Automatic grinding device for motor shaft

Abstract

The automatic grinding device comprises a base, a clamping mechanism is arranged on the base, the clamping mechanism comprises a contraction mechanism, a double-shaft motor, an inner sleeve, a driving wheel, a follower wheel, a rotating sleeve, a follower spring and a fixing bolt, the contraction mechanism is connected to the base and the extending end of the double-shaft motor in a matched mode, and the inner sleeve is arranged on the inner sleeve. The inner sleeve is fixedly installed on the outer wall of the double-shaft motor, the clamping mechanism is composed of the double-shaft motor, the inner sleeve, driving wheels, follower wheels, a rotating sleeve, a follower spring, a fixing bolt and the like, the inner sleeve is fixed to the outer wall of the double-shaft motor to provide support for the whole, and the driving wheels are installed at the two ends of the inner sleeve to form power transmission; the follow-up springs are evenly distributed between the side wall of the inner sleeve and the inner wall of the rotating sleeve to provide elastic support, the follow-up wheel and the driving wheel form flexible meshing transmission, an embedded groove in the rotating sleeve is matched with a fixing bolt to achieve force adjustment, and multi-stage clamping force is provided through the combined design of the reinforcing sleeve, the inner ring and the outer ring.

Description

Technical Field

[0001] The invention relates to the technical field of motor shaft grinding, and more particularly to an automatic grinding device for a motor shaft. Background Art

[0002] In the current mechanical processing field, precision machining of motor shafts is a key link to ensure motor performance. However, existing motor shaft grinding devices have technical defects in actual application, which are mainly reflected in the fixation and processing of stepped shafts. Since the motor shaft has different diameters at different positions, the traditional fixing method needs to be adjusted accordingly for different diameters when fixing, which not only reduces the processing efficiency, but also may affect the grinding accuracy due to improper fixing, and even cause scratches or deformation on the workpiece surface.

[0003] More importantly, the stepped structure of the motor shaft places higher demands on the adaptability of the grinding device. The traditional fixing mechanism cannot simultaneously provide stable support for different diameter segments, which causes the workpiece to easily shake and deviate during the grinding process. The instability of this fixing effect not only affects the processing quality, but also increases the difficulty of the operator's work. Especially in situations where precision grinding is required, improper fixing may lead to substandard product quality, material waste and low production efficiency. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the problems existing in the prior art, the present invention provides an automatic grinding device for a motor shaft to solve the technical problems mentioned in the background technology.

[0005] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic grinding device for a motor shaft, comprising a base, a clamping mechanism is arranged on the base, the clamping mechanism comprises a retracting mechanism, a dual-axis motor, an inner sleeve, a driving wheel, a follower wheel, a rotating sleeve, a follower spring and a fixing bolt, the retracting mechanism is cooperatively connected to the base and the protruding end of the dual-axis motor, the inner sleeve is fixedly mounted on the outer wall of the dual-axis motor, two driving wheels are respectively mounted at both ends of the inner sleeve, a plurality of follower springs are mounted on the side wall of the inner sleeve, the plurality of follower springs are connected to the inner wall of the rotating sleeve, two follower wheels are respectively fixedly mounted at both ends of the inner wall of the rotating sleeve, a plurality of embedded grooves are opened on the side wall of the rotating sleeve, and the fixing bolts fit in the embedded grooves.

[0006] Preferably, a plurality of reinforcing sleeves are equidistantly provided on the inner wall of the rotating sleeve, each of the reinforcing sleeves is coaxially arranged with the plurality of embedded grooves, and the inner thread of the reinforcing sleeve is connected to the fixing bolt. The connection stability of the fixing bolt is ensured by the coaxial arrangement of the reinforcing sleeve and the embedded groove, the threaded connection of the reinforcing sleeve provides reliable torque transmission, and the equidistant distribution of the plurality of reinforcing sleeves realizes uniform force, thereby ensuring the stable connection between the inner sleeve and the rotating sleeve.

[0007] Preferably, the plurality of follower springs are respectively provided with a plurality of inner rings and an outer ring, and the plurality of inner rings and the outer rings and the corresponding reinforcement sleeves are coaxially arranged, and graded control of the elastic force is achieved through the layered design of the inner rings and the outer rings. The coaxial arrangement ensures the stability of movement, and the cooperation of the plurality of follower springs provides adaptive clamping force.

