A motor rotor magnetic steel correction device

Abstract

The utility model provides a motor rotor magnetic steel correction device relates to motor production technical field, including work table, the upper surface rear end of work table is installed with support, the upper surface middle penetration of work table is installed with support tube, install correction mechanism between support tube and support, correction mechanism includes processing cylinder. In the utility model, a plurality of partition plates are equidistantly arranged on the inner wall of the support tube, the partition plates are clamped and connected with the magnetic steel on the raw material, the first auxiliary groove on the pressing plate and the second auxiliary groove on the bottom plate are clamped and matched with the partition plates, the structure can accurately separate and limit the sector-shaped magnetic steel of different specifications or quantities, effectively solves the problem that the magnetic steel is easy to deviate and misaligned during the correction process due to the single positioning mode and the lack of targeted limiting structure of the existing device, ensures that the magnetic steel is always in the correct correction position, and significantly improves the coaxiality correction accuracy of the magnetic steel and the rotating shaft.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and more specifically, to a motor rotor magnet correction device. Background Technology

[0002] The outer circumference of the permanent magnet motor rotor is equipped with magnets. In order to ensure the proper fit between the magnets and the shaft, most of the magnets are fan-shaped. However, due to the machining errors of the existing shafts and fan-shaped magnets, assemblers often need to use a correction device to assist in the assembly process. For example, the permanent magnet motor rotor magnet correction device proposed in application number "201920541177.0" includes an extrusion component and a clamping component. The clamping component is located inside the extrusion component. The upper part of the clamping component is a claw-shaped chuck. The outer surface of the claw-shaped chuck is an outward inclined surface from top to bottom. The lower part of the clamping component is equipped with a positioning block. The positioning block is equipped with a shaft positioning hole. The inner wall of the claw-shaped chuck is coaxial with the inner wall of the shaft positioning hole. The shape of the mounting hole on the upper part of the extrusion component is adapted to the shape of the claw-shaped chuck.

[0003] However, although the above-mentioned technical solution achieves coaxiality correction between the magnet and the rotating shaft by cooperating with the inclined surface of the claw-type chuck and the extrusion piece, and achieves a certain degree of automation by using electromagnets and electromagnetic coils, in practical applications, its positioning method for the magnet is relatively simple. It mainly relies on the coaxiality between the inner surface of the claw-type chuck and the rotating shaft to ensure the position of the magnet. When facing different specifications or quantities of sector-shaped magnets, it lacks a targeted separation and limiting structure, which can easily lead to the magnet shifting or misaligning during the correction process, affecting the correction accuracy. Therefore, we propose a motor rotor magnet correction device to solve the above problems. Utility Model Content

[0004] The main purpose of this invention is to provide a motor rotor magnet correction device. This device solves the problem that although it achieves coaxiality correction between the magnet and the shaft by using a claw-type chuck and the inclined surface of the pressing component, and achieves a certain degree of automation by using electromagnets and electromagnetic coils, its positioning method for the magnet is relatively simple in practical applications. It mainly relies on the coaxiality between the inner surface of the claw-type chuck and the shaft to ensure the position of the magnet. When dealing with different specifications or quantities of sector magnets, it lacks a targeted separation and limiting structure, which can easily lead to the magnet shifting or misaligning during the correction process, affecting the correction accuracy.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A motor rotor magnet straightening device includes a worktable, a bracket mounted on the rear end of the upper surface of the worktable, a support tube extending through the middle of the upper surface of the worktable, a straightening mechanism installed between the support tube and the bracket, the straightening mechanism including a processing cylinder, the processing cylinder being fitted inside the support tube, a raw material being installed inside the support tube, a plurality of partition plates being equally spaced on the inner wall of the support tube, and the partition plates being fitted with the raw material respectively, a bottom plate being movably mounted on the lower end of the processing cylinder, the bottom plate being in contact with the lower end of the raw material, a hydraulic cylinder mounted on the upper surface of the bracket, a pressure plate being installed between the bracket and the worktable, the output end of the hydraulic cylinder movably extending through the interior of the bracket and connected to the pressure plate, the pressure plate being in contact with the upper end of the raw material.

