Fine motor outer cover polishing device
By designing a polishing device including a straight cylinder, a cover plate, an electrode rod, a lifting member and a flexible rod, the problem of poor contact effect between the abrasive material and the motor cover surface in the prior art is solved, efficient polishing and low residue are achieved, and polishing quality is improved.
Patent Information
- Application Number
- CN202411660860.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-02-25
AI Technical Summary
In the existing motor cover polishing device, the suspension structure causes the abrasive material to have poor contact with the surface of the motor cover, affecting the polishing effect, and the hook structure easily blocks the abrasive material, resulting in a high probability of unpolished areas.
A polishing device including a straight cylinder, a cover plate, an electrode rod, a lifting member and a flexible rod is designed. By rotating the rotating shaft and a straight plate, the motor cover can be vertically contacted with the abrasive material in the polishing liquid, achieving effective polishing, and assisting in the discharge of liquid through a conical cylinder and a drainage pipe to reduce the residual polishing liquid.
It effectively ensures the polishing effect of the motor cover, reduces the probability of unpolished areas, improves the polishing quality, and reduces the residue of polishing liquid, ensuring the smooth progress of subsequent electrolytic polishing operations.
Smart Images
Figure CN119501792A_ABST
Abstract
Description
Technical Field
[0001] The invention discloses a precision motor outer cover polishing device, belonging to the technical field of motor production. Background Art
[0002] A motor is an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. Its main function is to generate driving torque as a power source for electrical appliances or various machines. The motor cover is one of the main parts of the motor, and the motor cover has a shaft hole for assembling the shaft that generates torque. In the production of the motor cover, the motor cover is generally polished; At present, in order to ensure the polishing effect, polishing liquid is generally used to perform fine polishing operations on the motor cover. When in use, the motor cover is generally suspended by a hook structure, and the suspended motor cover is then buried in the polishing liquid, and then the surface of the motor cover is polished with the polishing liquid. However, the suspended motor cover is horizontal to the flow direction of the abrasive in the polishing liquid, resulting in poor contact between the abrasive and the surface of the motor cover, thereby affecting the polishing effect, and the hook structure is prone to block the flowing abrasive, resulting in a high probability of unpolished areas on the motor cover, affecting the polishing quality of the motor cover. Summary of the invention
[0003] In view of the problems in the prior art, the present invention provides a polishing device for a refined motor outer cover.
[0004] The technical solution adopted by the present invention to solve its technical problems is: a polishing device for the outer cover of a fine-worked motor, comprising a straight cylinder, the upper end of the straight cylinder is fitted with a cover plate, the lower end of the straight cylinder is installed with a blocking piece, the outer end of the straight cylinder is provided with a fixed part of a lifting piece, and the movable part of the lifting piece is connected to the outer end of the cover plate, two vertically arranged electrode rods are symmetrically arranged at the lower end of the cover plate, and the electrode rods extend to the upper end of the cover plate, the electrode rods are located on the upper side of the blocking piece, the lower end of the cover plate is rotatably connected to a vertically arranged connecting shaft, a flexible rod is provided at the lower end of the connecting shaft, and the flexible rod is located between the two electrode rods, the upper end of the cover plate is installed with a fixed part of a driving device, and the driving device is located between the two electrode rods, and the movable part of the driving device is connected to the connecting shaft; The lower end of the cover plate is movably connected to an auxiliary part, and the auxiliary part is located between the two electrode rods, the auxiliary part is arranged on the outer end of the connecting shaft, a vertically arranged fixed plate is installed on the left side of the lower end of the auxiliary part, and the fixed plate is located on the left side of the flexible rod, a vertically arranged limiter is arranged on the left side of the lower end of the auxiliary part, and the limiter is located on the left side of the fixed plate, a transversely arranged rotating shaft is rotatably connected between the limiter and the fixed plate, and the rotating shaft passes through the fixed plate, the other end of the flexible rod is connected to the right end of the rotating shaft, a plurality of transversely arranged straight plates are equidistantly arranged at the outer end of the rotating shaft, and the straight plates are located between the limiter and the fixed plate.
