An automatic device applied to uniform adjustment of air gap of micro motor

Abstract

The application belongs to the field of air gap adjustment, and provides an automatic equipment applied to air gap uniform adjustment of micro-motor, comprising: a rack, which is provided with a feeding mechanism, the feeding mechanism is used for grabbing and transferring the micro-motor to be detected into the rack; a plurality of correction mechanisms, which are annularly and equidistantly distributed at the top end of the rack, each correction mechanism is provided with a pressing head, the pressing head is movably abutted to a shell, and the bearing can drive the rotor to move relative to the stator when the shell is plastically deformed in the radial direction thereof. Compared with the prior art, the application has the advantages that the current-air gap change data measured by the eight point detectors are used, the pressing degree of the pressing head to the plastic deformation of the shell is continuously adjusted, the uniformity of the air gap in the circumferential direction of the rotor and the stator is effectively ensured, and the automatic design of the discharging further makes the whole detection and adjustment process not to be manually intervened, the production efficiency is improved, and the accurate adjustment of the air gap of the micro-motor is ensured.

Description

Technical Field

[0001] This invention belongs to the field of air gap adjustment, specifically relating to an automated device for uniform air gap adjustment of micro motors. Background Technology

[0002] Traditional methods for adjusting the air gap uniformity of micro motors mainly rely on manual operation, which includes manual assembly and adjustment by tapping the micro motor housing.

[0003] In the traditional process, to ensure a secure fit between the bearing outer ring and the stator, the bearing outer ring is typically coated with adhesive. During this process, a series of operations, including but not limited to assembly, inspection, and necessary adjustments, must be completed before the adhesive has fully cured. This increases the complexity of the process, and because the adhesive needs to maintain a certain level of tack before curing for adjustment, the entire process becomes difficult to control precisely. Especially in large-scale production environments, this process, reliant on manual experience and skill, limits the potential for automation and efficiency improvements on the production line.

[0004] Adjusting the micro-motor by tapping its casing is not only inefficient, with each adjustment taking anywhere from 30 seconds to a minute, but for some parts, it can even take more than a minute for a worker to complete the adjustment. Furthermore, this method is highly dependent on the worker's individual experience and skill level, resulting in a pass rate of only about 85%, which is far from sufficient for modern manufacturing that demands high precision and consistency. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by the present invention is to propose an automated device for uniform air gap adjustment of micro motors that has a simple overall structure, requires no manual intervention, has a high degree of automation, and ensures air gap uniformity.

[0006] The technical solution adopted by the present invention to solve its technical problem is to propose an automated device for uniform adjustment of the air gap of a micro motor. The micro motor is composed of a housing, a stator, a rotor, a rotating shaft, and a bearing that connects the rotating shaft and cooperates with the housing. The device includes a frame on which a feeding mechanism is configured to pick up the micro motor to be tested and transfer it into the frame.

[0007] Several straightening mechanisms are distributed in a ring at equal intervals at the top of the frame. Each straightening mechanism is equipped with a pressing head, which is movably pressed against the housing. When the housing undergoes plastic deformation in its radial direction, the bearing can drive the rotor to move relative to the stator to adjust the air gap between the rotor and the stator in the circumferential direction.

[0008] The machine includes a lifting mechanism and a unloading mechanism. The lifting mechanism is vertically arranged inside the frame and is used to receive the motor in the loading mechanism and lift the motor between several straightening mechanisms. The unloading mechanism is arranged on the frame and is used to grab the housing and rotate it outside the lifting mechanism.

[0009] When several of the extrusion heads approach each other and pre-press the housing, the rotor can drive the shaft to rotate after the micro motor is powered on to generate centrifugal force. This force is then detected by an external detector to adjust the degree of pressure of the extrusion heads on the housing, so that the air gap between the rotor and the stator in the circumferential direction is evenly distributed.

[0010] In the aforementioned automated device for uniformly adjusting the air gap of a micro-motor, each of the aforementioned correction mechanisms further includes:

[0011] A corrective cylinder is provided, wherein the frame has a detection hole for the micro motor to pass through, the corrective cylinder is located at the circumference of the detection hole, and a telescopic shaft is connected to the drive end of the corrective cylinder.

[0012] An assembly block having an integrally formed connecting part and an extension part, wherein the connecting part has a locking hole and the telescopic shaft has an oblong hole along its axial direction, the locking hole being aligned with and connected to the oblong hole when the connecting part is movably sleeved on the telescopic shaft, so as to allow fasteners to limit the relative position between the connecting part and the telescopic shaft; the extrusion head is connected to the extension part and together they form an avoidance groove, such that the axis of the extrusion head is parallel to the axis of the telescopic shaft;

[0013] A laser sensor is mounted on the frame and is used to detect the length of the rotating shaft.

[0014] In the aforementioned automated equipment for uniformly adjusting the air gap of a micro motor, the end of the extrusion head is hemispherical.

[0015] In the aforementioned automated device for uniformly adjusting the air gap of a micro-motor, the lifting mechanism includes:

[0016] A lifting cylinder and a guide rail are installed inside the frame. The output end of the lifting cylinder is connected to a lifting plate. A guide block is movably engaged on the guide rail. The lifting plate is detachably connected to the guide block.

[0017] A pneumatic finger is mounted on the lifting plate. The driving end of the pneumatic finger is symmetrically connected to a clamping block. A V-shaped locking slope is formed on two adjacent clamping blocks.

[0018] A bracket is connected to the pneumatic finger and extends below the clamping block. The bracket is provided with a positioning block and positive and negative copper plates distributed on both sides thereon. The positive and negative copper plates are used to connect to the terminals of the micro motor, respectively.

[0019] In the aforementioned automated equipment for uniformly adjusting the air gap of a micro-motor, both the feeding mechanism and the unloading mechanism include:

[0020] A drive unit, one end of which extends outside the frame and the other end is located on one side of the pneumatic finger;

[0021] The clamping component has a movable end connected to a first moving block and a second moving block that can move closer to or further away from each other.

