopic end of the second cylinder which is arranged behind the opening press head. The lower end of the eversion press head is provided with a second conical surface with a downward opening, which is used to press on the top of the commutator and bend it.

[0011] In some embodiments, a sanding device for a commutator hook of the present invention further includes a lower bracket and an upper bracket. The second motors are linearly arranged on the lower bracket, and the second cylinders are linearly arranged on the upper bracket. The output shaft of the second motor is coaxially arranged with the telescopic end of the second cylinder.

[0012] In some embodiments, a conveying table is slidably arranged on the lower bracket. A first motor is threadedly connected in the conveying table. The upper wall of the conveying table is linearly arranged with first cylinders, and the telescopic ends of the first cylinders are provided with clamping claws, which are used to convey the commutator to each lower sleeve.

[0013] In some embodiments, the sanding wheels include a transverse polishing wheel, a longitudinal polishing wheel and an inner polishing wheel. The transverse polishing wheel is arranged outside the following cylinder at the front end, and the transverse polishing wheel is used for transversely sanding the commutator. The longitudinal polishing wheel is arranged behind the transverse polishing wheel, and the longitudinal polishing wheel is used for sanding the axial side wall of the commutator. The inner polishing wheel is arranged outside the following cylinder at the rearmost, and the inner polishing wheel is used for sanding the inner wall of the everted hook of the commutator.

[0014] In some embodiments, a roundness correction mechanism is arranged below the eversion press head. The roundness correction mechanism includes a correcting clamping cylinder, a rotating ring and a central fixing ring. The correcting clamping cylinder is fixed to the lower bracket through an outer fixing cylinder. The central fixing ring is fixed to the lower bracket through an inner fixing rod. The rotating ring is rotatably arranged in the area between the correcting clamping cylinder and the central fixing ring, and the rotating ring can slide up and down relative to the central fixing ring and the correcting clamping cylinder.

[0015] In some embodiments, a lifting cylinder is arranged on the lower wall of the rotating ring. The lower end of the lifting cylinder is provided with a transmission cylinder, which is fixed to the lower bracket. A second spring is connected between the lifting cylinder and the transmission cylinder, and the lifting cylinder and the transmission cylinder are slidably connected through a key groove.

[0016] In some embodiments, a driven wheel is sleeved at the bottom of the transmission cylinder, and a driving wheel is meshed with the driven wheel. The driving wheel is arranged on the output shaft of the second motor below the eversion press head.

[0017] In some embodiments, a plurality of outer support rods capable of sliding in the radial direction are penetrated through the side wall of the correcting clamping cylinder, and a plurality of inner support rods capable of sliding in the radial direction are arranged on the central fixing ring.

[0018] In some embodiments, an outer adjustment disk is rotatably provided on the correction clamping cylinder, and a plurality of groups of second inclined grooves are provided on the outer adjustment disk; an inner adjustment disk is rotatably provided on the center fixed ring, and a plurality of groups of first inclined grooves are provided on the inner adjustment disk; a plurality of groups of second sliding grooves distributed radially are provided on the correction clamping cylinder, and a plurality of groups of first sliding grooves distributed radially are provided on the center fixed ring.

[0019] In some embodiments, the outer support rod is slidably disposed in the second inclined groove and the second slide groove simultaneously through a pin, and the inner support rod is slidably disposed in the first inclined groove and the first slide groove simultaneously through a pin.