[0007] Preferably, a sleeve is fitted onto the upper end of the raw material, the lower end of the sleeve is connected to the pressure plate, and flanges are respectively installed on the upper end of the sleeve and the output end of the hydraulic cylinder, with several bolts installed between the flanges that are close to each other.

[0008] Preferably, the processing cylinder is connected to the support tube by bolts.

[0009] Preferably, the outer side of the upper surface of the pressure plate is provided with a plurality of first auxiliary grooves, and the outer side of the upper surface of the bottom plate is provided with a plurality of second auxiliary grooves, and the partition plate is engaged with the first auxiliary grooves and the second auxiliary grooves respectively.

[0010] Preferably, a plurality of guide rods are movably installed through the lower end of the processing cylinder. The upper end of the guide rod is connected to the base plate. Limiting plates are respectively installed on the lower end of the guide rod. Tension springs are respectively sleeved on the outer side of the guide rod between the limiting plate and the processing cylinder. The upper and lower ends of the tension springs are respectively connected to the processing cylinder and the limiting plate.

[0011] Preferably, the lower end of the processing cylinder is provided with a through hole.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) In this utility model, several partition plates are equidistantly arranged on the inner wall of the support tube, and the partition plates are engaged with the magnets on the raw materials. At the same time, the first auxiliary groove on the pressure plate and the second auxiliary groove on the bottom plate are engaged with the partition plates. This structure can accurately separate and limit the fan-shaped magnets of different specifications or quantities, effectively solving the problem that the magnets are prone to shifting or misaligning during the correction process due to the single positioning method and lack of targeted limiting structure in the existing device. This ensures that the magnets are always in the correct correction position and significantly improves the coaxiality correction accuracy of the magnets and the rotating shaft.

[0014] (2) In this utility model, a hydraulic cylinder provides a stable and controllable downward pressure to drive the pressure plate to correct the magnets on the raw material. Compared with the existing device that relies on the extrusion of the inclined surface of the extruder to extrude the claw-type chuck and the pressure is difficult to control, the pressure output of the hydraulic cylinder is more uniform and adjustable. It can avoid the problem of the magnets becoming brittle due to excessive extrusion force or the correction effect not being achieved due to insufficient pressure. At the same time, the guide rod in the processing cylinder cooperates with the tension spring to form an elastic support for the bottom plate during the correction process, buffering the impact force during correction, further ensuring the integrity of the magnets during the correction process and reducing the product scrap rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a motor rotor magnet correction device according to the present invention;

[0016] Figure 2 This is a front view structural schematic diagram of a motor rotor magnet correction device according to the present invention;

[0017] Figure 3 This is a side view of the structure of a motor rotor magnet correction device according to the present invention;

[0018] Figure 4 This utility model relates to a motor rotor magnet correction device. Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0019] Figure 5 This utility model relates to a motor rotor magnet correction device. Figure 3 Schematic diagram of the cross-sectional structure at point BB;

[0020] Figure 6 This utility model relates to a motor rotor magnet correction device. Figure 4 Enlarged structural diagram at point C;

[0021] Figure 7 This utility model relates to a motor rotor magnet correction device. Figure 4 Enlarged structural diagram at point D;

[0022] Figure 8 This utility model relates to a motor rotor magnet correction device. Figure 4 Enlarged structural diagram at point E in the middle.

[0023] In the diagram: 1. Workbench; 2. Support; 3. Raw material; 4. Support pipe; 5. Correction mechanism; 501. Hydraulic cylinder; 502. Sleeve; 503. Flange; 504. Pressure plate; 505. First auxiliary groove; 506. Processing cylinder; 507. Divider plate; 508. Base plate; 509. Second auxiliary groove; 510. Guide rod; 511. Limiting plate; 512. Tension spring; 513. Through hole. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. 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 of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0025] like Figures 1 to 8 As shown in the figure, this utility model embodiment proposes a motor rotor magnet correction device, including a workbench 1, a bracket 2 installed at the rear end of the upper surface of the workbench 1, a support tube 4 installed through the middle of the upper surface of the workbench 1, a correction mechanism 5 installed between the support tube 4 and the bracket 2, the correction mechanism 5 including a processing cylinder 506, the processing cylinder 506 being snapped into the inside of the support tube 4, the inside of the support tube 4 containing raw material 3, a plurality of partition plates 507 being installed at equal intervals on the inner wall of the support tube 4, and the partition plates 507 being snapped into the raw material 3 respectively, a bottom plate 508 being movably installed at the lower end of the inside of the processing cylinder 506, the bottom plate 508 being in contact with the lower end of the raw material 3, a hydraulic cylinder 501 being installed on the upper surface of the bracket 2, a pressure plate 504 being installed between the bracket 2 and the workbench 1, the output end of the hydraulic cylinder 501 being movably inserted through the inside of the bracket 2 and connected to the pressure plate 504, the pressure plate 504 being in contact with the upper end of the raw material 3.