[0008] Preferably, two fitting rings are provided on the outer wall of the rotating sleeve, and the two fitting rings are respectively located at the two ends of the rotating sleeve. A plurality of anti-slip grooves are respectively opened on the side wall of each fitting ring. The fitting ring contacts the side wall of the motor shaft, and two-way support is provided by the setting of the fitting rings at both ends. The anti-slip grooves increase the friction of the contact surface to ensure the clamping stability.

[0009] Preferably, a plurality of guide sleeves are equidistantly provided on the outer wall of the inner sleeve, the plurality of guide sleeves and the plurality of follower springs are staggered, a plurality of guide blocks are equidistantly provided on the inner wall of the rotating sleeve, the guide blocks are slidably connected in the guide sleeves, and the guidance is achieved by the sliding cooperation between the guide sleeves and the guide blocks. The staggered arrangement avoids mutual interference and ensures the stability of the parallel motion.

[0010] Preferably, the base is provided with two slide rails, a movable seat is slidably provided on the slide rails, an adjustment frame is provided on the movable seat, and a grinding head is provided on the adjustment frame. The movement is achieved through the cooperation of the slide rails and the movable seat, thereby ensuring grinding of multiple positions.

[0011] Preferably, the retraction mechanism includes a fixed frame, a fixed motor, a driving wheel, a transmission shaft, a semicircular wheel and a one-way mechanism. The fixed motor is mounted on the side wall of the fixed frame, and the protruding end of the fixed motor is coaxially connected to the transmission shaft, the transmission shaft is rotatably connected to the fixed frame, two driving wheels are coaxially mounted at both ends of the transmission shaft, the two sides of the fixed frame are rotatably connected to the semicircular wheels, the semicircular wheels are meshed with the driving wheel, the one-way mechanism is mounted on the fixed frame, and power input is realized by driving the transmission shaft through the fixed motor. The meshing transmission of the driving wheel and the semicircular wheel ensures synchronous movement, and the fixed frame provides stable support.

[0012] Preferably, an intermediate frame and a follower frame are rotatably provided on both sides of the fixed frame, a pull plate is rotatably provided on the semicircular wheel, the pull plate rotates on the intermediate frame, a follower plate is rotatably provided on the intermediate frame, the follower plate is rotatably connected to the follower frame, the protruding ends on both sides of the dual-axis motor are respectively fixedly connected to the semicircular wheel, the intermediate frame and the follower frame, and the coordinated transmission of motion is achieved through a multi-stage rotating structure. The design of the pull plate and the follower plate ensures that all components move synchronously, and the multi-point fixation of the dual-axis motor provides stable support.

[0013] Preferably, the one-way mechanism includes a side seat, a rotating shaft, a one-way block, a ratchet and a round rod. The side seat is mounted on the side wall of the fixed frame, the rotating shaft is mounted in the side seat, the one-way block is rotatably connected to the rotating shaft, the ratchet is mounted on the transmission shaft, the one-way block is mounted with a round rod, and the ratchet is provided with a plurality of one-way grooves and round grooves. One-way control is achieved by the cooperation between the one-way block and the ratchet, and the cooperation between the round rod and the groove provides reliable locking.

