Permanent magnet motor rotor magnetic steel assembly tool

Abstract

The utility model provides a permanent magnet motor rotor magnetic steel assembly tool comprising a first assembly cylinder, and the inner circumferential wall of one end of the first assembly cylinder is provided with a first inner cylinder which extends towards the other end of the first assembly cylinder and is a first preset distance away from the other end of the first assembly cylinder; the inner circumferential wall of one end of the second assembling cylinder is provided with a second inner cylinder which extends towards the other end of the second assembling cylinder and is a second preset distance away from the other end of the second assembling cylinder; the first assembling cylinder and the second assembling cylinder are fixedly arranged on a rotating shaft of the permanent magnet motor in a sleeving mode through a first fastener and a second fastener respectively, the first inner cylinder is a third preset distance away from the second inner cylinder, and rotor magnetic steel is installed on the rotating shaft of the permanent magnet motor between the first inner cylinder and the second inner cylinder. The first inner cylinder and the second inner cylinder are used for supporting and limiting the two ends of the rotor magnetic steel. The rotor magnetic steel is supported and limited through the first inner cylinder and the second inner cylinder, and the magnetic steel is prevented from shifting or falling off in the assembling process, so that the assembling efficiency and stability of the rotor magnetic steel of the permanent magnet motor are ensured.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of motor assembly, in particular to a permanent magnet motor rotor magnetic steel assembly tool. BACKGROUND

[0002] The permanent magnet motor is a motor using permanent magnets to generate a magnetic field, and has the characteristics of simple structure, high efficiency, small size, light weight, small loss and high efficiency. Its development is closely related to the development of permanent magnet materials. From the original natural magnetite to the modern rare earth permanent magnet material, the application field of the permanent magnet motor is continuously expanded, covering multiple fields such as aerospace, national defense, industrial and agricultural production, and daily life.

[0003] In the assembly process of the permanent magnet motor rotor magnetic steel, the rotor core is installed on the rotating shaft of the permanent magnet motor, and the main magnetic steel and the induced magnetic steel are bonded to the rotor core to form the rotor magnetic steel. The same group of magnetic steels are closely attached, and the N and S polarities are staggered and distributed, and the relative positions of the polarities between the two groups of magnetic steels are required to be consistent, that is, the bonding requirement of the rotor magnetic steel to the magnetic steel is high, and the magnetic steel is prone to displacement or falling off, which will affect the assembly efficiency and the quality of the finished product of the permanent magnet motor. Therefore, in order to ensure the efficiency and stability of the assembly of the permanent magnet motor rotor magnetic steel, the application provides a permanent magnet motor rotor magnetic steel assembly tool. CONTENT OF THE INVENTION

[0004] The application provides a permanent magnet motor rotor magnetic steel assembly tool to solve the technical problems described in the background.

[0005] To solve the above technical problems, the application adopts the following technical solutions:

[0006] The application provides a permanent magnet motor rotor magnetic steel assembly tool, which comprises:

[0007] A first assembly cylinder is provided with a first inner cylinder extending to the other end thereof and being a first preset distance away from the other end thereof on the inner circumferential wall of one end thereof;

[0008] A second assembly cylinder is provided with a second inner cylinder extending to the other end thereof and being a second preset distance away from the other end thereof on the inner circumferential wall of one end thereof;

[0009] The first assembly cylinder and the second assembly cylinder are fixed on the rotating shaft of the permanent magnet motor by the first fastener and the second fastener respectively, the first inner cylinder is a third preset distance away from the second inner cylinder, the rotating shaft of the permanent magnet motor between the first inner cylinder and the second inner cylinder is provided with a rotor magnetic steel, and the first inner cylinder and the second inner cylinder are used for supporting and limiting the two ends of the rotor magnetic steel.

[0010] Optionally, a plurality of threaded holes are arranged on the outer circumferential wall of the rotating shaft of the permanent magnet motor at equal intervals in the circumferential direction, and the plurality of threaded holes are distributed in a circular manner.

[0011] The first assembly cylinder is provided with a plurality of through holes on the outer circumferential wall near one end thereof at equal intervals, and the plurality of through holes correspond to the plurality of threaded holes one by one.

[0012] The first fastener has a plurality of first fasteners, and the plurality of first fasteners correspond to the plurality of through holes one by one. One end of each first fastener penetrates through the corresponding through hole and extends into the threaded hole to fix the first assembly cylinder on the rotating shaft of the permanent magnet motor.

[0013] Optionally, a plurality of threaded through holes are arranged on the outer circumferential wall of the middle section of the second assembly cylinder at equal intervals in the circumferential direction, and the plurality of threaded through holes are distributed in a circular manner.

