Polishing device for motor shaft production

Abstract

The invention provides a motor shaft production polishing device, and relates to the technical field of motor shaft polishing, the motor shaft production polishing device comprises a synchronous table slidably connected to a transverse table, a threaded block is fixedly mounted on the transverse table, a differential lead screw is rotatably connected to the synchronous table in a limiting manner, and the two ends of the differential lead screw are provided with a coarse thread and a fine thread respectively; the differential lead screw at the fine thread position is in threaded connection with a threaded block, the differential lead screw at the coarse thread position is in threaded connection with a sliding table, the sliding table is connected to the transverse table in a sliding mode, a top block is installed on the sliding table, and two universal balls are rotatably installed in a follow-up sleeve. Through cooperation of the thick thread and the thin thread, synchronous movement of the polishing wheel and the supporting structure is achieved, through the design, the stability of a workpiece in the polishing process is guaranteed, reliable machining support is provided for motor shafts with different diameters through the supporting effect of the universal ball, and the polishing quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor shaft polishing, and more particularly to a motor shaft production polishing device. Background Art

[0002] In the field of motor manufacturing and maintenance, the polishing process of the motor shaft is a key link in ensuring its performance. During the polishing operation, the first step is to firmly limit and fix the motor shaft, which is directly related to the quality and precision of the subsequent grinding process. However, the specifications of motor shafts vary significantly. From the thin shafts of micro motors to the thick shafts of high-power motors, the diameters may differ by several times. This huge difference in size determines that the clamping force must be adjusted accordingly: motor shafts with larger diameters require stronger clamping force to ensure their stability during processing due to their own weight and the greater forces they are subjected to during processing; while motor shafts with smaller diameters require relatively gentle clamping force to prevent excessive clamping from causing shaft deformation or surface damage.

[0003] The common motor shaft polishing equipment on the market currently has obvious technical defects in clamping force adjustment. Most equipment uses a simple mechanical clamping mechanism and lacks precise force adjustment function. Operators often need to rely on experience to estimate the required clamping force. This extensive adjustment method is not only inefficient, but also prone to problems with improper clamping force: for thin shafts, excessive clamping force will cause permanent deformation or even breakage; for thick shafts, insufficient clamping force may cause the workpiece to shake or fall off during processing, which not only affects the processing quality but may also cause safety hazards. The limitations of this adjustment mechanism seriously restrict the improvement of processing efficiency, but also increase the work difficulty and psychological burden of operators, ultimately affecting the operating efficiency of the entire production line and the stability of product quality. Summary of the Invention

[0004] (1) Technical problems solved In view of the problems existing in the prior art, the present invention provides a motor shaft production polishing device to solve the technical problems mentioned in the background technology.

[0005] (2) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a motor shaft production and polishing device, comprising a fixed base and a horizontal table slidably connected to the base; also comprising a synchronization mechanism, the synchronization mechanism comprising a synchronization table slidably connected to the horizontal table, a threaded block fixedly installed on the horizontal table, a differential screw connected to the upper limit rotation on the synchronization table, coarse threads and fine threads respectively provided at both ends of the differential screw, the differential screw in the fine thread position is threadedly connected to the threaded block, and the differential screw in the coarse thread position is threadedly connected to the slide, the slide is slidably connected to the horizontal table, a top block is installed on the slide, a follower sleeve is slidably installed in the top block, and two universal balls are rotatably installed in the follower sleeve; also comprising a fixing mechanism, the fixing mechanism comprising a lateral sleeve installed on the side wall of the horizontal table, and a push rod is slidably connected in the lateral sleeve.

[0006] Preferably, the pitch of the coarse thread is twice the pitch of the fine thread, and the coarse thread and the fine thread are set in the same direction. This differential thread design realizes the coordinated movement of the slide and the synchronous table through the precise matching of the pitch ratio. The same direction setting of the coarse and fine threads ensures the consistency of the movement direction, and the double pitch design realizes precise speed matching, so that the support structure and the polishing wheel can contact the workpiece synchronously.

