A device with micro motor air gap adjustment and hydraulic clamping shaping functions

Abstract

The utility model belongs to the technical field of micro motor provides a kind of equipment with micro motor air gap adjustment and hydraulic chucking plastic function, comprising: rack, configured with conveying mechanism, conveying mechanism is used to grasp and remove the micro motor of external to be detected to rack;Feeding mechanism is set on rack, and feeding mechanism includes the clamping assembly of several groups of annular equidistant distribution, each group of clamping assembly is equipped with clamping seat.Compared with prior art, the utility model has the advantages that centrifugal force is generated by micro motor self-rotation, dynamic excitation is applied to shell by combining knocking mechanism, air gap uniformity is fed back in real time by current change, closed-loop control of synchronous detection and adjustment is realized, radial pressure is applied to micro motor bearing seat by cooperating hydraulic chuck, plastic deformation occurs, bearing outer ring is firmly clamped, additional glue coating process is not needed in the whole process, process flow is simplified, and micro motor running stability is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of micro motor technology, specifically relating to a device that combines micro motor air gap adjustment and hydraulic clamping and shaping functions. 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 housing by manually tapping it is not only inefficient, with each adjustment taking anywhere from 30 seconds to 1 minute, but for some parts, it can even take more than 1 minute to complete. Furthermore, this method is highly dependent on the worker's personal 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. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a device that combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, which is simple in structure, has good stability, improves work efficiency, and ensures product quality.

[0006] The objective of this utility model can be achieved by addressing the following technical problem: a device that combines micro-motor air gap adjustment and hydraulic clamping / shaping functions is proposed. The micro-motor comprises a housing, a stator, a rotor, a rotating shaft, and a bearing connecting the rotating shaft and cooperating with the housing. The device includes:

[0007] The frame is equipped with a conveying mechanism, which is used to grab and transfer the micro motor to be tested from the outside into the frame;

[0008] A feeding mechanism is provided on the frame. The feeding mechanism includes several sets of clamping components distributed in a ring at equal intervals. Each set of clamping components is equipped with a clamping seat. The micro motor to be tested can be fixed by the clamping components, so that the wiring terminal at the bottom of the micro motor is in close contact with the copper sheet in the clamping seat.

[0009] The housing includes a clamping mechanism and at least two sets of striking mechanisms. The clamping mechanism includes a hydraulic chuck movable above the feeding mechanism. The micro motor is provided with a bearing seat for bearing installation. The hydraulic chuck is movably clamped to the outer wall of the bearing seat, forcing the bearing seat to be tightly wrapped around the outer ring of the bearing due to plastic deformation. The striking mechanisms are symmetrically distributed on both sides of the housing in the radial direction. Each set of striking mechanisms includes a striking swing arm for moving and striking the outer wall of the housing.

[0010] When the terminal block is in close contact with the copper sheet and energized, the rotor drives the shaft to rotate to generate centrifugal force. When the striking arm strikes the housing, the current magnitude changes, so that the air gap in the circumferential direction of the rotor and the stator is evenly distributed. The plastic deformation of the bearing seat restricts the movement of the bearing and its connected shaft relative to the housing.

[0011] In the aforementioned device that combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, the feeding mechanism further includes a cam divider and a rotating disk. The cam divider is mounted on the frame, and the rotating disk is connected to the output shaft of the cam divider. Several sets of clamping components are distributed in a ring at equal intervals on the rotating disk.

[0012] In the aforementioned device that combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, an elastic element is also installed between the copper sheet and the clamping seat.

[0013] In the aforementioned device that combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, each set of clamping components further includes:

[0014] A base is provided on the rotating disk;

[0015] A contour block and a mounting block are spaced apart on the base. The mounting block and the contour block together form a mounting cavity, and the clamping seat is located inside the mounting cavity.

[0016] A locking cylinder is mounted on the mounting block. The output end of the locking cylinder is connected to a clamping block. The clamping block can move closer to or further away from the contour block to fix the micro motor on the clamping seat.

[0017] The limiting blocks and fastening gaskets are symmetrically arranged on the mounting block and form a guide cavity. The clamping block extends movably into the guide cavity. The fastening gaskets are installed on the inner walls of both the clamping block and the contour block, and the fastening gaskets are in close contact with the outer wall of the housing.

