A motor rotor polishing device

Abstract

This invention provides a motor rotor polishing device, including a housing, a worktable, a polishing unit, a gear ring, and a drive mechanism. The polishing unit includes a reciprocating lead screw, a sliding seat, and a polishing mechanism. The polishing mechanism includes a movable component slidably mounted radially on the sliding seat, a limiting member for constraining the movement range of the movable component, at least two tension adjusting rollers disposed on both sides of the movable component and slidable radially, and an abrasive belt tensioned around the movable component and the tension adjusting rollers. This polishing mechanism can adaptively adjust, and the abrasive belt can form a full-contact fit with the rotor surface to be polished, improving uniformity and preventing slippage during polishing, thus ensuring the stability of the polishing process. The reciprocating lead screw meshes with the gear ring through a transmission gear. When the polishing mechanism performs circumferential polishing, the reciprocating lead screw rotates under the action of the gear ring, driving the polishing mechanism to reciprocate axially, effectively solving the polishing mark problem.

Description

Technical Field

[0001] This invention belongs to the field of motor rotor processing technology, and specifically relates to a motor rotor polishing device. Background Technology

[0002] As the core device for converting electrical energy into mechanical energy, the performance of the electric motor directly affects the operating efficiency of the equipment. The rotor, as a key moving component of the motor, has particularly important surface quality. Currently, rotor cores are mostly manufactured using stamping processes, but this process easily produces defects such as protrusions and burrs on the surface, necessitating precision polishing.

[0003] Existing rotor polishing technologies are mainly divided into two categories: wheel polishing and belt polishing. While wheel polishing is highly efficient, its rigid contact characteristics make it difficult to adapt to the complex geometry of the rotor surface, easily leading to uneven polishing. In contrast, while belt polishing offers some flexibility, it still suffers from the following significant drawbacks: First, insufficient contact adaptability: the sanding belt cannot fully adhere to the rotor surface, resulting in polishing blind spots and uneven pressure distribution.

[0004] Secondly, the polishing stability is poor: the abrasive belt is prone to deviation and vibration when running at high speed, affecting the polishing accuracy. At the same time, rapid local wear of the abrasive belt will lead to a decrease in polishing efficiency, requiring frequent replacement.

[0005] Third, uniformity is difficult to guarantee: the unidirectional linear motion mode of the abrasive belt cannot achieve full coverage, easily resulting in polishing streaks. In the rotor edge area, uneven polishing often occurs due to the sharp reduction in contact area.

[0006] Fourth, dust control is difficult: a large amount of metal dust generated during the polishing process can easily enter the internal cavity of the rotor, which not only increases the difficulty of cleaning, but also pollutes the working environment. Summary of the Invention

[0007] The purpose of this invention is to provide a novel polishing device suitable for motor rotors, which can adapt to the complex morphology of the rotor and achieve a uniform and stable polishing effect.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: This invention provides a motor rotor polishing device, comprising: The shell has a polishing chamber, a dust collection chamber, and a dust removal channel connecting the two and equipped with an air extraction device inside. A workbench is located inside the polishing chamber and is rotatably disposed on the outer wall of the dust removal channel about a first axis. The polishing unit is located on the worktable and includes a reciprocating screw arranged parallel to the first axis, a sliding seat body that is connected to the reciprocating screw body via a threaded pair, and a polishing mechanism located on the sliding seat body. The polishing mechanism includes a movable component that is slidably disposed on the sliding seat in the radial direction, a limiting member for constraining the movement range of the movable component, at least two tension adjusting rollers disposed on both sides of the movable component and slidable in the radial direction, and an abrasive cloth belt that surrounds the movable component and the tension adjusting rollers and is tensioned. The inner side of the movable component is a polishing surface that matches the curvature of the rotor, and the outer side is provided with anti-slip texture. When the polishing mechanism comes into contact with the rotor, the tension of the abrasive belt drives the tension adjusting roller to move inward, so that the abrasive belt fits tightly against the rotor surface, and at the same time pushes the movable component to slide outward radially, so that the outer side of the movable component abuts against the abrasive belt. A gear ring is disposed in the housing, and a transmission gear that meshes with the gear ring is provided at the end of the reciprocating lead screw; and, The drive mechanism is used to drive the worktable to rotate. When the worktable rotates, the reciprocating lead screw rotates under the action of the gear ring, driving the sliding seat and polishing mechanism to reciprocate along the axial direction.

