Rotor outer diameter tolerance handling apparatus

Abstract

This utility model discloses a rotor outer diameter tolerance processing device, which includes a machine base, a vibratory feeder, a first linear module, a lifting cylinder, a clamping cylinder, a grinding clamping part, a receiving plate, a transverse cylinder, a translation module, a grinding motor, a cutting fluid protection device, and a discharge sheet metal part. This application can achieve efficient and precise processing of the outer diameter of the rotor permanent magnet through vibration feeding, automatic clamping, precise grinding, and discharge functions, significantly improving production efficiency and processing accuracy. At the same time, it can adapt to the processing needs of rotors of various specifications, effectively prevent cutting fluid splashing and rotor instability, and has important industrial application value.

Description

Technical Field

[0001] This utility model relates to the technical field of external grinding equipment, and in particular to equipment for processing rotor outer diameter tolerances. Background Technology

[0002] In the field of micro-motor manufacturing, rotors, as core components, are widely used in devices such as electric toothbrushes and high-speed hair dryers. A rotor typically consists of a shaft and a permanent magnet mounted on the shaft, its structure resembling a flat-head screw. The permanent magnet is a hollow cylinder with an outer diameter larger than the outer diameter of the shaft and is fixedly connected to it. Since the internal diameter of the stator is uniform, the outer diameter of the produced rotor also has strict dimensional requirements. It is essential to ensure that the dimensions of each rotor remain within a certain tolerance range to meet assembly and performance requirements. However, in actual production, controlling the rotor's outer diameter tolerance faces numerous challenges. Traditional processing methods often rely on manual operation or simple mechanical equipment, which is not only inefficient but also makes it difficult to guarantee the consistency and accuracy of the rotor's outer diameter in mass production. Furthermore, existing processing equipment has significant shortcomings in terms of automation, processing accuracy, and the ability to adapt to rotors of different sizes, leading to increased production costs and unstable product quality. Therefore, developing an automated device capable of efficiently and accurately processing rotor outer diameter errors has become a pressing technical challenge. By achieving automated grinding and tolerance control of the rotor's outer diameter, not only can production efficiency be improved, but product consistency and reliability can also be significantly enhanced, thereby meeting the modern industrial demand for high-precision micro motors. Utility Model Content

[0003] The purpose of this invention is to provide a rotor outer diameter tolerance processing device to overcome the shortcomings of the existing technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A rotor outer diameter tolerance processing device includes a machine base, on which a vibratory feeder, a first linear module, a lifting cylinder, a clamping cylinder, a grinding clamping part, a receiving plate, a transverse cylinder, a translation module, a grinding motor, a cutting fluid protection device, and a discharge sheet metal part are arranged. Wherein:

[0006] The vibratory feeder is used to arrange the rotors in a predetermined order and convey them to the rotor stops via vibration, awaiting gripping. The discharge end of the vibratory feeder is positioned to match the rotor stops, ensuring that the rotors remain stable and orderly arranged during conveying. Furthermore, the vibration frequency and amplitude of the vibratory feeder can be adjusted according to the rotor specifications to accommodate the conveying needs of rotors of different sizes and weights.

[0007] The first linear module is mounted on the machine base, and its output end is connected to a lifting cylinder and a pressing cylinder, which are used to drive the lifting cylinder and the pressing cylinder to move laterally, realizing the position switching of the rotor between different workstations. The slide rail of the first linear module adopts a high-precision linear guide rail to ensure positioning accuracy and stability during movement. In particular, the drive mechanism of the first linear module is a ball screw structure driven by a servo motor, which can achieve precise displacement control.

[0008] The lifting cylinder is mounted on the first linear module, and its output end is connected to a clamping cylinder for clamping the rotor and moving it from the rotor stop to the grinding clamping part. The piston rod of the lifting cylinder moves up and down through a guide mechanism, which adopts a double guide column structure to prevent the clamping cylinder from shifting or shaking during the lifting process. Furthermore, the stroke range of the lifting cylinder is set according to the distance between the rotor stop and the grinding clamping part to ensure that the clamping cylinder can accurately switch between the two positions.

