Grinding device for lightweight micromotor shell

Abstract

The invention belongs to the technical field of machine tool machining, and particularly relates to a grinding device for a lightweight micromotor shell, which comprises a base and a transfer assembly arranged on the outer side of the base, and further comprises a plurality of storage positioning assemblies, a screw rod pushing assembly and a flexible grinding assembly which are correspondingly arranged in position, the storage positioning assembly and the lead screw pushing assembly are both fixed to the base, and the lead screw pushing assembly is arranged on one side of the storage positioning assembly and used for lifting a micromotor shell stored in the storage positioning assembly to a grinding station. The flexible grinding assembly is fixed to the top of the transferring assembly. By means of low-cost, accurate and rapid feeding, synchronous grinding of multiple workpieces, pressure adjustment according to needs, synchronous scrap cleaning and blowing and heat dissipation and synchronous and rapid discharging, the interval time of the whole process of feeding, grinding and discharging is greatly shortened, and the machining continuity, the grinding quality and the overall machining efficiency are effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of machine tool processing technology, and in particular relates to a grinding device for a lightweight micro motor housing. Background Technology

[0002] With the rapid development of industries such as new energy vehicles, smart homes, and portable electronic devices, lightweight micro motors are experiencing continuous market demand growth due to their significant advantages of small size, low energy consumption, and high efficiency. As the core protective and supporting component of the motor, the machining precision of the micro motor housing directly determines the motor's assembly clearance, heat dissipation performance, and operational stability. The inner wall grinding process is a crucial step in ensuring the dimensional tolerances and surface roughness of the housing.

[0003] These lightweight micro-motor housings are mostly made of lightweight metal materials such as aluminum alloy, magnesium alloy, and titanium alloy. They are generally designed as thin-walled cylindrical structures with an inner diameter ranging from 5 to 50 mm and a wall thickness of only 0.8 to 3 mm. They have strict requirements for processing precision—the inner wall dimensional tolerance must be controlled within ±0.01-0.05 mm, and the surface roughness Ra≤0.8 μm, in order to meet the needs of subsequent motor assembly and efficient heat dissipation.

[0004] Currently, the grinding technology for the inner wall of cylindrical micro-motor housings mainly employs traditional processes such as small grinding wheel grinding, belt grinding, and diamond grinding head grinding. However, these technical solutions have several pain points that urgently need to be addressed: First, traditional grinding tools are mostly rigid structures, and when in contact with thin-walled housings, the pressure is concentrated, which easily causes damage such as elliptical deformation of the housing and scratches on the inner wall. For example, the wiper motor housing grinding device proposed in patent publication number CN118288124A uses high-hardness grinding rollers for processing, which can improve grinding efficiency, but the damage to thin-walled structures is particularly prominent. Second, the adaptability is poor, and it is difficult to flexibly adjust the grinding parameters for housings of different materials and hardness, which easily leads to uneven grinding and poor product precision consistency. Third, the processing mode is limited, mostly single-station processing, which can only grind one workpiece at a time, and additional auxiliary equipment is required for loading and unloading, which not only increases production costs, but also makes the loading-grinding-unloading workflow relatively scattered, resulting in poor production continuity and seriously restricting the improvement of overall processing efficiency. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a lightweight grinding device for micro motor housings.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a lightweight micro motor housing grinding device, comprising a base and a transfer assembly disposed on the outside of the base, and further comprising: a material storage and positioning assembly, a lead screw pushing assembly and a flexible grinding assembly disposed at multiple corresponding positions, wherein the material storage and positioning assembly and the lead screw pushing assembly are both fixed on the base, the lead screw pushing assembly is disposed on one side of the material storage and positioning assembly to lift the micro motor housing stored in the material storage and positioning assembly to the grinding station, and the flexible grinding assembly is fixed on the top of the transfer assembly;

[0007] The flexible grinding assembly includes a hollow roller, and multiple pneumatic telescopic components are uniformly and fixedly connected to the outer side of the hollow roller. The moving ends of the multiple pneumatic telescopic components located on the same side are fixedly connected to the same hard brush plate. Multiple blow tubes are also fixedly connected to the outer wall of the hollow roller.