[0009] In some embodiments, the movable component includes an arc-shaped movable plate, a stop plate, and one or more connecting posts connecting the two, wherein the inner surface of the arc-shaped movable plate is the polished curved surface, and the outer surface of the stop plate is provided with the anti-slip texture.

[0010] Furthermore, the limiting member is located between the arc-shaped movable plate and the stop plate, and includes an arc-shaped limiting plate fixedly connected to the sliding seat, wherein the radius of curvature of the arc-shaped limiting plate is consistent with that of the arc-shaped movable plate.

[0011] Furthermore, the connecting post is slidably connected to the limiting member in a radial direction.

[0012] In some embodiments, the polishing mechanism further includes a movable component return spring for providing a centripetal elastic return force to the movable component.

[0013] In some embodiments, the polishing mechanism further includes an adjustment roller return spring for providing a centrifugal elastic return force to the tension adjustment roller.

[0014] In some embodiments, the polishing unit further includes a radial feed device, the push rod of which is connected to the sliding seat and can drive the sliding seat to slide radially.

[0015] Furthermore, the polishing unit also includes a fixed frame fixedly mounted on the worktable and located outside the sliding seat, a linear guide rail mounted on the fixed frame, and a radial feed device slidably mounted on the guide rail, the sliding direction of which is parallel to the axis of the reciprocating lead screw.

[0016] In some embodiments, the sliding seat includes a base and protective side panels surrounding the base, the side panels having openings on their sides facing the first axis for the movable component to move.

[0017] In some embodiments, the polishing unit has two reciprocating lead screws symmetrically arranged on both sides of the sliding seat, and the reciprocating lead screws do not interfere with the moving components.

[0018] In some embodiments, the air extraction device is a centrifugal fan, which includes a rotating shaft and an impeller assembly connected to one end of the rotating shaft, and the rotating shaft is connected to a power source; or, the rotating shaft is connected to the drive mechanism via a synchronous belt drive assembly and is driven by the drive mechanism.

[0019] In some embodiments, the drive mechanism includes a motor and a drive gear connected to and coaxial with the output shaft of the motor, the drive gear meshing with the worktable.

[0020] In some embodiments, the polishing apparatus further includes a clamping device that can clamp and fix the rotor when the rotor is positioned above the dust removal channel.

[0021] In some embodiments, the dust removal channel adopts a cylindrical cavity structure, which has an axially arranged central tube and multiple partitions evenly distributed radially around the outer periphery of the central tube. The inner end of each partition is connected to the outer wall of the central tube, and the outer end is connected to the inner wall of the dust removal channel.

[0022] In some embodiments, the inner diameter of the dust removal channel is close to or equal to the outer diameter of the rotor.

[0023] In some embodiments, the sidewall of the dust collection chamber is provided with an exhaust grille.

[0024] In some embodiments, the end of the polishing chamber away from the dust collection chamber is an open end, and an end cover is provided on the open end. The end cover has a through hole in the middle for the rotor to pass through, and the gear ring is fixedly connected to the inside of the end cover and is coaxial with the worktable.

[0025] In some embodiments, the polishing unit has a plurality of units distributed circumferentially on the worktable.

[0026] In some embodiments, the housing has a cylindrical structure.

[0027] In some embodiments, the bottom of the housing is fitted with a plurality of support columns.

[0028] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The polishing mechanism of this invention is capable of adaptive adjustment. When the rotor contacts the polishing mechanism, the radial pressure applied by the rotor causes the abrasive belt to deform outward. At this time, the tension change of the abrasive belt drives the tension adjusting roller to move inward for displacement compensation, allowing the abrasive belt to adaptively deform and form a full-contact fit with the rotor's polishing surface. This design solves the problem of uneven contact between the abrasive belt and the rotor's polishing surface caused by excessive tension, allowing the abrasive belt to polish the rotor more evenly and thoroughly. Simultaneously, the movable component slides outward, its outer surface tightly abutting against the abrasive belt, increasing the belt's tension and preventing slippage during polishing, thus ensuring the stability of the polishing process.