[0009] The clamping cylinder has flexible grippers at its clamping end. The inner surface of the flexible grippers has anti-slip textures to enhance the clamping force on the rotor and prevent damage to the rotor surface. In particular, the clamping force of the clamping cylinder can be controlled by adjusting the air pressure to adapt to the clamping requirements of rotors of different materials and weights.

[0010] The grinding clamping part includes a control shaft drive motor, a driving wheel, a driven wheel, and a clamping wheel. The control shaft drive motor is fixedly mounted on the machine base, and its output shaft is fixedly connected to the driving wheel. The driving wheel and the driven wheel are spaced apart to clamp the rotor. Furthermore, the driven wheel is rotatably connected to the machine base via bearings, ensuring that the driven wheel rotates synchronously with the driving wheel. The piston rod end of the pressing cylinder is connected to the clamping wheel via a hinge mechanism. The clamping wheel is used to press the rotor between the driving wheel and the driven wheel, ensuring that the rotor maintains stable rotation during grinding. Specifically, the surface of the clamping wheel is provided with an elastic material layer to reduce pressure on the rotor surface and prevent damage.

[0011] The receiving plate is controlled to move laterally by a lateral movement cylinder, providing support when the lifting cylinder places the rotor into the grinding clamping part, ensuring the rotor's stability. The output end of the lateral movement cylinder is fixedly connected to the receiving plate by bolts. The upper surface of the receiving plate has a positioning groove, the shape of which matches the rotor's shape to ensure that the rotor does not shift during placement. Furthermore, the stroke range of the lateral movement cylinder is set according to the distance between the receiving plate and the grinding clamping part, ensuring that the receiving plate can accurately extend or retract when needed.

[0012] The translation module is mounted on the machine base, and its output end is connected to the grinding motor, used to adjust the position of the grinding motor according to the rotor size. The slide rail of the translation module adopts a high-rigidity linear guide to ensure the stability of the grinding motor during movement. In particular, the drive mechanism of the translation module is a synchronous belt drive structure driven by a stepper motor, which can achieve precise displacement control. A grinding wheel is fixed to the end of the output shaft of the grinding motor. The surface of the grinding wheel is coated with a hard alloy to improve wear resistance and service life.

[0013] The cutting fluid protection device includes a longitudinal ejector cylinder and a baffle. The longitudinal ejector cylinder is fixedly mounted on the machine base, and its output end is fixedly connected to the baffle by bolts. The shape of the baffle matches the space between the clamping cylinder and the grinding clamping part, ensuring effective blocking of cutting fluid splashing during grinding. Furthermore, the surface of the baffle is provided with a corrosion-resistant coating to extend its service life.

[0014] The discharge sheet metal part is located below the grinding clamping part and is used to receive the polished rotor and guide it to the discharge area. The tilt angle of the discharge sheet metal part is optimized to ensure that the rotor can smoothly slide into the discharge area under gravity. In particular, the surface of the discharge sheet metal part is coated with a wear-resistant coating to reduce wear on the sheet metal part during the rotor's slide.

[0015] The workflow of this utility model is as follows:

[0016] S1 Rotor Conveying: The rotor is conveyed to the rotor stop by a vibratory feeder, waiting to be grabbed;

[0017] S2 Rotor clamping and transfer: The lifting cylinder controls the clamping cylinder to move downward to the rotor stop to clamp the rotor. After clamping, the lifting cylinder resets. The first linear module drives the lifting cylinder to move the rotor to the rounding clamping part. The lifting cylinder controls the clamping cylinder to move downward again, release the rotor, and place it between the driving wheel and the driven wheel.