[0014] The second fastener has a plurality of second fasteners, and the plurality of second fasteners correspond to the plurality of threaded through holes one by one. Each second fastener penetrates through the corresponding threaded through hole and abuts against the outer circumferential wall of the rotating shaft of the permanent magnet motor to fix the second assembly cylinder on the rotating shaft of the permanent magnet motor.

[0015] Optionally, the length of the first assembly cylinder is 2.7-3.5 times the length of the second assembly cylinder.

[0016] Optionally, the first predetermined distance is 1.2-2 times the second predetermined distance.

[0017] Optionally, the outer diameter and the inner diameter of the first assembly cylinder are equal to the outer diameter and the inner diameter of the second assembly cylinder, respectively.

[0018] The inner diameter of the first inner cylinder is equal to the inner diameter of the second inner cylinder.

[0019] Optionally, the first assembly cylinder and the second assembly cylinder are both made of stainless steel.

[0020] Optionally, the first inner cylinder and the first assembly cylinder are integrally formed.

[0021] The second inner cylinder and the second assembly cylinder are integrally formed.

[0022] The permanent magnet motor rotor magnetic steel assembly tool provided by the application, the first assembly cylinder is fixed on the rotating shaft of the permanent magnet motor through the first fastener, the rotor magnetic steel is installed on the rotating shaft of the permanent magnet motor, and then the second assembly cylinder is fixed on the rotating shaft of the permanent magnet motor through the second fastener, and the two ends of the rotor magnetic steel installed on the rotating shaft of the permanent magnet motor are clamped and fixed between the first inner cylinder in the first assembly cylinder and the second inner cylinder in the second assembly cylinder, so that the first inner cylinder and the second inner cylinder support and limit the rotor magnetic steel, the displacement or falling of the magnetic steel in the assembly process is avoided, and therefore the efficiency and stability of the permanent magnet motor rotor magnetic steel assembly are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Figure 1 The first assembly cylinder provided by an embodiment of the present application is shown in the cross-sectional view.

[0025] Figure 2 The left view of the first assembly cylinder provided by an embodiment of the present application is shown.

[0026] Figure 3 The front view of the first assembly cylinder provided by an embodiment of the present application is shown.

[0027] Figure 4 The cross-sectional view of the first assembly cylinder provided by an embodiment of the present application is shown.

[0028] Figure 5 The right view of the second assembly cylinder provided by an embodiment of the present application is shown.

[0029] Figure 6 The front view of the second assembly cylinder provided by an embodiment of the present application is shown.

[0030] Figure 7 The cross-sectional view of the first assembly cylinder and the second assembly cylinder provided by an embodiment of the present application is shown, and the rotor magnetic steel is arranged on the rotating shaft of the permanent magnet motor between the first inner cylinder and the second inner cylinder.

[0031] In the figure: 100, first assembly cylinder; 101, first inner cylinder; 102, through hole; 200, second assembly cylinder; 201, second inner cylinder; 202, threaded through hole; 300, first fastener; 400, second fastener; 500, rotating shaft of permanent magnet motor; 600, rotor magnetic steel. DETAILED DESCRIPTION

[0032] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are described clearly and completely below. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0033] Reference Figures 1 to 7 The present application provides a permanent magnet motor rotor magnetic steel assembly tool, comprising:

[0034] A first assembly cylinder 100, an inner circumferential wall of one end of the first assembly cylinder 100 is provided with a first inner cylinder 101 extending to the other end and being a first preset distance (see L3 in the specific Figure 1 ) from the other end; wherein the first preset distance is only set to form a boss with a supporting effect in the first assembly cylinder 100, and the first preset distance can be set according to actual needs. Therefore, the present application does not make specific limitations here.

[0035] A second assembly cylinder 200, an inner circumferential wall of one end of the second assembly cylinder 200 is provided with a second inner cylinder 201 extending to the other end and being a second preset distance (see L4 in the specific Figure 4 ) from the other end; wherein the second preset distance is only set to form a boss with a supporting effect in the second assembly cylinder 200, and the second preset distance can be set according to actual needs. Therefore, the present application does not make specific limitations here.

[0036] Wherein the first assembly cylinder 100 and the second assembly cylinder 200 are fixedly sleeved on the rotating shaft 500 of the permanent magnet motor through the first fastener 300 and the second fastener 400 respectively, and the first inner cylinder 101 is a third preset distance from the second inner cylinder 201, the rotating shaft 500 of the permanent magnet motor between the first inner cylinder 101 and the second inner cylinder 201 is installed with a rotor magnetic steel 600, and the first inner cylinder 101 and the second inner cylinder 201 are used to support and limit both ends of the rotor magnetic steel 600. Wherein the first fastener 300 can be a screw, and the second fastener 400 can be a set screw, and the specific form of the first fastener 300 and the second fastener 400 can be set according to actual needs, and the present application does not make specific limitations here. In addition, after the curing process of the magnetic steel to be bonded on the rotor is completed, the rotor magnetic steel 600 is disassembled from the rotating shaft 500 of the permanent magnet motor.