[0029] When the drive mechanism rotates the worktable, the worktable drives the polishing unit to rotate synchronously around the first axis, performing circumferential polishing on the inner rotor. During this process, the reciprocating screw also rotates under the action of the gear ring, further driving the sliding seat and polishing mechanism to reciprocate axially. This motion ensures that the protrusions on the rotor do not rub against the same horizontal position of the abrasive belt for a long time, effectively avoiding the polishing marks caused by fixed-point friction in traditional polishing processes, and further improving the polishing uniformity of the rotor surface. In addition, this design can also accelerate the discharge of powder generated by the abrasive belt and rotor during the polishing process through the dust removal channel. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a polishing device provided in Example 1; Figure 2 A cross-sectional view of a polishing apparatus provided in Embodiment 1; Figure 3 for Figure 2 An enlarged schematic diagram of part A in the diagram; Figure 4 A cross-sectional view of a polishing apparatus provided in Embodiment 1 from another angle; Figure 5 A schematic diagram of the polishing apparatus provided in Example 1 is shown, showing only a portion of the polishing unit. Figure 6 This is a schematic diagram of the structure of a polishing unit provided in Example 1; Figure 7 A cross-sectional view of a polishing unit provided in Embodiment 1; Figure 8 for Figure 7 Enlarged schematic diagram of part B; Figure 9 This is a schematic diagram of the structure of a polishing unit from another angle, as provided in Embodiment 1. Figure 10 A cross-sectional view of a polishing unit provided in Embodiment 1; Figure 11 for Figure 10 An enlarged schematic diagram of section C; The components include: 1. Shell; 11. Polishing chamber; 12. Dust collection chamber; 121. Exhaust grille; 13. Dust removal channel; 131. Central tube; 132. Partition plate; 14. End cap; 141. Through hole; 15. Support column. 2. Workbench; 3. Polishing unit; 31. Reciprocating lead screw; 32. Seat; 321. Base; 322. Enclosing side plate; 33. Polishing mechanism; 331. Arc-shaped movable plate; 332. Anti-slip plate; 333. Connecting column; 334. Movable component return spring; 335. Arc-shaped limit plate; 336. Tension adjusting roller; 337. Abrasive cloth belt; 338. Adjusting roller return spring; 339. Adjusting roller connector; 3391. Adjusting roller mounting base; 3392. Connecting part; 3393. Guide part; 34. Threaded pair; 35. Transmission gear; 36. Fixing frame; 37. Linear guide rail; 38. Radial feed device; 381. Push rod; 4. Gear ring; 5. Air extraction device; 51. Rotating shaft; 52. Impeller assembly; 6. Drive mechanism; 61. Motor; 611. Output shaft; 62. Gear; 63. Synchronous belt drive assembly; 7. Clamping device; 71. Clamping arm; 72. Clamping drive component; 8. Rotor. Detailed Implementation

