A stator-rotor assembling device for permanent magnet synchronous motor

Abstract

The utility model provides a kind of permanent magnet synchronous motor's stator-rotor combined equipment, it includes equipment rack, electric control mechanism is arranged on the equipment rack, first combined mechanism for connecting rotor and second combined mechanism for connecting stator, the first combined mechanism can be controlled by the electric control mechanism and move on the equipment rack along first direction, the first combined mechanism and the second combined mechanism are dispersed along the first direction Distribution;Second combined mechanism can move on the equipment rack along second direction or be fixed by limiting mechanism;The second direction is perpendicular to the first direction.The utility model can guarantee the coaxial degree of stator and rotor in combined process by the synergistic effect of limiting mechanism, first combined mechanism and second combined mechanism, avoid mutual collision and be damaged, realize lossless combined.

Description

Technical Field

[0001] This utility model relates to the field of motor processing equipment technology, and in particular to a stator and rotor assembly equipment for a permanent magnet synchronous motor. Background Technology

[0002] Permanent magnet synchronous motors have advantages such as high efficiency, high power density, high torque density, and high reliability, and are widely used in industries, transportation, and home appliances. Their structure includes a stator, rotor, housing, and end caps. The stator is composed of an iron core, coils, frame, and copper plates. The rotor is mainly composed of a rotor iron core and permanent magnets. Permanent magnets are assembled in the slots of the rotor iron core. There is a small air gap between the stator and the rotor, which allows the rotor to rotate freely under the action of magnetic force.

[0003] During the assembly process, the rotor and stator have a large magnetic force. However, due to the small air gap between the rotor and stator, the related structures may become skewed or offset due to uneven force during manual assembly. This causes friction and collision between the stator and rotor, which in turn affects the integrity of the structure and performance (such as rust resistance and insulation) on the opposing surfaces of the stator and rotor, thus affecting the performance of the permanent magnet synchronous motor after assembly. Utility Model Content

[0004] The purpose of this invention is to provide a stator and rotor assembly device for a permanent magnet synchronous motor to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model includes: a stator and rotor assembly device for a permanent magnet synchronous motor, comprising an equipment frame, on which are mounted an electrical control mechanism, a first assembly mechanism for connecting the rotor, and a second assembly mechanism for connecting the stator. The first assembly mechanism can be controlled by the electrical control mechanism to move along a first direction on the equipment frame, and the first assembly mechanism and the second assembly mechanism are distributed along the first direction. The second assembly mechanism can move along a second direction on the equipment frame or be fixed by a limiting mechanism. The second direction is perpendicular to the first direction.

[0006] Furthermore, the first assembly mechanism includes a first center, a second center, a first adjusting component, and a second adjusting component; along the first direction, the first center, the second assembly mechanism, and the second center are sequentially dispersed; the first adjusting component connects the second adjusting component and the equipment frame to adjust the distance between the second adjusting component and the second assembly mechanism in the first direction; the second adjusting component connects the first center and the second center to adjust the distance between them in the first direction.

[0007] Furthermore, the first pitch adjustment assembly includes a first servo motor, a ball screw pair, a first mounting base, and a second mounting base. The second mounting base is at least partially located between the first mounting base and the second assembly mechanism for mounting the second pitch adjustment assembly. The axial ends of the ball screw pair are rotatably connected to the first mounting base and the equipment frame, respectively. The first servo motor and the second mounting base are respectively connected to the ball screw pair. The second mounting base can be moved along the first direction by being driven by the first servo motor and the ball screw pair.

[0008] Furthermore, the first adjusting component includes a first guide rod and a first guide sleeve, the first guide sleeve being disposed on the second mounting base; the first guide rod is slidably inserted in the first guide sleeve, and its two axial ends are respectively connected to the first mounting base and the equipment frame.

[0009] Furthermore, the second mounting base includes a first mounting plate and a second mounting plate connected by a second guide rod. The second guide rod is fitted with a second guide sleeve, which is fixed to the equipment frame. The first mounting plate and the second mounting plate are located on opposite sides of the second assembly mechanism, and their opposing sides are respectively connected to the first tip and the second tip. The second adjustment assembly includes a servo cylinder with a piston rod facing the second assembly mechanism. The servo cylinder is connected to the first tip and / or the second tip and can drive the first tip and / or the second tip to move along the first direction.

[0010] Furthermore, the ball screw pair is connected to a first mounting plate located above the equipment frame, and a compressed air spring is provided between the first mounting plate and the equipment frame, the compressed air spring extending along the first direction.

[0011] Furthermore, the second assembly mechanism includes a tray, a pressure plate, and a third guide sleeve. The tray is slidably connected to the equipment frame. The limiting mechanism includes at least a first quick-locking bolt that can fix the tray to the equipment frame. The pressure plate and the tray are dispersed along the first direction and connected by a second quick-locking bolt. The third guide sleeve is disposed on the tray, and the second tip slides through the third guide sleeve.