[0005] Further, the position-limiting member comprises a vertically arranged mounting plate, the mounting plate is arranged on the lower end of the auxiliary member, the lower end surface of the mounting plate is recessed upward to form a groove, and the groove extends to the left end, and a vertically arranged limiting plate is arranged at the lower end of the mounting plate, and the limiting plate extends into the groove; A positioning assembly is installed at the top of the groove, and the lower end of the positioning assembly is connected to the upper end of the limiting plate. A U-shaped plate is movably installed at the lower end of the limiting plate, and the limiting plate extends into the U-shaped plate. The U-shaped plate is rotatably connected to the left end of the rotating shaft.
[0006] Further, the positioning assembly includes an elastic member, the elastic member is installed on the top of the inner part of the groove, a movable plate arranged laterally is provided at the lower end of the elastic member, and the movable plate is attached to the upper end of the limiting plate, the movable plate is slidably connected in the groove, and the movable plate extends out of the left side of the groove; The upper end surface of the limiting plate is recessed downward to form a limiting hole, a vertically arranged limiting rod is provided at the lower end of the movable plate, and the limiting rod is located in the limiting hole, a vertically arranged telescopic rod is installed between the upper end of the movable plate and the top end of the groove, and the telescopic rod is located on the inner side of the elastic member.
[0007] Further, the auxiliary member includes a ring gear, the ring gear is rotatably connected to the lower end of the cover plate, a pinion is arranged at the outer end of the connecting shaft, and the pinion is meshed with the inner right wall of the ring gear; A fixing plate is arranged on the left side of the lower end of the ring gear, a transversely arranged connecting plate is arranged on the left end of the ring gear, and the connecting plate is attached to the lower end of the cover plate, and a mounting plate is arranged on the lower end of the connecting plate.
[0008] Furthermore, the lifting member includes two lifting devices, the fixed parts of the two lifting devices are respectively installed on the left and right ends of the straight cylinder, and the fixed parts of the lifting devices extend out of the lower side of the straight cylinder, auxiliary plates are arranged on the left and right ends of the cover plate, and the two auxiliary plates are respectively connected to the movable parts of the two lifting devices.
[0009] Furthermore, the sealing member includes an annular bottom plate, which is installed on the lower end of the straight cylinder. A conical cylinder that is narrow at the top and wide at the bottom is arranged on the inner wall of the annular bottom plate, and the conical cylinder extends into the straight cylinder. The conical cylinder is located on the lower side of the electrode rod. The conical cylinder, the annular bottom plate and the straight cylinder are an integrated structure. A drain pipe with a control valve is arranged at the lower end of the annular bottom plate, and the drain pipe passes through the annular bottom plate and is connected to the straight cylinder.
[0010] Beneficial effects of the present invention: 1. The motor, connecting shaft and flexible rod are used to rotate the rotating shaft and multiple straight plates, so that the supported motor cover can be rotated, so as to realize vertical contact between the surface of the motor cover and the abrasive flowing in the polishing liquid, effectively ensure the polishing effect of the motor cover, and effectively reduce the probability of unpolished areas on the motor cover due to obstruction of components, so as to effectively ensure the polishing quality of the motor cover.
[0011] 2. Through the conical cylinder, the polishing liquid in the straight cylinder is effectively collected on the upper end of the annular bottom plate, so as to assist the drainage operation using the drainage pipe, effectively reduce the residual amount of polishing liquid in the straight cylinder, and effectively ensure the subsequent electrolytic polishing operation.
[0012] 3. Turn the limiting plate to a horizontal state, and then fit the electric outer cover onto the outer end of the rotating shaft, so that the upper straight plate contacts the inner wall of the shaft hole on the electric outer cover, thereby hanging and installing the electric outer cover. Then turn the limiting plate back to its original position, and under the elastic force of the elastic member, move the movable plate and the limit rod downward, so that the limit rod is inserted into the limit hole, and then the limiting plate and the mounting plate are limitedly installed, so that the limiting plate and the mounting plate can be easily disassembled and assembled, and the electric outer cover is convenient to take and put.