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

[0021] 1. The follower cylinder applies pressure to the commutator on the lower sleeve, so that the commutator is tightened in the axial direction. The upper and lower walls of the commutator are subjected to a certain friction force. When the lower sleeve rotates, the commutator is driven to rotate under the action of friction force, thereby realizing the sanding operation. This clamping method does not need to clamp on the circumferential side wall, and there is no clamping blind spot. The first spring can play a certain buffering role, avoiding damage to the copper commutator segment caused by greater pressure, and can ensure a certain friction force;

[0022] 2. The correction clamp can adapt to commutators of various radius types to ensure the stability of the commutator when it is bent. The swivel can drive the commutator to rotate at high speed, actively correct the deformed parts of the commutator, and ensure the roundness of the commutator. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structure of the sanding equipment for the commutator hook of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 The structure of the sanding equipment for the commutator hook of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 3 is a cross-sectional view of the connection relationship between the second motor and the lower sleeve;

[0026] Figure 4 is a cross-sectional view of the opening pressure head;

[0027] Figure 5 is a cross-sectional view of the everted indenter;

[0028] Figure 6 It is a cross-sectional view of the roundness correction mechanism;

[0029] Figure 7 To correct the exploded view of the components inside the clamping cylinder;

[0030] Figure 8 Cross-sectional view of the correct clamping tube.

[0031] Among them, 1. lower bracket, 2. upper bracket, 3. conveying table, 4. first motor, 5. first cylinder, 6. clamping jaw, 7. second cylinder, 8. second motor, 9. lower sleeve, 10. follower cylinder, 11. transverse polishing wheel, 12. longitudinal polishing wheel, 13. opening press head, 14. outward turning press head, 15. inner polishing wheel, 16. roundness correction mechanism, 17. first spring, 18. first conical surface, 19. first rotating hole, 20. second conical surface, 21. second rotating hole, 22. outer fixing cylinder, 23. lifting cylinder, 24. inner fixing rod, 25. transmission cylinder, 26. second spring, 27. driven wheel, 28. correction clamping cylinder, 29. outer adjustment disc, 30. inner adjustment disc, 31. inner support rod, 32. outer support rod, 33. rotating ring, 34. central fixing ring, 35. first inclined groove, 36. second inclined groove, 37. first sliding groove, 38. second sliding groove, 39. driving wheel.

[0032] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0035] As Figures 1 - 5 shown, a sanding device for a commutator hook proposed in an embodiment of the present invention includes a linearly arranged second motor 8, a linearly arranged second cylinder 7, a lower sleeve 9, a follower cylinder 10, an opening press head 13, and an outward turning press head 14. The second cylinder 7 is arranged above the second motor 8. The second motor 8 drives the commutator to rotate so that the commutator completes the sanding operation during rotation. The second cylinder 7 applies pressure to the commutator to axially compress and fix the commutator so that the commutator rotates following the second motor 8 under the action of friction.

[0036] The lower sleeve 9 is slidably connected to the output shaft of the second motor 8 through the first spring 17, and the lower sleeve 9 and the output shaft of the second motor 8 are connected by a keyway, that is, the two can only slide up and down and cannot rotate relative to each other. During the sanding operation, the commutator is placed on the lower sleeve 9. The follower cylinder 10 is rotatably arranged on the telescopic ends of several second cylinders 7 on both sides. The follower cylinder 10 can rotate relative to the telescopic rod of the second cylinder 7. During the sanding operation, the follower cylinder 10 moves downward under the drive of the second cylinder 7 and presses against the commutator, so that it is clamped between the lower sleeve 9 and the follower cylinder 10. When the second motor 8 works, it will drive the lower sleeve 9 to rotate, and the commutator on the lower sleeve 9 will rotate following the friction force. A sanding wheel is also provided on the outer side of the follower cylinder 10. When the commutator rotates, the sanding wheel is driven to approach and sand the surface of the commutator. Since the commutator is made of copper and has low hardness and strength, after the commutator is pressed, it will compress the lower sleeve 9 synchronously, causing the lower sleeve 9 to compress the first spring 17, avoiding excessive deformation of the commutator due to excessive pressure. The first spring 17 plays a certain buffering role and can also ensure that there is sufficient friction force at both shaft ends of the commutator, preventing slipping.