[0026] like Figures 4 to 8 As shown, in another embodiment of this utility model, a sleeve 502 is fitted onto the upper end of the raw material 3, and the lower end of the sleeve 502 is connected to the pressure plate 504. Flanges 503 are respectively installed on the upper end of the sleeve 502 and the output end of the hydraulic cylinder 501. Several bolts are installed between the flanges 503 that are close to each other. The processing cylinder 506 is connected to the support pipe 4 by bolts. Several first auxiliary grooves 505 are provided through the outer side of the upper surface of the pressure plate 504, and several second auxiliary grooves 509 are provided through the outer side of the upper surface of the bottom plate 508. The partition plate 507 is respectively connected to the first auxiliary grooves 505 and the second auxiliary grooves 509. An auxiliary groove 505 and a second auxiliary groove 509 are engaged and connected. Several guide rods 510 are movably installed through the lower end of the processing cylinder 506. The upper end of the guide rods 510 is connected to the base plate 508. Limiting plates 511 are respectively installed on the lower end of the guide rods 510. Tension springs 512 are respectively sleeved on the outer side of the guide rods 510 located between the limiting plates 511 and the processing cylinder 506. The upper and lower ends of the tension springs 512 are respectively connected to the processing cylinder 506 and the limiting plates 511. A through hole 513 is provided through the lower end of the processing cylinder 506.

[0027] First, the raw material 3 to be corrected, including the motor rotor and sector magnets, is placed inside the processing cylinder 506, ensuring that the lower end of the raw material 3 is in contact with the base plate 508. Simultaneously, the partition plate 507 inside the processing cylinder 506 is inserted between the magnets at the lower end of the raw material 3 for initial correction. Then, the hydraulic cylinder 501 pushes the sleeve 502 and pressure plate 504 downwards, allowing the pressure plate 504 and sleeve 502 to contact the upper end of the raw material 3. This causes the pressure plate 504 to press the protruding magnets downwards, ensuring a consistent overall height of the magnets. The pressure plate 504 then continues to push the raw material 3 downwards. The material 3 causes the base plate 508 to move downwards, while the partition plate 507 continues to correct and adjust the gap between the magnets to ensure that the height and gap between the magnets are consistent. At the same time, the base plate 508 also causes the limiting plate 511 to move downwards, allowing the limiting plate 511 to work with the processing cylinder 506 to stretch the tension spring 512. After the correction is completed, the output end of the hydraulic cylinder 501 drives the pressure plate 504 to reset, and the tension spring 512 also pulls the guide rod 510 to move upwards and reset. Then the guide rod 510 can drive the material 3 to move upwards, and finally the user can take out the material 3.

[0028] The replacement and installation of sleeve 502 and processing cylinder 506 are completed by connecting the processing cylinder 506 and support pipe 4 with bolts and connecting the flange 503 with bolts. Thus, the processing cylinder 506 and sleeve 502 of various types can be installed according to the raw materials 3.

[0029] The separator 507 is made of POM material, which has good rigidity and wear resistance, and can stably separate and limit the raw material 3 for a long time. Then, the edges and contact surfaces of the separator 507 are rounded to avoid scratching the surface of the fan-shaped magnet on the raw material 3 during the calibration process and to protect the magnet from damage.

[0030] The cooperation between the guide rod 510 and the tension spring 512 can provide elastic support to the base plate 508 during the calibration process, buffer the impact force applied by the pressure plate 504, reduce the rigid collisions on the raw material 3 and the magnet, and further ensure the integrity of the magnet during the calibration process. At the same time, the elastic reset function of the tension spring 512 can drive the base plate 508 to automatically reset without manual adjustment, saving reset time. The hydraulic cylinder 501 drives the pressure plate 504 to reset, which is convenient to operate and can quickly prepare for the next calibration operation, improving the overall calibration efficiency.