[0022] A traction member is disposed on the clamping member, and a gripper is movably disposed on the traction member. The gripper is connected to both the first moving block and the second moving block. The traction member allows the gripper to rotate relative to the first moving block or the second moving block when the first moving block and the second moving block move away from each other.

[0023] In the aforementioned automated equipment for uniformly adjusting the air gap of a micro-motor, the feeding mechanism further includes:

[0024] A mounting block is connected inside the frame, and a rack is provided on the mounting block. The length direction of the rack is parallel to the driving direction of the driving component.

[0025] A rotating platform is connected to the clamping member. The bottom wall of the rotating platform is provided with a connecting shaft, and the top wall is fixedly connected with a gear. A fixed plate is provided on the driving member. The rotating shafts on the connecting shaft and the gear are movably connected to the fixed plate, and the gear is movably meshed with the rack.

[0026] In the aforementioned automated device for uniform adjustment of the air gap of a micro motor, the traction component further includes a rotating shaft and an elastic component. Limiting blocks are formed on both the first moving block and the second moving block. An arc-shaped groove is formed in the limiting block, and the rotating shaft connecting the gripper is movably disposed in the arc-shaped groove. One end of the elastic component is connected to the clamping component, and at least one gripper is connected to the other end of the elastic component.

[0027] The technical solution adopted by this invention to solve its technical problem is to also propose an automated device for uniform adjustment of the air gap of a micro motor. The micro motor consists of a housing, a stator, a rotor, a rotating shaft, and a bearing connecting the rotating shaft and cooperating with the housing. The device includes:

[0028] frame;

[0029] A feeding mechanism is provided on the frame, and the feeding mechanism is used to grab and transfer the micro motor to be tested into the frame;

[0030] A stamping mechanism is movably mounted on the frame. A stamping head is mounted on the stamping mechanism. Several adjusting blocks are distributed in a ring at equal intervals on the inner wall of the stamping head. When the stamping head is movably mounted on the housing, the several adjusting blocks can jointly squeeze the housing to produce plastic deformation along its circumferential direction.

[0031] When the stamping mechanism approaches the feeding mechanism, the bearing can drive the rotor to move relative to the stator due to the plastic deformation of the housing, so that the air gap between the rotor and the stator in the circumferential direction is evenly distributed.

[0032] In the aforementioned automated device for uniformly adjusting the air gap of a micro motor, the length direction of each adjustment block is parallel to the axis of the rotating shaft, and each adjustment block is in line contact with the outer wall of the housing.

[0033] In the aforementioned automated equipment for uniformly adjusting the air gap of a micro-motor, the feeding mechanism includes:

[0034] A linear guide rail is mounted on the frame and extends outside the frame, and a movable plate is connected to the output end of the linear guide rail;

[0035] A plurality of grippers are provided on the movable plate, and the plurality of grippers are distributed in a ring at equal intervals on the mounting base for gripping the micro motor to be tested;

[0036] A vibrator is disposed on the outer wall of the chuck, and the vibrator can generate high-frequency low-frequency vibration when the chuck clamps the housing.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] (1) The present invention provides an automated device for uniform adjustment of air gap in micro motors. It utilizes an external detector and eight points to measure the current-air gap change data. By continuously adjusting the pressure of the extrusion head on the plastic deformation of the shell, it effectively ensures the uniformity of the air gap in the circumferential direction of the rotor and stator. In addition, the automated design of the feeding process makes the entire detection and adjustment process free from manual intervention, which improves production efficiency and ensures the precise adjustment of the air gap in micro motors.

[0039] (2) The present invention provides an automated equipment for uniform adjustment of air gap in micro motors. During the process of fitting the housing with a stamping head, the uniformity of air gap between the rotor and stator can be adjusted at one time through several adjusting blocks. The whole process is convenient and quick to operate, and there is no need for frequent correction and testing, which greatly ensures the automation level and efficiency of the production line.

[0040] (3) By using gears and racks to rotate the rotary table, the gripper can directly grab the micro motor after the pneumatic finger has completed the inspection and transfer it to the outside. This effectively avoids the frequent lifting and lowering of the lifting cylinder to avoid the unloading operation of the micro motor, saves the overall production cycle time, and improves the working efficiency of the production line.

[0041] (4) The elastic element is used to make the first moving block and the second moving block pull the gripper to rotate around the rotation axis when they move away from each other. This allows the gripper to release the micro motor to be tested while directly avoiding the operation of lifting the micro motor on the support. This ensures that the reset of the drive component and the lifting operation of the lifting cylinder do not interfere with each other, thus ensuring the smoothness and stability of the entire production line operation. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1;

[0043] Figure 2 This is a schematic diagram of the micro motor.

[0044] Figure 3 This is a schematic diagram of the installation structure of the correction mechanism when testing the micro motor;

[0045] Figure 4 This is a schematic diagram of the overall structure of the correction mechanism;

[0046] Figure 5 This is an overall structural view of the lifting mechanism;

[0047] Figure 6 This is an overall structural view of the feeding mechanism;

[0048] Figure 7 This is a structural diagram of the feeding mechanism and the frame;

[0049] Figure 8 This is a schematic diagram of the overall structure of Embodiment 2;

[0050] Figure 9 This is a schematic diagram of the structure of the adjusting block inside the stamping head.

[0051] In the diagram, 1 is the micro motor; 10 is the housing; 100 is the annular protrusion; 11 is the stator; 12 is the rotor; 13 is the shaft; 14 is the bearing; and 15 is the terminal block.