[0018] In the aforementioned device that combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, the rotating disk is also equipped with a main shaft and an electric slip ring. The main shaft is connected to the center position of the rotating disk through a fixed seat; the electric slip ring is connected to the main shaft.

[0019] In the aforementioned device that combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, the striking mechanism further includes:

[0020] A bracket is mounted on the frame, and a drive motor is installed on the bracket;

[0021] A rotating shaft is movably connected to the bracket, and the end of the striking swing arm is connected to the rotating shaft;

[0022] A crank and a connecting rod, one end of the crank being connected to the output end of the drive motor and the other end being connected to the connecting rod; the end of the connecting rod away from the crank being connected to the striking pendulum, so as to drive the striking pendulum to swing back and forth around the axis of rotation.

[0023] In the aforementioned device that combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, the conveying mechanism includes:

[0024] Mounting rack;

[0025] A horizontal telescopic cylinder and a vertical telescopic cylinder are provided. The output end of the horizontal telescopic cylinder is connected to a movable plate. The vertical telescopic cylinder is mounted on the movable plate and a clamping cylinder is connected to the output end of the vertical telescopic cylinder. The clamping cylinder is used to clamp or release the micro motor.

[0026] In the aforementioned device that combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, the clamping mechanism further includes:

[0027] A drive unit is mounted on the mounting frame, and the output end of the drive unit passes through the mounting frame and is connected to the hydraulic chuck.

[0028] A fixed guide sleeve is provided on the mounting bracket. The output end of the drive component is provided with a mounting plate for assembling the hydraulic chuck. A guide rod is provided on the mounting plate, and the guide rod is movably inserted into the fixed guide sleeve.

[0029] The aforementioned device, which combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, also includes:

[0030] A mounting bracket is provided on the frame;

[0031] A lifting rod and a return spring are installed inside the fixed frame. The lifting rod is used to move vertically and movably abut against the bottom wall of the rotating disk. One end of the return spring is connected to the lifting rod, and the other end is connected to the fixed frame.

[0032] A pusher cylinder is mounted on the fixed frame. The output end of the pusher cylinder is connected to a pusher block. When the pusher block moves in the horizontal direction, it is used to push the lifting rod to lift in the vertical direction.

[0033] In the aforementioned device that combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, a driving inclined surface is formed on the pusher block, and the driving inclined surface movably abuts against the bottom of the lifting rod.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] (1) This utility model provides a device that combines micro motor air gap adjustment and hydraulic clamping and shaping functions. It utilizes the centrifugal force generated by the self-rotation of the micro motor when it is powered on, and applies dynamic excitation to the shell by combining the striking mechanism. The air gap uniformity is fed back in real time through the change of current, realizing closed-loop control of synchronous detection and adjustment, which significantly improves the stability of micro motor operation. In addition, the hydraulic chuck applies radial pressure to the micro motor bearing seat, causing it to undergo plastic deformation and firmly clamp the outer ring of the bearing. The whole process does not require additional glue treatment, which simplifies the process flow and greatly improves the stability of micro motor operation.

[0036] (2) When the micro motor is transferred to the clamping seat, the design of the elastic element enables the terminal and the copper sheet to achieve buffering and adaptive fit, avoiding damage to the terminal or poor contact caused by rigid contact.

[0037] (3) This solution uses a crank-connecting rod mechanism to achieve regular knocking on the outer wall of the micro motor housing. The entire transmission structure is simple and reliable, with fast response speed and controllable impact force. It can accurately control the knocking frequency and amplitude, avoiding excessive impact that could damage the motor. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of this application;

[0039] Figure 2 This is a schematic diagram of the micro motor.

[0040] Figure 3 This is a schematic diagram of the installation structure of the material feeding mechanism;

[0041] Figure 4 This is a schematic diagram of the installation structure between the clamping assembly and the clamping base;

[0042] Figure 5 This is a schematic diagram of the installation structure of the conveying mechanism;

[0043] Figure 6 This is a schematic diagram of the structure of the clamping mechanism and the striking swing arm for adjusting the air gap and clamping and shaping the micro motor;

[0044] Figure 7 This is a schematic diagram of the installation structure of the striking mechanism;

[0045] Figure 8 This is a schematic diagram of the installation structure between the pusher cylinder, the lifting rod, and the rotating disc.