[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0033] In the description of the embodiments of the present invention, it should be understood that axial direction refers to the direction of the rotation center axis of the device or component, and radial direction is the direction perpendicular to the rotation center axis; inner and outer are positions defined by distance relative to the center of the device or component, where inner is the position closer to the center of the device or component, and outer is the position farther away from the center of the device or component; up and down refer to the orientation of the device or component in its actual use or working state. The above description of directional terms is only for the convenience of describing the embodiments of the present invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0036] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0037] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0038] Example 1: This invention provides a motor rotor polishing device, such as... Figures 1 to 11As shown, it includes a housing 1, a worktable 2, a polishing unit 3, a gear ring 4, and a drive mechanism 6. The housing 1 contains a polishing chamber 11, a dust collection chamber 12, and a dust removal channel 13 connecting the two. An air extraction device 5 is installed in the dust removal channel 13, configured to generate negative pressure to guide polishing powder generated in the polishing chamber 11 into the dust collection chamber 12 through the dust removal channel 13. The worktable 2 is located within the polishing chamber 11 and rotatably mounted on the outer wall of the dust removal channel 13. The axis of rotation of the worktable 2 is defined as a first axis. The polishing unit 3 has one or multiple units evenly distributed circumferentially on the worktable 2, preferably 2 to 6 units. Taking one unit as an example, it includes a reciprocating screw 31 arranged parallel to the first axis, a sliding seat 32 connected to the reciprocating screw 31 via a threaded pair 34, and a polishing mechanism 33 mounted on the sliding seat 32. The polishing mechanism 33 includes a movable component slidably mounted radially on a sliding seat 32, a limiting member for constraining the sliding range of the movable component, at least two tension adjusting rollers 336 disposed on both sides of the movable component and slidable radially, and an abrasive cloth belt 337 tensioned around the movable component and the tension adjusting rollers 336. The inner surface of the movable component is a polishing surface matching the curvature of the rotor 8, and the outer surface has anti-slip texture. A gear ring 4 is fixedly mounted on the housing 1, and the end of the reciprocating lead screw 31 of the polishing unit 3 is provided with a transmission gear 35 that meshes with the gear ring 4. A drive mechanism 6 is used to drive the worktable 2 to rotate.

[0039] When the motor rotor is fixed inside the polishing unit 3 and above the dust removal channel 13, as Figure 5 As shown, the rotor 8 (rotor core) contacts the polishing mechanism 33 and presses the abrasive belt 337 outward. At this time, the tension of the abrasive belt 337 changes, driving the tension adjusting roller 336 to move inward. This process allows the abrasive belt 337 on the outer side of the inner side of the moving component to adaptively deform, switching from an initial taut state to an outward convex arc shape, and forming a full contact fit with the surface of the rotor 8 to be polished, thereby facilitating more uniform polishing of the rotor 8.

[0040] Simultaneously, the rotor 8 drives the movable component to slide radially outward, causing the outer surface of the movable component to tightly abut against the abrasive belt 337 on its outer side. This not only increases the tension of the abrasive belt 337, thereby improving polishing efficiency, but also increases the friction between the movable component and the abrasive belt 337, achieving compression and fixation of the abrasive belt 337, effectively preventing the abrasive belt 337 from slipping during polishing, thus ensuring the stability of the polishing process.

[0041] When the drive mechanism 6 drives the worktable 2 to rotate, the worktable 2 carries the polishing unit 3 to rotate around the first axis, thereby performing circumferential polishing on the inner rotor 8. During this process, the reciprocating screw 31 also rotates under the action of the gear ring 4, further driving the sliding seat 32 and the polishing mechanism 33 to reciprocate along the axial direction. This design has at least the following advantages: First, it ensures that the protrusions on rotor 8 will not rub against the same horizontal position of the abrasive cloth belt 337 for a long time, effectively avoiding the polishing marks caused by fixed-point friction in traditional polishing processes, and further improving the uniformity of polishing on the surface of rotor 8.

[0042] Secondly, it helps to accelerate the discharge of powder generated by the sanding belt 337 and rotor 8 during the polishing process through the dust removal channel 13, thereby maintaining a clean working environment and reducing dust inside the gaps of rotor 8.

[0043] Furthermore, such as Figures 7 to 10 As shown, the movable component includes an arc-shaped movable plate 331, a stop plate 332, and one or more connecting posts 333 connecting the two. Preferably, 2 to 4 connecting posts 333 are arranged at equal intervals along the axial direction. The inner surface of the arc-shaped movable plate 331 is a polished curved surface; the outer surface of the stop plate 332 is provided with an anti-slip texture. The anti-slip texture can refer to existing technologies. For example, it can be a striped texture, such as straight stripes or wavy stripes; it can also be a dotted texture, such as circular dotted texture or polygonal dotted texture; or it can be a grid-like texture. In this embodiment, the anti-slip texture is a vertical striped texture, which can effectively prevent the abrasive cloth belt 337 from slipping during the polishing process. The working principle of the movable component is as follows: In the initial state, the anti-slip plate 332 and the abrasive belt 337 do not contact each other or only make slight contact without generating significant friction, and the anti-slip plate 332 does not restrict the movement of the abrasive belt 337. In this state, the position of the abrasive belt 337 can be adjusted according to actual usage needs to achieve alternating use of different sections; or a new abrasive belt 337 can be replaced.