[0018] S3 Rotor clamping and grinding: The transverse cylinder controls the extension of the receiving plate to provide support for the rotor. The downward cylinder moves to the grinding clamping part through the first linear module and controls the pressing wheel to move downward to press the rotor between the driving wheel and the driven wheel. The control shaft drive motor drives the driving wheel to rotate, which in turn drives the rotor to rotate. The translation module adjusts the position of the grinding motor according to the rotor size. The grinding motor starts and the grinding wheel grinds the permanent magnet of the rotor.

[0019] S4 Cutting fluid protection: During the grinding process, the water pipe delivers cutting fluid to the grinding wheel, and at the same time, the longitudinal ejection cylinder controls the baffle to be ejected to prevent cutting fluid from splashing into the clamping cylinder.

[0020] S5 Rotor Discharge: After grinding, the pressing cylinder controls the clamping wheel to move upward and reset. The rotor falls to the discharge sheet metal part under the action of gravity, completing the discharge.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] The coordinated operation of the driving wheel, driven wheel, and clamping wheel ensures stable rotor rotation during grinding, achieving high-precision machining of the permanent magnet's outer diameter. The entire process, from rotor feeding, clamping, grinding to unloading, is automated, significantly improving production efficiency. The translation module adjusts the grinding motor position to accommodate rotors of different sizes, meeting the processing needs of various rotor specifications. Baffles and receiving plates effectively prevent cutting fluid splashing and rotor instability, extending equipment lifespan and improving processing reliability.

[0023] In summary, this utility model provides a compact and fully functional rotor outer diameter tolerance processing device that can effectively solve the problems existing in the prior art and has significant industrial application value. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a side view of the conveying and clamping mechanism of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of this utility model, ignoring the vibratory feeder.

[0027] Attached image annotations:

[0028] 1. Vibratory feeder; 2. Rotor stop; 3. Clamping cylinder; 4. Baffle; 5. Pressing cylinder; 6. Grinding wheel; 7. First linear module; 8. Water pipe; 9. Translation module; 10. Discharge sheet metal part; 11. Lifting cylinder; 12. Pressing wheel; 13. Grinding motor; 14. Longitudinal ejection cylinder; 15. Receiving plate; 16. Lateral movement cylinder; 17. Driving wheel; 19. Driven wheel. Detailed Implementation

[0029] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings:

[0033] A rotor outer diameter tolerance processing device, the structure and operating principle of which are described in the attached document. Figure 1 To be continued Figure 3 The detailed descriptions of each component are clearly presented. The equipment mainly consists of a vibratory feeder 1, a first linear module 2, a clamping cylinder 3, a grinding motor 5, a translation module 9, a discharge sheet metal part 10, a baffle 11, a receiving plate 12, a driving wheel 13, a driven wheel 14, a downward pressing cylinder 15, a clamping wheel 16, a longitudinal ejection cylinder 17, a transverse movement cylinder 18, and a lifting cylinder 19, etc. The technical solution of this equipment will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] As attached Figure 1As shown, the vibratory feeder 1 is installed on one side of the machine base to arrange and transport the rotors to the rotor stop in a predetermined order. The vibration frequency and amplitude of the vibratory feeder 1 are precisely adjusted to accommodate rotors of different specifications. The discharge end of the vibratory feeder 1 is closely matched with the rotor stop position to ensure that the rotors remain stable and orderly arranged during the conveying process. When the rotor is conveyed to the rotor stop by the vibratory feeder 1, the lifting cylinder 19 controls the clamping cylinder 3 to move downward to the rotor stop to complete the gripping action. The clamping end of the clamping cylinder 3 is equipped with flexible claws, and the inner surface of the flexible claws has anti-slip textures to enhance the clamping force on the rotor and prevent surface damage. After clamping, the lifting cylinder 19 drives the clamping cylinder 3 to reset, and then the first linear module 2 drives the lifting cylinder 19 to move laterally to the rounding clamping part. The lifting cylinder 19 again controls the clamping cylinder 3 to move downward, and the clamping cylinder 3 releases the rotor and places it between the driving wheel 13 and the driven wheel 14. To ensure the stability of the rotor during placement, the transverse cylinder 18 controls the extension of the receiving plate 12. The positioning groove on the receiving plate 12 matches the shape of the rotor, thereby achieving precise support.