[0007] Preferably, the synchronization mechanism also includes a synchronous motor installed on the synchronization table, and the synchronous motor and the differential screw are respectively installed with synchronous wheels, and the two synchronous wheels are respectively meshed with belts installed. The transmission system of the synchronous wheels and belts driven by the synchronous motor ensures the smoothness and accuracy of the rotation of the differential screw.

[0008] Preferably, a telescopic frame is installed on the follower sleeve, a guide rod is installed on the telescopic frame, the guide rod is slidably connected to the slide, a plurality of tension springs are installed at equal intervals on the telescopic frame, and the other ends of the plurality of tension springs are connected to the horizontal platform. This multiple guide and elastic support structure ensures the stability and accuracy of the movement.

[0009] Preferably, two stop sleeves are respectively installed on the multiple tension springs, and a two-way rod is slidably connected in each stop sleeve, and an intermediate ring is fixedly installed in each stop sleeve, and return springs are respectively installed on both sides of the intermediate ring. The return springs are in contact with the two-way rod through the cooperation design of the stop sleeve and the two-way rod.

[0010] Preferably, a polishing motor is installed on the synchronous table, a transmission shaft is rotatably installed on the synchronous table, and a polishing wheel is detachably installed on the transmission shaft, and a transmission belt is meshed and connected between the transmission shaft and the polishing motor. This power transmission system ensures the smoothness of the polishing process through the flexible transmission characteristics of the transmission belt.

[0011] Preferably, a follower motor is installed on the base, and a clamp is installed on the base, a retaining sleeve is installed on the protruding end of the follower motor, a hydraulic cylinder is installed on the clamp, and a retaining sleeve is rotatably installed on the protruding end of the hydraulic cylinder, and the motor shaft is clamped on the two retaining sleeves. Through the cooperation of the follower motor and the hydraulic cylinder, precise positioning and stable clamping of the workpiece are achieved, and the adjustable force characteristic of the hydraulic cylinder ensures adaptability to workpieces of different specifications.

[0012] Preferably, the fixing mechanism further comprises a lateral hole and an insertion hole provided on the sliding platform, a lateral sleeve is mounted on the transverse platform, the push rod is slidably connected in the lateral hole, and the lateral hole and the insertion hole are coaxially arranged.

[0013] Preferably, a telescopic rod is slidably installed in the lateral sleeve, the push rod is coaxially connected to the telescopic rod, a handle is installed on the side of the telescopic rod away from the push rod, a plurality of elastic sheets are evenly spaced on the inner wall of the lateral sleeve, a reinforcing rod is installed on each of the elastic sheets, a plurality of gradient grooves are evenly spaced on the side wall of the telescopic rod, the reinforcing rod is in contact with the gradient groove, a plurality of vertical grooves corresponding to the reinforcing rods are evenly spaced on the side wall of the telescopic rod, the vertical grooves are connected to the gradient groove, and the one-way locking and convenient unlocking functions of the telescopic rod are realized by the cooperation of the elastic sheet, the reinforcing rod and the gradient groove, and the design of the vertical groove provides a convenient channel for the unlocking operation.

[0014] (3) Beneficial effects Compared with the prior art, the present invention provides a motor shaft production polishing device with the following beneficial effects: The device adopts a unique differential screw mechanism, which realizes the synchronous movement of the polishing wheel and the support structure through the coordination of coarse and fine threads. This design not only ensures the stability of the workpiece during the polishing process, but also provides reliable processing support for motor shafts of different diameters through the support of the universal ball, thereby improving the polishing quality.

[0015] Through the coordinated work of the telescopic frame and the tension spring, the device can automatically adjust the clamping force according to the diameter of the motor shaft. When processing a thicker motor shaft, the system automatically generates a larger clamping force; for a smaller motor shaft, the clamping force is reduced accordingly. This adaptive force control mechanism effectively prevents deformation and damage to the workpiece while ensuring processing accuracy.