[0052] 2. Frame; 20. Inspection hole; 21. Support frame; 210. Locking seat; 22. Guide column;

[0053] 3. Feeding mechanism; 30. Driving component; 31. Clamping component; 310. First moving block; 311. Second moving block; 312. Limiting block; 312a. Arc groove; 32. Traction component; 320. Gripper; 320a. Locking tooth; 321. Rotating shaft; 322. Elastic component;

[0054] 4. Correction mechanism; 40. Extrusion head; 41. Correction cylinder; 410. Telescopic shaft; 410a. Waist-shaped hole; 42. Assembly block; 420. Connecting part; 420a. Locking hole; 421. Extension part; 421a. Avoidance groove; 43. Laser sensor;

[0055] 5. Lifting mechanism; 50. Lifting cylinder; 51. Guide rail; 52. Lifting plate; 53. Guide block; 54. Pneumatic finger; 55. Clamping block; 550. Locking ramp; 56. Bracket; 560. Positioning block; 561. Positive copper sheet; 562. Negative copper sheet;

[0056] 6. Feeding mechanism; 60. Mounting block; 61. Rack; 62. Rotary table; 63. Gear; 64. Fixing plate;

[0057] 7. Stamping mechanism; 70. Stamping head; 71. Adjusting block; 72. Electric press; 720. Stamping plate; 720a. Guide hole;

[0058] 8. Feeding mechanism; 80. Linear guide rail; 81. Moving plate; 810. Mounting base; 82. Chuck; 83. Vibrator. Detailed Implementation

[0059] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0060] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0061] Example 1:

[0062] like Figures 1 to 7As shown, this invention discloses an automated device for uniformly adjusting the air gap of a micro motor 1. The micro motor 1 consists of a housing 10, a stator 11, a rotor 12, a shaft 13, and a bearing 14 connecting the shaft 13 and cooperating with the housing 10. The device includes: a frame 2, on which a feeding mechanism 3 is mounted, used to grab and transfer the micro motor 1 to be tested into the frame 2; and several straightening mechanisms 4, arranged in a ring at equal intervals at the top of the frame 2. Each straightening mechanism 4 is equipped with a pressing head 40, which movably abuts against the housing 10. The bearing 14 can drive the rotor 12 to move relative to the stator 11 when the housing 10 undergoes plastic deformation in its radial direction, thereby adjusting the air gap. The air gap between the rotor 12 and the stator 11 in the circumferential direction is reduced; a lifting mechanism 5 and a feeding mechanism 6 are provided. The lifting mechanism 5 is set vertically inside the frame 2 and is used to support the motor in the feeding mechanism 3 and lift the motor between several straightening mechanisms 4. The feeding mechanism 6 is set on the frame 2 and is used to grab the housing 10 and rotate it outside the lifting mechanism 5. When several extrusion heads 40 approach each other and pre-press the housing 10, the rotor 12 can drive the rotating shaft 13 to rotate after the micro motor 1 is powered on to generate centrifugal force. This force is used by an external detector to detect and adjust the degree of pressing of the corresponding extrusion head 40 on the housing 10, so that the air gap between the rotor 12 and the stator 11 in the circumferential direction is evenly distributed.

[0063] Specifically, the micro motor 1 to be tested in this embodiment mainly consists of a housing 10, a stator 11, a rotor 12, a shaft 13, a bearing 14, and a bottom terminal block 15. (Refer to...) Figure 2 The rotating shaft 13 is connected to the rotor 12 and extends into the housing 10. An annular protrusion 100 is formed on the housing 10 for assembling the bearing 14 (which is connected to the rotating shaft 13). Due to manufacturing errors in the housing 10, the bearing 14 is eccentric relative to the annular protrusion 100, resulting in an eccentric arrangement of the rotating shaft 13 and the rotor 12 relative to the stator 11. This causes uneven air gap distribution in the micro-motor 1. To solve this technical problem, this embodiment has several correction mechanisms 4 arranged in an annular pattern at equal intervals at the top of the frame 2, such as... Figures 1 to 4As shown, each correction mechanism 4 is equipped with a pressing head 40. When the micro motor 1 to be tested reaches the center position of several correction mechanisms 4 after a series of movements, the position of the micro motor 1 is precisely fixed. As these pressing heads 40 move towards each other, they finally press against the annular protrusion 100 to achieve the initial pre-pressing operation, which ensures the smoothness and stability of the motor during the power-on process. It is worth noting that a detector for detecting the current of the micro motor 1 is always connected to the outside of the device. By monitoring the current changes generated in real time, the device automatically calculates whether the current air gap is uniform according to the preset air gap and current relationship model. That is to say, if the current does not reach the expected standard value, the correction mechanism 4 at any position can drive the pressing head 40 to apply plastic deformation to the annular protrusion 100 in the radial direction. This deformation will force the bearing 14 (driving the rotating shaft 13 and rotor 12 connected to it) to move slightly, thereby driving the rotor 12 to make fine adjustments relative to the stator 11 until the current value meets the required requirements, thus satisfying the requirement of air gap uniformity of the micro motor 1. It can be seen that by generating different degrees of plastic deformation on the annular protrusions 100 based on several extrusion heads 40, the uniformity of the air gap can be precisely controlled, which greatly improves the product qualification rate and performance consistency, and reduces product quality fluctuations caused by differences in manual operation. At the same time, with the cooperation between the feeding mechanism 3, the lifting mechanism 5 and the unloading mechanism 6, the entire air gap adjustment process of the micro motor 1 is automated, and no manual operation intervention is required throughout the process, which significantly improves production speed and efficiency.

[0064] It should be noted that, in this embodiment, the air gap of the micromotor 1 refers to the physical gap between the stator 11 and the rotor 12 in the motor. The size of the air gap has a significant impact on the performance and reliability of the motor. The smaller the air gap, the lower the magnetic reluctance of the magnetic field passing through the air gap, and more magnetic flux can pass through the air gap smoothly, thereby improving the magnetic flux and efficiency of the motor. Conversely, an excessively large air gap will lead to increased magnetic reluctance, reduced magnetic flux, and decreased motor performance. In addition, plastic deformation is a type of deformation that cannot be self-recovered. Therefore, after the annular protrusion 100 undergoes plastic deformation, it can ensure that the uniformity of the air gap between the rotor 12 and the stator 11 is maintained with a certain accuracy and stability.

