Motor magnet bonding tooling

Abstract

This application discloses a fixture for attaching magnetic tiles to a motor, belonging to the field of motors. It includes a chassis; a magnetic tile disc, disposed opposite to the chassis, with mating holes on its surface for mounting the rotor; a guide rod, disposed on the chassis, for guiding the magnetic tile disc towards or away from the chassis; a centering shaft, one end fixed to the chassis, the other end slidably disposed within the mating hole; and a limiting shaft, slidably disposed at the end of the centering shaft located within the mating hole. The magnetic tile disc surface forms several magnetic tile grooves for mounting the magnetic tiles, one end of each groove connecting to the mating hole. A distance X exists between the side wall of the limiting shaft and the inner wall of the mating hole, the distance X being greater than the thickness of the magnetic tile but less than the thickness of two magnetic tiles. A support platform is provided at the upper end of the centering shaft, and the support platform is only used to contact the magnetic tile mated to the limiting shaft. The beneficial effect of this application is that it provides a simple-to-operate fixture for attaching magnetic tiles to a motor.

Description

Technical Field

[0001] This application relates to the field of motors, and more specifically, to a tooling for attaching magnetic tiles to motors. Background Technology

[0002] Compared to electrically excited motors, permanent magnet motors have advantages such as small size, light weight, simple structure, reliable operation, low loss, and high efficiency. Permanent magnet motor rotors are generally divided into two types: internal rotors and external rotors. In the prototype manufacturing process of external rotor permanent magnet motors, the process of attaching magnet tiles to the rotor is the most tedious and time-consuming.

[0003] For example, the auxiliary device for attaching magnetic tiles to the rotor of a permanent magnet motor (patent number CN201910140944.1) involves applying adhesive to the inner side of the rotor yoke between any two partition sleeves, holding the magnetic tile cylinder of the magnetic tile installation fixture by hand, pressing the inner side of the mounting plate against the outer side of the rotor yoke, with the bottom front of the magnetic tile cylinder close to the top of the rotor yoke, and the magnetic tile baffle positioned between the two partition sleeves and facing the inner side of the rotor yoke. Pushing the handle downwards causes the top block to slowly slide the magnetic tile down along the magnetic tile baffle. As the magnetic tile slides down, it is close to the inner side of the rotor yoke, preventing collision. Since the magnetic tile is already magnetized, it is directly attached to the inner wall of the rotor yoke coated with adhesive. Then, the magnetic tile installation fixture is removed by hand, thus completing the attachment of one magnetic tile.

[0004] The aforementioned tooling process is cumbersome to operate.

[0005] There is currently no easy-to-use fixture for attaching magnetic tiles to motors. Summary of the Invention

[0006] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0007] In order to solve the technical problems mentioned in the background section above, some embodiments of this application provide a motor magnetic tile attaching fixture and a chassis;

[0008] The magnetic tile is positioned opposite the chassis and has mating holes on its surface for mounting the rotor.

[0009] The guide rod, mounted on the chassis, is used to guide the magnetic tile disk toward or away from the chassis;

[0010] The centering shaft is fixed at one end to the base plate and slidably disposed in the mating hole at the other end.

[0011] The limiting shaft, which can slide up and down, is located at one end of the centering shaft within the mating hole;

[0012] The magnetic tile disc has several grooves on its surface for mounting the magnetic tiles, one end of which connects to a mating hole. A distance X exists between the sidewall of the limiting shaft and the inner wall of the mating hole, where X is greater than the thickness of the magnetic tile but less than the thickness of the two magnetic tiles. The upper part of the centering shaft only contacts the magnetic tile that is in contact with the limiting shaft.

[0013] In operation, equal numbers of magnetic tiles with opposite polarities are sequentially placed into the magnetic tile slots of the magnetic tile disc. The tiles adhere to the side wall of the limiting shaft due to their own magnetism. At this time, the magnetic tile disc and the workpiece are pressed down simultaneously, and the centering shaft pushes out one layer of magnetic tiles. The remaining magnetic tiles move with the magnetic tile disc and hug the rotor. Then they are released. Under the action of the first spring, the entire mechanism returns to its original state, and the magnetic tiles hug the rotor. They can then be removed.

