Staggered pole magnetic steel assembly tool

Abstract

The utility model provides a staggered pole magnetic steel assembly tool, which comprises a separation disc, a base and a plurality of separation strips, the plurality of separation strips are circularly arranged at equal intervals and are vertically arranged on the separation disc, the base is provided with a plurality of arc-shaped waist-shaped holes which are in one-to-one correspondence with the plurality of separation strips, and the arc-shaped waist-shaped holes are communicated with the separation disc. The base is movably arranged on the separation disc in the mode that the separation strips penetrate through the corresponding arc-shaped kidney-shaped holes respectively, the separation strips can move in the corresponding arc-shaped kidney-shaped holes along the arc-shaped kidney-shaped holes, each separation strip comprises an upper narrow section and a lower wide section which are sequentially connected, and the transverse width of the upper narrow section is smaller than that of the lower wide section. According to the utility model, staggered-pole magnetic steel installation can be realized, and the manufacturing efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, and in particular relates to a jig for assembling misaligned magnets. Background Technology

[0002] Surface-mounted permanent magnet motors with external rotors on the market consist mainly of a rotor core and magnets. The rotor core is a ring-shaped steel ring, and the magnets have both N and S polarities. They are thin, eccentrically shaped plates with inner and outer arcs. Using specialized assembly fixtures, the N and S pole magnets can be evenly installed on the inner ring of the rotor core, with the two sections of magnets of the same pole flush on both sides. This magnet installation structure is called a "straight-pole magnet rotor." Figure 1 As shown. This installation process is relatively simple and has high production efficiency, but the air gap magnetic field waveform of the motor is poor, resulting in large torque fluctuations and high noise. Currently, there are two methods to solve the above problems. The first is to optimize the air gap magnetic field through eccentric magnet design, but the improvement effect is limited. The second is to use a "staggered pole magnet rotor", that is, each magnetic pole is divided into two segments of the same pole magnet, and the two segments of magnet under each pole are staggered at a certain angle. However, the existing magnet assembly tooling can only be used to manufacture surface-mount permanent magnet motors with "straight pole magnet rotor" schemes, and cannot realize the staggered pole magnet installation of "staggered pole magnet rotor". It can only be adjusted manually, resulting in low manufacturing efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a tooling for assembling misaligned magnets, which can realize the installation of misaligned magnets and improve manufacturing efficiency.

[0004] This utility model is achieved through the following technical solution:

[0005] A jig for assembling staggered-pole magnets includes a partition plate, a base, and multiple partition strips. The partition strips are arranged in a circular pattern with equal spacing and are vertically mounted on the partition plate. The base has multiple arc-shaped holes that correspond one-to-one with the partition strips. The base is movably mounted on the partition plate by passing each partition strip through its corresponding arc-shaped hole. Each partition strip can move along the arc-shaped hole within its corresponding arc-shaped hole. Each partition strip includes an upper narrow section and a lower wide section connected in sequence. The lateral width of the upper narrow section is smaller than the lateral width of the lower wide section.

[0006] Furthermore, the outer circumference of the separator plate is provided with a first protrusion, and the outer circumference of the base is provided with a second protrusion.

[0007] Furthermore, the dividing plate is provided with a plurality of first hollow holes, and the base is provided with a plurality of second hollow holes.

[0008] Furthermore, the partition plate has a first through hole at its center, and the base has a second through hole at its center.

[0009] Furthermore, the side edges of the separator are rounded.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: by designing a separator with an upper narrow section and a lower wide section, the relative height position of the base can be accurately positioned, thereby precisely defining the height position of the magnet. Furthermore, each separator can move along the corresponding arc-shaped waist-shaped hole to adjust the relative position of the two sections of magnet, realizing the staggered installation of the magnets, thereby creating a "staggered magnet rotor". This greatly reduces the peak-to-peak value of the motor torque fluctuation, significantly weakens vibration noise, reduces the harmonic content of the generated voltage, thereby reducing the loss of the power generation line and improving the current quality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the assembly tooling for the misaligned magnets of this utility model;

[0012] Figure 2 This is a schematic diagram of the partition plate and partition strip in the assembly tooling for the staggered pole magnets of this utility model;

[0013] Figure 3 This is a schematic diagram of the base structure in the misaligned magnet assembly tooling of this utility model;

[0014] Figure 4 This is a schematic diagram of the assembly tooling for the misaligned magnets of this utility model, showing the installation of the first section of the magnet.

[0015] Figure 5 This is a schematic diagram of the assembly tooling for the misaligned magnets of this utility model, showing the installation of the second section of the magnet.

[0016] In the diagram, 1-separator plate, 11-first hollow hole, 12-first through hole, 2-base, 21-arc waist-shaped hole, 22-second hollow hole, 23-second through hole, 3-separator strip, 31-upper narrow section, 32-lower wide section, 4-first protrusion, 5-second protrusion, 6-rotor core, 7-first section magnet, 8-second section magnet. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They 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. Therefore, they should not be construed as limitations on this utility model.