[0046] In the diagram, 1 is the micro motor; 10 is the housing; 100 is the bearing housing; 11 is the stator; 12 is the rotor; 13 is the shaft; 14 is the bearing; and 15 is the terminal block.

[0047] 2. Frame; 20. Conveying mechanism; 200. Mounting frame; 201. Horizontal telescopic cylinder; 202. Vertical telescopic cylinder; 203. Moving plate; 204. Clamping cylinder; 21. Digital display;

[0048] 3. Feeding mechanism; 30. Clamping assembly; 300. Clamping seat; 300a. Copper sheet; 300b. Elastic element; 301. Base; 302. Contouring block; 303. Mounting block; 304. Mounting cavity; 305. Locking cylinder; 306. Clamping block; 307. Limiting block; 308. Fastening gasket; 309. Guide cavity; 31. Cam divider; 32. Rotary disk; 320. Main shaft; 321. Fixed seat; 322. Electric slip ring;

[0049] 4. Clamping mechanism; 40. Hydraulic chuck; 41. Driving component; 42. Fixed guide sleeve; 43. Mounting plate; 44. Guide rod;

[0050] 5. Striking mechanism; 50. Striking rocker arm; 51. Bracket; 52. Drive motor; 53. Rotating shaft; 54. Crank; 55. Connecting rod;

[0051] 60. Fixed frame; 61. Lifting rod; 62. Pushing cylinder; 620. Pushing block; 620a. Driving inclined plane. Detailed Implementation

[0052] 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.

[0053] 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.

[0054] like Figures 1 to 8 As shown, this utility model provides a device that combines the functions of air gap adjustment of a micro motor 1 and hydraulic clamping and shaping. 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 3, a clamping mechanism 4, and at least two sets of striking mechanisms 5.

[0055] The frame 2 is equipped with a conveying mechanism 20, which is used to grab and transfer the micro motor 1 to be tested from the outside into the frame 2. The feeding mechanism 3 is set on the frame 2 and includes several sets of clamping components 30 distributed in a ring at equal intervals. Each set of clamping components 30 is equipped with a clamping seat 300. The micro motor 1 to be tested can be fixed by the clamping components 30, so that the wiring terminal 15 at the bottom of the micro motor 1 is in close contact with the copper sheet 300a in the clamping seat 300. The clamping mechanism 4 includes a hydraulic chuck 40 that moves above the feeding mechanism 3. The micro motor 1 is provided with a bearing seat 100 for the bearing 14 to be installed. The hydraulic chuck 40 can move to clamp the micro motor 1. The bearing housing 100 is tightly fitted to the outer wall of the bearing housing 100, forcing the bearing housing 100 to tightly wrap around the outer ring of the bearing 14 due to plastic deformation; the striking mechanism 5 is symmetrically distributed on both sides of the housing 10 in the radial direction, and each striking mechanism 5 includes a striking rocker arm 50 for moving and striking the outer wall of the housing 10; when the terminal 15 is in close contact with the copper sheet 300a and is energized, the rotor 12 drives the rotating shaft 13 to rotate to generate centrifugal force, which changes the current magnitude when the striking rocker arm 50 strikes the housing 10, so that the air gap between the rotor 12 and the stator 11 is evenly distributed in the circumferential direction, and the movement of the bearing 14 and its connected rotating shaft 13 relative to the housing 10 is restricted by the plastic deformation of the bearing housing 100.

