Multifunctional motor stator hole polishing device

Abstract

The utility model discloses a kind of multi-functional motor stator hole polishing device, belong to motor production and processing equipment technical field, set on production line, including polishing section and blow washing section. Polishing section is constituted by upper polishing unit and lower positioning unit in lower side, dust baffle on polishing unit is sealed motor stator from upper side when polishing, while the air outlet on lower positioning unit is connected negative pressure tank and synchronously aspirates from lower side, realize polishing and dust removal integration. Blow washing section is constituted by upper blow washing unit and lower positioning unit in lower side, through cover plate sealing stator, realize the synergistic effect of upper high-pressure air blowing and lower negative pressure suction, and the stator is deeply cleaned. The utility model is through polishing and dust removal synchronization, purging and suction combined mode, controls and thoroughly removes processing dust from source, significantly improves product quality, improves production environment, protects equipment precision, and degree of automation is high, suitable for large-scale assembly line production.

Description

Technical Field

[0001] This utility model relates to the field of motor production and processing equipment technology, and in particular to a multifunctional motor stator inner hole grinding device. Background Technology

[0002] As the core power source for various mechanical equipment, the smoothness, efficiency, and lifespan of the electric motor are of paramount importance. Among the key components of the motor, the air gap accuracy between the stator and rotor is one of the core indicators determining the motor's performance. To ensure a uniform and precise air gap, the inner bore of the stator core is typically precision-machined after being pressed into the housing. This corrects for any minor deformations that may be caused by the pressing process and improves the surface finish and dimensional accuracy of the inner bore.

[0003] In existing technical solutions, using a high-speed rotating grinding head to grind the inner hole of the stator is a common and effective finishing method. Grinding can effectively remove burrs, oxide layers, and unevenness from the inner hole surface, thereby obtaining an ideal surface quality.

[0004] However, existing stator inner hole grinding processes and equipment generally suffer from a significant drawback: the dust management problem generated during the grinding process is not given sufficient attention. Specifically, the disadvantages are mainly reflected in the following aspects: Product contamination and potential quality hazards: A large amount of metal and abrasive dust generated during grinding will splash and adhere to the inner wall and slots of the stator core. If this conductive or semi-conductive dust is not thoroughly cleaned, it will directly affect the adhesion of subsequent insulating varnish, and may even peel off due to vibration during long-term motor operation, posing a serious threat to the insulation performance of the windings and shortening the motor's lifespan. Environmental pollution and harm to personnel health: Dust dispersed in the air of the workshop seriously pollutes the production environment and poses a potential hazard to the respiratory health of operators, failing to meet the requirements of modern clean production. Accelerated equipment wear and reduced processing accuracy: This abrasive dust will settle on precision moving parts such as guide rails and bearings of the grinding equipment, acting like an abrasive agent, accelerating equipment wear. Over time, this will lead to a decrease in the positioning accuracy of the equipment, ultimately affecting the stability of the grinding quality.

[0005] In summary, how to simultaneously and efficiently remove the dust generated during the processing while ensuring the grinding effect of the stator inner hole, and avoid its adverse effects on products, equipment and personnel, is a technical problem that urgently needs to be solved in the current motor processing field. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multifunctional motor stator inner hole grinding device. Through the special structural design of the grinding unit and the airflow flushing unit, this device not only avoids dust flying during the grinding process, but also removes the dust remaining inside, ensuring the good operation of the motor and processing equipment while ensuring the environment.

[0007] To achieve the above objectives, this application discloses a multifunctional motor stator inner hole grinding device, installed on a production line. The conveyor belt of the production line drives a fixture with a fixed motor stator through the grinding device. The grinding device includes: a grinding section consisting of a grinding unit and a lower positioning unit, and a blowing and washing section consisting of a blowing and washing unit and a lower positioning unit. The grinding unit includes a grinding support plate that is driven to rise and fall by a linear module. A grinding head driven by a motor is fixed on the grinding support plate. A dust baffle plate is also connected to the grinding support plate by a grinding guide rod. A return spring is provided on the grinding guide rod. The blowing and washing unit includes a blowing and washing support plate driven by a lifting module. An air inlet pipe is provided on the blowing and washing support plate. The lower end of the air inlet pipe communicates with a cover plate. The lower positioning unit includes a lower base plate that is driven to rise and fall by a lifting cylinder. A positioning rod is provided on the lower base plate. A lower guide rod is provided below the lower base plate. An air outlet is provided at the center of the lower base plate. The air outlet matches the inner diameter of the motor stator and communicates with a negative pressure box through a pipeline.