[0037] The permanent magnet motor rotor magnetic steel assembly tool provided by the application fixes the first assembly cylinder 100 on the rotating shaft 500 of the permanent magnet motor through the first fastener 300, then installs the rotor magnetic steel 600 on the rotating shaft 500 of the permanent magnet motor, and then fixes the second assembly cylinder 200 on the rotating shaft 500 of the permanent magnet motor through the second fastener 400, so that the two ends of the rotor magnetic steel 600 installed on the rotating shaft 500 of the permanent magnet motor are clamped and fixed between the first inner cylinder 101 in the first assembly cylinder 100 and the second inner cylinder 201 in the second assembly cylinder 200, so as to realize the support and positioning of the end face and the peripheral surface of the rotor magnetic steel 600 through the boss formed by the first inner cylinder 101 and the boss formed by the second inner cylinder 201, thereby avoiding displacement or falling of the magnetic steel during assembly, and ensuring the efficiency and stability of the permanent magnet motor rotor magnetic steel assembly.

[0038] In some embodiments, referring to Figure 1 、 Figure 3 and Figure 7 , a plurality of threaded holes are arranged on the outer peripheral wall of the rotating shaft 500 of the permanent magnet motor in the application, and the plurality of threaded holes are distributed in a circular shape; wherein the number and diameter of the threaded holes can be set according to actual needs, and the application does not make specific limitations hereon. A plurality of through holes 102 are arranged on the outer peripheral wall of the first assembly cylinder 100 close to one end thereof at equal intervals, and the plurality of through holes 102 correspond to the plurality of threaded holes one by one; wherein in order to facilitate the fixing of the first assembly cylinder 100 on the rotating shaft 500 of the permanent magnet motor by the first fastener 300, the diameter of the through hole is greater than the diameter of the threaded hole.

[0039] Wherein the first fastener 300 has a plurality of first fasteners 300, and the plurality of first fasteners 300 correspond to the plurality of through holes 102 one by one, and one end of each first fastener 300 penetrates through the corresponding through hole 102 and extends into the threaded hole to fix the first assembly cylinder 100 on the rotating shaft 500 of the permanent magnet motor.

[0040] In the above embodiments, one end of the first fastener 300 penetrates through the through hole 102 and extends into the threaded hole in sequence to fix the first assembly cylinder 100 on the rotating shaft 500 of the permanent magnet motor, which is convenient to operate and easy to disassemble, and improves the fixing efficiency of the rotor magnetic steel 600.

[0041] In some embodiments, referring to Figure 4 and Figure 6 , a plurality of threaded through holes 202 are arranged on the outer peripheral wall of the middle section of the second assembly cylinder 200 in the application at equal intervals in the circumferential direction, and the plurality of threaded through holes 202 are distributed in a circular shape; wherein the number of threaded through holes 202 can be set according to actual needs, and the application does not make specific limitations hereon.

[0042] In addition, there are multiple second fasteners 400, and each of the multiple second fasteners 400 corresponds to a multiple threaded through holes 202. Each second fastener 400 passes through its corresponding threaded through hole 202 and abuts against the outer peripheral wall of the permanent magnet motor shaft 500 to fix the second assembly cylinder 200 on the permanent magnet motor shaft 500.

[0043] In the above embodiment, the second fastener 400 passes through the threaded through hole 202 and abuts against the outer peripheral wall of the permanent magnet motor shaft 500, thereby fixing the second assembly cylinder 200 on the permanent magnet motor shaft 500. The above method is convenient to operate and easy to disassemble, which improves the fixing efficiency of the rotor magnet 600.

[0044] In some embodiments, the length of the first assembly cylinder 100 in this application is 2.7 to 3.5 times the length of the second assembly cylinder 200. The length of the first assembly cylinder 100 is described in [reference needed]. Figure 1 L1 in the middle, and the length of the second assembly cylinder 200 is shown in the figure. Figure 4 L2 in the middle.