[0056] Specifically, the micro motor 1 to be tested in this embodiment mainly consists of a housing 10, a stator 1111, 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. A bearing seat 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 bearing seat 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 micromotor 1. To solve this technical problem, this embodiment uses a conveying mechanism 20 to pick up the micromotor 1 to be tested from the external feeding area and precisely transfer the micromotor 1 to a specific station of the feeding mechanism 3 (i.e.,...). Figure 1In the rightmost clamping assembly 30 shown, during this process, because a (elastic conductive) copper sheet 300a is pre-embedded inside the clamping base 300, when the wiring terminal 15 at the bottom of the micro motor 1 is pressed into the clamping base 300 by the conveying mechanism 20, the copper sheet 300a (with wires connected to external devices on it, not shown in the figure) forms a stable contact with the wiring terminal 15, and the feeding mechanism 3 moves the micro motor 1 to be tested to... Figure 6 At the indicated position, the external power supply applies a starting voltage to the micro motor 1 through the copper sheet 300a, thereby enabling the rotor 12 to drive the shaft 13 to rotate and generate centrifugal force. At this time, if the air gap is uneven, the rotor 12 will tend to move eccentrically under the action of centrifugal force, resulting in electromagnetic load fluctuations, which are reflected as periodic changes in current. If the current displayed by the digital display 21 on the frame 2 exceeds the preset qualified value, the outer wall of the housing 10 can be struck by the periodic swing of the rocker arm 50. The slight vibration generated by the strike is transmitted to the internal structure, disturbing the relative position of the rotor 12 and stator 11, causing the eccentric rotor 12 to gradually adjust to the center position under the combined action of centrifugal force and electromagnetic force until the current fluctuation decreases and tends to stabilize, indicating that the air gap tends to be evenly distributed. After the air gap adjustment is completed, the micro motor 1 stops operating, and the hydraulic chuck 40 is driven by the clamping mechanism 4 along the... Figure 6 The device moves vertically downwards and precisely aligns with the outer wall of the bearing housing 100 of the micro motor 1. Driven by the hydraulic system, the hydraulic chuck 40 simultaneously clamps the outer wall of the bearing housing 100, forcing the bearing housing 100 to tightly wrap around the outer ring of the bearing 14 during plastic deformation. This, in turn, limits and fixes the adjusted shaft 13 and rotor 12. As can be seen, this device effectively eliminates the problem of uneven air gap caused by assembly through a closed-loop adjustment mechanism of "powering on + striking + current feedback," significantly reducing vibration, noise, and temperature rise during motor operation, and improving efficiency and lifespan. At the same time, the hydraulic plastic deformation technology is used to fasten the bearing 14 without the need for additional glue application, simplifying the process and effectively improving the stability of the micro motor 1 during operation.

[0057] It should be noted that the structure of the hydraulic chuck 40 in this embodiment is similar to that of a three-jaw chuck in a machine tool, and its clamping and releasing working principle is the same, which will not be described in detail here. Furthermore, air gap uniformity is a key indicator for evaluating the performance of the micromotor 1, and its magnitude is measured by the difference between the maximum and minimum air gaps within the same cross-section. The essence of air gap non-uniformity is the coaxiality error between the rotor 12 and the stator 11. When the axes of the rotor 12 and the stator 11 are offset, it will directly lead to uneven air gap distribution, thereby affecting the stability of motor operation. In actual production and assembly, air gap non-uniformity problems frequently occur due to factors such as machining accuracy (mechanical tolerances of stator 11 / rotor 12, etc.), assembly process (positioning deviation of rotor 12, etc.), and material properties (differences in thermal expansion coefficients, etc.). The size and uniformity of the air gap significantly affect the motor's performance and lifespan: an excessively small air gap can lead to rotor-stator rubbing, increased additional losses, and reduced efficiency; an excessively large air gap will increase magnetic reluctance and excitation current, decrease the power factor, and may also cause harmonic magnetic fields, stray losses, and noise; while an uneven air gap (industry standards require this deviation to be strictly controlled within 5%, otherwise it will significantly affect motor performance) will further cause low-frequency electromagnetic noise and abnormal vibration, and in severe cases, even lead to rotor rubbing failure, directly damaging the motor. Therefore, in the design and manufacturing process of the micromotor 1, it is necessary to seek the optimal balance among multiple objectives such as reducing excitation current, ensuring reliable operation, and controlling additional losses (this explains the principle of changing the current by striking the housing 10, which is common knowledge in this industry, belongs to existing technology, and will not be elaborated further).

[0058] The feeding mechanism 3 also includes a cam divider 31 and a rotating disk 32. The cam divider 31 is mounted on the frame 2, and the rotating disk 32 is connected to the output shaft of the cam divider 31. Several sets of clamping components 30 are distributed in a ring at equal intervals on the rotating disk 32.

[0059] like Figure 1 and Figure 3 As shown, when the conveying mechanism 20 accurately places the micro motor 1 to be tested into the... Figure 1 In the rightmost clamping seat 300 shown, the clamping component 30 automatically clamps the housing 10 of the micro motor 1. At the same time, its bottom wiring terminal 15 presses against the copper sheet 300a (connected with a wire harness) preset inside the clamping seat 300. After clamping is completed, the servo motor drives the cam divider 31 to move, thereby driving the rotating disk 32 along... Figure 3The cam divider rotates 90 degrees counterclockwise to the next workstation (directly below the hydraulic chuck 40). This structure allows the micro-motor 1 to synchronously and intermittently transfer between processes such as feeding, inspection, hammering adjustment, clamping and shaping, and unloading, improving the equipment's cycle time efficiency and automation level. Furthermore, the cam divider 31 has high positioning accuracy and repeatability, ensuring coordinated actions at each workstation. This provides a stable processing benchmark for subsequent hammering and hydraulic shaping, preventing processing failures or equipment damage due to positional deviations, and further guaranteeing the stability of the micro-motor 1's assembly quality.