[0016] By changing the effective working number of the tension spring, the tension generated under the same displacement can be adjusted. This design enables operators to quickly adjust the appropriate support force according to the requirements of motor shafts of different specifications, improving the adaptability and operational convenience of the equipment.

[0017] This design solves the shortcomings of traditional motor shaft polishing equipment in adaptability, precision and convenience, improves the processing quality and production efficiency of motor shafts, and provides a reliable technical solution for the motor manufacturing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a motor shaft production and polishing device in the present invention; Figure 2 Schematic diagram of the explosion structure of the transverse platform and the synchronous platform in the present invention; Figure 3 Schematic diagram of the structure of the transverse platform and the sliding platform in the present invention; Figure 4 Schematic diagram of the structure of the telescopic frame and the tension spring in the present invention; Figure 5 Schematic diagram of the cross-sectional structure of the slide and the stop sleeve in the present invention; Figure 6 It is a schematic cross-sectional structural diagram of the stop sleeve in the present invention; Figure 7 Schematic diagram of the cross-sectional structure of the side cover of the present invention; Figure 8 Schematic diagram of the structure of the telescopic rod and the push rod in the present invention; Figure 9 It is a schematic structural diagram of the elastic sheet and the reinforcing rod in the present invention.

[0019] In the figure: 11, base; 12, horizontal table; 21, synchronous table; 22, thread block; 23, differential screw; 24, coarse thread; 25, fine thread; 26, slide; 27, top block; 28, follower sleeve; 29, universal ball; 32, push rod; 33, lateral hole; 34, insertion hole; 35, lateral sleeve; 36, telescopic rod; 37, handle; 38, elastic sheet; 39, reinforcement rod; 210, synchronous motor; 211, synchronous Step wheel; 212, belt; 213, telescopic frame; 214, guide rod; 215, tension spring; 216, stop sleeve; 217, two-way rod; 218, intermediate ring; 219, return spring; 220, polishing motor; 221, transmission shaft; 222, polishing wheel; 223, transmission belt; 224, follow-up motor; 225, clamp; 226, retaining sleeve; 227, hydraulic cylinder; 310, gradient groove; 311, vertical groove. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this 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.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0022] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect 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.

[0023] See also Figures 1 to 9A motor shaft production and polishing device includes a fixed base 11 and a horizontal table 12 slidably connected to the base 11; it also includes a synchronization mechanism, the synchronization mechanism includes a synchronization table 21 slidably connected to the horizontal table 12, a threaded block 22 is fixedly installed on the horizontal table 12, and the synchronization table 21 is connected to the upper limit rotation with a differential screw 23, and the two ends of the differential screw 23 are respectively provided with a coarse thread 24 and a fine thread 25. The differential screw 23 at the position of the fine thread 25 is threadedly connected to the threaded block 22, and the differential screw 23 at the position of the coarse thread 24 is threadedly connected to the slide 26 The slide 26 is slidably connected to the horizontal platform 12, and a top block 27 is installed on the slide 26. A follower sleeve 28 is slidably installed in the top block 27. Two universal balls 29 are rotatably installed in the follower sleeve 28. The pitch of the coarse thread 24 is twice the pitch of the fine thread 25, and the coarse thread 24 and the fine thread 25 are set in the same direction. The synchronization mechanism also includes a synchronous motor 210 installed on the synchronous platform 21, and synchronous wheels 211 are respectively installed on the synchronous motor 210 and the differential screw 23. Belts 212 are respectively engaged and installed on the two synchronous wheels 211. A telescopic frame is installed on the follower sleeve 28. 213, a guide rod 214 is installed on the telescopic frame 213, and the guide rod 214 is slidably connected to the slide 26. A plurality of tension springs 215 are installed at equal intervals on the telescopic frame 213, and the other ends of the plurality of tension springs 215 are connected to the horizontal platform 12. Two stop sleeves 216 are respectively installed on the plurality of tension springs 215, and a two-way rod 217 is slidably connected in each stop sleeve 216, and an intermediate ring 218 is fixedly installed in each stop sleeve 216. Return springs 219 are respectively installed on both sides of the intermediate ring 218. The return spring 219 contacts the two-way rod 217, and the synchronous platform A polishing motor 220 is installed on 21, a transmission shaft 221 is rotatably installed on the synchronous table 21, and a polishing wheel 222 is detachably installed on the transmission shaft 221, a transmission belt 223 is meshed and connected between the transmission shaft 221 and the polishing motor 220, a follower motor 224 is installed on the base 11, and a clamper 225 is installed on the base 11, a retaining sleeve 226 is installed on the protruding end of the follower motor 224, a hydraulic cylinder 227 is installed on the clamper 225, and a retaining sleeve 226 is rotatably installed on the protruding end of the hydraulic cylinder 227, and the motor shaft is clamped on the two retaining sleeves 226.