[0037] The opening punch 13 is rotatably arranged on the telescopic end of the second cylinder 7 in the middle. A first rotating hole 19 is provided in the middle of the upper wall of the opening punch 13. The telescopic end of the second cylinder 7 is rotatably connected to the opening punch 13 through this first rotating hole 19. The working principle of the opening punch 13 is the same as that of the follower cylinder 10. It can rotate relative to the telescopic end of the second cylinder 7 and can also apply pressure to the commutator, so as to rotate together with the commutator and the lower sleeve 9. A first conical surface 18 with a pointed cone downward is provided at the bottom of the opening punch 13. The bottom radius of the first conical surface 18 is smaller than the top radius, so that the first conical surface 18 can be inserted into the center of the commutator. When the first conical surface 18 is inserted into the commutator, pressure is applied to the top of the commutator segment, causing the upper region of the commutator segment to deform to an angle adapted to the first conical surface 18. At this time, the top of the commutator presents a cone with an upward opening, thus completing the pre-bending operation of the commutator. The first conical surface 18 can adapt to commutators with different apertures. The top of the small-diameter commutator contacts the inner side of the first conical surface 18, and the top of the large-diameter commutator contacts the outer side of the first conical surface 18. The length of the pre-bending is controlled by the pressing depth of the opening punch 13. In order to prevent the commutator from undergoing longitudinal deformation during the pre-bending operation, a clamping tool for support can be placed at the bottom of the commutator (i.e., the upper wall of the lower sleeve 9 below the opening punch 13) to force the commutator to remain cylindrical.

[0038] The outward-turning pressure head 14 rotates the telescopic end of the second cylinder 7 arranged behind the opening pressure head 13. A second rotation hole 21 is provided in the middle of the upper wall of the outward-turning pressure head 14. The telescopic end of the second cylinder 7 is rotatably connected with the opening pressure head 13 through the second rotation hole 21. The lower end of the outward-turning pressure head 14 is provided with a second cone surface 20 with an opening facing downward, which is used to apply pressure to the top of the commutator and bend it. The working principle of the outward-turning pressure head 14 is the same as that of the follower cylinder 10. It can also rotate relative to the telescopic end of the second cylinder 7, and at the same time, it can apply pressure to the commutator, so that it rotates together with the commutator and the lower sleeve 9. While rotating, the commutator The commutator segments within the circumference of the commutator are hooked, and the taper of the second conical surface 20 is the hook angle of the commutator. The second conical surface 20 can be suitable for commutators of different diameters. The top of the commutator with a small diameter contacts the inner side of the second conical surface 20, and the top of the commutator with a large diameter contacts the outer side of the second conical surface 20. The length of the hook is controlled by the pressing depth of the eversion pressure head 14. Similarly, in order to avoid longitudinal deformation during operation, a supporting clamping tool can be placed at the bottom of the commutator (i.e., the upper wall of the lower sleeve 9 below the opening pressure head 13) during the eversion hook operation to force the commutator to remain cylindrical.

[0039] In some embodiments, a sanding device for a commutator hook is proposed in an embodiment of the present invention, and further includes a lower bracket 1 and an upper bracket 2. A second motor 8 is linearly arranged on the lower bracket 1, and a second cylinder 7 is linearly arranged on the upper bracket 2. The output shaft of the second motor 8 is coaxially arranged with the telescopic end of the second cylinder 7. A conveying platform 3 is slidably provided on the lower bracket 1. A first motor 4 is threadedly connected to the conveying platform 3. A first cylinder 5 is linearly arranged on the upper wall of the conveying platform 3. A clamp 6 is provided on the telescopic end of the first cylinder 5. When the first motor 4 rotates, the conveying platform 3 is driven to reciprocate, thereby driving the first cylinder 5 on the conveying platform 3 to reciprocate between two adjacent workstations. When the first cylinder 5 contracts, the clamp 6 closes, thereby clamping the commutator on the lower sleeve 9. The first cylinder 5 moves to the next workstation with the conveying platform 3. The first cylinder 5 extends, and the clamp 6 opens and places the commutator on the lower sleeve 9 of the next workstation, thereby completing the material conveying operation.