[0060] Each clamping assembly 30 further includes: a base 301, disposed on the rotating disk 32; a contour block 302 and a mounting block 303, spaced apart on the base 301, the mounting block 303 and the contour block 302 together forming a mounting cavity 304, the clamping seat 300 located within the mounting cavity 304; a locking cylinder 305, disposed on the mounting block 303, the output end of the locking cylinder 305 connected to a clamping block 306, the clamping block 306 being able to... The micro motor 1 is fixed on the clamping seat 300 by moving closer to or further away from the contour block 302; the limiting block 307 and the fastening gasket 308 are symmetrically arranged on the mounting block 303 and a guide cavity 309 is formed therein, and the clamping block 306 extends movably into the guide cavity 309; the inner walls of the clamping block 306 and the contour block 302 are both equipped with fastening gaskets 308, and the fastening gaskets 308 are in close contact with the outer wall of the housing 10.

[0061] like Figures 1 to 4 As shown, before the conveying mechanism 20 places the micro motor 1 to be tested into the clamping seat 300, the locking cylinder 305 is in the retracted state, that is, the clamping block is away from the contour block 302. As the conveying mechanism 20 vertically places the micro motor 1 to be tested above the clamping seat 300 (the housing 10 of the micro motor 1 falls into the gap between the clamping block 306 and the contour block 302, and the wiring terminal 15 at the bottom of the micro motor 1 extends into the clamping seat 300 and abuts against the copper sheet 300a), the control system activates the locking cylinder 305. The piston rod pushes out, driving the clamping block 306 to move along the guide cavity 309 towards the contour block 302, and the limit stop block... The guide cavity 309 formed by 307 ensures that the clamping block 306 moves smoothly in a straight line, preventing deviation or jamming. As the clamping block 306 gradually approaches the contour block 302, the fastening pad 308 on its inner wall gradually adheres to the outer wall of the micro motor 1 housing 10. The fastening pad 308 can effectively protect the surface of the micro motor 1 housing 10 from damage, while improving the coaxiality and stability of the clamping. On the other hand, in the subsequent tapping correction stage, the housing 10 is subjected to periodic impacts from the tapping swing arm 50. The fastening pad 308 plays a buffering role, absorbing vibration energy and avoiding damage to the surface of the housing 10, making the clamping process safer and more reliable.

[0062] The rotating disk 32 is also provided with a main shaft 320 and an electric slip ring 322. The main shaft 320 is connected to the center of the rotating disk 32 via a fixed seat 321; the electric slip ring 322 is connected to the main shaft 320.

[0063] like Figure 3 As shown, in this embodiment, the electric slip ring 322 is mounted on the main shaft 320, enabling stable power transmission during the continuous rotation of the rotating disk 32. Specifically, the wire harness connected to the copper sheet 300a is introduced into the electric slip ring 322 through a slot (not shown in the figure) opened within the rotating disk 32. This avoids interference caused by wire harness entanglement and ensures that the micro motor 1 can continuously operate with external power when rotating to different positions, providing continuous power support for dynamic air gap adjustment. This structure and working principle are the same as those of the conductive slip ring 322 in the prior art, and will not be described in detail here.

[0064] Preferably, such as Figure 4 As shown, in this embodiment, an elastic element 300b is provided between the copper sheet 300a and the clamping seat 300. This allows the micromotor 1 to achieve buffering and adaptive contact during placement in the clamping seat 300, preventing damage or poor contact to the wiring terminals 15 caused by rigid contact. Simultaneously, the elastic element 300b can compensate for uneven contact pressure caused by dimensional tolerances or installation deviations of the micromotor 1, ensuring stable and reliable current transmission during energization. This provides a guarantee for the rotor 12 to generate stable centrifugal force under energized conditions, thereby improving the sensitivity and accuracy of air gap adjustment and enhancing the stability and safety of the detection and adjustment process. It should be noted that the elastic element 300b in this embodiment can be replaced by other elastic devices such as compression springs or return springs.