[0008] It is known that traditional grinding techniques for the inner wall of cylindrical micro-motor housings mainly employ small grinding wheels, belt grinding, and diamond grinding heads. However, cylindrical housings have thin walls and weak rigidity, and concentrated grinding pressure can easily lead to elliptical deformation of the housing and indentation of the inner wall. In particular, lightweight metal materials have high ductility, and once deformed, they cannot be repaired. Furthermore, the grinding surface of the grinding wheel / head is a fixed shape, which makes it difficult to completely conform to the arc surface of the inner wall of the cylinder, easily resulting in "over-grinding at both ends and under-grinding in the middle," leading to excessive deviation in the cylindricity of the inner wall. In addition, rigid grinding is prone to producing scratches and burrs, requiring an additional polishing process. Therefore, this solution is adopted, which uses a hard-bristled brush plate for grinding. The bristles have micro-elasticity and disperse the grinding pressure through their own deformation upon contact, forming a surface contact with the inner wall of the cylinder rather than a point contact. The radial pressure that it can withstand is only 1 / 5 to 1 / 3 of that of a traditional grinding wheel, effectively avoiding deformation of the thin-walled shell. Furthermore, the high-density bristles can adapt to the curved surface of the inner wall of the cylinder, covering the grinding area 360° without dead angles. The wear-resistant particles at the tips of the bristles uniformly remove impurities and oxide layers from the inner wall, and the surface roughness can be stably controlled, eliminating the need for subsequent polishing and simplifying the processing procedure.

[0009] In the aforementioned lightweight micro motor housing grinding device, the transfer assembly includes two electric slide rails symmetrically arranged about the base. The moving end of each electric slide rail is fixedly connected to an electric lifting rod, and the top ends of the two electric lifting rods are fixedly connected to the same mounting plate.

[0010] In the aforementioned lightweight micro-motor housing grinding device, the material storage and positioning component includes a material storage shell fixed on a base. The top of the material storage shell is open, and strip-shaped through-holes are provided on both opposite sides of the material storage shell. U-shaped fixing plates are fixedly connected to the top opposite sides of the material storage shell. Multiple electric push rods are fixedly inserted on the U-shaped fixing plates. The moving ends of the multiple electric push rods are fixedly connected to the same arc-shaped clamping plate. A rectangular through-hole for the arc-shaped clamping plate to pass through is provided on the top side wall of the material storage shell.

[0011] It is known that traditional grinding of micro-motor housings involves manual or robotic loading, which is costly and time-consuming, making continuous loading impossible for efficient grinding. Therefore, this solution enables continuous loading at a fixed station, with the loading interval being only the fixed time required for a single micro-motor housing to move upwards, significantly reducing loading time and effectively improving production continuity.

[0012] In the aforementioned lightweight micro-motor housing grinding device, the lead screw pushing assembly includes an L-shaped support plate fixed on a base. A vertically arranged rotating lead screw is rotatably connected between the L-shaped support plate and the base. A servo motor for driving the rotating lead screw to rotate is fixedly installed on the top of the L-shaped support plate. A lifting block is threaded onto the wall of the rotating lead screw. A pushing plate is fixedly connected to the upper side of the lifting block via a lifting rod. The pushing plate extends into the storage shell through a strip-shaped through-hole opened on the side wall of the storage shell.

[0013] By adopting the above technical solution and utilizing the precise movement of the rotating lead screw, the feeding and positioning distance of small-sized micro motor housings can be effectively adapted, resulting in more accurate feeding.

[0014] In the aforementioned lightweight micro-motor housing grinding device, the flexible grinding assembly further includes a linear motor fixed to the lower side of the mounting plate. A U-shaped positioning plate is fixedly connected to the lower moving end of the linear motor. A deflection seat is rotatably connected inside the U-shaped positioning plate. A rotary motor for driving the deflection seat to rotate is fixedly installed on the outer wall of the U-shaped positioning plate. A connecting pipe is rotatably sleeved on the lower side wall of the deflection seat. One end of the connecting pipe is fixedly connected to a hollow roller. A motor drive assembly for driving the connecting pipe to rotate is fixedly installed on the side wall of the deflection seat. An air supply assembly connected to the pneumatic telescopic assembly and the blower is also fixedly installed on the deflection seat.