[0065] Each straightening mechanism 4 further includes: a straightening cylinder 41; a detection hole 20 for the micro motor 1 to pass through is provided on the frame 2; the straightening cylinder 41 is located at the circumference of the detection hole 20; and a telescopic shaft 410 is connected to the drive end of the straightening cylinder 41; an assembly block 42 having an integrally formed connecting part 420 and an extension part 421; a locking hole 420a is provided on the connecting part 420; and an oblong hole 410a is provided along the axial direction of the telescopic shaft 410. The locking hole 420a can... When the connecting part 420 is movably sleeved on the telescopic shaft 410, it is aligned with and connected to the waist-shaped hole 410a, so that the fastener can limit the relative position between the connecting part 420 and the telescopic shaft 410; the extrusion head 40 is connected to the extension part 421, and together they form an avoidance groove 421a, so that the axis of the extrusion head 40 is parallel to the axis of the telescopic shaft 410; the laser sensor 43 is mounted on the frame 2, and the laser sensor 43 is used to detect the length dimension of the rotating shaft 13.

[0066] Furthermore, such as Figure 3 and Figure 4 As shown, when the lifting cylinder 50 lifts the micromotor 1 to be tested and fixes it at the center position of several straightening mechanisms 4, several straightening cylinders 41 synchronously drive the corresponding telescopic shafts 410 to extend, eventually approaching and slowly pressing against the outer wall of the annular protrusion 100. This pre-pressing method effectively avoids damage caused by the extrusion head 40 directly plastically deforming the annular protrusion 100, while also ensuring the smoothness and stability of the micromotor 1 during energized operation; while the extrusion head 40 presses against the annular protrusion 100, the extrusion... The clearance groove 421a formed by the extrusion head 40 and the extension 421 makes the axis of the extrusion head 40 parallel to the axis of the telescopic shaft 410 (i.e., the extrusion head 40 is eccentrically positioned relative to the extension 421). As a result, the clearance groove 421a ensures that the extrusion head 40 is stably pressed against the annular protrusion 100, while also preventing collision damage caused by positional interference between the extrusion head 40 and the chamfer (or rounded corner) at the top of the annular protrusion 100. This provides a guarantee for the smoothness and stability of the uniform adjustment process of the air gap of the micro motor 1.

[0067] More preferably, this embodiment also provides a waist-shaped hole 410a on the telescopic shaft 410, allowing the locking hole 420a to be fixed in the relative position between the connecting part 420 and the telescopic shaft 410 by fasteners when aligned. This ensures precise control of the position and pressure of the extrusion head 40. It is precisely by utilizing this adjustable combination that the position of the extrusion head 40 can be quickly and flexibly adjusted to adapt to different specifications of micro-motors 1, increasing the versatility and production efficiency of the equipment. It also avoids the telescopic shaft 410 from affecting the overall production cycle time due to excessive idle travel. It should be noted that the fasteners in this embodiment can be replaced by bolts, screws, or other connecting parts.

[0068] More preferably, such as Figure 1 As shown, in this embodiment, a support frame 21 is also installed on the frame 2. A locking seat 210 located directly above the center of several orthopedic cylinders is connected to the end of the support frame 21. The laser sensor 43 is detachably connected to the locking seat 210 in the vertical direction. By introducing the laser sensor 43 for accurate measurement, not only is human error reduced, but also the length of the rotating shaft 13 and the position of the entire micro motor 1 are detected through integration with the control system. This greatly reduces the difficulty of operation and improves the reliability and stability of the entire production line.

[0069] Preferably, such as Figure 4 As shown, the end of the extrusion head 40 in this embodiment is hemispherical. When pressure is applied to the annular protrusion 100, the hemisphere gradually extends from point contact to surface contact with the annular protrusion 100. This helps to reduce the overall pressure on the housing 10 and ensures that the annular protrusion 100 can undergo local plastic deformation in the radial direction, avoiding unnecessary overall deformation or damage to other components. This not only protects the product but also extends the service life of the equipment.

[0070] The lifting mechanism 5 includes: a lifting cylinder 50 and a guide rail 51, which are installed inside the frame 2. The output end of the lifting cylinder 50 is connected to a lifting plate 52. A guide block 53 is movably engaged on the guide rail 51. The lifting plate 52 is detachably connected to the guide block 53. A pneumatic finger 54 is installed on the lifting plate 52. The drive end of the pneumatic finger 54 is symmetrically connected to a clamping block 55. A V-shaped locking slope 550 is formed on two adjacent clamping blocks 55. A bracket 56 is connected to the pneumatic finger 54 and extends to the bottom of the clamping block 55. The bracket 56 is provided with a positioning block 560 and positive copper plates 561 and negative copper plates 562 distributed on both sides of it. The positive copper plates 561 and negative copper plates 562 are used to connect to the terminals 15 of the micro motor 1, respectively.

[0071] Furthermore, such as Figure 1 , Figure 2 , Figure 3 as well as Figure 5As shown, when the micro motor 1 is moved by the feeding mechanism 3 to the symmetrically arranged clamping blocks 55, the pneumatic fingers 54 can drive the clamping blocks 55 to clamp and fix the housing 10 of the micro motor 1. During this process, the V-shaped locking ramp 550 on the clamping blocks 55 clamps the housing 10, providing a firm and reliable fixing method to prevent the micro motor 1 from sliding or falling off during lifting and correction, thus increasing operational safety. As the lifting cylinder 50 is activated, its output end pushes the lifting plate 52 up along the guide rail 51. The guide block 53 on the guide rail 51 ensures that the lifting plate 52 moves smoothly and accurately to the designated position, allowing the micro motor 1 to accurately enter the working range of the correction mechanism 4. It is precisely because of the design cooperation between the guide rail 51 and the guide block 53 that the stability and smoothness of the lifting plate 52 during lifting and lowering are guaranteed, avoiding any unnecessary shaking or deviation, ensuring that the micro motor 1 can accurately reach the predetermined position, and improving the accuracy of the entire operation. Preferably, in this embodiment, the clamping block 55 can be detachably connected to the pneumatic finger 54 through screws, bolts and other connecting parts 420, ensuring that the clamping block 55 can be disassembled and replaced in a timely manner when wear or damage occurs, thus extending the service life of the device.