[0012] Furthermore, the equipment frame is provided with a straight through groove, and a flow strip extending along the second direction is provided in the straight through groove. A set of opposite sides of the flow strip are respectively connected to the tray and the cam. The cam is connected to a second servo motor through a drive shaft. The second servo motor can drive the cam to rotate to change the position of the flow strip in the first direction.

[0013] Furthermore, the limiting mechanism includes a positioning pin, the positioning pin and the tray are located on the same side of the equipment frame, and the tray is provided with a positioning hole for pinning the positioning pin.

[0014] Furthermore, the equipment frame is provided with guide blocks distributed along the second direction, the guide blocks and the tray are located on the same side of the equipment frame, and are used to guide the tray;

[0015] The equipment frame is provided with a limiting bracket, and the limiting bracket and the drive shaft are located on the same side of the equipment frame to limit the flow strip.

[0016] The beneficial effects of this utility model include at least the following: the limiting mechanism ensures the coaxiality of the center of the first assembly mechanism and the second assembly mechanism; the first assembly mechanism, which moves along the axis of the permanent magnet synchronous motor, loads the rotor into the stator; the clamping action of the first assembly mechanism on the rotor prevents the rotor from tilting or shifting; and the stable connection between the tray and the housing prevents the stator from tilting or shifting. This ensures the coaxiality of the stator and rotor during the assembly process, prevents them from colliding and being damaged, and achieves non-destructive assembly. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention from a first-view perspective;

[0018] Figure 2 This is an appendix to the embodiments of this utility model. Figure 1 Enlarged view of the structure at point A in the middle;

[0019] Figure 3 This is a side view of the first assembly mechanism in an embodiment of this utility model;

[0020] Figure 4 This is a front view of the second adjustment component in an embodiment of this utility model;

[0021] Figure 5 This is a side view of the second adjustment component in an embodiment of this utility model;

[0022] Figure 6 This is a top view of the second assembly mechanism in an embodiment of this utility model;

[0023] Figure 7 This is a bottom view of the second assembly mechanism in an embodiment of this utility model;

[0024] Figure 8 This is a three-dimensional structural diagram of an embodiment of the present invention from a third-person perspective;

[0025] Figure 9 This is an appendix to the embodiments of this utility model. Figure 8 Enlarged view of the structure at point B.

[0026] In the picture:

[0027] 1. Equipment frame; 101. Straight through groove;

[0028] 2. Electrical control mechanism;

[0029] 3. First assembly mechanism;

[0030] 301, the top-tier;

[0031] 302, the second best;

[0032] 303, First pitch adjustment assembly; 3031, First servo motor; 3032, First mounting base; 3033, Ball screw; 3034, Screw nut; 3035, Linear bearing; 3036, Bearing housing; 3037, First guide rod; 3038, First guide sleeve; 3039, Second mounting base; 3039a, Second guide rod; 3039b, Second guide sleeve; 3039c, First mounting plate; 3039d, Second mounting plate;

[0033] 304, Second pitch adjustment assembly; 3041, Servo electric cylinder;

[0034] 305. Cushioning pad;

[0035] 4. Limiting mechanism; 401. First quick-locking bolt; 402. Positioning pin;

[0036] 5. Second assembly mechanism; 501. Tray; 5011. Positioning hole; 502. Pressure plate; 503. Second quick-lock bolt; 504. Support block; 505. Third guide bushing; 506. Flow bar; 507. Second servo motor; 508. Drive shaft; 509. Driven shaft; 510. Drive cam; 511. Driven cam; 512. Limit bracket; 513. Guide block;

[0037] 6. Compressed gas spring. Detailed Implementation

[0038] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Reference Appendix Figure 1-9 This embodiment provides a stator-rotor assembly device for a permanent magnet synchronous motor, which includes an equipment frame 1, an electrical control mechanism 2, a first assembly mechanism 3, a limiting mechanism 4, and a second assembly mechanism 5. The electrical control mechanism 2, the first assembly mechanism 3, the second assembly mechanism 5, and the limiting mechanism 4 are mounted on the equipment frame 1. The electrical control mechanism 2 is used to control the operation of the equipment, particularly controlling the first assembly mechanism 3 to move along a first direction on the equipment frame 1. To facilitate a clear and concise explanation of this technical solution, this embodiment exemplifies that: the first direction is a vertical direction; the first assembly mechanism 3 and the second assembly mechanism 5 are distributed along the first direction, i.e., the first assembly mechanism 3 and the second assembly mechanism 5 are distributed along the vertical direction; the second assembly mechanism 5 can move along a second direction on the equipment frame 1 or be fixed by the limiting mechanism 4; wherein: the second direction is perpendicular to the first direction. Based on the example that the first direction is a vertical direction, this embodiment exemplarily defines the second direction as a horizontal direction, i.e., the second assembly mechanism 5 can move along a horizontal direction on the equipment frame 1 or be fixed by the limiting mechanism 4.