[0015] In the aforementioned lightweight micro-motor housing grinding device, the pneumatic telescopic assembly includes a pneumatic cylinder fixedly connected to the outer wall of a hollow roller. A piston is sealed inside the pneumatic cylinder. An extension rod is fixedly connected to the side of the piston away from the hollow roller. The end of the extension rod away from the piston passes through the outside of the pneumatic cylinder and is fixedly connected to the inner side of a hard brush plate. A return spring sleeved on the outside of the extension rod is fixedly connected between the piston and the pneumatic cylinder.

[0016] In the aforementioned lightweight micro-motor housing grinding device, the air supply assembly includes a double-pass pipe fixed inside a hollow roller and a connecting pipe. One branch of the double-pass pipe is connected to multiple air cylinders, and the other branch of the double-pass pipe is connected to multiple blow nozzles. The end of the double-pass pipe extends out of the connecting pipe and is rotatably connected to an air supply pipe through a rotary sealing joint. An air supply pump is installed on the air supply pipe and is fixed outside the deflection seat. An electrically controlled valve is installed on each of the two branches of the double-pass pipe, and a pressure gauge is installed on the branch of the double-pass pipe connected to the air cylinder.

[0017] In the aforementioned lightweight micro motor housing grinding device, the blow tube is inclined on the side away from the deflector seat, and the inclination angle is 45°.

[0018] Compared with existing technologies, the advantages of this invention are as follows:

[0019] 1. With the set material storage and positioning components and lead screw pushing components, it can carry out fast and accurate material feeding, which effectively improves the continuity of processing, and does not require complicated robotic arms for material feeding, resulting in low cost and higher efficiency.

[0020] 2. Through the flexible grinding components, pneumatic telescopic components, and air supply components, multiple micro motor housings can be ground simultaneously. The grinding pressure can be adjusted according to the material and hardness of the micro motor housing. During grinding, waste chips can be quickly blown away and heat can be efficiently discharged, effectively improving grinding quality and efficiency.

[0021] 3. Through the U-shaped positioning plate, deflection seat, rotary motor and spray nozzle of the set transfer component, the material unloading work can be carried out simultaneously and quickly, which greatly shortens the entire working interval time of loading-grinding-unloading and effectively improves processing efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural schematic diagram of the transfer component of the present invention;

[0024] Figure 3 This is a three-dimensional structural schematic diagram of the material storage and positioning component of the present invention;

[0025] Figure 4 yes Figure 3 A three-dimensional structural diagram of the installation of the electric actuator and the arc-shaped clamping plate;

[0026] Figure 5 This is a three-dimensional structural schematic diagram of the lead screw pushing assembly of the present invention;

[0027] Figure 6This is a three-dimensional structural schematic diagram of the flexible grinding component of the present invention;

[0028] Figure 7 yes Figure 6 An enlarged schematic diagram of part A in the middle;

[0029] Figure 8 This is a cross-sectional structural schematic diagram of the pneumatic telescopic component of the present invention.

[0030] In the diagram: 1. Base; 2. Transfer assembly; 21. Electric slide rail; 22. Electric lifting rod; 23. Mounting plate; 3. Material storage and positioning assembly; 31. Material storage shell; 32. U-shaped fixing plate; 33. Electric push rod; 34. Arc-shaped clamping plate; 4. Screw pushing assembly; 41. L-shaped support plate; 42. Rotating screw; 43. Servo motor; 44. Lifting block; 45. Lifting rod; 46. Pushing plate; 5. Flexible grinding assembly; 51. Hollow roller; 52. Pneumatic telescopic assembly; 52. 1. Pneumatic cylinder, 522. Piston, 523. Extension rod, 524. Return spring, 53. Hard brush plate, 54. Blower, 55. Linear motor, 56. U-shaped positioning plate, 57. Deflection seat, 58. Rotary motor, 59. Connecting pipe, 510. Motor drive assembly, 511. Air supply assembly, 5111. Two-way pipe, 5112. Rotary sealing joint, 5113. Air supply pipe, 5114. Air pump, 5115. Electrically controlled valve, 5116. Barometer. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] like Figures 1-8 As shown, a lightweight micro motor housing grinding device includes a base 1 and a transfer component 2 disposed on the outside of the base 1. It also includes a storage and positioning component 3, a lead screw pushing component 4 and a flexible grinding component 5 disposed at multiple positions. The storage and positioning component 3 and the lead screw pushing component 4 are both fixed on the base 1. The lead screw pushing component 4 is disposed on one side of the storage and positioning component 3 to lift the micro motor housing stored in the storage and positioning component 3 to the grinding station. The flexible grinding component 5 is fixed on the top of the transfer component 2.