[0014] Preferably, a hydraulic cylinder is fixedly provided on the side seat, a telescopic rod is provided in the hydraulic cylinder, a spring is provided on the telescopic rod, the spring is connected to the one-way block, a push rod is coaxially provided on the telescopic rod, a control force is provided by the hydraulic cylinder, a one-way limiting function is realized by the combination of the telescopic rod and the spring, and the design of the push rod ensures that bidirectional fixation can be performed.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides an automatic grinding device for a motor shaft, which has the following beneficial effects: The clamping mechanism is composed of a dual-axis motor, an internal sleeve, a driving wheel, a follower wheel, a rotating sleeve, a follower spring and fixing bolts, wherein the internal sleeve is fixed to the outer wall of the dual-axis motor to provide support for the whole, the driving wheel is installed at both ends of the internal sleeve to form power transmission, the follower spring is evenly distributed between the side wall of the internal sleeve and the inner wall of the rotating sleeve to provide elastic support, the follower wheel and the driving wheel form a flexible meshing transmission, the embedded groove on the rotating sleeve cooperates with the fixing bolt to achieve force adjustment, the combination design of the strengthening sleeve and the inner ring and the outer ring provides multi-level clamping force, the sliding cooperation of the guide sleeve and the guide block ensures parallel movement, and the anti-skid groove on the fitting ring improves the contact stability. The clamping structure is scientifically designed and has strong adaptability, which significantly improves the fixation reliability of the stepped shaft, and the contraction mechanism adopts a fixed frame, a fixed motor, a driving wheel, a transmission shaft, a semicircular wheel and The combination design of the intermediate frame and the follower frame, in which the fixed motor drives the driving wheel to rotate through the transmission shaft to form the initial power, the meshing transmission of the semicircular wheel and the driving wheel realizes synchronous contraction, and the connection between the pull plate and the follower plate ensures the coordinated movement of the intermediate frame and the follower frame. The contraction structure has a reasonable layout and coordinated movement, which effectively solves the problem of asynchronous clamping of traditional devices. The one-way mechanism is composed of a side seat, a rotating shaft, a one-way block, a ratchet and a round rod. The side seat provides an installation basis for the whole, and the rotating shaft supports the rotation of the one-way block to realize direction control. The one-way groove and round groove on the ratchet form a reliable locking mechanism with the one-way block and the round rod. The hydraulic cylinder controls the force of the one-way block through the telescopic rod and the spring. The design of the push rod realizes the two-way fixing function. The one-way structure is cleverly designed and precisely controlled, which improves the stability and reliability of the clamping system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an automatic grinding device for a motor shaft in the present invention; Figure 2 It is a schematic diagram of the structure of the fixing frame in the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the explosion structure; Figure 4 It is a structural schematic diagram of the contraction mechanism in the present invention; Figure 5 It is a schematic diagram of the structure of the inner sleeve and the rotating sleeve in the present invention; Figure 6 It is a schematic diagram of the exploded structure of the rotating sleeve and the fixing bolt in the present invention; Figure 7 It is a structural schematic diagram of the one-way mechanism in the present invention; Figure 8 It is a schematic diagram of the structure of the one-way block and the ratchet in the present invention.

[0017] In the figure: 1. base; 2. double-axis motor; 3. inner sleeve; 4. driving wheel; 5. follower wheel; 6. rotating sleeve; 7. follower spring; 8. fixing bolt; 9. embedded groove; 10. reinforcement sleeve; 11. inner ring; 12. outer ring; 13. fitting ring; 14. anti-skid groove; 15. guide sleeve; 16. guide block; 17. slide rail; 18. moving seat; 19. adjustment frame; 20. grinding head; 21. fixed frame; 22. fixed motor; 23. driving wheel; 24. transmission shaft; 25. semicircular wheel; 26. intermediate frame; 27. follower frame; 28. pull plate; 29. ​​follower plate; 30. side seat; 31. rotating shaft; 32. one-way block; 33. ratchet; 34. round rod; 35. one-way groove; 36. round groove; 37. hydraulic cylinder; 38. telescopic rod; 39. spring; 40. push rod. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0020] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0021] See also Figures 1 to 6, an automatic grinding device for a motor shaft comprises a base 1, a clamping mechanism is arranged on the base 1, the clamping mechanism comprises a contraction mechanism, a dual-axis motor 2, an internal sleeve 3, a driving wheel 4, a follower wheel 5, a rotating sleeve 6, a follower spring 7 and a fixing bolt 8, the contraction mechanism is cooperatively connected to the base 1 and the protruding end of the dual-axis motor 2, the internal sleeve 3 is fixedly mounted on the outer wall of the dual-axis motor 2, two driving wheels 4 are respectively mounted at both ends of the internal sleeve 3, a plurality of follower springs 7 are mounted on the side wall of the internal sleeve 3, a plurality of follower springs 7 are connected to the inner wall of the rotating sleeve 6, two follower wheels 5 are respectively fixedly mounted at both ends of the inner wall of the rotating sleeve 6, a plurality of embedded grooves 9 are opened on the side wall of the rotating sleeve 6, the fixing bolts 8 are fitted in the embedded grooves 9, a plurality of reinforcing sleeves 10 are equidistantly arranged on the inner wall of the rotating sleeve 6, each reinforcing sleeve 10 is coaxially arranged with a plurality of embedded grooves 9, and the reinforcing sleeve 10 is The inner thread of the strengthening sleeve 10 is connected to the fixing bolt 8, and multiple inner rings 11 and outer rings 12 are respectively provided on the multiple follower springs 7, and the multiple inner rings 11 and outer rings 12 and the corresponding strengthening sleeves 10 are coaxially arranged. Two fitting rings 13 are provided on the outer wall of the rotating sleeve 6, and the two fitting rings 13 are respectively located at the two ends of the rotating sleeve 6. A plurality of anti-slip grooves 14 are respectively opened on the side wall of each fitting ring 13, and the fitting ring 13 is in contact with the side wall of the motor shaft. A plurality of guide sleeves 15 are equidistantly provided on the outer wall of the inner sleeve 3, and the plurality of guide sleeves 15 and the plurality of follower springs 7 are staggered. A plurality of guide blocks 16 are equidistantly provided on the inner wall of the rotating sleeve 6, and the guide blocks 16 are slidably connected in the guide sleeves 15. Two slide rails 17 are provided on the base 1, and a movable seat 18 is slidably provided on the slide rail 17, and an adjusting frame 19 is provided on the movable seat 18, and a grinding head 20 is provided on the adjusting frame 19.