[0042] In the aforementioned equipment, the first assembly mechanism 3 is used to directly or indirectly connect the rotor, and the second assembly mechanism 5 is used to directly or indirectly connect the stator. It is known that the stator has a central accommodating space for accommodating the rotor, which can move axially into and out of the stator. The second assembly mechanism 5 can move horizontally (i.e., in the second direction) on the equipment frame 1 to a position that does not correspond to the first assembly mechanism 3, facilitating unobstructed loading and unloading by workers or robotic arms. Alternatively, the second assembly mechanism 5 can move horizontally (i.e., in the second direction) to correspond to the first assembly mechanism 3, and then the limiting mechanism 4 fixes the second assembly mechanism 5 at the position corresponding to the first assembly mechanism 3, ensuring the stability of the position of the second assembly mechanism 5 and the stator it is connected to during the stator and rotor assembly process. After the rotor is fixed to the first assembly mechanism 3, the first assembly mechanism 3 drives the rotor to move vertically (i.e., in the first direction) under the control of the electrical control mechanism 2, gradually bringing the rotor closer to the second assembly mechanism 5, and ultimately inserting the rotor into the accommodating space within the stator.

[0043] By adopting the above technical solution, the center coaxiality of the first assembly mechanism 3 and the second assembly mechanism 5 is ensured by the limiting mechanism 4, and the positional stability of the second assembly mechanism 5 in the horizontal direction (i.e., the second direction) is ensured. Then, the first assembly mechanism 3 moves in a straight line in the vertical direction (i.e., the first direction) to ensure the center coaxiality of the stator and rotor during the assembly process, and to avoid the stator and rotor from being tilted, offset and collided with each other and damaged.

[0044] Typically, the assembly of a permanent magnet synchronous motor requires following a specific sequence, which includes at least the assembly of the stator and rotor, followed by the installation of the end caps. In this embodiment, based on this assembly sequence, and considering the need to minimize direct contact between the equipment and the stator and rotor to prevent deformation, when assembling the stator and rotor using this assembly equipment, the stator is first stably connected to the permanent magnet synchronous motor housing. Then, the housing is fixed to the second assembly mechanism 5, and the rotor is fixed to the first assembly mechanism 3. After assembling the stator and rotor using this equipment, the end caps of the permanent magnet synchronous motor are then fastened to the housing at another workstation, completing the assembly. In the above assembly sequence, due to the high rigidity of the housing, directly connecting it to the second assembly mechanism 5 avoids deformation of the stator due to direct compression (or other limiting methods) from the second assembly mechanism 5.

[0045] When considering how to reduce the damage to the rotor caused by this assembly equipment, the inventors discovered that the stiffness of the central shaft of the rotor is higher than that of other parts of the rotor. Furthermore, before the permanent magnet synchronous motor is fully assembled, for example, for the final installation of the control assembly, sensors, etc., or for the purpose of convenient observation of the motor assembly, both ends of the housing are generally connected. Therefore, this embodiment makes the following structural design for the first assembly mechanism 3: The first assembly mechanism 3 includes a first center 301, a second center 302, a first pitch adjustment component 303, and a second pitch adjustment component 304; along the vertical direction (i.e., the first direction), the first center 301, the second assembly mechanism 5, and the second center 302 are sequentially dispersed; the first pitch adjustment component 303 connects the second pitch adjustment component 304 and the equipment frame 1 to adjust the distance between the second pitch adjustment component 304 and the second assembly mechanism 5 in the vertical direction (i.e., the first direction); the second pitch adjustment component 304 connects the first center 301 and the second center 302 to adjust the distance between them in the vertical direction (i.e., the first direction).

[0046] The operating principle of the first assembly mechanism 3 is as follows: the housing and stator are fixed on the second assembly mechanism 5. The first tip 301 and the second tip 302 are located on the upper and lower sides of the housing, respectively. When the first adjustment component 303 is used to adjust the distance between the second adjustment component 304 and the second assembly mechanism 5 in the vertical direction (i.e., the first direction), the top of the second tip 302 can penetrate the housing from below and gradually extend from the top of the housing. At this time, the worker can place the rotor shaft on the second tip 302, and then use the second adjustment component 304 to adjust the distance between the first tip 301 and the second tip 302 in the vertical direction (i.e., the first direction), so that the first tip 301 and the second tip 302 abut against the rotor shaft from the upper and lower sides, respectively, and apply opposing abutment forces to the axial sides of the rotor to ensure the connection stability between the first assembly mechanism 3 and the rotor. Finally, the first adjustment component 303 is used to drive the entire second adjustment component 304 and the rotor it holds to move into the stator, realizing the operation of assembling the stator and rotor along the axial direction of the permanent magnet synchronous motor.