[0040] In some embodiments, the sanding wheel includes a transverse polishing wheel 11, a longitudinal polishing wheel 12, and an inner polishing wheel 15. The transverse polishing wheel 11 is disposed outside the follower cylinder 10 at the front end and is used for transverse sanding of the surface of the commutator that has not been bent. The longitudinal polishing wheel 12 is disposed behind the transverse polishing wheel 11. After the transverse sanding operation, the longitudinal polishing wheel 12 sands the commutator in the axial direction to avoid blind spots in the sanding operation caused by the inability to cover the grooves between the commutator segments during the transverse sanding operation. The inner polishing wheel 15 is disposed outside the follower cylinder 10 at the rearmost position. The inner polishing wheel 15 is used for sanding the inner wall of the commutator that turns outwards after bending. When the commutator completes the bending operation, the inner wall of the original commutator segment will fold to the outside. The original transverse polishing wheel 11 and longitudinal polishing wheel 12 can only sand the outer wall of the commutator and cannot process the inner wall. The inner polishing wheel 15 is used to supplement the sanding to make the surface finish of the folded inner wall of the commutator meet the requirements.

[0041] In some embodiments, as Figure 2 , Figure 6 and Figure 8 shown, in order to reduce the number of bottom support clamping molds of the commutator during the bending operation and enable one type of mold to be applicable to commutators with multiple different apertures, a roundness correction mechanism 16 is provided below the outward turning press head 14. The roundness correction mechanism 16 includes a correcting clamping cylinder 28, a rotating ring 33, and a central fixing ring 34. The correcting clamping cylinder 28 is fixed to the lower bracket 1 through an outer fixing cylinder 22. The central fixing ring 34 is fixed to the lower bracket 1 through an inner fixing rod 24. The rotating ring 33 is rotatably disposed in the area between the correcting clamping cylinder 28 and the central fixing ring 34. The rotating ring 33 can slide up and down relative to the central fixing ring 34 and the correcting clamping cylinder 28. A lifting cylinder 23 is provided on the lower wall of the rotating ring 33. A transmission cylinder 25 is provided at the lower end of the lifting cylinder 23. The transmission cylinder 25 is fixed to the lower bracket 1. A second spring 26 is connected between the lifting cylinder 23 and the transmission cylinder 25. The lifting cylinder 23 and the transmission cylinder 25 are slidably connected through a keyway. The area where the rotating ring 33 is located, that is, the ring body width of the rotating ring 33, is the diameter fluctuation range of the applicable commutator. Commutators within this range can be supported by the rotating ring 33. When the commutator is placed on the rotating ring 33, the upward outward turning press head 14 applies pressure, causing the rotating ring 33 to move downward along the keyway on the inner side wall of the transmission cylinder 25 against the resistance of the second spring 26. This not only ensures that the commutator will not be damaged under a large pressure, but also enables the two ends of the commutator to have sufficient friction, and can also enable the commutator to rotate together with the rotating ring 33 and the transmission cylinder 25 (the working principles of the second spring 26 and the rotating ring 33 are similar to those of the first spring 17 and the lower sleeve 9).

[0042] In some embodiments, a driven wheel 27 is sleeved on the bottom of the transmission cylinder 25, and a driving wheel 39 is meshed on the driven wheel 27. The driving wheel 39 is arranged on the output shaft of the second motor 8 below the outward-turning pressure head 14. The second motor 8 drives the transmission cylinder 25 to rotate through the driving wheel 39 and the driven wheel 27, thereby driving the lifting cylinder 23 to rotate, and finally driving the commutator on the rotating ring 33 to rotate, and completing the hook bending operation during the rotation process.