[0014] Furthermore, the axially concave portion of the centering shaft end face forms a limiting groove. The limiting shaft is inserted into the limiting groove and slides along the axial direction of the limiting groove. The bottom of the limiting shaft abuts against the bottom of the limiting groove, so that the limiting shaft is limited in the axial direction.

[0015] When the bottom of the centering shaft comes into contact with the bottom of the limiting groove, the support platform is flush with the upper surface of the centering shaft.

[0016] Furthermore, a spring cavity is formed in the concave portion of the centering shaft near the chassis, and a slide rod is formed at the bottom of the limiting shaft, with the slide rod portion inserted into the spring cavity;

[0017] A first spring is fixedly installed at the end of the slide rod that is inserted into the spring cavity, and the other end of the first spring is fixedly connected to the bottom of the spring cavity;

[0018] The first spring always provides a limiting force in the direction away from the chassis.

[0019] Furthermore, a limiting piece is fixedly provided on the end face of the slide rod located in the spring cavity, and the limiting piece abuts against the top wall of the spring cavity;

[0020] The limiting plate abuts against the top wall of the spring cavity so that the top of the limiting shaft is higher than the magnetic tile.

[0021] Furthermore, the upper part of the centering shaft is recessed to form a limiting hole, and the rotor is inserted into the limiting hole so that the side wall of the rotor is flush with the outer wall of the limiting shaft.

[0022] Furthermore, a positioning plate is fixed on the upper end face of the magnetic tile, and the positioning plate is provided with positioning holes corresponding to the mating holes;

[0023] The distance between the positioning hole wall and the outer wall of the rotor is only enough for one magnetic tile to pass through.

[0024] Furthermore, the magnetic tile disc is provided with several guide holes for the guide rod to pass through, and the guide rod is provided with two limiting plates that contact the upper surface of the magnetic tile disc;

[0025] The guide rod is fitted with a second spring, which abuts against the bottom of the magnetic tile and always provides elastic force to the magnetic tile in the direction away from the chassis.

[0026] Furthermore, several pressure rods are fixed on the upper surface of the magnetic tile disc;

[0027] The upper end of the pressure bar contacts the output end of the hydraulic press.

[0028] Furthermore, the bottom of the centering shaft is provided with several threaded holes;

[0029] Several through holes corresponding to the threaded holes are made on the chassis;

[0030] The screw passes through the through hole and is inserted into the threaded hole to fix the centering shaft on the chassis.

[0031] Furthermore, the bottom of the slide bar is provided with an internal threaded hole, and the screw passes through the limiting piece and is inserted into the internal threaded hole so that the limiting piece is fixed to the bottom of the slide bar.

[0032] The beneficial effect of this application is that it provides a simple and easy-to-operate tooling for attaching magnetic tiles to a motor. Attached Figure Description

[0033] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0034] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0035] In the attached diagram:

[0036] Figure 1 This is an overall schematic diagram based on an embodiment of this application;

[0037] Figure 2 This is a half-sectional view according to an embodiment of this application;

[0038] Figure 3 This is a structural schematic diagram of a part of the embodiment, mainly showing the magnetic tile disk and positioning disk structure;

[0039] Figure 4 yes Figure 2 Enlarged view of part A;

[0040] Figure 5 yes Figure 2 Enlarged view of part B;

[0041] Figure 6This is a structural schematic diagram of a part of the embodiment, mainly showing the guide rod structure.

[0042] Figure label:

[0043] 1. Chassis; 11. Guide hole; 12. Pressing rod; 13. Through hole;

[0044] 2. Guide rod; 21. Slider; 211. Sliding hole; 312. Step; 22. Limiting plate; 23. Second spring;

[0045] 3. Magnetic tile disc; 31. Mating hole; 32. Magnetic tile groove

[0046] 4. Positioning plate; 41. Positioning hole;

[0047] 5. Centering shaft; 51. Threaded hole; 52. Limiting groove; 53. Spring cavity; 54. Limiting hole;

[0048] 6. Screw;

[0049] 7. Limiting shaft; 71. Slide rod; 711. Limiting piece;

[0050] 8. The first spring;

[0051] a1. Rotor;

[0052] a2. Magnet tile. Detailed Implementation

[0053] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0054] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0055] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0056] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0057] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0058] A fixture for attaching magnetic tiles to a motor includes: a magnetic tile plate 3, a base plate 1, a guide rod 2, a centering shaft 5, and a limiting shaft 7;