[0072] It is worth noting that in this embodiment, the positive copper sheet 561 and the negative copper sheet 562 are directly mounted on the bracket 56. When the feeding mechanism 3 places the micro motor 1 to be tested on the bracket 56, the positioning block 560 between the positive copper sheet 561 and the negative copper sheet 562 can effectively place the two terminals 15 on the micro motor 1 on both sides of the positioning block 560, ensuring that each copper sheet can be connected to a terminal 15 of the micro motor 1, thus realizing the alignment operation of the micro motor 1. During the lifting process, the positioning block 560 on the bracket 56 and the positive copper sheet 561 and the negative copper sheet 562 on both sides also move together, ensuring that the micro motor 1 can quickly establish an electrical connection after completing the pre-pressure, so as to carry out subsequent current monitoring. The overall structure simplifies the electrical connection steps, reduces manual intervention, and improves the reliability and efficiency of the electrical connection.

[0073] Both the loading mechanism 3 and the unloading mechanism 6 include: a driving member 30, one end of which extends outside the frame 2 and the other end is located on one side of the pneumatic finger 54; a clamping member 31, the movable end of which is connected to a first moving block 310 and a second moving block 311 that can move closer or further apart; and a traction member 32, which is disposed on the clamping member 31. A gripper 320 is movably disposed on the traction member 32. Both the first moving block 310 and the second moving block 311 are connected to grippers 320. The traction member 32 allows the grippers 320 to rotate relative to the first moving block 310 or the second moving block 311 when the first moving block 310 and the second moving block 311 move further apart.

[0074] Furthermore, such as Figure 1 , Figure 6 and Figure 7 As shown, the loading / unloading of the micro motor 1 in this embodiment has certain similarities. Specifically, when the micro motor 1 to be tested is placed at a designated position outside the frame 2, the drive unit 30 starts and drives the clamping unit 31 to move outside the frame 2. As the first moving block 310 and the second moving block 311 gradually approach each other under the driving action of the clamping unit 31 (which can be hydraulically driven or pneumatically driven), the action of the gripper 320 can be controlled by using the first moving block 310 and the second moving block 311 that can approach or move away from each other, so as to achieve precise gripping and release of the micro motor 1 (in the loading mechanism 3, the gripper 320 can preferably be used to grip and fix the rotating shaft 13 of the micro motor 1, so that the housing 10 on the micro motor 1 can be directly placed between the clamping blocks 55, so as to receive and complete the clamping and fixing of the housing 10). This design improves the stability and accuracy of gripping and reduces the risk of product damage due to misoperation. When the drive unit 30 starts again, the micro motor 1 can be transferred to the clamping blocks 55. Similarly, the entire gripping and fixing operation of the unloading mechanism 6 and the loading mechanism 3 in this embodiment is the same, and will not be described in detail here. It can be seen that the entire loading and unloading process is fully automated, reducing the need for manual intervention, helping to ensure consistent product quality, improving work efficiency, and reducing labor costs. Preferably, because the gripper 320 can be flexibly adjusted in multiple directions, the device can adapt to different specifications and types of micro-motors 1, meeting diverse production needs without frequent replacement or adjustment of numerous components.

[0075] More preferably, as the micro-motor 1 to be tested is placed between the clamping blocks 55 and firmly clamped, the clamping member 31 can then drive the first moving block 310 and the second moving block 311 to move away from each other. During this process, because the gripper 320 is restricted by the traction member 32, the gripper 320 cannot move synchronously with the moving blocks in the opening direction. Instead, under the pull of the traction member 32, the gripper 320 rotates relative to the moving block it is connected to (see reference). Figure 6(The direction of rotation indicated by the arrow) means that the gripper 320 and the moving block are set at an angle at this time. This ensures that when the gripper 320 releases the micro motor 1, it can immediately return the moving block and gripper 320 to the outside of the frame 2 to await the next gripping operation without waiting for the lifting cylinder 50 to perform a misalignment operation on the support 56. The entire operation is seamlessly connected, reducing the waiting time of the lifting mechanism 5, saving the overall work cycle time, ensuring the smooth operation of the equipment, and improving the overall production efficiency. Preferably, the driving component 30 in this embodiment can be a linear guide rail, a slider and slide rail combination, or a ball screw drive structure for environments with high precision requirements. Of course, the driving method is not limited to those mentioned in this embodiment, and other driving devices can also be used instead.

[0076] In a further preferred embodiment, continuous locking teeth 320a are provided on the inner side of the gripper 320. The presence of locking teeth 320a provides additional safety for the micro motor 1 and significantly increases the friction between the gripper 320 and the surface of the micro motor 1. During the entire loading, conveying and unloading process, it not only improves the stability of gripping, but also reduces the risk of the micro motor 1 slipping due to vibration or rapid movement, protecting the product from potential damage.

[0077] The traction member 32 also includes a rotating shaft 321 and an elastic member 322. Limiting blocks 312 are formed on both the first moving block 310 and the second moving block 311. An arc-shaped groove 312a is formed in the limiting block 312. The rotating shaft 321 connecting the gripper 320 is movably disposed in the arc-shaped groove 312a. One end of the elastic member 322 is connected to the clamping member 31, and at least one gripper 320 is connected to the other end of the elastic member 322.