[0024] When polishing motor shafts of different models, since the hydraulic cylinder 227 can be retracted, the two ends of the motor shaft can be respectively clamped in the retaining sleeve 226, and then the rotation of the motor shaft is driven by the follower motor 224, thereby cooperating with the polishing wheel 222 to perform the polishing process. When polishing the motor shaft, it is first necessary to fit the polishing wheel 222 onto the motor shaft, and the two universal balls 29 on the opposite side are synchronously pressed against the side walls of the motor shaft. The rotation of the synchronous motor 210 and the two synchronous wheels 211 and the belt 212 can drive the rotation of the differential screw 23. Since the differential screw 23 is limitedly rotated and connected to the synchronous table 21, and the position of the fine thread 25 is threadedly connected to the threaded block 22, as the differential screw 23 rotates, the synchronous table 21 is driven to move toward the motor shaft, thereby also driving the polishing wheel 222 to move synchronously toward the motor shaft, and the differential screw 23 also moves synchronously. At this time, the process of the polishing wheel 222 moving toward the motor shaft is completed. The state of the differential screw 23 is that it moves toward the direction of the motor shaft while rotating. Since the differential screw 23 is connected to the slide 26, it will push the slide 26 to move horizontally at the same speed. However, the coarse thread 24 of the differential screw 23 is threadedly connected to the slide 26, and is set as the same direction thread, so it will drive the slide 26 to approach the motor shaft on the other side. Since the pitch of the coarse thread 24 is twice that of the fine thread 25, the speed at which the slide 26 moves toward the motor shaft through the coarse thread 24 is twice that of the differential screw 23, but the speed at which the differential screw 23 pushes the slide 26 to move outward must be subtracted. After subtracting the two speeds, the speed at which the sleeve approaches the motor shaft is the same as the speed at which the polishing wheel 222 approaches the motor shaft, and the initial positions are the same, so the two will move synchronously toward the motor shaft. When the polishing wheel 222 is attached to the side wall of the motor shaft, the two universal balls 29 are also synchronously attached to the side wall of the motor shaft, thereby producing a supporting effect on polishing and ensuring the quality of polishing.

[0025] The fixing mechanism includes a lateral sleeve 35 installed on the side wall of the horizontal platform 12, and a push rod 32 is slidably connected in the lateral sleeve 35. The fixing mechanism also includes a lateral hole 33 and an insertion hole 34 opened on the slide 26. A lateral sleeve 35 is installed on the horizontal platform 12, and the push rod 32 is slidably connected in the lateral hole 33. The lateral hole 33 and the insertion hole 34 are coaxially arranged. A telescopic rod 36 is slidably installed in the lateral sleeve 35, and the push rod 32 is coaxially connected to the telescopic rod 36. A handle 37 is installed on the side of the retractable rod 36 away from the push rod 32, and a plurality of elastic sheets 38 are installed at equal intervals on the inner wall of the lateral sleeve 35. A reinforcing rod 39 is installed on each elastic sheet 38. A plurality of gradient grooves 310 are opened at equal intervals on the side wall of the telescopic rod 36, and the reinforcing rod 39 abuts against the gradient grooves 310. A plurality of vertical grooves 311 corresponding to the reinforcing rods 39 are opened at equal intervals on the side wall of the telescopic rod 36, and the vertical grooves 311 are connected to the gradient grooves 310.