[0022] Working principle: when grinding the step motor shaft, first place the motor shaft to be ground between multiple fitting rings 13, and then start the fixed motor 22. Since a transmission shaft 24 is installed on the protruding end of the fixed motor 22, and the driving wheel 23 is installed on the transmission shaft 24, the driving wheel 23 will be driven to rotate accordingly. The driving wheel 23 is engaged with the semicircular wheel 25, so multiple dual-axis motors 2 will shrink synchronously. The thickest position of the motor shaft will first be against the fitting ring 13, and then continue to exert force. Since the inner sleeve 3 and the rotating sleeve 6 are connected by the follower spring 7, the follower spring 7 will be compressed, and then the follower wheel 5 on this side will move toward the direction of the driving wheel 4, and then the follower wheel 5 will engage with the driving wheel 4. At this time, the fitting ring 13 and the dual-axis motor 2 that are fitted at the thickest position are in a connected state, and the fitting rings 13 at other positions are also fitted on the motor shafts at the corresponding positions, but these The follower wheel 5 and the driving wheel 4 at the position are not in a connected state, so no rigid connection is generated during rotation. Since the diameters of the motor shaft are different at different positions, but the angular speed is the same during rotation, different linear speeds will result. If multiple fitting rings 13 are all rigidly connected, the driving effect will be affected. Therefore, only the thickest position is rigidly connected. Due to the limitation between the guide block 16 and the guide sleeve 15, the axis center of the rotating sleeve 6 and the axis center of the inner sleeve 3 are always parallel. When only one side of the fitting ring 13 is pressed on the motor shaft, it will also remain parallel. Then, the synchronous rotation of multiple dual-axis motors 2 will drive the rotation of the motor shaft, and the grinding head 20 is driven to move through the adjusting frame 19. The motor shaft at the corresponding position is polished by the grinding head 20, and the moving seat 18 is slidably connected to the slide rail 17 to drive the grinding head 20 to move horizontally, thereby completing the grinding process.

[0023] When it is necessary to change the fixing strength of the fitting ring 13 and the motor shaft, first select fixing bolts 8 of different lengths according to the situation, and then thread the fixing bolts 8 into the reinforcing sleeve 10 and the corresponding inner ring 11 or outer ring 12. Through the connection of the fixing bolts 8, the connected position is in a fixed state, and only the follower spring 7 that is not in a fixed state can participate in generating elastic force. Since the more connections are made, the greater the stiffness coefficient is, the clamping force generated by the connection to the inner ring 11 is greater than the clamping force of the outer ring 12, so that the clamping force can be adjusted, thereby completing the use process.