[0013] 4. Through the connecting shaft, pinion, ring gear, connecting plate, fixing plate and the structure formed by the limiting plate and the mounting plate, the rotating shaft is rotated around the center line of the ring gear, so that the lifted motor cover is turned over and rotated, and the motor cover is fully polished, and the turning and rotation are linked, which effectively avoids the increase of equipment cost.
[0014] 5. Use electromagnets to adsorb impurities generated by polishing, so that the impurities are collected on the upper end of the filter cloth in time, effectively reducing the probability of impurities adsorbing on the surface of the motor cover, and effectively ensuring the polishing quality of the motor cover. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a structural schematic diagram of a fine-finish motor outer cover polishing device of the present invention; Figure 2 It is a cross-sectional view of a polishing device for a fine-finished motor outer cover according to the present invention; Figure 3 for Figure 2 Enlarged view of part A in the middle; Figure 4 It is an assembly diagram of a cover plate, an electrode rod, a limiting plate, a mounting plate, a fixing plate, a flexible rod and a rotating shaft in a fine-working motor outer cover polishing device of the present invention; Figure 5It is an assembly diagram of a fixed plate, a flexible rod and a rotating shaft in a polishing device for a fine-finished motor outer cover of the present invention; Figure 6 A three-dimensional diagram of a straight cylinder in a polishing device for a fine motor outer cover of the present invention; Figure 7 It is an assembly diagram of a limiting plate and a rotating shaft in a polishing device for a fine motor outer cover of the present invention; Figure 8 A three-dimensional diagram of a mounting plate in a polishing device for a fine motor cover according to the present invention; Fig. 9 A three-dimensional diagram of an annular plate in a polishing device for a fine motor outer cover according to the present invention; Fig.10 The present invention is a cross-sectional view of an annular plate in a polishing device for a fine-finished motor outer cover.
[0016] In the figure: 1, straight cylinder, 2, cover plate, 3, electrode rod, 4, motor, 5, limiting plate, 6, mounting plate, 7, fixing plate, 8, flexible rod, 9, rotating shaft, 11, electric push rod, 12, annular plate, 13, lifting rod, 14, conical cylinder, 15, electromagnet, 16, filter cloth, 17, annular bottom plate, 21, auxiliary plate, 22, connecting shaft, 23, connecting plate, 24, ring gear, 25, pinion, 51, limiting hole, 52, U-shaped plate, 61, groove, 62, elastic member, 63, movable plate, 64, limiting rod, 65, telescopic rod, 91, straight plate, 101, drain pipe. DETAILED DESCRIPTION
[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
[0018] Embodiment 1: Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, a polishing device for the outer cover of a fine-made motor is provided, comprising a straight cylinder 1, an annular bottom plate 17 is installed on the lower end of the straight cylinder 1, and a mounting carrier is provided for a conical cylinder 14 through the annular bottom plate 17, and the conical cylinder 14 extending into the straight cylinder 1 and located at the lower side of the electrode rod 3 and arranged in a narrow upper and wide lower shape is arranged on the inner wall of the annular bottom plate 17, and the conical cylinder 14 is used to assist in the drainage operation, and the conical cylinder 14, the annular bottom plate 17 and the straight cylinder 1 are an integrated structure, and the design of the integrated structure is convenient for production, and then a drainage pipe 101 that penetrates the annular bottom plate 17 and is connected to the straight cylinder 1 and has a control valve is arranged on the lower end of the annular bottom plate 17, and the drainage pipe 101 is used for drainage operation; The cover plate 2 is fitted onto the upper end of the straight cylinder 1. The cover plate 2 is used to seal the opening of the straight cylinder 1 on the one hand, and to provide a mounting carrier for components such as the electrode rod 3 on the other hand. Two electrode rods 3 that are vertically arranged and extend to the upper end of the cover plate 2 and are located on the upper side of the conical cylinder 14 are symmetrically arranged on the lower end of the cover plate 2. The two electrode rods 3 are used together for fine polishing operations. Two auxiliary plates 21 connected to the movable part of the lifting device are respectively arranged on the left and right ends of the cover plate 2. The lifting device is connected to the cover plate 2 through the auxiliary plates 21. The fixed parts of the lifting device whose two fixed parts extend out of the lower side of the straight cylinder 1 are respectively installed on the left and right ends of the straight cylinder 1. The auxiliary plates 21 are driven up and down by the lifting device. The lifting device can use an electric push rod 11.