[0031] The working principle of this motor rotor magnet correction device:

[0032] In use, the raw material 3 to be corrected, including the motor rotor and sector magnets, is first placed inside the processing cylinder 506, so that the lower end of the raw material 3 is in contact with the bottom plate 508. At the same time, the partition plate 507 inside the processing cylinder 506 is inserted between the magnets at the lower end of the raw material 3 to initially correct the magnets. Then, the hydraulic cylinder 501 pushes the sleeve 502 and the pressure plate 504 downward, so that the pressure plate 504 and the sleeve 502 are in contact with the upper end of the raw material 3. This allows the pressure plate 504 to press the protruding magnets downward, ensuring that the overall height of the magnets is consistent. Then, as the pressure plate 504 continues to push the raw material 3 downward, The movement causes the raw material 3 to move downwards along the base plate 508. At the same time, the partition plate 507 continues to correct and adjust the gap between the magnets to ensure that the height and gap between the magnets are consistent. Simultaneously, the base plate 508 also moves the limiting plate 511 downwards, allowing the limiting plate 511 to work with the processing cylinder 506 to stretch the tension spring 512. After the correction is completed, the output end of the hydraulic cylinder 501 drives the pressure plate 504 to reset. At the same time, the tension spring 512 also pulls the guide rod 510 upwards to reset. Then, the guide rod 510 can move the raw material 3 upwards, and finally, the user can remove the raw material 3.

[0033] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A motor rotor magnet straightening device, comprising a worktable (1), characterized in that: A bracket (2) is installed at the rear end of the upper surface of the workbench (1). A support tube (4) is installed through the middle of the upper surface of the workbench (1). A correction mechanism (5) is installed between the support tube (4) and the bracket (2). The correction mechanism (5) includes a processing cylinder (506). The processing cylinder (506) is engaged inside the support tube (4). The raw material (3) is installed inside the support tube (4). Several partition plates (507) are installed at equal intervals on the inner wall of the support tube (4). The processing cylinder (506) is connected to the raw material (3) by interlocking. The bottom plate (508) is movably installed at the lower end of the internal part of the processing cylinder (506). The bottom plate (508) is in contact with the lower end of the raw material (3). A hydraulic cylinder (501) is installed on the upper surface of the support (2). A pressure plate (504) is installed between the support (2) and the worktable (1). The output end of the hydraulic cylinder (501) moves through the interior of the support (2) and is connected to the pressure plate (504). The pressure plate (504) is in contact with the upper end of the raw material (3).

2. The motor rotor magnet straightening device according to claim 1, characterized in that: The upper end of the raw material (3) is fitted with a sleeve (502), the lower end of the sleeve (502) is connected to the pressure plate (504), the upper end of the sleeve (502) and the output end of the hydraulic cylinder (501) are respectively fitted with flanges (503), and several bolts are installed between the flanges (503) that are close to each other.

3. The motor rotor magnet correction device according to claim 1, characterized in that: The processing cylinder (506) is connected to the support tube (4) by bolts.

4. The motor rotor magnet straightening device according to claim 1, characterized in that: The upper surface of the pressure plate (504) is provided with a plurality of first auxiliary grooves (505), and the upper surface of the bottom plate (508) is provided with a plurality of second auxiliary grooves (509). The partition plate (507) is engaged with the first auxiliary grooves (505) and the second auxiliary grooves (509) respectively.

5. The motor rotor magnet straightening device according to claim 1, characterized in that: A number of guide rods (510) are movably installed through the lower end of the processing cylinder (506). The upper end of the guide rod (510) is connected to the base plate (508). Limiting plates (511) are respectively installed on the lower end of the guide rod (510). Tension springs (512) are respectively sleeved on the outer side of the guide rod (510) located between the limiting plate (511) and the processing cylinder (506). The upper and lower ends of the tension springs (512) are respectively connected to the processing cylinder (506) and the limiting plate (511).

6. The motor rotor magnet correction device according to claim 1, characterized in that: The lower end of the processing cylinder (506) is provided with a through hole (513).

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