[0035] As attached Figure 2 As shown, the grinding and clamping section is the core of the entire equipment, including a control shaft drive motor, a drive wheel 13, a driven wheel 14, and a clamping wheel 16. The control shaft drive motor is fixedly mounted on the machine base, and its output shaft is directly connected to the drive wheel 13. The drive wheel 13 and the driven wheel 14 are arranged with a gap for clamping the rotor. The driven wheel 14 is rotatably connected to the machine base through bearings, ensuring that the driven wheel 14 can rotate synchronously with the drive wheel 13. When the pressing cylinder 15 moves to the grinding and clamping section through the first linear module 2, the pressing cylinder 15 controls the clamping wheel 16 to move downward, pressing the rotor between the drive wheel 13 and the driven wheel 14. The surface of the clamping wheel 16 is covered with an elastic material layer to reduce the pressure on the rotor surface and avoid damage. At this time, the control shaft drive motor starts, driving the drive wheel 13 to rotate, causing the rotor to rotate stably.

[0036] At the same time, the translation module 9 adjusts the position of the grinding motor 5 according to the rotor size. (See attached image) Figure 3As shown, the slide rail of the translation module 9 adopts a high-rigidity linear guide rail to ensure that the grinding motor 5 maintains high precision and stability during movement. The drive mechanism of the translation module 9 is a synchronous belt drive structure driven by a stepper motor, which can achieve precise displacement control. A grinding wheel 6 is fixed to the end of the output shaft of the grinding motor 5. The surface of the grinding wheel 6 is coated with a hard alloy coating to improve wear resistance and service life. After the grinding motor 5 is started, the grinding wheel 6 grinds the permanent magnet of the rotor to eliminate the outer diameter error. The water pipe 4 delivers cutting fluid to the grinding wheel 6 to reduce the heat generated during grinding and wash away the chips. The cutting fluid protection device plays an important role in this process. The longitudinal ejection cylinder 17 controls the baffle 11 to be ejected. The baffle 11 is arranged between the clamping cylinder 3 and the grinding clamping part to prevent cutting fluid from splashing into the clamping cylinder 3.

[0037] After grinding, the downward pressure cylinder 15 controls the clamping roller 16 to move upward and reset. Once the rotor loses its clamping force, it falls to the discharge sheet metal part 10 under gravity. The discharge sheet metal part 10 is tilted to ensure the rotor can smoothly slide into the discharge area. The surface of the discharge sheet metal part 10 is coated with a wear-resistant coating to reduce wear caused by the rotor during its descent. This completes a full rotor outer diameter tolerance processing procedure.

[0038] In the actual application scenario of this equipment, assuming a batch of rotors needs to be processed, the outer diameter of their permanent magnets needs to be controlled within ±0.02mm. First, the operator places the rotors to be processed into the vibratory feeder 1, which transports the rotors one by one to the rotor stop for gripping. After the lifting cylinder 19 controls the clamping cylinder 3 to complete the gripping, the first linear module 2 transfers the rotor to the grinding and clamping part. The receiving plate 12 extends to provide support, and the pressing cylinder 15 controls the pressing wheel 16 to press the rotor between the driving wheel 13 and the driven wheel 14. The control shaft drive motor drives the driving wheel 13 to rotate, causing the rotor to rotate stably. The translation module 9 adjusts the position of the grinding motor 5 according to the rotor size, and the grinding wheel 6 grinds the permanent magnets of the rotor. During the grinding process, the water pipe 4 continuously delivers cutting fluid, and the longitudinal ejection cylinder 17 controls the baffle 11 to eject, preventing cutting fluid from splashing. After grinding, the pressing cylinder 15 controls the clamping roller 16 to reset, and the rotor falls to the discharge sheet metal part 10 to complete the discharge. After inspection, the outer diameter tolerance of the processed rotor meets the requirements, indicating that the equipment has high processing accuracy and reliability.