[0019] When in use, first start the two electric push rods 11, and then drive the two auxiliary plates 21 to move upward, so that the cover plate 2 moves upward, and then the opening of the straight tube 1 is exposed, and then the motor cover is placed in the straight tube 1, and then the two electric push rods 11 are used to make the cover plate 2 fit the upper end of the straight tube 1 again, at this time the motor cover is buried in the polishing liquid in the straight tube 1, and the motor cover is located between the two electrode rods 3, and then the circuits of the two electrode rods 3 are connected, so as to perform fine polishing on the motor cover; The control valve on the drain pipe 101 can be opened, so that the drain pipe 101 can discharge the polishing liquid in the straight cylinder 1. In addition, in the later stage of drainage, the polishing liquid in the straight cylinder 1 will slide downward along the tapered surface of the tapered cylinder 14, so that the remaining polishing liquid in the straight cylinder 1 will be collected on the upper end of the annular bottom plate 17, thereby assisting the drainage operation, effectively reducing the residual amount of polishing liquid in the straight cylinder 1, and effectively ensuring the subsequent electrolytic polishing operation.
[0020] Embodiment 2: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the vertically arranged connecting shaft 22 is rotatably connected to the lower end of the cover plate 2, and a mounting carrier is provided for the flexible rod 8 and other components through the connecting shaft 22, and the flexible rod 8 located between the two electrode rods 3 is arranged on the lower end of the connecting shaft 22, and the rotating shaft 9 can be driven to rotate through the flexible rod 8, and then the fixed part of the driving device located between the two electrode rods 3 and the movable part connected to the connecting shaft 22 is installed on the upper end of the cover plate 2, and the connecting shaft 22 is driven to rotate through the driving device, and the driving device can be a motor 4; The ring gear 24 between the two electrode rods 3 is rotatably connected to the lower end of the cover plate 2, and a mounting carrier is provided for the fixing plate 7 and other components through the ring gear 24, and a pinion 25 meshing with the inner right wall of the ring gear 24 is arranged on the outer end of the connecting shaft 22, and the ring gear 24 is rotated through the pinion 25, and then the fixing plate 7 located on the left side of the flexible rod 8 is arranged on the left side of the lower end of the ring gear 24, and a mounting carrier is provided for the rotating shaft 9 through the fixing plate 7; The connecting plate 23 which is arranged horizontally and fits the lower end of the cover plate 2 and is located between the two electrode rods 3 is arranged on the left end of the ring gear 24, and a mounting carrier is provided for the mounting plate 6 through the connecting plate 23, and the mounting plate 6 located on the left side of the fixing plate 7 is arranged on the lower end of the connecting plate 23, and a mounting carrier is provided for components such as the elastic member 62 through the connecting plate 23, and a groove 61 extending to the left end is formed on the lower end surface of the mounting plate 6, and a mounting space is provided for components such as the elastic member 62 through the groove 61; The limiting plate 5 which is arranged vertically and extends into the groove 61 and the U-shaped plate 52 and is movably mounted on the upper end of the U-shaped plate 52 is arranged on the lower end of the mounting plate 6, and a mounting carrier is provided for the U-shaped plate 52 through the limiting plate 5, and an elastic member 62 is installed on the top of the inner part of the groove 61, and a movable plate 63 is movably connected with the groove 61 through the elastic member 62, and the elastic member 62 can be a spring, and then a movable plate 63 which is slidably connected in the groove 61 and extends out of the left side of the groove 61 and is attached to the upper end of the limiting plate 5 and is arranged horizontally is arranged on the lower end of the elastic member 62, and a mounting carrier is provided for the limit rod 64 through the movable plate 63; A limiting hole 51 is formed on the upper end surface of the limiting plate 5, which is recessed downward. The limiting hole 51 provides installation space for the limiting rod 64. The limiting rod 64 located in the limiting hole 51 and arranged