[0059] Several guide rods 2 are fixed on the chassis 1, and several guide holes 11 corresponding to the guide rods 2 are opened on the magnetic tile 3. The guide rods 2 are inserted into the guide holes 11 so that the magnetic tile 3 slides along the axial direction of the guide rods 2. More specifically, a slider 21 is fixed on the surface of the magnetic tile 3 near the chassis 1, and the slider 21 is partially inserted into the guide holes 11. The slider 21 has a sliding hole 211 that is clearance-fitted with the guide rods 2. The slider 21 forms a step 312 at the bottom, and the surface of the step 312 is screwed to the bottom of the magnetic tile 3. A limiting plate 22 is fixed on the upper end of the guide rods 2, and the limiting plate 22 abuts against the upper end surface of the magnetic tile 3 so that the magnetic tile 3 is clamped between the limiting plate 22 and the slider 21.

[0060] A second spring 23 is sleeved on the guide rod 2, and the second spring 23 is fixedly connected to the bottom of the step 312, and always provides elastic force to the magnetic tile 3 in the direction away from the chassis 1; when the magnetic tile 3 is pressed by the extension end of the hydraulic press, the magnetic tile 3 moves downward and is reset under the elastic force of the second spring 23; more specifically, a number of pressing rods 12 are fixed on the upper surface of the magnetic tile 3; the upper end of the pressing rod 12 abuts against the output end of the hydraulic press.

[0061] A mating hole 31 is provided at the center of the magnetic tile disk 3, and a positioning disk 4 is fixed on the upper end surface of the magnetic tile disk 3. The positioning disk 4 is provided with a positioning hole 41 corresponding to the mating hole 31. More specifically, the rotor is placed in the mating hole 31 and is coaxially arranged with the mating hole 31 and the positioning hole 41. The surface of the magnetic tile disk 3 is provided with a number of magnetic tile grooves 32 for placing magnetic tiles. The number of magnetic tile grooves 32 is consistent with the number of magnetic tiles that the rotor needs to fit, and the width of the magnetic tile grooves 32 is the same as the width of the magnetic tiles. More specifically, the magnetic tile grooves 32 extend in the radial direction of the magnetic tile disk 3 and communicate with the mating hole 31, so that the magnetic tiles located in the magnetic tile grooves 32 can enter the mating hole 31.

[0062] More specifically, the upper part of the limiting shaft 7 is recessed to form a limiting hole 54. The rotor is inserted into the limiting hole 54 so that the side wall of the rotor is flush with the outer wall of the limiting shaft 7. The magnetic tile 3 and the rotor are pressed down at the same time, and the centering shaft 5 pushes out a layer of magnetic tiles. The pushed-out magnetic tiles are tightly wrapped on the rotor to complete the tooling.

[0063] The bottom of the centering shaft 5 has several threaded holes 51; the base 1 has several through holes 13 corresponding to the threaded holes 51; the screw 6 passes through the through holes 13 and is inserted into the threaded holes 51; so that the centering shaft 5 is fixed on the base 1; the end of the centering shaft 5 away from the base 1 is inserted into the mating hole 31 and abuts against the magnetic tile located in the mating hole; more specifically, the limiting shaft 7 is set on the centering shaft 5 and located in the mating hole; there is a gap between the side wall of the limiting shaft 7 and the inner wall of the mating hole, the gap being greater than the thickness of the magnetic tile and less than the thickness of the two magnetic tiles; the magnetic tile located in the mating hole is in contact with the outer wall of the limiting shaft 7, and the upper end of the centering shaft 5 only abuts against one magnetic tile that is in contact with the outer wall of the limiting shaft 7;

[0064] More specifically, the axially concave portion of the upper end face of the centering shaft 5 forms a limiting groove 52, and the limiting shaft 7 is inserted into the limiting groove 52 and located in the mating hole; it slides along the axial direction of the limiting groove 52, and the bottom of the limiting shaft 7 abuts against the bottom of the limiting groove 52, so that the limiting shaft 7 is limited in the axial direction; wherein, after the bottom of the limiting shaft 7 abuts against the bottom of the limiting groove 52, the upper end of the centering shaft 5 is flush with the upper end face of the limiting shaft 7.