[0039] This invention integrates vibration feeding, automatic clamping, precision grinding, and unloading functions to achieve efficient and precise machining of the outer diameter of rotor permanent magnets. The equipment has a compact overall structure and comprehensive functions, suitable for batch processing of rotors of various specifications. Through the rational design of the structure and movement of each component, it solves the problem of automating the handling of rotor outer diameter errors in existing technologies, significantly improving production efficiency and machining accuracy. Furthermore, the equipment has excellent protective measures, effectively extending its service life and improving machining reliability, making it of significant industrial application value.

[0040] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rotor outer diameter tolerance processing device, characterized in that: The machine includes a vibratory feeder (1), a first linear module (2), a lifting cylinder (19), a clamping cylinder (3), a grinding clamping part, a receiving plate (12), a transverse cylinder (18), a translation module (9), a grinding motor (5), a cutting fluid protection device, and a discharge sheet metal part (10), wherein: Vibratory feeder (1) is used to arrange the rotors in a predetermined order and transport them to the rotor stops; The first linear module (2) is installed on the machine base, and its output end is connected to the lifting cylinder (19) to drive the lifting cylinder (19) to move laterally; The output end of the lifting cylinder (19) is connected to the clamping cylinder (3), which is used to clamp the rotor and move it from the rotor stop to the rounding clamping part; The grinding clamping part includes a control shaft drive motor, a drive wheel (13), a driven wheel (14) and a clamping wheel (16). The control shaft drive motor is fixedly mounted on the machine base, and its output shaft is fixedly connected to the drive wheel (13). The driven wheel (14) is rotatably connected to the machine base through a bearing. The clamping wheel (16) is controlled by a pressing cylinder (15) to press the rotor between the drive wheel (13) and the driven wheel (14). The receiving plate (12) is controlled to move laterally by the transverse cylinder (18) to provide support for the rotor; The translation module (9) is installed on the machine base, and its output end is connected to the grinding motor (5) for adjusting the position of the grinding motor (5) according to the rotor size; The cutting fluid protection device includes a longitudinal ejector cylinder (17) and a baffle (11). The longitudinal ejector cylinder (17) is fixedly installed on the machine base, and its output end is connected to the baffle (11). The discharge sheet metal part (10) is located below the grinding clamping part and is used to receive the rotor after grinding and guide it to slide down.

2. The rotor outer diameter tolerance processing equipment as described in claim 1, characterized in that: The vibration frequency and amplitude of the vibratory plate (1) can be adjusted according to the rotor specifications.

3. The rotor outer diameter tolerance processing equipment as described in claim 2, characterized in that: The discharge end of the vibratory feeder (1) is matched with the position of the rotor stop to ensure that the rotor remains stable and orderly during the conveying process.

4. The rotor outer diameter tolerance processing equipment as described in claim 1, characterized in that: The driving mechanism of the first linear module (2) is a ball screw structure driven by a servo motor, and its slide rail adopts a high-precision linear guide.

5. The rotor outer diameter tolerance processing equipment as described in claim 1, characterized in that: The clamping end of the clamping cylinder (3) is provided with a flexible gripper, and the inner surface of the flexible gripper is provided with anti-slip texture.

6. The rotor outer diameter tolerance processing equipment as described in claim 1, characterized in that: The driving mechanism of the translation module (9) is a synchronous belt drive structure driven by a stepper motor, and its slide rail adopts a high-rigidity linear guide.

7. The rotor outer diameter tolerance processing equipment as described in claim 1, characterized in that: The tilt angle of the sheet metal part (10) is optimized and its surface is coated with a wear-resistant coating.

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