[0024] To achieve synchronous clamping, add a retraction mechanism, see Figure 3 to Figure 4The contraction mechanism includes a fixed frame 21, a fixed motor 22, a driving wheel 23, a transmission shaft 24, a semicircular wheel 25 and a one-way mechanism. The fixed motor 22 is installed on the side wall of the fixed frame 21, and the protruding end of the fixed motor 22 is coaxially connected to the transmission shaft 24, and the transmission shaft 24 is rotatably connected to the fixed frame 21. Two driving wheels 23 are coaxially installed at both ends of the transmission shaft 24. The two sides of the fixed frame 21 are respectively rotatably connected to the semicircular wheels 25, and the semicircular wheels 25 are meshed on the driving wheels 23. The one-way mechanism is installed on the fixed frame 21. The two sides of the fixed frame 21 are respectively rotatably provided with an intermediate frame 26 and a follower frame 27. A pull plate 28 is rotatably provided on the semicircular wheel 25, and the pull plate 28 rotates on the intermediate frame 26. A follower plate 29 is rotatably provided on the intermediate frame 26, and the follower plate 29 is rotatably connected to the follower frame 27. The protruding ends on both sides of the dual-axis motor 2 are respectively fixedly connected to the semicircular wheel 25, the intermediate frame 26 and the follower frame 27.

[0025] Working principle: When fixing the motor shaft, first, the rotation of the fixed motor 22 will drive the rotation of the driving wheel 23, and then the driving wheel 23 drives the two semicircular wheels 25 to rotate. Due to the action of the pull plate 28 and the follower plate 29, the intermediate frame 26 and the follower frame 27 are driven to rotate synchronously, and the protruding ends of the dual-axis motor 2 are respectively fixed on the semicircular wheel 25, the intermediate frame 26 and the follower frame 27, so that the three dual-axis motors 2 can be driven to be pressed on the motor shaft synchronously, and then the dual-axis motor 2 drives the rotation of the motor shaft, thereby completing the fixing process.

[0026] See also Figure 7 to Figure 8 In order to achieve stability after fixation, a one-way mechanism is added, which includes a side seat 30, a rotating shaft 31, a one-way block 32, a ratchet 33 and a round rod 34. The side seat 30 is installed on the side wall of the fixed frame 21, the rotating shaft 31 is installed in the side seat 30, the one-way block 32 is rotatably connected to the rotating shaft 31, the ratchet 33 is installed on the transmission shaft 24, the one-way block 32 is installed with a round rod 34, and the ratchet 33 is provided with a plurality of one-way grooves 35 and round grooves 36. A hydraulic cylinder 37 is fixedly provided on the side seat 30, a telescopic rod 38 is provided in the hydraulic cylinder 37, a spring 39 is provided on the telescopic rod 38, the spring 39 is connected to the one-way block 32, and a top is coaxially provided on the telescopic rod 38.

[0027] Working principle: After the clamping process is completed by multiple dual-axis motors 2, it is necessary to maintain a fixed state. At this time, the one-way block 32 is stuck in the one-way groove 35 and the round rod 34 is stuck in the round groove 36 under the action of the hydraulic cylinder 37. When only one-way fixation is required, the push rod 40 should not contact the one-way block 32. At this time, the one-way block 32 can rotate, so only the ratchet 33 will be limited in one direction. When two-way fixation is required, the hydraulic cylinder 37 drives the push rod 40 to press on the one-way block 32, so that the round rod 34 is fixed in the round groove 36, so that two-way fixation can be achieved. The cooperation of the hydraulic cylinder 37 and the fixed motor 22 can ensure the stability of the clamping.

[0028] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic grinding device for a motor shaft, comprising a base (1), characterized in that: The base (1) is provided with a clamping mechanism, the clamping mechanism comprising a retracting mechanism, a dual-axis motor (2), an inner sleeve (3), a driving wheel (4), a follower wheel (5), a rotating sleeve (6), a follower spring (7) and a fixing bolt (8); the retracting mechanism is cooperatively connected to the base (1) and the protruding end of the dual-axis motor (2); the inner sleeve (3) is fixedly mounted on the outer wall of the dual-axis motor (2); two driving wheels (4) are respectively mounted on the two ends of the inner sleeve (3); a plurality of follower springs (7) are mounted on the side wall of the inner sleeve (3); the plurality of follower springs (7) are connected to the inner wall of the rotating sleeve (6); two follower wheels (5) are respectively fixedly mounted on the two ends of the inner wall of the rotating sleeve (6); a plurality of inner grooves (9) are opened on the side wall of the rotating sleeve (6); the fixing bolts (8) fit into the inner grooves (9).