[0078] like Figure 6 As shown, in this embodiment, the rotation of the gripper 320 relative to the moving block is mainly achieved by the rotating shaft 321 and the elastic element 322. Specifically, as the micro motor 1 to be tested is clamped and fixed by the clamping block 55, the clamping element 31 can drive the first moving block 310 and the second moving block 311 to move away from each other. During this process, the gripper 320, which originally needed to open together with the moving block, cannot continue to move linearly in the opening direction due to the pulling force of the elastic element 322. Instead, under the tensioning force of the elastic element 322, the gripper 320 rotates around the axis of the rotating shaft 321 toward the limiting block 312 (see reference). Figure 6 The arrow indicates the direction of rotation of the gripper 320. It should be noted that when the gripper 320 is in... Figure 6In the clamping position shown, the elastic element 322 is inclinedly connected to the opposite position of the gripper 320 on the clamping member 31. As the gripper 320 opens towards the moving block, it is inevitably forced to rotate under the elastic contraction force of the elastic element 322 (the gripper 320 still moves with the moving block during its rotation relative to it). This ultimately results in a misalignment between the gripper 320 and the micro-motor 1 clamped by the clamping block 55. With the drive operation of the drive element 30, the moving block and gripper 320 can be quickly reset. This also makes the gripper 320's gripping, rotating, and releasing processes smoother and more stable, reducing the downtime of the feeding mechanism 3 and improving overall production efficiency.

[0079] Preferably, such as Figure 6 As shown, in this embodiment, a limiting block 312 is also formed on each moving block. This limiting block 312, on the one hand, uses the formed arc-shaped groove 312a to restrict the radial displacement of the rotating shaft 321, ensuring that the gripper 320 always rotates relative to the moving block around the axis of the rotating shaft 321, thus improving the smoothness and stability of the gripper 320 during avoidance operations; on the other hand, it also limits the radial displacement of the gripper 320 along... Figure 6 The arrow direction, relative to the rotation angle of the moving block, serves as a limiting effect, ensuring that during the process of the first moving block 310 and the second moving block 311 approaching each other again, the gripper 320 can quickly return to its original position under the elastic reset action of the elastic element 322. Figure 6 The clamping position shown ensures the accuracy of the gripper 320 in clamping the micro motor 1, effectively preventing the gripper 320 from shifting its position due to a long reset stroke, or even causing collision damage between the gripper 320 and the micro motor 1.

[0080] More preferably, in this embodiment, both the feeding mechanism 3 and the unloading mechanism 6 are provided with at least one elastic element 322 connected to the gripper 320 on the moving block, and the gripper 320 should be a component located on the side of the clamping member 31 away from the outside of the frame 2 (i.e., Figure 6 The gripper 320 on the second moving block 311 shown in the diagram and Figure 7 The gripper 320 on the second moving block 311 shown in the figure can achieve the same loading / unloading reset under the drive of the drive member 30 after the aforementioned gripper 320 rotates, without the other gripper 320 needing to rotate. This effectively saves the use of the elastic member 322, reduces the manufacturing cost of the equipment and the maintenance cost of subsequent parts.

[0081] The unloading mechanism 6 also includes: a mounting block 60 connected inside the frame 2, on which a rack 61 is provided, the length direction of which is parallel to the driving direction of the drive member 30; a rotary table 62 connected to the clamping member 31, the bottom wall of which is provided with a connecting shaft (not shown in the figure), the top wall of which is fixedly connected with a gear 63, the drive member 30 is provided with a fixing plate 64, the rotating shafts on the connecting shaft and the gear 63 are movably connected to the fixing plate 64, and the gear 63 is movably meshed with the rack 61.

[0082] Furthermore, such as Figure 7 As shown, the only difference between the unloading mechanism 6 and the loading mechanism 3 in this embodiment is that the unloading mechanism 6 also includes a rotary table 62 capable of rotational movement. After the air gap of the micro motor 1 is adjusted to a uniform distribution, the lifting cylinder 50 can lower the micro motor 1 to the end of the unloading mechanism 6. As the clamping block 55 releases and clamps the micro motor 1, the driving component 30 on the unloading mechanism 6 can drive the clamping component 31 to move. The difference is that, since a rack 61 is fixedly installed at the bottom of the frame 2, when the driving component 30 moves forward, the gear 63 engages with the rack 61, allowing the connecting shaft and rotating shaft on the fixed plate 64 to allow the rotary table 62 to rotate. Therefore, the driving component 30 moves forward along the length direction of the rack 61. During the forward or backward movement, gear 63 rotates, which in turn drives the rotary table 62 and the clamping member 31 connected to it to rotate. This design allows the clamping member 31 to rotate horizontally without changing the linear motion of the drive member 30, greatly enhancing the flexibility of operation. This allows the micro motor 1 to be easily rotated out of the clamping block 55 and smoothly transferred to the next process or collection area. As a result, the clamping member 31 can perform multi-angle operations in a limited space, which greatly improves the space utilization of the equipment. This is especially important in compact production lines, as it enables the equipment to complete complex handling tasks in a small space and reduces the need for additional space.

[0083] Example 2:

[0084] like Figures 8 to 9As shown, this second embodiment is a replacement for the method of uniformly adjusting the air gap of the motor in the first embodiment. Specifically, this second embodiment proposes an automated device for uniformly adjusting the air gap of a micro motor 1. The micro motor 1 consists of a housing 10, a stator 11, a rotor 12, a rotating shaft 13, and a bearing 14 that connects the rotating shaft 13 and cooperates with the housing 10. The device includes: a frame 2; a feeding mechanism 8, which is set on the frame 2 and is used to grab and transfer the micro motor 1 to be tested into the frame 2; and a stamping machine. The mechanism 7 is movably mounted on the frame 2. The stamping mechanism 7 is equipped with a stamping head 70. The inner wall of the stamping head 70 has several adjusting blocks 71 distributed in a ring at equal intervals. When the stamping head 70 is movably mounted on the housing 10, the several adjusting blocks 71 can jointly squeeze the housing 10 to produce plastic deformation along its circumferential direction. When the stamping mechanism 7 is close to the feeding mechanism 8, the bearing 14 can drive the rotor 12 to move relative to the stator 11 due to the plastic deformation of the housing 10, so that the air gap between the rotor 12 and the stator 11 is evenly distributed in the circumferential direction.