[0033] The flexible grinding assembly 5 includes a hollow roller 51. Multiple pneumatic telescopic components 52 are uniformly fixedly connected to the outer side of the hollow roller 51. The moving ends of the multiple pneumatic telescopic components 52 located on the same side are fixedly connected to the same hard brush plate 53. Multiple blow tubes 54 are also fixedly connected to the outer wall of the hollow roller 51.

[0034] As a preferred embodiment of the present invention, refer to Figure 1 and Figure 2The transfer assembly 2 includes two electric slide rails 21 symmetrically arranged about the base 1. The moving end of the electric slide rail 21 is fixedly connected to an electric lifting rod 22, and the top ends of the two electric lifting rods 22 are fixedly connected to the same mounting plate 23.

[0035] Under the above settings, the electric slide rail 21 can drive the mounting plate 23 to move quickly back and forth, thereby realizing the rapid switching between grinding and unloading stations.

[0036] As a preferred embodiment of the present invention, refer to Figure 1 , Figure 3 and Figure 4 The material storage and positioning component 3 includes a material storage shell 31 fixed on the base 1. The top of the material storage shell 31 is open, and strip-shaped through holes are opened on both opposite sides of the material storage shell 31. The top two sides of the material storage shell 31 are fully open, so that both ends of the topmost micro motor shell are fully exposed for easy grinding. U-shaped fixing plates 32 are fixedly connected to the opposite sides of the top of the material storage shell 31. Multiple electric push rods 33 are fixedly inserted on the U-shaped fixing plate 32. The moving ends of the multiple electric push rods 33 are fixedly connected to the same arc-shaped clamping plate 34. A rectangular through hole is opened on the top side wall of the material storage shell 31 for the arc-shaped clamping plate 34 to pass through.

[0037] Under the above-mentioned conditions, multiple micro motor housings are stacked in an orderly manner, and rapid pushing can be achieved during material feeding. The electric push rod 33 can move the arc-shaped clamping plate 34 to fix the micro motor housing from the outside, effectively improving positioning efficiency. Compared with the traditional fixing method using different positioning clamps, it is more efficient and convenient.

[0038] As a preferred embodiment of the present invention, refer to Figure 1 and Figure 5 The lead screw pushing assembly 4 includes an L-shaped support plate 41 fixed on the base 1. A vertically arranged rotating lead screw 42 is rotatably connected between the L-shaped support plate 41 and the base 1. A servo motor 43 for driving the rotating lead screw 42 to rotate is fixedly installed on the top of the L-shaped support plate 41. A lifting block 44 is threadedly sleeved on the rod wall of the rotating lead screw 42. A limit slider is fixedly connected to the side wall of the lifting block 44. A limit groove matching the limit slider is opened on the inner side of the L-shaped support plate 41. A push plate 46 is fixedly connected to the upper end of the lifting block 44 through a lifting rod 45. The push plate 46 extends into the storage shell 31 through a strip-shaped through-hole opened on the side wall of the storage shell 31.

[0039] Under the above-mentioned conditions, the precision transmission of the rotating lead screw 42 can achieve accurate feeding and improve the accuracy of continuous feeding.

[0040] As a preferred embodiment of the present invention, refer to Figure 1 , Figure 6 and Figure 7 The flexible grinding assembly 5 also includes a linear motor 55 fixed to the lower side of the mounting plate 23. A U-shaped positioning plate 56 is fixedly connected to the lower moving end of the linear motor 55. A deflection seat 57 is rotatably connected inside the U-shaped positioning plate 56. A rotary motor 58 for driving the deflection seat 57 to rotate is fixedly installed on the outer wall of the U-shaped positioning plate 56. A connecting pipe 59 is rotatably sleeved on the lower side wall of the deflection seat 57. One end of the connecting pipe 59 is fixedly connected to the hollow roller 51. A motor drive assembly 510 for driving the connecting pipe 59 to rotate is fixedly installed on the side wall of the deflection seat 57. An air supply assembly 511 connected to the pneumatic telescopic assembly 52 and the blower 54 is also fixedly installed on the deflection seat 57.