[0008] Furthermore, the dust baffle has a circular hole at its center to accommodate the passage of a grinding head, and the circular hole is directly larger than the diameter of the grinding head.

[0009] Furthermore, a polishing dust-blocking ring is provided on the lower surface of the dust-blocking plate; and a blowing dust-blocking ring is provided on the cover plate.

[0010] Furthermore, the fixture includes grippers for fixing the motor stator, and the main plate of the fixture is provided with positioning holes that match the positioning rod.

[0011] Furthermore, the fixture driven by the production line passes sequentially between the grinding unit and the lower positioning unit, and between the blowing and washing unit and the lower positioning unit.

[0012] Furthermore, the air inlet pipe on the blowing and washing unit is connected to a high-pressure air source.

[0013] Compared with the prior art, the present invention achieves the following significant beneficial effects through its innovative structural design: This invention achieves simultaneous grinding and dust removal, effectively preventing dust pollution: In the grinding section, a dust baffle that covers the motor stator and a negative pressure vent located below the stator create a sealed working space. All dust generated during grinding is forcibly drawn downwards by the negative pressure system and collected for centralized treatment. This fundamentally eliminates the possibility of dust splashing outwards, preventing dust from contaminating the stator winding slots, the workshop environment, and precision equipment, thereby ensuring the insulation performance of the product and the processing accuracy of the equipment.

[0014] A secondary purging process combined with negative pressure suction is implemented after the polishing process, with a dedicated purging section. A sealed space is created again through a cover plate, allowing high-pressure gas to be blown in from above while negative pressure suction is applied from below. This synergistic "blowing and suction" action thoroughly removes stubborn micro-dust adhering to the inner walls of the stator and deep within the slots, achieving thorough cleaning without any blind spots. This provides a clean substrate for subsequent processes such as insulating varnish spraying, further improving the final quality and reliability of the motor.

[0015] The enclosed operation improves the production environment and protects personnel health. Each section of this device is compactly designed and can be seamlessly integrated into existing production lines. Through the automatic movement of fixtures on the conveyor belt and the automated control of each functional unit, the entire process from positioning, grinding, dust removal to purging and cleaning is fully automated, resulting in high production efficiency and minimal human intervention, making it ideal for large-scale motor production. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a multifunctional motor stator inner hole grinding device according to this utility model.

[0018] Figure 2 This is a structural schematic diagram of the grinding section of this utility model in operation.

[0019] Figure 3 This is a structural schematic diagram of the working state of the blowing and washing section of this utility model.

[0020] Figure 4 This is a schematic diagram of the lower positioning unit of this utility model.

[0021] Figure 5 This is a schematic diagram of the overall operating state of this utility model.

[0022] Figure 6 This utility model Figure 5 A cross-sectional schematic diagram.

[0023] Figure 7 This utility model Figure 6 A magnified view of a portion of the image.

[0024] In the diagram: 1-Production line; 11-Conveyor belt; 2-Motor stator; 3-Clamp; 31-Gripper; 32-Main board; 33-Positioning hole; 4-Grinding unit; 41-Linear module; 42-Grinding support plate; 43-Motor; 44-Grinding head; 45-Grinding guide rod; 46-Dust baffle plate; 47-Grinding dust baffle ring; 48-Returning spring; 5-Lower positioning unit; 51-Lower base plate; 52-Lifting cylinder; 53-Positioning rod; 54-Lower guide rod; 55-Air outlet; 6-Blowing and washing unit; 61-Lifting module; 62-Blowing and washing support plate; 63-Air inlet pipe; 64-Cover plate; 65-Blowing and washing dust baffle ring; 7-Negative pressure box. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] A multifunctional motor stator inner hole grinding device is installed on a production line 1. The conveyor belt 11 of the production line 1 drives a clamp 3, on which a motor stator 2 is fixed, through the grinding device. The grinding device includes a grinding section consisting of a grinding unit 4 and a lower positioning unit 5, and a blowing and washing section consisting of a blowing and washing unit 6 and the lower positioning unit 5. The grinding unit 4 includes a grinding support plate 42 that is driven to rise and fall by a linear module 41. A grinding head 44 driven by a motor 43 is fixed on the grinding support plate 42. A dust baffle 46 is also connected to the grinding support plate 42 by a grinding guide rod 45. The grinding guide rod 45 is provided with a return spring 48; the blowing and washing unit 6 includes a blowing and washing support plate 62 driven by a lifting module 61, the blowing and washing support plate 62 is provided with an air inlet pipe 63, the lower end of the air inlet pipe 63 is connected to the cover plate 64; the lower positioning unit 5 includes a lower base plate 51, the lower base plate 51 is driven to rise and fall by a lifting cylinder 52, the lower base plate 51 is provided with a positioning rod 53, the lower base plate 51 is provided with a lower guide rod 54, the lower base plate is provided with an air outlet 55 at its center, the air outlet 55 is matched with the inner diameter of the motor stator and is connected to the negative pressure box 7 through a pipeline.