[0026] Since the top block 27 is on the telescopic frame 213, when the slide 26 is away from the motor shaft, the telescopic frame 213 will be driven to move outward synchronously, and the tension spring 215 will be driven to pull outward. The larger the diameter of the motor shaft is, the farther it is pulled, and the greater the tension generated. When the motor shaft is smaller, the tension spring 215 moves less, so the tension becomes smaller. As the universal ball 29 and the polishing wheel 222 approach the motor shaft synchronously, when the universal ball 29 is attached to the motor shaft and the polishing wheel 222 is also attached to the side wall of the motor shaft, the top block 27 no longer contacts the telescopic frame 213, and then the tension is applied by the tension spring 215. Therefore, the thicker the motor shaft, the greater the tension will be applied, thereby ensuring the stability of the polishing.

[0027] When the tension generated by the tension spring 215 under the same displacement needs to be changed, it is only necessary to change the number of coils that the tension spring 215 can extend and retract. The fewer the number of coils that can be extended, the greater the tension generated under the same displacement. When the number of coils needs to be changed, it is only necessary to fix different stop sleeves 216 on the slide 26 to change the number of coils that the tension spring 215 can extend and retract. By pushing the push rod 32 so that the push rod 32 is against the two-way rod 217, the push rod 32 is inserted into the stop sleeve 216, and the two-way rod 217 is rotated. 17 is inserted into the insertion hole 34, and then the corresponding stop sleeve 216 and the slide 26 are limited. At this time, the tension generated by the tension spring 215 under the same displacement can be changed, thereby completing the tension adjustment process. When it is necessary to release the connection between the two-way rod 217 and the insertion hole 34, it is only necessary to loosen the interference between the push rod 32 and the two-way rod 217. Since the middle ring 218 is connected to the stop sleeve 216, the return of the two-way rod 217 is guaranteed under the action of the return spring 219 to ensure the release process.

[0028] When the push rod 32 needs to be pushed outward, it is only necessary to push the telescopic rod 36 and then the reinforcing rod 39 on the elastic sheet 38 will be stuck in the gradient groove 310, thereby completing the one-way clamping process. At this time, only one-way movement can ensure the clamping process. When the connection needs to be released, the handle 37 is turned to make the reinforcing rod 39 expand along the gradient groove 310, so that the reinforcing rod 39 moves toward the inner wall of the side sleeve until the reinforcing rod 39 slides into the vertical groove 311. At this time, the telescopic rod 36 can be pulled outward and then the push rod 32 will be driven to move outward, thereby releasing the connection between the push rod 32 and the reinforcing rod 39, and then completing the release process.

[0029] In all the schemes mentioned above, the connection between the two parts can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be described here one by one. In the above, all fixed connections are preferably considered to be welding. 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 principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor shaft production polishing device, comprising a fixed base (11) and a transverse platform (12) slidably connected to the base (11); characterized in that: The invention also includes a synchronization mechanism, wherein the synchronization mechanism includes a synchronization platform (21) slidably connected to the horizontal platform (12), a threaded block (22) is fixedly installed on the horizontal platform (12), and the synchronization platform (21) is connected to a differential screw (23) for upper limit rotation, and the two ends of the differential screw (23) are respectively provided with a coarse thread (24) and a fine thread (25), and the differential screw (23) in the position of the fine thread (25) is threadedly connected to the threaded block (22), and the differential screw (23) in the position of the coarse thread (24) is threadedly connected to the threaded block (22). 23) is threadedly connected to the slide (26), the slide (26) is slidably connected to the transverse platform (12), a top block (27) is installed on the slide (26), a follower sleeve (28) is slidably installed in the top block (27), and two universal balls (29) are rotatably installed in the follower sleeve (28); it also includes a fixing mechanism, the fixing mechanism includes a lateral sleeve (35) installed on the side wall of the transverse platform (12), and a push rod (32) is slidably connected in the lateral sleeve (35).