[0041] Under the above settings, multiple micro-motor housings can be ground efficiently simultaneously, and a cleaning force can be provided during the grinding process to quickly remove the generated chips and heat, thereby improving the grinding quality.

[0042] As a preferred embodiment of the present invention, refer to Figure 8 The pneumatic telescopic assembly 52 includes a pneumatic cylinder 521 fixedly connected to the outer wall of the hollow roller 51. A piston 522 is sealed inside the pneumatic cylinder 521. An extension rod 523 is fixedly connected to the side of the piston 522 away from the hollow roller 51. The end of the extension rod 523 away from the piston 522 passes through the outside of the pneumatic cylinder 521 and is fixedly connected to the inside of the rigid brush plate 53. A return spring 524 sleeved on the outside of the extension rod 523 is fixedly connected between the piston 522 and the pneumatic cylinder 521.

[0043] Under the above settings, different grinding pressures can be generated between the hard brush plate 53 and the micro motor housing, thereby adapting to the processing and use of micro motor housings with different hardness and materials, and thus having a wider range of applications.

[0044] As a preferred embodiment of the present invention, refer to Figure 6 and Figure 7 The air supply assembly 511 includes a double-pipe 5111 fixed inside the hollow roller 51 and the connecting pipe 59. One branch of the double-pipe 5111 is connected to multiple air cylinders 521, and the other branch of the double-pipe 5111 is connected to multiple spray nozzles 54. The end of the double-pipe 5111 extends out of the connecting pipe 59 and is rotatably connected to an air supply pipe 5113 through a rotary sealing joint 5112. An air supply pump 5114 is installed on the air supply pipe 5113 and is fixed outside the deflection seat 57. An electric control valve 5115 is installed on each of the two branches of the double-pipe 5111, and a pressure gauge 5116 is installed on the branch of the double-pipe 5111 that is connected to the air cylinder 521.

[0045] As a preferred embodiment of the present invention, refer to Figure 6The blow nozzle 54 is tilted on the side away from the deflector seat 57 at an angle of 45°.

[0046] Under the above settings, the waste chips and heat generated during the grinding process can be effectively discharged directly from the micro motor housing, and air thrust can be provided during material feeding to achieve efficient material feeding.

[0047] The operating principle of the present invention is described as follows: The micro motor housing to be processed is stacked in the storage shell 31, and the electric slide rail 21 drives the mounting plate 23 to move the grinding assembly to the top side of the storage shell 31.

[0048] Servo motor 43 drives the rotating screw 42 to rotate. Through the threaded connection between the rotating screw 42 and the lifting block 44, the lifting block 44, together with the lifting rod 45, drives the push plate 46 to move upward. The push plate 46 moves the micro motor housing stacked in the storage shell 31 upward to a fixed height. This height is equal to the outer diameter of the micro motor housing, thereby moving the uppermost micro motor housing to the top position inside the storage shell 31, i.e., the grinding station. At this time, the electric push rod 33 pushes the arc-shaped clamping plate 34 to move and extend into the storage shell 31, and clamps the micro motor housing from the outside.

[0049] Linear motor 55 drives deflector 57 and hollow roller 51 to move, causing hollow roller 51 to enter the micro motor housing. First, the electrically controlled valve 5115 on the branch pipe connecting the double-pass pipe 5111 inside the air supply assembly 511 to the pneumatic cylinder 521 inside the pneumatic telescopic assembly 52 is opened, controlling the air supply pump 5114 to operate. The air supply pump 5114 supplies air to the double-pass pipe 5111 through the air supply pipe 5113, and then supplies air to the pneumatic cylinder 521, causing the air pressure inside the pneumatic cylinder 521 to gradually increase, thereby driving piston 522 to overcome the return spring 52. The elastic force of 4 pushes the extension rod 523 and the hard brush plate 53 outward, so that the hard brush plate 53 abuts against the inside of the micro motor housing until the first air pressure threshold set by the barometer 5116 is reached. At this time, the air supply pump 5114 stops working and closes the electric control valve 5115 on the branch pipe connected to the air cylinder 521 on the double pipe 5111. The specific setting value of the first air pressure threshold here is based on the material and hardness of the micro motor housing, so that the hard brush plate 53 can generate different grinding pressures to adapt to different grinding processes.