2. The automatic grinding device for a motor shaft according to claim 1, characterized in that: A plurality of reinforcing sleeves (10) are equidistantly arranged on the inner wall of the rotating sleeve (6), each of the reinforcing sleeves (10) being coaxially arranged with the plurality of embedded grooves (9), and the inner thread of the reinforcing sleeve (10) is connected to the fixing bolt (8).

3. The automatic grinding device for a motor shaft according to claim 2, characterized in that: A plurality of inner rings (11) and an outer ring (12) are respectively provided on the plurality of follower springs (7), and the plurality of inner rings (11) and the outer rings (12) and the corresponding reinforcing sleeves (10) are coaxially arranged.

4. The automatic grinding device for a motor shaft according to claim 1, characterized in that: Two fitting rings (13) are provided on the outer wall of the rotating sleeve (6), and the two fitting rings (13) are respectively located at two ends of the rotating sleeve (6). A plurality of anti-slip grooves (14) are respectively provided on the side wall of each fitting ring (13), and the fitting ring (13) contacts the side wall of the motor shaft.

5. The automatic grinding device for a motor shaft according to claim 1, characterized in that: A plurality of guide sleeves (15) are equidistantly arranged on the outer wall of the inner sleeve (3), and the plurality of guide sleeves (15) and the plurality of follower springs (7) are arranged in a staggered manner. A plurality of guide blocks (16) are equidistantly arranged on the inner wall of the rotating sleeve (6), and the guide blocks (16) are slidably connected in the guide sleeves (15).

6. The automatic grinding device for a motor shaft according to claim 1, characterized in that: The base (1) is provided with two slide rails (17), a movable seat (18) is slidably provided on the slide rails (17), an adjustment frame (19) is provided on the movable seat (18), and a grinding head (20) is provided on the adjustment frame (19).

7. The automatic grinding device for a motor shaft according to claim 1, characterized in that: The retracting mechanism comprises a fixed frame (21), a fixed motor (22), a driving wheel (23), a transmission shaft (24), a semicircular wheel (25) and a one-way mechanism. The fixed motor (22) is mounted on a side wall of the fixed frame (21), and the protruding end of the fixed motor (22) is coaxially connected to the transmission shaft (24). The transmission shaft (24) is rotatably connected to the fixed frame (21). Two driving wheels (23) are coaxially mounted on both ends of the transmission shaft (24). Both sides of the fixed frame (21) are rotatably connected to the semicircular wheels (25). The semicircular wheels (25) are meshed with the driving wheel (23). The one-way mechanism is mounted on the fixed frame (21).

8. The automatic grinding device for a motor shaft according to claim 7, characterized in that: An intermediate frame (26) and a follower frame (27) are rotatably provided on both sides of the fixed frame (21), a pull plate (28) is rotatably provided on the semicircular wheel (25), the pull plate (28) is rotatably provided on the intermediate frame (26), a follower plate (29) is rotatably provided on the intermediate frame (26), the follower plate (29) is rotatably connected to the follower frame (27), and the extended ends on both sides of the double-axis motor (2) are fixedly connected to the semicircular wheel (25), the intermediate frame (26) and the follower frame (27), respectively.

9. The automatic grinding device for a motor shaft according to claim 7, characterized in that: The one-way mechanism comprises a side seat (30), a rotating shaft (31), a one-way block (32), a ratchet (33) and a round rod (34); the side seat (30) is mounted on a side wall of a fixing frame (21); the rotating shaft (31) is mounted in the side seat (30); the one-way block (32) is rotatably connected to the rotating shaft (31); the ratchet (33) is mounted on a transmission shaft (24); the round rod (34) is mounted on the one-way block (32); and a plurality of one-way grooves (35) and round grooves (36) are formed on the ratchet (33).

10. The automatic grinding device for a motor shaft according to claim 9, characterized in that: A hydraulic cylinder (37) is fixedly provided on the side seat (30), a telescopic rod (38) is provided inside the hydraulic cylinder (37), a spring (39) is provided on the telescopic rod (38), the spring (39) is connected to the one-way block (32), and a push rod (40) is coaxially provided on the telescopic rod (38).

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