[0044] When the arc-shaped movable plate 331 is squeezed outward by the rotor 8, the arc-shaped movable plate 331 drives the anti-slip plate 332 to slide synchronously, so that the anti-slip plate 332 presses against the inner side of the abrasive belt 337, thereby increasing the tension of the abrasive belt 337, preventing the abrasive belt 337 from sliding during the polishing process, and ensuring the stability of the polishing process.

[0045] The limiting component is located between the arc-shaped movable plate 331 and the anti-slip plate 332. It includes an arc-shaped limiting plate 335 fixedly connected to the sliding seat 32. The arc-shaped limiting plate 335 is located outside the arc-shaped movable plate 331, and its radius of curvature is the same as that of the arc-shaped movable plate 331. The connecting column 333 passes through the arc-shaped limiting plate 335 and slides radially. When the arc-shaped movable plate 331 slides outward under the pressure of the rotor 8, the arc-shaped limiting plate 335 restricts its sliding distance, ensuring that the arc-shaped limiting plate 335 and the arc-shaped movable plate 331 always maintain a close fit during the polishing process, providing uniform and stable extrusion force to the abrasive belt 337, thereby effectively improving the polishing quality and efficiency. Preferably, the limiting component also includes adjusting rollers disposed on both sides of the arc-shaped limiting plate 335, and the adjusting rollers are rotatable around their own axis. When the tension of the abrasive belt 337 changes, the adjusting roller can rotate accordingly, which helps the abrasive belt 337 to undergo appropriate deformation when under force, effectively relieving the stress caused by the tension change of the abrasive belt 337.

[0046] In order to reset the movable component and the tension adjusting roller 336, the polishing mechanism 33 is provided with a movable component reset spring 334 and an adjusting roller reset spring 338.

[0047] Specifically, the movable component return spring 334 provides a centripetal elastic return force to the movable component. In this embodiment, multiple movable component return springs 334 are arranged corresponding to the connecting posts 333, each sleeved on its corresponding connecting post 333. One end of the movable component return spring 334 is connected to the stop plate 332, and the other end is connected to the limiting member, giving the stop plate 332 a tendency to slide radially inward. When the stop plate 332 slides inward under the elastic force of the movable component return spring 334, it drives the arc-shaped movable plate 331 to slide synchronously, ensuring that the movable component can return to its original position. Figure 7 As shown in the figure, the arc-shaped movable plate 331 and the arc-shaped limiting plate 335 are in contact, and the movable component reset spring 334 is in a stretched state, which has the tendency to pull the stop plate 332 to slide inward.

[0048] The adjusting roller return spring 338 provides a centrifugal elastic return force for the tension adjusting roller 336. To avoid interference with the abrasive cloth belt 337 on the tension adjusting roller 336, an adjusting roller connector 339 is provided for mounting the tension adjusting roller 336. The adjusting roller connector 339 includes an adjusting roller mounting base 3391 fixedly mounted on the sliding seat 32 and used to connect the tension adjusting roller 336; a connecting portion 3392 fixedly connected to the adjusting roller mounting base 3391 and located outside the tension adjusting roller 336 and parallel to the tension adjusting roller 336; and a guide portion 3393 connected at one end to the connecting portion 3392 and extending radially. The other end of the guide portion 3393 is connected to the movable seat 32, and there are multiple guide portions, preferably 2 to 4 arranged at equal intervals. The adjusting roller return spring 338 is sleeved on the guide portion 3393, causing the adjusting roller mounting base 3391 to tend to slide outwards. When the adjusting roller mounting base 3391 slides outward, it drives the tension adjusting roller 336 to move synchronously, thereby realizing the reset function of the tension adjusting roller 336. Furthermore, the tension adjusting roller 336 is rotatably mounted on the adjusting roller mounting base 3391 around its own axis. When the tension of the abrasive belt 337 changes, the tension adjusting roller 336 can also rotate accordingly, thereby helping to further alleviate the stress generated by the tension change of the abrasive belt 337.