[0065] The conveying mechanism 20 includes: a mounting frame 200; a horizontal telescopic cylinder 201 and a vertical telescopic cylinder 202. The output end of the horizontal telescopic cylinder 201 is connected to a moving plate 203. The vertical telescopic cylinder 202 is mounted on the moving plate 203, and a clamping cylinder 204 is connected to the output end of the vertical telescopic cylinder 202. The clamping cylinder 204 is used to clamp or release the micro motor 1.

[0066] like Figure 1 and Figure 5As shown, the conveying mechanism 20 is driven by a combination of a horizontal telescopic cylinder 201 and a vertical telescopic cylinder 202, working in conjunction with a clamping cylinder 204 to achieve precise positioning and gripping actions in two-dimensional space. This allows for the flexible and automatic loading of the micro-motor 1 from the external feeding area to the clamping seat 300. The structure is stable, responsive, and highly accurate in positioning, effectively reducing the need for manual intervention and improving loading / unloading efficiency and overall automation. Preferably, this structure can be further enhanced by adding a position sensor or vision system to confirm the placement of the aligned micro-motor 1, significantly improving the automation level and operating efficiency of the production line. Furthermore, this embodiment also uses the same conveying mechanism 20 for unloading the micro-motor 1, and its working principle is the same, so it will not be described in detail here.

[0067] The striking mechanism 5 also includes: a bracket 51, mounted on the frame 2, on which a drive motor 52 is mounted; a rotating shaft 53, movably connected to the bracket 51, with the end of the striking rocker arm 50 connected to the rotating shaft 53; a crank 54 and a connecting rod 55, with one end of the crank 54 connected to the output end of the drive motor 52 and the other end connected to the connecting rod 55; and the end of the connecting rod 55 away from the crank 54 connected to the striking rocker arm 50, so as to drive the striking rocker arm 50 to swing back and forth around the axis of the rotating shaft 53.

[0068] like Figure 1 , Figure 6 as well as Figure 7 As shown, the striking mechanism 5 in this embodiment uses two sets, and the striking levers 50 of each set are distributed on both sides of the housing 10 (i.e., each striking lever 50 corresponds to half of the housing 10). After the rotor 12 in the middle of the micro motor 1 rotates, if the detected current exceeds the preset qualified value, a striking action can be performed, for example: Figure 6 If the current increases after the left-hand striking lever 50 strikes repeatedly, then the left-hand striking lever 50 will stop. Figure 6 The right-side striking lever 50 strikes (and vice versa) until the current reaches a qualified value, at which point the next operation (i.e., the hydraulic chuck 40 clamps and shapes the bearing seat 100) can proceed. To achieve the reciprocating striking action of the striking lever 50, this embodiment uses a drive motor 52 to drive a crank 54 and connecting rod 55 mechanism, driving the striking lever 50 to swing back and forth around the rotation axis 53, thus achieving regular striking of the outer wall of the micro-motor 1 housing 10. This transmission structure is simple and reliable, with a fast response speed and controllable impact force, enabling precise control of the striking frequency and amplitude, avoiding excessive impact that could damage the motor. Preferably, the two symmetrically arranged striking mechanisms 5 can apply force simultaneously from both sides of the housing 10, ensuring uniform force distribution on the housing 10 and promoting more effective position adjustment of the rotor 12 under the combined action of centrifugal force and vibration excitation, thereby optimizing the air gap distribution and improving adjustment efficiency and uniformity.

[0069] The clamping mechanism 4 also includes: a drive member 41, which is mounted on the mounting frame 200, and the output end of the drive member 41 passes through the mounting frame 200 and is connected to the hydraulic chuck 40; and a fixed guide sleeve 42, which is mounted on the mounting frame 200, and the output end of the drive member 41 is provided with a mounting plate 43 for assembling the hydraulic chuck 40, and a guide rod 44 is provided on the mounting plate 43, which is movably inserted into the fixed guide sleeve 42.