[0047] In specific implementation, there can be multiple configuration schemes for the first adjustment component 303. This embodiment only provides some feasible schemes as examples: Refer to Appendix Figure 3-5The first pitch adjustment assembly 303 includes a first servo motor 3031, a ball screw pair, a first mounting base 3032, and a second mounting base 3039. The second mounting base 3039 is at least partially located between the first mounting base 3032 and the second assembly mechanism 5 for mounting the second pitch adjustment assembly 304. The ball screw pair includes a ball screw 3033 and a screw nut 3034. The ball screw 3033 extends in the vertical direction (i.e., the first direction), and its two axial ends are rotatably connected to the first mounting base 3032 and the equipment frame 1, respectively. The output shaft of the first servo motor 3031 is connected to the ball screw nut 3034. The ball screw 3033 and the second mounting base 3039 are connected to the side edge of the screw nut 3034. When the first servo motor 3031 is controlled by the electronic control mechanism 2 to drive the ball screw 3033 to rotate, the screw nut 3034 will drive the second mounting base 3039 to move along the axial direction (i.e., the first direction) of the ball screw 3033, so that the distance between the second mounting base 3039 and the second assembly mechanism 5 changes. The second pitch adjustment component 304 is located on the second mounting base 3039. Therefore, the above operation will eventually cause the distance between the second pitch adjustment component 304 and the second assembly mechanism 5 to change.

[0048] The ball screw 3033 described above can be rotatably connected to the first mounting base 3032 and the equipment frame 1 by: mounting linear bearings 3035 on the first mounting base 3032 and the equipment frame 1 respectively, passing the axial ends of the ball screw 3033 through the linear bearings 3035 respectively, and mounting the first servo motor 3031 on the top of the ball screw 3033 (in practice, a reducer and coupling can also be configured between the first servo motor 3031 and the ball screw 3033 as needed). If necessary, a bearing seat 3036 can also be set on the equipment frame 1, and the linear bearing 3035 can be installed on the bearing seat 3036 so that the bottom end of the ball screw 3033 has a certain distance from the surface of the equipment frame 1, so as to achieve the purpose of obstacle avoidance and reducing damage.

[0049] Furthermore, this embodiment also includes a first guide rod 3037 and a first guide sleeve 3038 in the first adjusting assembly 303. The first guide sleeve 3038 is fixedly mounted on the second mounting base 3039. The first guide rod 3037 extends vertically (i.e., in the first direction) and slides through the first guide sleeve 3038. The axial ends of the first guide rod 3037 are respectively connected to the first mounting base 3032 and the equipment frame 1. On the one hand, when the first servo motor 3031, in conjunction with the ball screw pair, drives the second mounting base 3039 to move vertically (i.e., in the first direction), the first guide sleeve 3038 will rise and fall together with the second mounting base 3039, which can improve the smoothness and directional stability of the second mounting base 3039 during the rising and falling process. On the other hand, the first guide rod 3037 can also provide support for the first mounting base 3032, preventing the ball screw 3033 from rapidly wearing out due to independently bearing the gravity load of the first mounting base 3032, thereby improving the service life of the equipment.

[0050] In specific implementation, there can be multiple configuration schemes for the second adjustment component 304. This embodiment only provides some feasible schemes as examples: Refer to Appendix Figure 4-5 The second mounting base 3039 includes a second guide rod 3039a, a second guide sleeve 3039b, a first mounting plate 3039c, and a second mounting plate 3039d. The first mounting plate 3039c and the first mounting base 3032 are located on the same side of the second assembly mechanism 5. The first mounting plate 3039c and the second mounting plate 3039d are located on opposite sides of the second assembly mechanism 5. The second guide sleeve 3039b is fixedly mounted on the equipment frame 1. The second guide rod 3039a extends vertically (i.e., in the first direction) and slides through the second guide sleeve 3039b. The axial ends of the second guide rod 3039a are respectively connected to the first mounting plate 3039c and the second mounting base 3039d. Mounting plate 3039d, first mounting plate 3039c and second mounting plate 3039d are respectively connected to the first tip 301 and the second tip 302 on opposite sides; the second adjustment assembly 304 includes a servo cylinder 3041, which can be mounted on the first mounting plate 3039c or the second mounting plate 3039d, and its piston rod extends in the vertical direction (i.e. the first direction) and faces the second assembly mechanism 5; the first tip 301 or the second tip 302 is disposed at the free end of the piston rod. When the servo cylinder 3041 is controlled by the electric control mechanism 2, it can drive the first tip 301 or the second tip 302 to move in the vertical direction (i.e. the first direction).