[0049] The sliding seat 32 includes a base 321 and a protective side plate 322 surrounding the base 321. A connecting part 3392 is connected to the inner wall of the protective side plate 322. The protective side plate 322 has an opening on its side facing the first axis, allowing the movable component to move. The movable component, limiting plate, tension adjusting roller 336, and reciprocating screw 31 are all located within the space enclosed by the protective side plate 322. Each polishing unit 3 has two reciprocating screws 31 symmetrically arranged on both sides of the sliding seat 32. The reciprocating screws 31 do not interfere with the movable component. In other embodiments, the reciprocating screw 31 of each polishing unit 3 can also be set to one, three, or more depending on actual needs. The structure of the reciprocating screw 31 can refer to the prior art. In this embodiment, the thread of the reciprocating screw 31 is provided at its lower end and connected to the base 321 via a threaded pair 34.

[0050] The polishing unit 3 also includes a radial feed device 38 for radial movement of the polishing unit 3. In this embodiment, the radial feed device 38 is an electric telescopic rod, with its push rod 381 connected to the sliding seat 32. The extension and retraction of the electric telescopic rod drives the polishing mechanism 33 to slide radially, allowing it to move closer to the rotor 8 for polishing operations or further away from the rotor 8 for loading and unloading operations. Further, the polishing unit 3 also includes a fixed frame 36 fixed to the worktable 2 and located outside the sliding seat 32, and a linear guide rail 37 mounted on the fixed frame 36. The radial feed device 38 is slidably mounted on the linear guide rail 37, with its sliding direction parallel to the axis of the reciprocating lead screw 31. Preferably, a spring is fitted on the lower end of the linear guide rail 37 to provide additional cushioning and support. After the rotor 8 is installed, the radial feed device 38 is driven, its push rod 381 extending outwards to push the polishing unit 3 to slide radially inwards until the polishing unit 3 approaches and engages with the rotor 8, preparing for the polishing operation. When the reciprocating lead screw 31 rotates under the action of the gear ring 4 and drives the polishing mechanism 33 to reciprocate along the axial direction, the linear guide rail 37 allows the polishing mechanism 33 to drive the radial feed device 38 to move synchronously, ensuring that the polishing unit 3 always maintains close contact with the rotor 8 throughout the polishing process, thereby achieving a high-efficiency and uniform polishing effect.

[0051] The exhaust device 5 is a centrifugal fan, which includes a shaft 51 and an impeller assembly 52 connected to one end of the shaft 51. In some embodiments, a power source is connected to the shaft 51 of the centrifugal fan and the centrifugal fan is driven by the power source. In other embodiments, the shaft 51 of the centrifugal fan is connected to the drive mechanism 6 via a synchronous belt drive assembly 63 and is driven by the drive mechanism 6. As an example, the axis of the shaft 51 is a first axis, with one end extending out of the dust removal channel 13 and into the dust collection chamber 12. The shaft 51 is connected to the drive mechanism 6 via the synchronous belt drive assembly 63. The synchronous belt drive assembly 63 refers to the prior art, such as a combination mechanism of belt and pulley.

[0052] In this embodiment, the drive mechanism 6 includes a motor 61 and a drive gear 62 fixedly connected to and coaxial with the output shaft 611 of the motor 61. The drive gear 62 meshes with the worktable 2. The axis of the output shaft 611 is defined as a second axis, which is parallel to the first axis. When the motor 61 starts, its output shaft 611 performs a dual function: firstly, the output shaft 611 drives the worktable 2 to rotate around the first axis via the drive gear 62, completing the polishing operation; secondly, the output shaft 611, through a synchronous belt drive assembly 63, drives a centrifugal fan to rotate, real-time removing dust generated during the polishing process, achieving immediate dust removal of the processing environment.