[0070] like Figure 1 , Figure 6 as well as Figure 7 As shown, when the current of the micro motor 1 reaches the qualified value due to the reciprocating striking action of the aforementioned striking lever 50, the micro motor 1 can stop its action. At this time, the driving component 41 drives the mounting plate 43, thereby driving the hydraulic chuck 40 along... Figure 6 Moving vertically downwards, as several grippers (not shown in the figure) within the hydraulic chuck 40 are distributed around the circumference of the bearing housing 100, the hydraulic chuck 40 applies radial pressure to the bearing housing 100 of the micro motor 1, causing it to undergo plastic deformation and firmly grip the outer ring of the bearing 14. This process replaces the traditional gluing process, effectively eliminating the coaxiality error between the stator 11 and the rotor 12, and improving the smoothness of the micro motor 1's operation. Furthermore, the mating structure of the fixed guide sleeve 42 and the guide rod 44 effectively constrains the movement trajectory of the mounting plate 43, preventing the hydraulic chuck 40 from swaying or shaking during lifting and lowering, ensuring that the clamping force is applied evenly along the axial direction, improving the coaxiality and stability of the hydraulic chuck 40's clamping, enhancing the safety and reliability of equipment operation, avoiding uneven force distribution or plastic deformation failure in the bearing housing 100 due to chuck eccentricity, and ensuring the consistency of plastic deformation quality.

[0071] This solution also includes: a fixed frame 60, mounted on the frame 2; a lifting rod 61 and a return spring, installed inside the fixed frame 60, the lifting rod 61 being used to move vertically and movably abut against the bottom wall of the rotating disk 32; one end of the return spring being connected to the lifting rod 61 and the other end being connected to the fixed frame 60; and a pushing cylinder 62, mounted on the fixed frame 60, the output end of the pushing cylinder 62 being connected to a pushing block 620, the pushing block 620 being used to push the lifting rod 61 to lift vertically when it moves horizontally.

[0072] like Figure 8 As shown, as the rotating disk 32 rotates the motor to be tested to... Figure 6 When the workstation is as shown, the pusher cylinder 62 can be activated, thereby converting the horizontal movement of the pusher block 620 into the vertical lifting action of the lifting rod 61. As the lifting rod 61 abuts against the bottom of the rotating disk 32 (the lifting rod 61 is correspondingly set at...), Figure 6Directly below the micro motor 1 shown, this design ensures smoothness and stability of both the striking and hydraulic shaping operations at this station, preventing mechanical vibration from affecting the air gap adjustment and the accuracy and stability of the bearing seat 100 during shaping. After the striking and hydraulic shaping operations are completed, the pusher cylinder 62 can drive the pusher block 620 to reset. At this time, the lifting rod 61 automatically returns to its original position (i.e., performs a lowering operation) under the action of the reset elasticity (not shown in the figure), so that the lifting rod 61 disengages from the rotating disk 32, making it easier for the rotating disk 32 to transfer the micro motor 1 to the next station for unloading. This design has a compact overall structure and reliable operation, ensuring smooth operation of the micro motor 1 during striking and clamping shaping, effectively preventing mechanical damage to the station on the rotating disk 32 corresponding to the hydraulic chuck 40 due to excessive force, and extending the service life of the rotating disk 32.

[0073] Preferably, such as Figure 8 As shown, in this embodiment, a driving inclined surface 620a is provided on the pusher block 620. When the pusher cylinder 62 pushes the pusher block 620 to move horizontally, the driving inclined surface 620a contacts the bottom of the lifting rod 61 and lifts it upward, realizing the conversion from horizontal movement to vertical movement. This inclined surface transmission structure is simple and transmits force smoothly. It can complete the lifting action without an additional power source, saving space and energy consumption. With the help of the reset spring, it reduces impact and noise, and improves the running stability and reliability of the structure.

[0074] It should be noted that the driving component 41 in this embodiment can be replaced by other driving methods such as hydraulic drive, electric drive, and pneumatic drive.

[0075] 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.

[0076] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If 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.