[0051] Taking the first tip 301 connected to the servo cylinder 3041 as an example, the operating principle of the first adjusting component 303 and the second adjusting component 304 includes: the housing and the stator are fixed on the second assembly mechanism 5, the first tip 301 and the second tip 302 are located on the upper and lower sides of the housing respectively, the first servo motor 3031 drives the ball screw 3033 to rotate, which in turn drives the second mounting base 3039 to rise, so that the first tip 301 and the second tip 302 rise at the same time, so that the top of the second tip 302 can penetrate the housing from below and gradually extend from the top of the housing. At this time, the worker can rotate the rotor shaft. The rotor is placed on the second center 302; then the servo cylinder 3041 drives the first center 301 to descend, so that the first center 301 and the second center 302 press against the rotor shaft from the upper and lower sides respectively, applying opposing pressing forces to both sides of the rotor's axial direction to ensure the connection stability between the first assembly mechanism 3 and the rotor; finally, the first servo motor 3031 drives the ball screw 3033 to rotate in the opposite direction, thereby driving the second mounting base 3039 to descend, so that the rotor held by the first center 301 and the second center 302 moves into the stator, realizing the operation of assembling the stator and rotor along the axial direction of the permanent magnet synchronous motor.

[0052] Additionally, if necessary, obstacle avoidance holes can be provided on the first mounting base 3032, with the inner diameter of the obstacle avoidance holes being larger than the outer diameter of the servo cylinder 3041, to prevent the servo cylinder 3041 from colliding with the first mounting base 3032 when the servo cylinder 3041 and the second mounting base 3039 rise with the lead screw nut 3034; of course, a buffer pad 305 can also be sleeved on the outer wall of the bottom end of the second guide rod 3039a to prevent the top surface of the second mounting plate 3039d from rigidly colliding with the equipment frame 1 when the second mounting base 3039 rises with the lead screw nut 3034.

[0053] In this technical solution, the ball screw assembly, particularly the screw nut 3034, can be connected to either the first mounting plate 3039c or the second mounting plate 3039d. As an example, in this embodiment, the screw nut 3034 is connected to the first mounting plate 3039c located above the equipment frame 1, and a compression air spring 6 is provided between the first mounting plate 3039c and the equipment frame 1. The compression air spring 6 extends in the vertical direction (i.e., the first direction) and can provide support for the first mounting plate 3039c, preventing the screw nut 3034 from rapidly wearing out due to independently bearing the gravity load of the second mounting seat 3039, thereby improving the service life of the equipment.

[0054] In addition, generally speaking, to meet the internal and external assembly requirements of permanent magnet synchronous motors, the two ends of the rotor shaft will have different concave and convex structures. Therefore, in order to improve the connection stability between the first assembly mechanism 3 and the rotor, the opposing ends of the first tip 301 and the second tip 302 can be designed to adapt to the concave and convex structures at both ends of the rotor shaft (not shown in the figure). For example, if the part of the rotor shaft near the first tip 301 has a concave structure, then the part of the first tip 301 near the rotor shaft can be provided with a protruding structure. Different first tips 301 and second tips 302 can also be designed according to different permanent magnet synchronous motors, and the first tip 301 and the servo cylinder 3041 can be designed as a quick-release structure (e.g., threaded connection or adding existing quick-release locking parts), and the second tip 302 and the second mounting plate 3039d can be designed as a quick-release structure (e.g., threaded connection or adding existing quick-release locking parts). When assembling different permanent magnet synchronous motors, the appropriate first tip 301 and second tip 302 can be replaced.

[0055] On the other hand, based on the above-mentioned assembly sequence and principle of the stator and rotor, this embodiment makes the following structural design for the second assembly mechanism 5 and the limiting mechanism 4: The second assembly mechanism 5 includes a tray 501, which is slidably connected to the equipment frame 1 and can slide on the equipment frame 1 in the horizontal direction (i.e., the second direction) to facilitate unobstructed loading and unloading by manual or robotic arms and other equipment; The limiting mechanism 4 includes a first quick-locking bolt 401 that can fix the tray 501 to the equipment frame 1. When the tray 501 slides in the horizontal direction (i.e., the second direction) to the position corresponding to the first assembly mechanism 3, the first quick-locking bolt 401 can fix the tray 501 to the equipment frame 1 to ensure the coaxiality of the center of the first assembly mechanism 3 and the tray 501, thereby ensuring the coaxiality of the stator and rotor during the assembly process.