[0053] The dust removal channel 13 adopts a cylindrical cavity structure, inside which is a central tube 131 arranged axially, and multiple baffles 132 evenly distributed radially around the outer periphery of the central tube 131. The inner end of each baffle 132 is connected to the outer wall of the central tube 131, and the outer end is connected to the inner wall of the dust removal channel 13. The upper end of the central tube 131 is flush with the upper end of the dust removal channel 13, providing support for the iron core end of the rotor 8; the lower end is located above the dust removal channel 13, facilitating the arrangement of the air extraction device 5. Preferably, the inner diameter of the dust removal channel 13 is close to or equal to the outer diameter of the iron core end of the rotor 8, which can reduce airflow turbulence and improve dust extraction efficiency.

[0054] The end of the polishing chamber 11 furthest from the dust collection chamber 12 is an open end, with a detachable end cover 14. The end cover 14 has a through hole 141 in its center for the rotor 8 to pass through. A gear ring 4 is fixedly connected to the inner side of the end cover 14 and coaxial with the worktable 2. A clamping device 7 of the polishing apparatus is located on the end cover 14. The clamping device 7 has multiple clamping arms evenly arranged around a first axis, used to clamp and fix the rotor 8. As an example, the clamping device 7 includes a clamping drive 72 and a clamping arm 71 connected to the clamping drive 72. The clamping drive 72 is an electric push rod used to push the clamping arm 71 radially closer to or away from the rotor 8. The clamping arm 71 arches outward in an arc shape, and its inner arm opposite to the rotor 8 is adapted to the rotor shaft 51 of the rotor 8. To further fix the rotor 8, the inner wall is also provided with an anti-slip texture. The specific structure of the anti-slip texture can be referred to above and will not be repeated here.

[0055] The shell 1 has a cylindrical structure, and multiple support columns 15 are installed at the bottom of the shell 1. An exhaust grille 121 is provided on the side wall of the dust collection chamber 12 corresponding to the shell 1.

[0056] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A motor rotor polishing device, characterized in that, include: The shell (1) has a polishing chamber (11), a dust collection chamber (12) and a dust removal channel (13) connecting the two and equipped with an air extraction device (5). The workbench (2) is located inside the polishing chamber (11) and is rotatably mounted on the outer wall of the dust removal channel (13) around the first axis. The polishing unit (3) is located on the worktable (2) and includes a reciprocating screw (31) arranged parallel to the first axis, a sliding seat (32) connected to the reciprocating screw (31) via a threaded pair (34) and a polishing mechanism (33) located on the sliding seat (32). The polishing mechanism (33) includes a movable component that is slidably disposed on the sliding seat (32) in the radial direction, a limiting member for constraining the movement range of the movable component, at least two tension adjusting rollers (336) disposed on both sides of the movable component and slidable in the radial direction, and a sanding cloth belt (337) that surrounds the movable component and the tension adjusting rollers (336) and is tensioned. The inner side of the movable component is a polishing surface that matches the curvature of the rotor (8), and the outer side is provided with anti-slip texture. When the polishing mechanism (33) contacts the rotor (8), the tension of the abrasive belt (337) drives the tension adjusting roller (336) to move inward, so that the abrasive belt (337) fits tightly against the surface of the rotor (8), and at the same time pushes the movable component to slide outward in the radial direction, so that the outer side of the movable component abuts against the abrasive belt (337). A gear ring (4) is disposed on the housing (1), and the end of the reciprocating screw (31) is provided with a transmission gear (35) that can mesh with the gear ring (4); and, The drive mechanism (6) is used to drive the worktable (2) to rotate. When the worktable (2) rotates, the reciprocating screw (31) rotates under the action of the gear ring (4), which drives the sliding seat (32) and the polishing mechanism (33) to reciprocate along the axial direction.

2. The motor rotor polishing device according to claim 1, characterized in that, The movable component includes an arc-shaped movable plate (331), a stop plate (332), and one or more connecting posts (333) connecting the two. The inner side of the arc-shaped movable plate (331) is the polished curved surface, and the outer side of the stop plate (332) is provided with the anti-slip texture.