[0065] More specifically, the concave portion of the centering shaft 5 near the chassis 1 forms a spring cavity 53, and the bottom of the limiting shaft 7 forms a slide rod 71, with part of the slide rod 71 inserted into the spring cavity 53. The end face of the slide rod 71 located in the spring cavity 53 has an internal threaded hole 51. A screw passes through the limiting piece 711 and is inserted into the internal threaded hole 51, so that the limiting piece 711 is fixed at the bottom of the slide rod 71. The limiting piece 711 abuts against the top wall of the spring cavity 53. One end of the first spring 8 is fixed to the bottom of the spring cavity 53, and the other end is fixed to the limiting piece 711, always providing the limiting shaft 7 with a spring force in the direction away from the chassis 1, so that the top of the limiting shaft 7 is higher than the magnetic tile. This ensures that after the limiting shaft 7 is reset, the magnetic tile will always be in close contact with the side wall of the limiting shaft 7.

[0066] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A motor magnet tile tooling, comprising: a base plate; characterized in that: the motor magnet tile tooling further comprises: a magnet tile disc, disposed opposite to the base plate, and a surface provided with a matching hole for installing a rotor; a guide rod, disposed on the base plate, for guiding the magnet tile disc to approach or move away from the base plate; a centering shaft, one end of which is fixedly arranged on the base plate, and the other end is slidably arranged in the matching hole; a limiting shaft, which is slidably arranged on the end of the centering shaft located in the matching hole; wherein the surface of the magnet tile disc forms a plurality of magnet tile grooves for installing magnet tiles, one end of the magnet tile groove is communicated with the matching hole; a reset structure is arranged between the side wall of the limiting shaft and the inner wall of the matching hole; the reset structure only contacts the magnet tile attached to the limiting shaft; the reset structure comprises a spring cavity formed by the recessed part of the end of the centering shaft close to the base plate, the bottom of the limiting shaft forms a sliding rod, and the sliding rod is partially inserted into the spring cavity; the end of the sliding rod inserted into the spring cavity is connected with a first spring; the first spring always gives the limiting shaft a spring force in the direction away from the base plate; the end surface of the sliding rod located in the spring cavity is fixedly provided with a limiting piece, and the limiting piece contacts the top wall of the spring cavity.

2. The motor magnet tile tooling according to claim 1, characterized in that: the end surface of the centering shaft is recessed in the axial direction to form a limiting groove, the limiting shaft is inserted into the limiting groove and slides along the axial direction of the limiting groove, and the bottom of the limiting shaft contacts the bottom of the limiting groove to limit the limiting shaft in the axial direction; wherein after the bottom of the limiting shaft contacts the bottom of the limiting groove, the upper end of the centering shaft is flush with the upper end surface of the limiting shaft.

3. The motor magnet tile tooling according to claim 1, characterized in that: the upper end of the limiting shaft is recessed to form a limiting hole for inserting the rotor.

4. The motor magnet tile tooling according to claim 1, characterized in that: the upper end surface of the magnet tile disc is fixedly provided with a positioning disc, and the positioning disc is provided with a positioning hole corresponding to the matching hole.

5. The motor magnet tile tooling according to claim 1, characterized in that: the magnet tile disc is provided with a plurality of guide holes for inserting the guide rod, and the guide rod is provided with two limiting plates in contact with the upper surface of the magnet tile disc; wherein a second spring is sleeved on the guide rod, and the second spring contacts the bottom of the magnet tile disc and always gives the magnet tile disc a spring force in the direction away from the base plate.

6. The motor magnet tile tooling according to claim 1, characterized in that: a plurality of pressing rods are fixedly arranged on the upper end surface of the magnet tile disc; the upper end of the pressing rod contacts the output end of a hydraulic machine.

7. The motor magnet tile tooling according to claim 1, characterized in that: a plurality of threaded holes are formed in the bottom of the centering shaft; a plurality of through holes corresponding to the threaded holes are formed in the base plate; a screw rod passes through the through hole and is inserted into the threaded hole, so that the centering shaft is fixedly arranged on the base plate.

8. The motor magnet tile tooling according to claim 1, characterized in that: an internal threaded hole is formed in the bottom of the sliding rod, and a screw is inserted into the internal threaded hole through the limiting piece, so that the limiting piece is fixedly arranged on the bottom of the sliding rod.

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