[0085] It should be noted that in this second embodiment, the positions of several adjusting blocks 71 within the stamping head 70 correspond to the standard value required for the extrusion head 40 to plastically deform the annular protrusion 100 (the structure of the micro-motor 1 is the same as in the first embodiment, and will not be described in detail here) in the first embodiment. That is, when the feeding mechanism 8 moves the micro-motor 1 to be tested to below the stamping head 70, the stamping mechanism 7 adjusts to a suitable position as needed (this can be achieved through sensors or other positioning devices to ensure that the stamping head 70 is accurately aligned with the housing 10 of the micro-motor 1 and to prepare for the subsequent plastic deformation). Once everything is ready, the stamping mechanism 7 begins to move downwards, causing the stamping head 70 to be movably fitted onto the annular protrusion. On part 100, simultaneously, multiple adjusting blocks 71 apply pressure to the outer wall of the annular protrusion 100, causing the annular protrusion 100 to undergo slight plastic deformation in the circumferential direction. As the annular protrusion 100 undergoes plastic deformation, the internal bearing 14 also undergoes slight displacement, thereby driving the rotor 12 to move relative to the stator 11. Ultimately, this optimizes the air gap distribution between the rotor 12 and the stator 11, making it more uniform. Throughout the process, the system monitors the current changes of the micro-motor 1 rotor 12 in real time and determines whether the current air gap has reached the ideal state based on the preset air gap and current mathematical model. Once the air gap uniformity adjustment is completed, the stamping mechanism 7 is raised and returned to its original position. Figure 8The initial state shown, compared to the adjustment method in Embodiment 1, requires only one pressing operation of the stamping head 70 on the annular protrusion 100 to achieve the required air gap adjustment, simplifying the entire air gap adjustment process, significantly shortening the adjustment time of each micro-motor 1, and ensuring the consistency and stability of product performance. Preferably, the adjustment block 71 and the stamping head 70 in this embodiment are integrally formed, so during the manufacturing process, adjustment blocks 71 of different sizes and specifications can be manufactured according to actual processing requirements to ensure that the stamping head 70 can quickly and accurately adjust the uniformity of the air gap of the micro-motor 1 through the corresponding adjustment block 71 in one pressing operation. In addition, the stamping mechanism 7 in this Embodiment 2 is mainly a detachable installation between the electric press 72 and the stamping head 70, which, while realizing the above-mentioned stamping operation, also provides great convenience for the disassembly and replacement of the stamping head 70 (including the adjustment block 71).

[0086] Preferably, the length direction of each adjusting block 71 is parallel to the line direction of the rotating shaft 321, and each adjusting block 71 is in line contact with the outer wall of the housing 10. As the stamping head 70 is movably sleeved on the annular protrusion 100, each adjusting block 71, while moving along the axial direction of the annular protrusion 100, also applies plastic deformation to the circumferential direction of the annular protrusion 100. The line contact design can achieve more precise local plastic deformation when pressure is applied, reducing the risk of damage to the housing 10 or other internal components due to excessive compression. While ensuring the accuracy of air gap adjustment and improving product quality consistency, it also protects the product from damage and extends the service life of the equipment.

[0087] The feeding mechanism 8 includes: a linear guide rail 80, which is mounted on the frame 2 and extends outside the frame 2, and the output end of the linear guide rail 80 is connected to a movable plate 81; a plurality of chucks 82, on which a mounting base 810 is provided, and the plurality of chucks 82 are distributed in a ring at equal intervals on the mounting base 810 for clamping the micro motor 1 to be tested; and a vibrator 83, which is mounted on the outer wall of the chucks 82, and the vibrator 83 can generate high-frequency low vibration when the chucks 82 clamp the housing 10.

[0088] More preferably, the feeding mechanism 8 in this embodiment 2 is also a simplified replacement of the loading mechanism 3 in embodiment 1. When several chucks 82 are in the open state, the external robotic arm (not shown in the figure) can place the micro motor 1 to be tested between several chucks 82. As the chucks 82 clamp and fix the micro motor 1, it can be moved to the bottom of the stamping head 70 by the linear guide rail 80. This embodiment 2 uses a design in which multiple chucks 82 are distributed in a ring at equal intervals, which can provide a uniform pressure distribution and ensure that the micro motor 1 will not slip or fall off during the conveying process. In addition, if there is still unevenness after the stamping head 70 and the adjusting block 71 adjust the air gap of the micro motor 1 (by observing the current value on the external detector), the high-frequency low vibration of the vibrator 83 can be used to further adjust the micro motor 1 in the clamped state, so that the rotor 12 inside it produces a slight offset, thereby ensuring that the air gap of the micro motor 1 is uniformly distributed.

[0089] Preferably, in this second embodiment, the unloading operation of the micro motor 1 after air gap adjustment can also be achieved using the unloading mechanism 6 in the first embodiment. Figure 8 (Not shown in the image, but its working principle is the same and will not be described again here). Of course, in this embodiment, the unloading operation can also be achieved by a robotic arm. In order to further improve the accuracy of the electric press 72 driving the stamping head 70 to press the annular protrusion 100, a guide post 22 can be fixedly set on the frame 2, and a guide hole 720a is set on the stamping plate 720 connected to the electric press. The guide post 22 is movably inserted into the guide hole 720a (see reference). Figure 8 As shown in the figure, this ensures the accuracy and stability of the annular protrusion 100 when the stamping head 70 is movably fitted with it.

[0090] It should be noted that the elastic element 322 in this embodiment can be replaced by other elastic devices such as compression springs and return springs.