[0027] Please see Figure 1 and Figure 5 The multifunctional motor stator inner hole grinding device of this utility model is integrated into an automated production line 1. Multiple motor stators 2 to be processed are firmly fixed by the jaws 31 of the clamps 3. These clamps 3 are placed on the conveyor belt 11 of the production line 1, and as the conveyor belt runs, they pass through the grinding section and the blowing section in sequence, realizing fully automated grinding and cleaning operations.

[0028] Phase 1: Detailed operation of the grinding section, please refer to... Figure 2 , Figure 4 , Figure 6 and Figure 7 .

[0029] Feeding and Precise Positioning: When the conveyor belt 11 transports a fixture 3 carrying a motor stator 2 to directly below the grinding section, the conveyor belt 11 stops running. Immediately, the lower positioning unit 5 activates the lifting cylinder 52. The piston rod of the lifting cylinder 52 extends, pushing the lower base plate 51 vertically and smoothly upward under the guidance of the lower guide rod 54. The conical heads of the four positioning rods 53 on the lower base plate 51 are precisely aligned and inserted into the positioning holes 33 on the main plate 32 of the fixture 3. This achieves positioning and rigid locking of the motor stator 2, providing a stable foundation for subsequent grinding. Simultaneously, the upper edge of the air outlet 55 at the center of the lower base plate 51 is tightly fitted with the bottom surface of the fixture 3, forming a downward dust discharge channel.

[0030] Grinding and Synchronous Dust Removal: After positioning, the grinding unit 4 begins operation. The servo motor controlling the linear module 41 starts, driving the grinding support plate 42 to descend at a preset speed. During descent, the dust baffle 46, connected via the grinding guide rod 45, contacts the upper surface of the motor stator 2 before the grinding head 44. The grinding dust baffle ring 47, made of wear-resistant rubber and installed on the lower surface of the dust baffle 46, forms a flexible seal on the stator surface. As the grinding support plate 42 continues to descend, the return spring 48 is compressed, generating a continuous and stable pressure to ensure the reliability of the seal. At this time, the grinding motor 43 starts, driving the grinding head 44, made of materials such as cubic boron nitride, to rotate at a high speed of 10,000 RPM. The grinding head 44 passes through the through hole in the center of the dust baffle 46 and enters the inner hole of the stator. The linear module 41 controls the grinding head 44 to perform reciprocating grinding within the inner hole of the stator according to a preset program.

[0031] From the moment the grinding head 44 begins operation, the pressure chamber 7 generates a powerful negative pressure, forming a high-speed airflow from top to bottom within the stator's inner bore through the air outlet 55. All metal powder and abrasive debris generated during grinding are immediately captured by this airflow and rapidly drawn into the dust collection chamber of the negative pressure chamber 7, completely eliminating the possibility of dust leakage and deposition in the stator slots.

[0032] Reset and Transfer: After the grinding process is completed, the linear module 41 drives the grinding unit 4 to rise rapidly to the initial position. Subsequently, the solenoid valve of the lifting cylinder 52 reverses, the cylinder piston rod retracts, the lower positioning unit 5 descends and resets, and the clamp 3 continues to move forward on the conveyor belt 11.

[0033] Phase Two: Detailed Operation of the Blow-wash Section (See attached document) Figure 3 .

[0034] Feeding and positioning: Start the conveyor belt 11 to send the fixture 3, which has just been polished, to the adjacent blowing and washing section. Its positioning process is exactly the same as that of the polishing section, and the lower positioning unit 5 of this station completes the positioning and locking of the fixture 3.