vertically is set on the lower end of the movable plate 63. The limiting rod 64 cooperates with the limiting hole 51 to limit the installation between the limiting plate 5 and the mounting plate 6. The telescopic rod 65 located on the inner side of the elastic member 62 and arranged vertically is installed between the upper end of the movable plate 63 and the top end of the groove 61. The movement of the movable plate 63 is guided by the telescopic rod 65. The rotating shaft 9 which is arranged horizontally and passes through the fixed plate 7 and whose right end is connected to the other end of the flexible rod 8 is rotatably connected between the right end of the U-shaped plate 52 and the fixed plate 7. The rotating shaft 9 provides a mounting carrier for components such as the straight plate 91, and the straight plates 91 which are arranged horizontally and located between the U-shaped plate 52 and the fixed plate 7 are equidistantly arranged on the outer end of the rotating shaft 9. Multiple straight plates 91 are used in combination to rotate the motor outer cover.
[0021] When in use, the electric push rod 11 is first used to move the cover plate 2 upward to the limit position, and then the movable plate 63 is pushed upward to compress the elastic member 62, so that the elastic member 62 generates elastic force, and the upward movement of the movable plate 63 causes the limit rod 64 to move upward, so that the limit rod 64 is separated from the limit hole 51, and then the restriction on the limit plate 5 is released, and then the limit plate 5 is rotated to make the limit plate 5 turn into a horizontal state, and then the limit plate 5 is passed through the shaft hole on the electric outer cover, and then the electric outer cover is mounted on the outer end of the rotating shaft 9, so that the upper straight plate 91 contacts the inner wall of the shaft hole on the electric outer cover, so that the electric outer cover is suspended and installed; Then, the limiting plate 5 is turned back to its original position, and the movable plate 63 is released. Under the elastic force of the elastic member 62, the movable plate 63 moves downward along the groove 61, and then the limiting rod 64 moves downward, so that the limiting rod 64 is inserted into the limiting hole 51, and then the limiting plate 5 and the mounting plate 6 are installed in a limited position, so that the limiting plate 5 and the mounting plate 6 are conveniently disassembled and assembled, and the electric outer cover is convenient to take and put; Then, the cover plate 2 is moved down and reattached to the upper end of the straight tube 1 through two electric push rods 11. At this time, the suspended electric outer cover is buried in the polishing liquid in the straight tube 1, and the motor outer cover is located between the two electrode rods 3. Then, the circuits of the two electrode rods 3 are connected, so that the motor outer cover is finely polished. During the polishing process, the motor 4 is started, and the connecting shaft 22 is driven to rotate, so that the flexible rod 8 rotates, and then the rotating shaft 9 rotates, so that the plurality of straight plates 91 rotate, and the supported motor cover rotates, so that the surface of the motor cover is in vertical contact with the abrasive flowing in the polishing liquid, so as to effectively ensure the polishing effect of the motor cover, and effectively reduce the probability of an unpolished area on the motor cover due to the obstruction of components, so as to effectively ensure the polishing quality of the motor cover; During the rotation of the connecting shaft 22, the pinion 25 is rotated, and then the ring gear 24 is rotated, so that the connecting plate 23 and the fixing plate 7 are rotated, and the structure formed by the limiting plate 5 and the mounting plate 6 is rotated, and then the rotating shaft 9 is rotated around the center line of the ring gear 24, so that the lifted motor cover is turned over and rotated, so that the motor cover is fully polished, and the turning rotation and the rotation are linked, which effectively avoids the increase of equipment cost; Embodiment 3: Impurities will be generated during the polishing process of the motor cover. The motor cover is generally made of iron, and these impurities are also made of iron materials. Impurities are easy to float on the polishing liquid, resulting in a high probability that the impurities adhere to the outer surface of the motor cover. The attached impurities will block the polishing operation and affect the polishing quality.