[0050] The motor drive assembly 510 drives the connecting pipe 59 to rotate at high speed, which in turn drives the hollow roller 51 to rotate at high speed. The hard brush plate 53 performs flexible grinding work inside the micro motor housing. During the grinding work, the linear motor 55 drives the hollow roller 51 to move the hard brush plate 53 back and forth, ensuring that the inner wall of the micro motor housing is fully ground, and avoiding the problem of incomplete grinding caused by the gap between the brushes of the hard brush plate 53.

[0051] During the grinding process, the air supply pump 5114 is controlled to work again, and the electric control valve 5115 on the branch pipe of the double pipe 5111 that is connected to multiple blow cylinders 54 is opened, so that the high pressure air at the output end of the air supply pump 5114 is sprayed out through multiple blow cylinders 54. Since the blow cylinders 54 and the hard brush plate 53 are spaced apart, a blow airflow can be formed during the grinding process, and the waste chips generated during the grinding process are discharged through the opening at the end of the micro motor housing away from the deflection seat 57. By discharging the heat generated during the grinding process outside the micro motor housing, the problem of residual waste chips and heat affecting the grinding quality is avoided.

[0052] After the grinding work is completed, the control motor drive assembly 510 stops working, and the solenoid valve 5115 on the branch pipe of the double-pass pipe 5111 connected to the air cylinder 521 is opened again, while the solenoid valve 5115 on the branch pipe of the double-pass pipe 5111 connected to the blow pipe 54 is closed. As the air supply pump 5114 continues to supply air, the air pressure in the air cylinder 521 is further increased, increasing the supporting pressure between the hard brush plate 53 and the micro motor housing, until the pressure gauge 5116 reaches the set second air pressure threshold. At this time, the control air supply pump 5114 stops working, and the solenoid valve 5115 on the branch pipe of the double-pass pipe 5111 connected to the air cylinder 521 is closed. The electric lifting rod 22 pushes the mounting plate 23 upward, thereby driving multiple hollow rollers 51 upward, lifting the ground micro motor housing out of the storage shell 31. At the top, the electric slide rail 21 drives the mounting plate 23 to move to the unloading position. The rotary motor 58 drives the deflector seat 57 to tilt, so that the hollow roller 51 is tilted downward away from the deflector seat 57. At the same time, the electric control valve 5115 on the branch pipe connecting the double pipe 5111 and the air cylinder 521 is opened first, and the air supply pump 5114 is driven to work in reverse to reduce the gas pressure in the air cylinder 521. Under the action of the return spring 524, the hard brush plate 53 is reset and moved, disengaging from the fixed contact with the micro motor housing. Then, the current electric control valve 5115 is closed, and the electric control valve 5115 on the branch pipe connecting the double pipe 5111 and the blower 54 is opened. The air supply pump 5114 continues to work, and the airflow sprayed by the blower 54 provides an airflow thrust to the micro motor housing, assisting the micro motor housing to achieve rapid unloading.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A grinding device for light-weight micro motor housings, comprising a base (1) and a transfer assembly (2) arranged on the outside of the base (1), characterized in that Also includes: The storage positioning component (3), the lead screw pushing component (4), and the flexible grinding component (5) are set at multiple positions. The storage positioning component (3) and the lead screw pushing component (4) are both fixed on the base (1). The lead screw pushing component (4) is set on one side of the storage positioning component (3) to lift the micro motor housing stored in the storage positioning component (3) to the grinding station. The flexible grinding component (5) is fixed on the top of the transfer component (2). The flexible grinding assembly (5) includes a hollow roller (51), and multiple pneumatic telescopic components (52) are uniformly and fixedly connected to the outer side of the hollow roller (51). The moving ends of the multiple pneumatic telescopic components (52) located on the same side are fixedly connected to the same hard brush plate (53). Multiple blow tubes (54) are also fixedly connected to the outer wall of the hollow roller (51).