[0091] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0092] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0093] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An automated device for uniformly adjusting the air gap of a micro motor, wherein the micro motor comprises a housing, a stator, a rotor, a shaft, and a bearing connecting the shaft and cooperating with the housing, characterized in that, The device includes: A frame on which a feeding mechanism is configured to pick up and transfer the micro motor to be tested into the frame; Several straightening mechanisms are distributed in a ring at equal intervals at the top of the frame. Each straightening mechanism is equipped with a pressing head, which is movably pressed against the housing. When the housing undergoes plastic deformation in its radial direction, the bearing can drive the rotor to move relative to the stator to adjust the air gap between the rotor and the stator in the circumferential direction. The machine includes a lifting mechanism and a unloading mechanism. The lifting mechanism is vertically arranged inside the frame and is used to receive the motor in the loading mechanism and lift the motor between several straightening mechanisms. The unloading mechanism is arranged on the frame and is used to grab the housing and rotate it outside the lifting mechanism. When several of the extrusion heads approach each other and pre-press the housing, the rotor can drive the shaft to rotate after the micro motor is powered on to generate centrifugal force. This force is then detected by an external detector to adjust the degree of pressure of the extrusion heads on the housing, so that the air gap between the rotor and the stator in the circumferential direction is evenly distributed.

2. The automated device for uniform adjustment of the air gap of a micro motor according to claim 1, characterized in that, Each of the aforementioned corrective mechanisms also includes: A corrective cylinder is provided, wherein the frame has a detection hole for the micro motor to pass through, the corrective cylinder is located at the circumference of the detection hole, and a telescopic shaft is connected to the drive end of the corrective cylinder. An assembly block having an integrally formed connecting part and an extension part, wherein the connecting part has a locking hole and the telescopic shaft has an oblong hole along its axial direction, the locking hole being aligned with and connected to the oblong hole when the connecting part is movably sleeved on the telescopic shaft, so as to allow fasteners to limit the relative position between the connecting part and the telescopic shaft; the extrusion head is connected to the extension part and together they form an avoidance groove, such that the axis of the extrusion head is parallel to the axis of the telescopic shaft; A laser sensor is mounted on the frame and is used to detect the length of the rotating shaft.

3. The automated device for uniform adjustment of the air gap of a micro motor according to claim 1, characterized in that, The end of the extrusion head is hemispherical.

4. The automated device for uniform adjustment of the air gap of a micro motor according to claim 2, characterized in that, The lifting mechanism includes: A lifting cylinder and a guide rail are installed inside the frame. The output end of the lifting cylinder is connected to a lifting plate. A guide block is movably engaged on the guide rail. The lifting plate is detachably connected to the guide block. A pneumatic finger is mounted on the lifting plate. The driving end of the pneumatic finger is symmetrically connected to a clamping block. A V-shaped locking slope is formed on two adjacent clamping blocks. A bracket is connected to the pneumatic finger and extends below the clamping block. The bracket is provided with a positioning block and positive and negative copper plates distributed on both sides thereon. The positive and negative copper plates are used to connect to the terminals of the micro motor, respectively.

5. An automated device for uniform adjustment of the air gap of a micro motor according to claim 4, characterized in that, Both the feeding mechanism and the unloading mechanism include: A drive unit, one end of which extends outside the frame and the other end is located on one side of the pneumatic finger; The clamping component has a movable end connected to a first moving block and a second moving block that can move closer to or further away from each other. A traction member is disposed on the clamping member, and a gripper is movably disposed on the traction member. The gripper is connected to both the first moving block and the second moving block. The traction member allows the gripper to rotate relative to the first moving block or the second moving block when the first moving block and the second moving block move away from each other.

6. An automated device for uniform adjustment of the air gap of a micro motor according to claim 5, characterized in that, The feeding mechanism also includes: A mounting block is connected inside the frame, and a rack is provided on the mounting block. The length direction of the rack is parallel to the driving direction of the driving component. A rotating platform is connected to the clamping member. The bottom wall of the rotating platform is provided with a connecting shaft, and the top wall is fixedly connected with a gear. A fixed plate is provided on the driving member. The rotating shafts on the connecting shaft and the gear are movably connected to the fixed plate, and the gear is movably meshed with the rack.

7. An automated device for uniform adjustment of the air gap of a micro-motor according to claim 5, characterized in that, The traction component further includes a rotating shaft and an elastic component. Limiting blocks are formed on both the first moving block and the second moving block. An arc-shaped groove is formed in the limiting block, and the rotating shaft connecting the gripper is movably disposed in the arc-shaped groove. One end of the elastic component is connected to the clamping component, and at least one gripper is connected to the other end of the elastic component.

8. An automated device for uniformly adjusting the air gap of a micro motor, wherein the micro motor comprises a housing, a stator, a rotor, a shaft, and a bearing connecting the shaft and cooperating with the housing, characterized in that, The device includes: frame; A feeding mechanism is provided on the frame, and the feeding mechanism is used to grab and transfer the micro motor to be tested into the frame; A stamping mechanism is movably mounted on the frame. A stamping head is mounted on the stamping mechanism. Several adjusting blocks are distributed in a ring at equal intervals on the inner wall of the stamping head. When the stamping head is movably mounted on the housing, the several adjusting blocks can jointly squeeze the housing to produce plastic deformation along its circumferential direction. When the stamping mechanism approaches the feeding mechanism, the bearing can drive the rotor to move relative to the stator due to the plastic deformation of the housing, so that the air gap between the rotor and the stator in the circumferential direction is evenly distributed.

9. An automated device for uniform adjustment of the air gap of a micro motor according to claim 8, characterized in that, The length direction of each adjustment block is parallel to the axis of the rotating shaft, and each adjustment block is in line contact with the outer wall of the housing.

10. An automated device for uniform adjustment of the air gap of a micro motor according to claim 8, characterized in that, The feeding mechanism includes: A linear guide rail is mounted on the frame and extends outside the frame, and a movable plate is connected to the output end of the linear guide rail; A plurality of grippers are provided on the movable plate, and the plurality of grippers are distributed in a ring at equal intervals on the mounting base for gripping the micro motor to be tested; A vibrator is disposed on the outer wall of the chuck, and the vibrator can generate high-frequency low-frequency vibration when the chuck clamps the housing.

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