[0022] In order to solve the above problems, Figure 2 , Figure 6 , Fig. 9 and Fig.10As shown, the annular plate 12 located at the lower side of the electrode rod 3 is slidably connected in the straight cylinder 1, and the annular plate 12 is used to provide a mounting carrier for the filter cloth 16, and the filter cloth 16 located at the upper side of the conical cylinder 14 is installed on the inner wall of the annular plate 12, and the filter cloth 16 is used to collect impurities, and then a plurality of lifting rods 13 attached to the upper end of the annular bottom plate 17 and arranged vertically are equidistantly arranged on the lower end of the annular plate 12, and the plurality of lifting rods 13 are used in combination to lift the annular plate 12; A positioning hole is formed on the lower end surface of the lifting rod 13, which is recessed upward. The positioning hole provides installation space for the positioning rod. A plurality of positioning rods located in the positioning holes are equidistantly installed on the upper end of the annular bottom plate 17. The positioning rods cooperate with the positioning holes to position and install the annular plate 12, and the electromagnet 15 extending to the upper end of the conical cylinder 14 is installed on the top end of the conical cylinder 14. The electromagnet 15 is used to assist in impurity collection.
[0023] During the polishing process of the motor outer cover, the circuit of the electromagnet 15 is turned on, so that the electromagnet 15 generates an adsorption force, and then adsorbs impurities generated by polishing, so that the impurities are collected on the upper end of the filter cloth 16 in time, effectively reducing the probability of impurities being adsorbed on the surface of the motor outer cover, and effectively ensuring the polishing quality of the motor outer cover; In addition, the polishing liquid in the straight cylinder 1 is first discharged through the drain pipe 101, and then the two electric push rods 11 are used to move the cover plate 2 upward to the extreme position to expose the opening of the straight cylinder 1, and then the annular plate 12 is moved upward to remove the filter cloth 16 from the straight cylinder 1, and then the impurities collected on the filter cloth 16 are cleaned, and then the annular plate 12 is reinserted into the straight cylinder 1, and the positioning rod is inserted into the positioning hole, and the lifting rod 13 is positioned and installed on the annular bottom plate 17, so that the annular plate 12 is positioned and installed, and then the filter cloth 16 is positioned and installed, so that the filter cloth 16 can be conveniently disassembled and installed, and it is easy to clean and install.
[0024] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A polishing device for a fine motor cover, characterized in that: The invention comprises a straight cylinder (1), the upper end of the straight cylinder (1) is fitted with a cover plate (2), the lower end of the straight cylinder (1) is equipped with a blocking piece, the outer end of the straight cylinder (1) is provided with a fixed part of a lifting piece, and the movable part of the lifting piece is connected to the outer end of the cover plate (2), the lower end of the cover plate (2) is symmetrically provided with two vertically arranged electrode rods (3), and the electrode rods (3) extend to the upper end of the cover plate (2), the electrode rods (3) are located on the upper side of the blocking piece, the lower end of the cover plate (2) is rotatably connected to a vertically arranged connecting shaft (22), a flexible rod (8) is provided at the lower end of the connecting shaft (22), and the flexible rod (8) is located between the two electrode rods (3), the upper end of the cover plate (2) is equipped with a fixed part of a driving device, and the driving device is located between the two electrode rods (3), and the movable part of the driving device is connected to the connecting shaft (22); The lower end of the cover plate (2) is movably connected to an auxiliary component, and the auxiliary component is located between the two electrode rods (3). The auxiliary component is arranged on the outer end of the connecting shaft (22). A vertically arranged fixing plate (7) is installed on the left side of the lower end of the auxiliary component, and the fixing plate (7) is located on the left side of the flexible rod (8). A vertically arranged limiting component is arranged on the left side of the lower end of the auxiliary component, and the limiting component is located on the left side of the fixing plate (7). A horizontally arranged rotating shaft (9) is rotatably connected between the limiting component and the fixing plate (7), and the rotating shaft (9) passes through the fixing plate (7). The other end of the flexible rod (8) is connected to the right end of the rotating shaft (9). A plurality of horizontally arranged straight plates (91) are equidistantly arranged on the outer end of the rotating shaft (9), and the straight plates (91) are located between the limiting component and the fixing plate (7).