[0056] Under the above design premise, to ensure the coaxiality of the stator and rotor during assembly, the coaxiality of the center of the tray 501 and the housing should also be ensured. Therefore, the second assembly mechanism 5 also includes a pressure plate 502. The pressure plate 502 and the tray 501 are distributed along the vertical direction (i.e., the first direction) and connected by a second quick-locking bolt 503. In use, the edge of the housing (with the stator installed inside) is placed between the pressure plate 502 and the tray 501, and then the pressure plate 502 is pressed against the housing with the second quick-locking bolt 503 to ensure the position of the housing. Stability ensures the positional stability of the stator. If the bottom of the housing has different concave and convex shapes and cannot smoothly abut against the surface of the tray 501, support blocks 504 distributed around the circumference of the housing can be set on the top of the tray 501. The edge of the housing is placed between the pressure plate 502 and the support blocks 504. Then, the pressure plate 502 is pressed against the housing with the second quick-locking bolt 503 to ensure the stability of the housing. In addition, the support blocks 504 have a certain thickness so that the bottom of the housing can be suspended and will not collide with the tray 501.

[0057] To ensure the smooth movement of the second tip 302, a third guide sleeve 505 should also be provided in the second assembly mechanism 5. The third guide sleeve 505 is fixedly installed on the tray 501, and the second tip 302 slides through the third guide sleeve 505, so that the second tip 302 can move smoothly and stably.

[0058] It should also be noted that this embodiment only exemplifies the relevant physical structural components and operating principles required to ensure the coaxiality of the centers of the first assembly mechanism 3 and the second assembly mechanism 5. The precise coordinate design of each structure to ensure the coaxiality of the centers of the first assembly mechanism 3 and the second assembly mechanism 5 can be calculated and determined by those skilled in the art according to actual needs (such as the specifications and shape of the permanent magnet synchronous motor), and no more specific limitations are made here.

[0059] Reference Appendix Figure 6 In some superior implementations, the equipment frame 1 is provided with a straight through groove 101, and a flow bar 506 extending in the horizontal direction (i.e., the second direction) is provided in the straight through groove 101. The top and bottom ends of the flow bar 506 are respectively connected to the tray 501 and the cam. The cam is connected to the second servo motor 507 through the drive shaft (in implementation, a reducer and coupling can also be configured between the second servo motor 507 and the drive shaft as needed, or the second servo motor 507 can be directly selected as a right angle reducer). The drive shaft is rotatably connected to the bottom surface of the equipment frame 1. The second servo motor 507 can be controlled by the electronic control mechanism 2 to drive the cam to rotate, thereby changing the position of the flow bar 506 in the vertical direction (i.e., the first direction). When the second servo motor 507 drives the drive shaft to rotate, the cam rotates accordingly, thereby lifting or lowering the flow bar 506. When the flow bar 506 is lifted, the tray 501 rises accordingly, so that the bottom surface of the tray 501 no longer abuts against the equipment frame 1. The tray 501 can move on the flow bar 506 when pushed by hand. The rollers on the flow bar 506 and the bottom surface of the tray 501 have rolling friction, which makes it easier to push the tray 501 manually.

[0060] To ensure the stable setting and smooth lifting of the flow bar 506, the aforementioned drive shaft and cam can be configured as follows: the drive shaft includes a drive shaft 508 and a driven shaft 509, and the cam includes a drive cam 510 and a driven cam 511. The drive shaft 508 and the driven shaft 509 are perpendicular to the flow bar 506 and are located at both ends of the length direction of the flow bar 506, respectively. The drive shaft 508 is directly connected to the second servo motor 507. The drive cam 510 is fixedly sleeved outside the drive shaft 508, and the driven cam 511 is fixedly sleeved outside the driven shaft 509. The drive cam 510 and the driven cam 511 are respectively connected to the flow bar 506. The drive shaft 508, driven shaft 509, drive cam 510, and driven cam 511 work together to support the flow bar 506. During operation: the second servo motor 507 drives the drive shaft 508 to rotate, the drive cam 510 rotates accordingly and drives the flow bar 506 to rise and fall. When the flow bar 506 rises and falls, it will drive the driven cam 511 to rotate. Therefore, even if there is no drive device on the driven shaft 509, the driven shaft 509 can rotate accordingly without affecting the rise and fall of the flow bar.

[0061] In addition, a limiting bracket 512 is provided at the bottom of the equipment frame 1. The limiting bracket 512 has an upward-opening U-shaped structure and is correspondingly set below the straight through groove 101. The limiting bracket 512 is used to limit and support the flow bar 506 when it descends, so as to prevent the drive shaft 508 and the driven shaft 509 from being rapidly worn due to mainly bearing the gravity load of the second mounting base 3039, thereby improving the service life of the equipment.