[0077] 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. A device that combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, 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: The frame is equipped with a conveying mechanism, which is used to grab and transfer the micro motor to be tested from the outside into the frame; A feeding mechanism is provided on the frame. The feeding mechanism includes several sets of clamping components distributed in a ring at equal intervals. Each set of clamping components is equipped with a clamping seat. The micro motor to be tested can be fixed by the clamping components, so that the wiring terminal at the bottom of the micro motor is in close contact with the copper sheet in the clamping seat. The housing includes a clamping mechanism and at least two sets of striking mechanisms. The clamping mechanism includes a hydraulic chuck movable above the feeding mechanism. The micro motor is provided with a bearing seat for bearing installation. The hydraulic chuck is movably clamped to the outer wall of the bearing seat, forcing the bearing seat to be tightly wrapped around the outer ring of the bearing due to plastic deformation. The striking mechanisms are symmetrically distributed on both sides of the housing in the radial direction. Each set of striking mechanisms includes a striking swing arm for moving and striking the outer wall of the housing. When the terminal block is in close contact with the copper sheet and energized, the rotor drives the shaft to rotate to generate centrifugal force. When the striking arm strikes the housing, the current magnitude changes, so that the air gap in the circumferential direction of the rotor and the stator is evenly distributed. The plastic deformation of the bearing seat restricts the movement of the bearing and its connected shaft relative to the housing.

2. The device according to claim 1, which combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, is characterized in that, The feeding mechanism also includes a cam divider and a rotating disk. The cam divider is mounted on the frame, and the rotating disk is connected to the output shaft of the cam divider. Several sets of clamping components are distributed in a ring at equal intervals on the rotating disk.

3. The device according to claim 1, which combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, is characterized in that... An elastic element is also installed between the copper sheet and the clamping base.

4. The device according to claim 2, which combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, is characterized in that, Each set of clamping components also includes: A base is provided on the rotating disk; A contour block and a mounting block are spaced apart on the base. The mounting block and the contour block together form a mounting cavity, and the clamping seat is located inside the mounting cavity. A locking cylinder is mounted on the mounting block. The output end of the locking cylinder is connected to a clamping block. The clamping block can move closer to or further away from the contour block to fix the micro motor on the clamping seat. The limiting blocks and fastening gaskets are symmetrically arranged on the mounting block and form a guide cavity. The clamping block extends movably into the guide cavity. The fastening gaskets are installed on the inner walls of both the clamping block and the contour block, and the fastening gaskets are in close contact with the outer wall of the housing.

5. The device according to claim 4, which combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, is characterized in that... The rotating disk is also equipped with a main shaft and an electric slip ring. The main shaft is connected to the center of the rotating disk via a fixed base; the electric slip ring is connected to the main shaft.

6. The device according to claim 1, which combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, is characterized in that, The striking mechanism also includes: A bracket is mounted on the frame, and a drive motor is installed on the bracket; A rotating shaft is movably connected to the bracket, and the end of the striking swing arm is connected to the rotating shaft; A crank and a connecting rod, one end of the crank being connected to the output end of the drive motor and the other end being connected to the connecting rod; the end of the connecting rod away from the crank being connected to the striking pendulum, so as to drive the striking pendulum to swing back and forth around the axis of rotation.

7. The device according to claim 1, which combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, is characterized in that, The conveying mechanism includes: Mounting rack; A horizontal telescopic cylinder and a vertical telescopic cylinder are provided. The output end of the horizontal telescopic cylinder is connected to a movable plate. The vertical telescopic cylinder is mounted on the movable plate and a clamping cylinder is connected to the output end of the vertical telescopic cylinder. The clamping cylinder is used to clamp or release the micro motor.

8. The device according to claim 7, which combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, is characterized in that, The clamping mechanism also includes: A drive unit is mounted on the mounting frame, and the output end of the drive unit passes through the mounting frame and is connected to the hydraulic chuck. A fixed guide sleeve is provided on the mounting bracket. The output end of the drive component is provided with a mounting plate for assembling the hydraulic chuck. A guide rod is provided on the mounting plate, and the guide rod is movably inserted into the fixed guide sleeve.

9. The device according to claim 2, which combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, is characterized in that, Also includes: A mounting bracket is provided on the frame; A lifting rod and a return spring are installed inside the fixed frame. The lifting rod is used to move vertically and movably abut against the bottom wall of the rotating disk. One end of the return spring is connected to the lifting rod, and the other end is connected to the fixed frame. A pusher cylinder is mounted on the fixed frame. The output end of the pusher cylinder is connected to a pusher block. When the pusher block moves in the horizontal direction, it is used to push the lifting rod to lift in the vertical direction.

10. The device according to claim 9, which combines micro-motor air gap adjustment and hydraulic clamping and shaping functions, is characterized in that, A driving ramp is formed on the pusher block, and the driving ramp moves against the bottom of the lifting rod.

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