2. The polishing device for the outer cover of a fine-finished motor according to claim 1 is characterized in that: The limiting member comprises a vertically arranged mounting plate (6), the mounting plate (6) being arranged on the lower end of the auxiliary member, the lower end surface of the mounting plate (6) being recessed upward to form a groove (61), and the groove (61) extending to the upper left end, and a vertically arranged limiting plate (5) being arranged at the lower end of the mounting plate (6), and the limiting plate (5) extending into the groove (61); A positioning assembly is installed at the top end of the groove (61), and the lower end of the positioning assembly is connected to the upper end of the limiting plate (5). A U-shaped plate (52) is movably installed at the lower end of the limiting plate (5), and the limiting plate (5) extends into the U-shaped plate (52). The U-shaped plate (52) is rotatably connected to the left end of the rotating shaft (9).
3. The polishing device for the outer cover of a fine-finished motor according to claim 2, characterized in that: The positioning assembly comprises an elastic member (62), the elastic member (62) being mounted on the top of the inner portion of the groove (61), a movable plate (63) arranged transversely being disposed at the lower end of the elastic member (62), the movable plate (63) being attached to the upper end of the limiting plate (5), the movable plate (63) being slidably connected in the groove (61), and the movable plate (63) extending out of the left side of the groove (61); The upper end surface of the limiting plate (5) is recessed downward to form a limiting hole (51); a vertically arranged limiting rod (64) is provided at the lower end of the movable plate (63), and the limiting rod (64) is located in the limiting hole (51); a vertically arranged telescopic rod (65) is installed between the upper end of the movable plate (63) and the top end of the groove (61), and the telescopic rod (65) is located on the inner side of the elastic member (62).
4. The polishing device for the outer cover of a fine-finished motor according to claim 2, characterized in that: The auxiliary component comprises a ring gear (24), the ring gear (24) is rotatably connected to the lower end of the cover plate (2), a pinion gear (25) is arranged at the outer end of the connecting shaft (22), and the pinion gear (25) is meshed with the inner right wall of the ring gear (24); A fixing plate (7) is arranged on the left side of the lower end of the ring gear (24), a transversely arranged connecting plate (23) is arranged on the left end of the ring gear (24), and the connecting plate (23) is attached to the lower end of the cover plate (2), and a mounting plate (6) is arranged on the lower end of the connecting plate (23).
5. The polishing device for the outer cover of a fine-finished motor according to claim 1, characterized in that: The lifting member comprises two lifting devices, the fixed parts of the two lifting devices are respectively mounted on the left and right ends of the straight cylinder (1), and the fixed parts of the lifting devices extend out of the lower side of the straight cylinder (1), and auxiliary plates (21) are arranged on the left and right ends of the cover plate (2), and the two auxiliary plates (21) are respectively connected to the movable parts of the two lifting devices.
6. The polishing device for the outer cover of a fine-finished motor according to claim 1, characterized in that: The plugging member comprises an annular bottom plate (17), the annular bottom plate (17) being mounted on the lower end of the straight cylinder (1), a tapered cylinder (14) being arranged narrow at the top and wide at the bottom being arranged on the inner wall of the annular bottom plate (17), the tapered cylinder (14) extending into the straight cylinder (1), the tapered cylinder (14) being located at the lower side of the electrode rod (3), the tapered cylinder (14), the annular bottom plate (17) and the straight cylinder (1) forming an integrated structure, a drainage pipe (101) with a control valve being arranged at the lower end of the annular bottom plate (17), the drainage pipe (101) penetrating the annular bottom plate (17) and being in communication with the straight cylinder (1).