[0035] High-pressure purging and secondary suction: After positioning, the purging unit 6 operates. Its lifting module 61 lowers the purging support plate 62, causing the cover plate 64 and the purging dust-blocking ring 65 below it to tightly press against the upper surface of the motor stator 2, forming a sealed operating space again. Then, clean, dry compressed air at a pressure of 0.5-0.7 MPa is injected at high speed into the sealed space through the air holes on the cover plate 64 via the air inlet pipe 63. Simultaneously, the negative pressure box 7 below remains operational.

[0036] This "blowing from above and sucking from below" collaborative working mode creates intense internal airflow disturbance and a powerful penetrating air curtain. The high-pressure airflow can completely peel off and blow away stubborn micron-sized dust that may have adhered to the inner wall of the stator and the deep gaps in the laminations due to static electricity or oil stains after the initial polishing. This dust is then captured and drawn away by the negative pressure airflow below, achieving a thorough and highly clean secondary cleaning of the stator's inner bore.

[0037] Reset and Discharge: After high-pressure air blowing for 1-2 seconds, the lifting module 61 drives the blowing unit 6 to rise and reset. The lower positioning unit 5 then descends and resets. At this point, the grinding and thorough cleaning of the inner hole of the motor stator 2 is complete. The conveyor belt 11 transports the processed stator to the subsequent insulation treatment or final assembly process. At the same time, the next stator to be processed enters the grinding section. The entire process is seamlessly connected and cyclical.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multifunctional motor stator inner hole grinding device, installed on a production line (1), wherein the conveyor belt (11) of the production line (1) drives a clamp (3) with a fixed motor stator (2) through the grinding device, characterized in that, The polishing device includes: a polishing section consisting of a polishing unit (4) and a lower positioning unit (5) and a blowing and washing section consisting of a blowing and washing unit (6) and a lower positioning unit (5); the polishing unit (4) includes a polishing support plate (42) that is driven to rise and fall by a linear module (41), a polishing head (44) driven by a motor (43) is fixed on the polishing support plate (42), and a dust baffle plate (46) is connected to the polishing support plate (42) by a polishing guide rod (45), and a return spring (48) is provided on the polishing guide rod (45); the blowing and washing unit (6) includes a polishing section consisting of a polishing unit (4) and a lower positioning unit (5); the polishing unit (4) includes a polishing section consisting of a polishing unit (4) and a lower positioning unit (5); the polishing unit (4) includes a polishing section consisting of a polishing unit (4) and a lower positioning unit (5); the polishing unit (4) includes a polishing section consisting of a polishing unit (4) and a lower positioning unit (5); the polishing unit (4) includes a polishing section consisting of a polishing unit (4) and a lower positioning unit (5); the polishing unit (4) includes a polishing section consisting of a polishing support plate (42) that is driven to rise and fall by a linear module (41); the polishing support plate (42) is fixed on the polishing support plate (42) by a polishing guide rod (45); the polishing support plate (4 ... The lifting module (61) drives the blowing support plate (62), and the blowing support plate (62) is provided with an air inlet pipe (63). The lower end of the air inlet pipe (63) is connected to the cover plate (64). The lower positioning unit (5) includes a lower base plate (51). The lower base plate (51) is driven to lift by a lifting cylinder (52). The lower base plate (51) is provided with a positioning rod (53). The lower base plate (51) is provided with a lower guide rod (54). The lower base plate is provided with an air outlet (55) at its center. The air outlet (55) is matched with the inner diameter of the motor stator and is connected to the negative pressure box (7) through a pipeline.

2. The multifunctional motor stator inner hole grinding device according to claim 1, characterized in that: The dust baffle (46) has a circular hole at its center to accommodate the passage of the grinding head (44), and the circular hole is directly larger than the diameter of the grinding head (44).

3. The multifunctional motor stator inner hole grinding device according to claim 1, characterized in that: The lower surface of the dust baffle (46) is provided with a polishing dust baffle ring (47); the cover plate (64) is provided with a blowing dust baffle ring (65).

4. The multifunctional motor stator inner hole grinding device according to claim 1, characterized in that: The clamp (3) includes a gripper (31) for fixing the motor stator (2), and the main board (32) of the clamp (3) is provided with a positioning hole (33) that matches the positioning rod (53).

5. The multifunctional motor stator inner hole grinding device according to claim 1, characterized in that: The fixture (3) driven by the production line (1) passes sequentially between the grinding unit (4) and the lower positioning unit (5) and between the blowing and washing unit (6) and the lower positioning unit (5).

6. The multifunctional motor stator inner hole grinding device according to claim 1, characterized in that: The air inlet pipe (63) on the blowing and washing unit (6) is connected to a high-pressure air source.

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