[0043] In some embodiments, Figure 7 As shown, in order to clamp and fix the root of the commutator on the swivel 33, the side wall of the correction clamping cylinder 28 is penetrated by a plurality of groups of outer support rods 32 that can slide in the radial direction, and the central fixed ring 34 is provided with a plurality of groups of inner support rods 31 that can slide in the radial direction. The ends of the outer support rods 32 and the inner support rods 31 are set to a certain curvature. When the outer support rods 32 and the inner support rods 31 slide toward each other, the commutator on the swivel 33 can be clamped. The minimum spacing between the outer support rods 32 and the inner support rods 31 is the thickness of the swivel 33, and the distance between the outer support rods 32 and the inner support rods 31 relative to the center of the swivel 33 is the diameter of the inner and outer walls of the commutator. The curvature of the outer support rods 32 and the inner support rods 31 is fixed. When the curvature radius is different from the curvature radius of the commutator, only the poles of the arcs of the outer support rods 32 and the inner support rods 31 will always be aligned with the commutator. The inner and outer wall are in contact, and the rest of the positions are still at a certain distance from the commutator, but this distance is controllably controlled within a certain range, which is the difference between the inner arc diameter of the outer support rod 32 and the outer wall diameter of the commutator, and the difference between the outer arc diameter of the inner support rod 31 and the inner wall diameter of the commutator. This difference is small, so the maximum deformation of the commutator root area that is not in contact with the outer support rod 32 and the inner support rod 31 will not exceed this difference; and when the hook is bent, the swivel 33 also drives the commutator to rotate at a high frequency, and the deformation area of the commutator will contact the extreme points of the outer support rod 32 and the inner support rod 31 at a high speed. This extreme point will quickly correct the deformation area of the commutator, and the rotation radius of the extreme point remains constant, so that the deformation area of the commutator is restored to a circle, and finally the deformation problem of the commutator is solved.

[0044] In some embodiments, an outer adjustment disk 29 is rotatably provided on the correction clamping cylinder 28, and a plurality of groups of second inclined grooves 36 are provided on the outer adjustment disk 29; an inner adjustment disk 30 is rotatably provided on the center fixed ring 34, and a plurality of groups of first inclined grooves 35 are provided on the inner adjustment disk 30; a plurality of groups of second slide grooves 38 distributed radially are provided on the correction clamping cylinder 28, and a plurality of groups of first slide grooves 37 distributed radially are provided on the center fixed ring 34; the outer support rod 32 is slidably provided in the second inclined groove 36 and the second slide groove 38 at the same time by pins, and the inner support rod 31 is slidably provided in the first inclined groove 35 and the first slide groove 37 at the same time by pins; rotating the outer adjustment disk 29 and the inner adjustment disk 30 can make the outer support rod 32 and the inner support rod 31 slide radially, thereby changing the positions of the outer support rod 32 and the inner support rod 31, so as to clamp commutators of different diameters and thicknesses.

[0045] After the hook operation is completed, the commutator is conveyed to the last lower sleeve 9, and the inner wall of the turned-out commutator is sanded under the action of the inner throwing wheel 15.