[0062] Of course, a positioning pin 402 can also be configured in the limiting mechanism 4. The positioning pin 402 and the tray 501 are located on the same side of the equipment frame 1. The tray 501 is provided with a positioning hole 5011 for pinning the positioning pin 402. When the flow bar 506 is lifted, the tray 501 can be separated from the positioning pin 402. When the tray 501 moves to the designated position, the flow bar 506 is lowered, and the tray 501 can be firmly connected with the positioning pin 402 to achieve the initial positioning of the tray 501. After the initial positioning, the tray 501 is fixed by the first quick-locking bolt 401. The first quick-locking bolt 401 can not only limit the position of the tray 501 in the horizontal direction (i.e., the second direction) to ensure the coaxiality of the center of the first assembly mechanism 3 and the second assembly mechanism 5, but also limit the position of the tray 501 in the vertical direction (i.e., the first direction) to prevent the housing and stator from moving in the vertical direction (i.e., the first direction) when the assembly equipment is running, thus affecting the assembly efficiency and assembly accuracy.

[0063] To facilitate rapid and accurate positioning of the pallet 501, the equipment frame 1 is also equipped with guide blocks 513 distributed along the horizontal direction (i.e., the second direction). The guide blocks 513 and the pallet 501 are located on the same side of the equipment frame 1 to guide the pallet 501 so that it can move along the horizontal direction (i.e., the second direction) according to a preset path, facilitating loading and unloading operations. Furthermore, the orientation of the guide blocks 513 can be optimized. For example, the side edge of the guide block 513 corresponding to the first assembly mechanism 3 is parallel to the preset movement path of the pallet 501, while the side edges of the guide blocks 513 in other locations are inclined in a trumpet shape from the first assembly mechanism 3 towards the loading and unloading station (see attached diagram). Figure 6 This makes the movement of the tray 501 back to the first assembly mechanism 3 smoother.

[0064] The electronic control mechanism 2 used in this embodiment is existing technology, including but not limited to: control keys, power supply, cable harness and other structures, which can be selected and configured by those skilled in the art as needed, and will not be described in detail here.

[0065] In summary, the usage methods of this combined equipment include:

[0066] (1) Stabilize the connection between the housing and stator of the permanent magnet synchronous motor;

[0067] (2) The second servo motor 507 is started by the electronic control mechanism 2, and the flow bar 506 is lifted by the transmission shaft and cam, so that the tray 501 is separated from the positioning pin 402. The tray 501 is manually pushed to move it along the second direction until it is separated from the part that is directly opposite to the first assembly mechanism 3.

[0068] (3) Place the housing and stator of the permanent magnet synchronous motor on the tray 501, press the pressure plate 502 on the housing, and use the second quick-locking bolt 503 to connect the pressure plate 502 and the tray 501 firmly so that the pressure plate 502 presses the housing tightly.

[0069] (4) Manually push the tray 501 to move it along the second direction until it is directly opposite the first assembly mechanism 3;

[0070] (5) Start the second servo motor 507 using the electric control mechanism 2, and lower the flow bar 506 through the transmission shaft and cam to connect the tray 501 with the positioning pin 402. Use the first quick-locking bolt 401 to securely connect the tray 501 with the equipment frame 1.

[0071] (6) The first servo motor 3031 is started by the electronic control mechanism 2, and the second mounting base 3039 is driven to rise through the ball screw pair, so that the second top point 302 penetrates the housing of the permanent magnet synchronous motor from bottom to top;

[0072] (7) Place the rotor on the second tip 302, and use the electric mechanism to start the servo cylinder 3041 to drive the first tip 301 to descend, so that the first tip 301 and the second tip 302 clamp the rotor shaft from the top and bottom ends of the rotor respectively.

[0073] (8) The first servo motor 3031 is started by the electronic control mechanism 2, and the second mounting base 3039 is driven to descend through the ball screw pair, so that the rotor held by the first tip 301 and the second tip 302 descends and moves to the inner housing of the stator.

[0074] (9) Use the electronic control mechanism 2 to start the servo cylinder 3041, drive the first tip 301 to rise, so that the first tip 301 moves onto the housing of the permanent magnet synchronous motor. Then use the electronic control mechanism 2 to start the first servo motor 3031, drive the second mounting base 3039 to fall through the ball screw pair, so that the second tip 302 separates from the housing of the permanent magnet synchronous motor. During this process, the electronic control mechanism 2 should control the movement amplitude of the servo cylinder 3041 and the first servo motor 3031 so that after the second mounting base 3039 falls, the first tip 301 is above the housing and the second tip is below the housing, that is: the first tip 301 and the second tip 302 are separated from the housing. Repeat step (2) and then unload the assembled stator, rotor and housing.

[0075] Compared with the prior art, the beneficial effects of this utility model include at least the following: the limiting mechanism 4 ensures the coaxiality of the center of the first assembly mechanism 3 and the second assembly mechanism 5, and the first assembly mechanism 3, which moves along the axis of the permanent magnet synchronous motor, installs the rotor into the stator. The clamping action of the first assembly mechanism 3 on the rotor prevents the rotor from tilting or shifting. The stable connection between the tray 501 and the housing prevents the stator from tilting or shifting. The coaxiality of the stator and rotor can be guaranteed during the assembly process, and the two can be prevented from colliding and being damaged, thus achieving non-destructive assembly.