2. The motor shaft production polishing device according to claim 1, characterized in that: The pitch of the coarse thread (24) is twice the pitch of the fine thread (25), and the coarse thread (24) and the fine thread (25) are arranged in the same direction.

3. The motor shaft production polishing device according to claim 2, characterized in that: The synchronization mechanism further comprises a synchronous motor (210) mounted on the synchronization platform (21), synchronous wheels (211) are respectively mounted on the synchronous motor (210) and the differential screw (23), and belts (212) are respectively mounted on the two synchronous wheels (211) in meshing engagement.

4. The motor shaft production polishing device according to claim 3, characterized in that: A telescopic frame (213) is installed on the follower sleeve (28), a guide rod (214) is installed on the telescopic frame (213), the guide rod (214) is slidably connected to the slide (26), and a plurality of tension springs (215) are installed on the telescopic frame (213) at equal intervals, and the other ends of the plurality of tension springs (215) are connected to the horizontal platform (12).

5. The motor shaft production polishing device according to claim 4, characterized in that: Two stop sleeves (216) are respectively installed on the plurality of tension springs (215), and a bidirectional rod (217) is slidably connected in each of the stop sleeves (216), and an intermediate ring (218) is fixedly installed in each of the stop sleeves (216), and return springs (219) are respectively installed on both sides of the intermediate ring (218), and the return springs (219) are in contact with the bidirectional rod (217).

6. The motor shaft production polishing device according to claim 5, characterized in that: A polishing motor (220) is mounted on the synchronization platform (21), a transmission shaft (221) is rotatably mounted on the synchronization platform (21), a polishing wheel (222) is detachably mounted on the transmission shaft (221), and a transmission belt (223) is meshedly connected between the transmission shaft (221) and the polishing motor (220).

7. The motor shaft production polishing device according to claim 6, characterized in that: A follower motor (224) is mounted on the base (11), and a clamp (225) is mounted on the base (11). A retaining sleeve (226) is mounted on the protruding end of the follower motor (224). A hydraulic cylinder (227) is mounted on the clamp (225), and a retaining sleeve (226) is rotatably mounted on the protruding end of the hydraulic cylinder (227). The motor shaft is clamped on the two retaining sleeves (226).

8. The motor shaft production polishing device according to claim 1, characterized in that: The fixing mechanism further comprises a lateral hole (33) and an insertion hole (34) provided on the slide (26); a lateral sleeve (35) is mounted on the transverse platform (12); the push rod (32) is slidably connected in the lateral hole (33); and the lateral hole (33) and the insertion hole (34) are coaxially arranged.

9. The motor shaft production polishing device according to claim 8, characterized in that: A telescopic rod (36) is slidably installed in the lateral sleeve (35), the push rod (32) is coaxially connected to the telescopic rod (36), and a handle (37) is installed on the side of the telescopic rod (36) away from the push rod (32). A plurality of elastic sheets (38) are evenly spaced on the inner wall of the lateral sleeve (35), and a reinforcing rod (39) is respectively installed on each of the elastic sheets (38). A plurality of gradient grooves (310) are evenly spaced on the side wall of the telescopic rod (36), and the reinforcing rod (39) is abutted in the gradient groove (310). A plurality of vertical grooves (311) corresponding to the reinforcing rod (39) are evenly spaced on the side wall of the telescopic rod (36), and the vertical grooves (311) are connected to the gradient groove (310).

Images