2. The grinding device for a light-weight micro-motor housing according to claim 1, characterized in that, The transfer assembly (2) includes two electric slide rails (21) symmetrically arranged about the base (1). The moving end of the electric slide rail (21) is fixedly connected to an electric lifting rod (22), and the top ends of the two electric lifting rods (22) are fixedly connected to the same mounting plate (23).

3. The grinding device for a light-weight micro-motor housing according to claim 1, characterized in that, The storage positioning component (3) includes a storage shell (31) fixed on the base (1). The top of the storage shell (31) is set as an opening. Both sides of the storage shell (31) are provided with strip-shaped through holes. Both opposite sides of the top of the storage shell (31) are fixedly connected with U-shaped fixing plates (32). Multiple electric push rods (33) are fixedly inserted on the U-shaped fixing plate (32). The moving ends of the multiple electric push rods (33) are fixedly connected to the same arc-shaped clamping plate (34). The top side wall of the storage shell (31) is provided with a rectangular through hole for the arc-shaped clamping plate (34) to pass through.

4. The grinding device for a lightweight micro-motor housing according to claim 3, characterized in that, The lead screw pushing assembly (4) includes an L-shaped support plate (41) fixed on the base (1). A vertically arranged rotating lead screw (42) is rotatably connected between the L-shaped support plate (41) and the base (1). A servo motor (43) for driving the rotating lead screw (42) to rotate is fixedly installed on the top of the L-shaped support plate (41). A lifting block (44) is threaded onto the rod wall of the rotating lead screw (42). A pushing plate (46) is fixedly connected to the upper side of the lifting block (44) through a lifting rod (45). The pushing plate (46) extends into the storage shell (31) through a strip-shaped through-hole opened on the side wall of the storage shell (31).

5. The grinding device for a lightweight micro-motor housing according to claim 2, characterized in that, The flexible grinding assembly (5) also includes a linear motor (55) fixed on the lower side of the mounting plate (23). The lower moving end of the linear motor (55) is fixedly connected to a U-shaped positioning plate (56). A deflection seat (57) is rotatably connected inside the U-shaped positioning plate (56). A rotary motor (58) for driving the deflection seat (57) to rotate is fixedly installed on the outer wall of the U-shaped positioning plate (56). A connecting pipe (59) is rotatably sleeved on the lower side wall of the deflection seat (57). One end of the connecting pipe (59) is fixedly connected to the hollow roller (51). A motor drive assembly (510) for driving the connecting pipe (59) to rotate is fixedly installed on the side wall of the deflection seat (57). An air supply assembly (511) connected to the pneumatic telescopic assembly (52) and the blower (54) is also fixedly installed on the deflection seat (57).

6. The grinding device for a lightweight micro-motor housing according to claim 5, characterized in that, The pneumatic telescopic assembly (52) includes a pneumatic cylinder (521) fixedly connected to the outer wall of the hollow roller (51). A piston (522) is sealed inside the pneumatic cylinder (521). An extension rod (523) is fixedly connected to the side of the piston (522) away from the hollow roller (51). The end of the extension rod (523) away from the piston (522) passes through the outside of the pneumatic cylinder (521) and is fixedly connected to the inside of the hard brush plate (53). A return spring (524) sleeved on the outside of the extension rod (523) is fixedly connected between the piston (522) and the pneumatic cylinder (521).

7. The grinding device for a lightweight micro-motor housing according to claim 6, characterized in that, The air supply assembly (511) includes a double-pass pipe (5111) fixed inside the hollow roller (51) and the connecting pipe (59). One branch of the double-pass pipe (5111) is connected to multiple air cylinders (521), and the other branch of the double-pass pipe (5111) is connected to multiple spray nozzles (54). The end of the double-pass pipe (5111) extends out of the connecting pipe (59) and is rotatably connected to an air supply pipe (5113) through a rotary sealing joint (5112). An air supply pump (5114) is installed on the air supply pipe (5113). The air supply pump (5114) is fixed outside the deflection seat (57). An electric control valve (5115) is installed on each of the two branches of the double-pass pipe (5111). A barometer (5116) is installed on the branch of the double-pass pipe (5111) connected to the air cylinder (521).

8. The grinding device for a lightweight micro-motor housing according to claim 5, characterized in that, The blow tube (54) is tilted on the side away from the deflector (57) at an angle of 45°.

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