[0076] The above are preferred embodiments of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A stator and rotor assembly device for a permanent magnet synchronous motor, characterized in that, The device includes a frame on which an electrical control mechanism, a first assembly mechanism for connecting a rotor, and a second assembly mechanism for connecting a stator are mounted. The first assembly mechanism can be controlled by the electrical control mechanism to move along a first direction on the frame. The first assembly mechanism and the second assembly mechanism are distributed along the first direction. The second assembly mechanism can move along a second direction on the frame or be fixed by a limiting mechanism. The second direction is perpendicular to the first direction.

2. The stator and rotor assembly equipment for a permanent magnet synchronous motor according to claim 1, characterized in that, The first assembly mechanism includes a first center, a second center, a first adjusting component, and a second adjusting component; along the first direction, the first center, the second assembly mechanism, and the second center are sequentially dispersed; the first adjusting component connects the second adjusting component and the equipment frame to adjust the distance between the second adjusting component and the second assembly mechanism in the first direction; the second adjusting component connects the first center and the second center to adjust the distance between them in the first direction.

3. The stator and rotor assembly equipment for a permanent magnet synchronous motor according to claim 2, characterized in that, The first pitch adjustment assembly includes a first servo motor, a ball screw pair, a first mounting base, and a second mounting base. The second mounting base is at least partially located between the first mounting base and the second assembly mechanism for mounting the second pitch adjustment assembly. The axial ends of the ball screw pair are rotatably connected to the first mounting base and the equipment frame, respectively. The first servo motor and the second mounting base are respectively connected to the ball screw pair. The second mounting base can be moved along the first direction by being driven by the first servo motor and the ball screw pair.

4. The stator and rotor assembly equipment for a permanent magnet synchronous motor according to claim 3, characterized in that, The first adjustment assembly includes a first guide rod and a first guide sleeve, the first guide sleeve being disposed on the second mounting base; the first guide rod is slidably inserted in the first guide sleeve, and its two axial ends are respectively connected to the first mounting base and the equipment frame.

5. The stator and rotor assembly equipment for a permanent magnet synchronous motor according to claim 3 or 4, characterized in that, The second mounting base includes a first mounting plate and a second mounting plate connected by a second guide rod. A second guide sleeve is fitted over the second guide rod and is fixed to the equipment frame. The first mounting plate and the second mounting plate are located on opposite sides of the second assembly mechanism, and their opposing sides are respectively connected to the first tip and the second tip. The second adjustment assembly includes a servo cylinder with a piston rod facing the second assembly mechanism. The servo cylinder is connected to the first tip and / or the second tip and can drive the first tip and / or the second tip to move along the first direction.

6. The stator and rotor assembly equipment for a permanent magnet synchronous motor according to claim 5, characterized in that, The ball screw pair is connected to a first mounting plate located above the equipment frame. A compressed air spring is provided between the first mounting plate and the equipment frame, and the compressed air spring extends along the first direction.

7. The stator and rotor assembly equipment for a permanent magnet synchronous motor according to any one of claims 2-4 and 6, characterized in that, The second assembly mechanism includes a tray, a pressure plate, and a third guide sleeve. The tray is slidably connected to the equipment frame. The limiting mechanism includes at least a first quick-locking bolt that can fix the tray to the equipment frame. The pressure plate and the tray are dispersed along the first direction and connected by a second quick-locking bolt. The third guide sleeve is disposed on the tray, and the second tip slides through the third guide sleeve.

8. The stator and rotor assembly equipment for a permanent magnet synchronous motor according to claim 7, characterized in that, The equipment frame is provided with a straight through groove, and a flow strip extending along the second direction is provided in the straight through groove. A set of opposite sides of the flow strip are respectively connected to the tray and the cam. The cam is connected to a second servo motor through a drive shaft. The second servo motor can drive the cam to rotate to change the position of the flow strip in the first direction.

9. The stator and rotor assembly equipment for a permanent magnet synchronous motor according to claim 8, characterized in that, The limiting mechanism includes a positioning pin, the positioning pin and the tray are located on the same side of the equipment frame, and the tray is provided with a positioning hole for pinning the positioning pin.

10. The stator and rotor assembly equipment for a permanent magnet synchronous motor according to claim 8 or 9, characterized in that, The equipment frame is provided with guide blocks that are distributed along the second direction. The guide blocks and the tray are located on the same side of the equipment frame to guide the tray. The equipment frame is provided with a limiting bracket, and the limiting bracket and the drive shaft are located on the same side of the equipment frame to limit the flow strip.

Images