3. The motor rotor polishing device according to claim 2, characterized in that, The limiting member is located between the arc-shaped movable plate (331) and the stop plate (332), and includes an arc-shaped limiting plate (335) fixedly connected to the sliding seat (32), wherein the radius of curvature of the arc-shaped limiting plate (335) is the same as that of the arc-shaped movable plate (331). And / or, the connecting post (333) is slidably connected to the limiting member in a radial direction.

4. The motor rotor polishing device according to claim 1, characterized in that, The polishing mechanism (33) also includes a movable component return spring (334) for providing a centripetal elastic return force to the movable component; And / or, the polishing mechanism (33) further includes an adjustment roller return spring (338) for providing a centrifugal elastic return force to the tension adjustment roller (336).

5. The motor rotor polishing apparatus according to claim 1, characterized in that, The polishing unit (3) also includes a radial feed device (38), the push rod (381) of which is connected to the sliding seat (32) and can drive the sliding seat (32) to slide radially.

6. The motor rotor polishing apparatus according to claim 5, characterized in that, The polishing unit (3) also includes a fixed frame (36) fixed on the worktable (2) and located outside the sliding seat (32), and a linear guide rail (37) set on the fixed frame (36). The radial feed device (38) is slidably set on the guide rail, and its sliding direction is parallel to the axis of the reciprocating screw (31).

7. The motor rotor polishing apparatus according to claim 1, characterized in that, The sliding seat (32) includes a base (321) and a protective side plate (322) surrounding the base (321). The protective side plate (322) has an opening on the side facing the first axis line for the movement of the movable component.

8. The motor rotor polishing apparatus according to claim 1, characterized in that, The polishing unit (3) has two reciprocating lead screws (31) symmetrically arranged on both sides of the sliding seat (32), and the reciprocating lead screws (31) do not interfere with the moving components.

9. The motor rotor polishing apparatus according to claim 1, characterized in that, The air extraction device (5) is a centrifugal fan, which includes a rotating shaft (51) and an impeller assembly (52) connected to one end of the rotating shaft (51). The rotating shaft (51) is connected to a power source; or, the rotating shaft (51) is connected to the drive mechanism (6) through a synchronous belt drive assembly (63) and is driven by the drive mechanism (6). And / or, the drive mechanism (6) includes a motor (61) and a drive gear (62) connected to and coaxial with the output shaft (611) of the motor (61), the drive gear (62) meshing with the worktable (2).

10. The motor rotor polishing apparatus according to claim 1, characterized in that, The polishing device also includes a clamping device (7), which can clamp and fix the rotor (8) when the rotor (8) is positioned above the dust removal channel (13).

11. The motor rotor polishing apparatus according to claim 1, characterized in that, The dust removal channel (13) adopts a cylindrical cavity structure, and inside it is a central tube (131) arranged along the axial direction and multiple partitions (132) evenly distributed radially on the outer periphery of the central tube (131). The inner end of each partition (132) is connected to the outer wall of the central tube (131), and the outer end is connected to the inner wall of the dust removal channel (13). And / or, the inner diameter of the dust removal channel (13) is close to or equal to the outer diameter of the rotor (8).

12. The motor rotor polishing apparatus according to claim 1, characterized in that, The dust collection chamber (12) has an exhaust grille (121) on its side wall.

13. The motor rotor polishing apparatus according to claim 1, characterized in that, The end of the polishing chamber (11) away from the dust collection chamber (12) is an open end, and an end cover (14) is provided on the open end. The end cover (14) has a through hole (141) in the middle for the rotor (8) to pass through. The gear ring (4) is fixedly connected to the inside of the end cover (14) and is coaxial with the worktable (2).

14. The motor rotor polishing apparatus according to claim 1, characterized in that, The polishing unit (3) has multiple units that are evenly distributed circumferentially on the worktable (2).

15. The motor rotor polishing apparatus according to claim 1, characterized in that, The shell (1) has a cylindrical structure; And / or, a plurality of support columns (15) are installed at the bottom of the housing (1).

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