[0046] It should be noted that in this article, relational terms such as first and second are only used 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0047] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative work without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A sanding device for a commutator hook, characterized in that, Including: Second motors (8) arranged linearly, with second cylinders (7) respectively provided above each second motor (8); A plurality of lower sleeves (9), elastically connected to the output shafts of the second motors (8) through first springs (17), and achieving synchronous rotation through keyway fits; A plurality of follower cylinders (10), rotatably arranged at the telescopic ends of several second cylinders (7) on both sides, the commutator is configured to be clamped between the lower sleeve (9) and the follower cylinder (10), and a sanding wheel is provided on the outer side of the follower cylinder (10); An open punch (13), rotatably arranged at the telescopic end of the second cylinder (7) in the middle, and a first conical surface (18) with a downward-pointing tip cone is provided at the bottom of the open punch (13); An outward-turning punch (14), rotatably arranged at the telescopic end of the second cylinder (7) behind the open punch (13), and a second conical surface (20) with a downward opening is provided at the lower end of the outward-turning punch (14); A lower bracket (1) and an upper bracket (2), the second motors (8) are arranged linearly on the lower bracket (1), the second cylinders (7) are arranged linearly on the upper bracket (2), and the output shafts of the second motors (8) are coaxially arranged with the telescopic ends of the second cylinders (7); A roundness correction mechanism (16) is provided below the outward-turning punch (14), the roundness correction mechanism (16) includes a correction clamping cylinder (28), a rotating ring (33) and a central fixed ring (34), the correction clamping cylinder (28) is fixed to the lower bracket (1) through an outer fixed cylinder (22), the central fixed ring (34) is fixed to the lower bracket (1) through an inner fixed rod (24), the rotating ring (33) is rotatably arranged in the area between the correction clamping cylinder (28) and the central fixed ring (34), and the rotating ring (33) can slide up and down relative to the central fixed ring (34) and the correction clamping cylinder (28); A lifting cylinder (23) is provided on the lower wall of the rotating ring (33), a transmission cylinder (25) is provided at the lower end of the lifting cylinder (23), the transmission cylinder (25) is fixed to the lower bracket (1), a second spring (26) is connected between the lifting cylinder (23) and the transmission cylinder (25), and the lifting cylinder (23) and the transmission cylinder (25) are slidably connected through a keyway; A plurality of outer support rods (32) capable of sliding in the radial direction are provided through the side wall of the correction clamping cylinder (28), and a plurality of inner support rods (31) capable of sliding in the radial direction are provided on the central fixed ring (34); An outer adjustment disc (29) is rotatably provided on the correction clamping cylinder (28), a plurality of second inclined grooves (36) are provided on the outer adjustment disc (29), an inner adjustment disc (30) is rotatably provided on the central fixed ring (34), a plurality of first inclined grooves (35) are provided on the inner adjustment disc (30), a plurality of second sliding grooves (38) are provided on the correction clamping cylinder (28) along the radial direction, and a plurality of first sliding grooves (37) are provided on the central fixed ring (34) along the radial direction; The outer support rods (32) are simultaneously slidably arranged in the second inclined grooves (36) and the second sliding grooves (38) through pins, and the inner support rods (31) are simultaneously slidably arranged in the first inclined grooves (35) and the first sliding grooves (37) through pins.

2. The sanding device for the commutator hook according to claim 1, characterized in that: A conveying table (3) is slidably arranged on the lower bracket (1). A first motor (4) is threadedly connected in the conveying table (3). A first cylinder (5) is linearly arranged on the upper wall of the conveying table (3). A clamping jaw (6) is arranged at the telescopic end of the first cylinder (5). The clamping jaw (6) is used for conveying the commutator to each lower sleeve (9).

3. The sanding device for the commutator hook according to claim 1, characterized in that: The sanding wheel includes a transverse polishing wheel (11), a longitudinal polishing wheel (12) and an inner polishing wheel (15). The transverse polishing wheel (11) is arranged outside the follower cylinder (10) at the front end. The transverse polishing wheel (11) is used for transversely sanding the commutator. The longitudinal polishing wheel (12) is arranged behind the transverse polishing wheel (11). The longitudinal polishing wheel (12) is used for sanding the axial side wall of the commutator. The inner polishing wheel (15) is arranged outside the follower cylinder (10) at the rearmost side. The inner polishing wheel (15) is used for sanding the inner wall of the commutator after the hook is turned outwards.

4. The sanding device for the commutator hook according to claim 1, characterized in that: A driven wheel (27) is sleeved at the bottom of the transmission cylinder (25). A driving wheel (39) is meshed with the driven wheel (27). The driving wheel (39) is arranged on the output shaft of a second motor (8) below the outwards-turning press head (14).

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