[0022] Please see Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the assembly tooling for the misaligned magnets of this utility model. Figure 2 This is a schematic diagram of the separator plate and separator strip in the assembly tooling for the staggered pole magnets of this utility model. Figure 3This is a schematic diagram of the base structure in the misaligned magnet assembly fixture of this utility model. A misaligned magnet assembly fixture includes a partition plate 1, a base 2, and multiple partition strips 3. The multiple partition strips 3 are arranged in a circular pattern at equal intervals and are vertically mounted on the partition plate 1. The base 2 has multiple arc-shaped waist-shaped holes 21 corresponding to the multiple partition strips 3. The base 2 is movably mounted on the partition plate 1 by each partition strip 3 passing through its corresponding arc-shaped waist-shaped hole 21. Each partition strip 3 can move along the arc-shaped waist-shaped hole 21 within its corresponding arc-shaped waist-shaped hole 21. Each partition strip 3 includes an upper narrow section 31 and a lower wide section 32 connected in sequence. The lateral width of the upper narrow section 31 is smaller than the lateral width of the lower wide section 32.

[0023] The following is a brief description of the usage process of the misaligned magnet assembly tooling of this utility model:

[0024] Please combine Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the assembly tooling for the misaligned magnets of this utility model, showing the installation of the first section of the magnet. Figure 5 This is a schematic diagram of the installation of the second section of magnet using the staggered pole magnet assembly fixture of this utility model. The arc-shaped waist-shaped holes 21 on the base 2 are passed through the corresponding partition strips 3, so that the base 2 is in contact with the partition plate 1. The side of the partition strip 3 with its upper narrow section 31 and lower wide section 32 aligned with each other is moved until it is in contact with one end of the corresponding arc-shaped waist-shaped hole 21. Then, the rotor core 6 is fitted onto the outside of the multiple partition strips 3 and placed on the base 2. At this point, based on the intervals of the multiple upper narrow sections 31, the magnet can be placed in the space between two adjacent upper narrow sections 31 and installed on the rotor core 6, completing the installation of the first section of magnet 7 for each pole. Figure 4 As shown. Then, the height of the base 2 and the rotor core 6 is raised, so that the upper narrow section 31 is disengaged from the first section of magnet 7, and the bottom of the upper narrow section 31 is located in the arc-shaped waist-shaped hole 21. Then, the separator plate 1 is rotated so that the upper narrow section 31 moves to the other end of the corresponding arc-shaped waist-shaped hole 21. At this time, the base 2 is placed on top of the lower wide section 32. Then, based on the interval of multiple upper narrow sections 31, the magnet can be placed in the space between two adjacent upper narrow sections 31 and installed on the rotor core 6, completing the installation of the second section of magnet 8 for each pole, as shown. Figure 5 As shown. Finally, the misaligned magnet assembly fixture of this utility model is disassembled, completing the manufacturing of the "misaligned magnet rotor". The misaligned magnet assembly fixture of this utility model can realize the misaligned installation of magnets, which greatly reduces the peak-to-peak value of motor torque fluctuation, significantly weakens vibration noise, reduces the harmonic content of generator voltage, thereby reducing generator line loss and improving current quality.

[0025] In one embodiment, a first protrusion 4 is provided around the outer circumference of the partition disk 1, and a second protrusion 5 is provided around the outer circumference of the base 2. The first protrusion 4 on the partition disk 1 can position the base 2, and the second protrusion 5 on the base 2 can position the rotor core 6, so that the three circular workpieces, the partition disk 1, the base 2 and the rotor core 6, are concentric.

[0026] In one embodiment, the separator plate 1 has multiple first perforated holes 11, and the base 2 has multiple second perforated holes 22. This arrangement can reduce the weight of the separator plate 1 and the base 2, making operation easier.

[0027] In one embodiment, the partition plate 1 has a first through hole 12 at its center, and the base 2 has a second through hole 23 at its center. The base 2 and the partition plate 1 have a relative angle requirement. If necessary, the base 2 and the partition plate 1 can be secured by bolts passing through the first through hole 12 and the second through hole 23, followed by screw-on nuts, to prevent relative movement and angle deviation during operation. Multiple first perforated holes 11 can be spaced circumferentially along the first through hole 12, and multiple second perforated holes 22 can be spaced circumferentially along the second through hole 23.

[0028] In one embodiment, the side edges of the divider 3 are rounded. The rounded corners prevent the divider 3 from damaging the arc-shaped hole 21 during its movement within the arc-shaped hole 21, and also make the divider 3 more aesthetically pleasing.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A jig for assembling misaligned magnets, characterized in that, The device includes a partition plate, a base, and multiple partition strips. The partition strips are arranged in a circular pattern with equal spacing and are vertically mounted on the partition plate. The base has multiple arc-shaped holes that correspond one-to-one with the partition strips. The base is movably mounted on the partition plate by passing each partition strip through its corresponding arc-shaped hole. Each partition strip can move along the arc-shaped hole within its corresponding arc-shaped hole. Each partition strip includes an upper narrow section and a lower wide section connected in sequence. The lateral width of the upper narrow section is smaller than the lateral width of the lower wide section.

2. The assembly fixture for misaligned magnets according to claim 1, characterized in that, The outer circumference of the separator plate is provided with a first protrusion, and the outer circumference of the base is provided with a second protrusion.

3. The assembly fixture for misaligned magnets according to claim 1, characterized in that, The dividing plate has multiple first hollow holes, and the base has multiple second hollow holes.

4. The assembly fixture for misaligned magnets according to claim 1, characterized in that, The separator plate has a first through hole at its center, and the base has a second through hole at its center.

5. The assembly fixture for misaligned magnets according to claim 1, characterized in that, The side edges of the separator are rounded.

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