[0045] In the above embodiments, after the magnets are glued to the rotor core, the rotor magnets 600 need to be baked to ensure they adhere to the rotor core. During the actual baking process of the rotor core, the entire permanent magnet motor rotor magnet assembly fixture is upright (see details). Figure 7 To ensure the stability of the first assembly cylinder 100 in supporting and positioning the rotor core, and to prevent the rotor magnet 600 from touching the baking platform and affecting baking efficiency and quality, the length of the first assembly cylinder 100 needs to be greater than the length of the second assembly cylinder 200. Furthermore, to facilitate the processing of both the first and second assembly cylinders 100, their lengths are made a certain multiple of each other, typically 2.7 to 3.5 times the length of the second assembly cylinder 200. This not only facilitates processing but also allows the first assembly cylinder 100 to better support and position the rotor magnet 600, ensuring the bonding quality of the magnet to the rotor core. For example, the length of the first assembly cylinder 100 is 90 mm, while the length of the second assembly cylinder 200 is 30 mm, meaning the length of the first assembly cylinder 100 is three times the length of the second assembly cylinder 200. The ratio of the length of the first assembly cylinder 100 to the length of the second assembly cylinder 200 can be set according to actual needs, and this application does not impose any specific limitations on it.

[0046] In some embodiments, the first preset distance in this application is 1.2 to 2 times the second preset distance. The first preset distance and the second preset distance are respectively referred to... Figure 1 L3 andFigure 4 L4 in the middle.

[0047] In the above embodiments, the first preset distance is to ensure that the first inner cylinder 101 inside the first assembly cylinder 100 forms a boss of a certain length within the first assembly cylinder 100, and the second preset distance is to ensure that the second inner cylinder 201 inside the second assembly cylinder 200 forms a boss of a certain length within the second assembly cylinder 200. The purpose is to ensure that the bosses formed by the first inner cylinder 101 inside the first assembly cylinder 100 and the bosses formed by the second inner cylinder 201 inside the second assembly cylinder 200 cooperate to effectively clamp and fix the two ends of the rotor magnet 600. The values ​​of the first preset distance and the second preset distance both depend on the distance between the magnets provided on the rotor core and the two ends of the rotor core (see...). Figure 7 Furthermore, the first preset distance must be a certain multiple of the second preset distance. For example, the first preset distance is 11mm and the second preset distance is 5.5mm, that is, the first preset distance is twice the second preset distance. The multiple between the first preset distance and the second preset distance can be set according to actual needs, but this application does not impose specific limitations on it.

[0048] In some embodiments, the outer diameter and inner diameter of the first assembly cylinder 100 in this application are equal to the outer diameter and inner diameter of the second assembly cylinder 200, respectively; wherein, the outer diameter and inner diameter of the first assembly cylinder 100 and the outer diameter and inner diameter of the second assembly cylinder 200 can be set according to actual needs, and are not specifically limited herein. Furthermore, the outer diameter and inner diameter of the first assembly cylinder 100 are respectively referred to... Figure 1 d1 and d2 in the figure, while the outer diameter and inner diameter of the second assembly cylinder 200 are respectively referred to in the figure. Figure 4 d6 and d5 in the text.

[0049] Furthermore, the inner diameter of the first inner cylinder 101 is equal to the inner diameter of the second inner cylinder 201. The inner diameters of both the first inner cylinder 101 and the second inner cylinder 201 can be set according to actual needs, and this application does not impose specific limitations on them. The inner diameters of the first inner cylinder 101 and the second inner cylinder 201 are respectively referred to... Figure 1 d3 and Figure 4 Figure 1 Figure 4 d4 in the middle.

[0050] In the above embodiment, the outer diameter and the inner diameter of the first assembly cylinder 100 are equal to the outer diameter and the inner diameter of the second assembly cylinder 200 respectively, and the inner diameter of the first inner cylinder 101 is equal to the inner diameter of the second inner cylinder 201, the purpose is to make the diameter and the inner diameter of the boss formed in the first assembly cylinder 100 equal to the diameter and the inner diameter of the boss formed in the second assembly cylinder 200, so as to realize the effective fixation of the boss in the first assembly cylinder 100 and the boss in the second assembly cylinder 200 to the rotor magnet steel 600 clamped and fixed between the first inner cylinder 101 and the second inner cylinder 201, and improve the fixation efficiency of the rotor magnet steel 600.

[0051] In some embodiments, the first assembly cylinder 100 and the second assembly cylinder 200 in the present application are both made of stainless steel.

[0052] In the above embodiment, the stainless steel has the advantages of excellent corrosion resistance, high strength, aesthetic appearance, environmental protection and economy, etc., therefore, the practical performance of the first assembly cylinder 100 and the second assembly cylinder 200 made of stainless steel is good, and the service life thereof is longer during the process of fixing the rotor magnet steel 600.

[0053] In some embodiments, the first inner cylinder 101 and the first assembly cylinder 100 in the present application are integrally formed; wherein the first inner cylinder 101 is connected with the first assembly cylinder 100 by the integrally formed manner, so that the stability of the connection between the first inner cylinder 101 and the first assembly cylinder 100 is higher and the processing is facilitated, thereby improving the processing efficiency of the first inner cylinder 101 and the first assembly cylinder 100.

[0054] In addition, the second inner cylinder 201 and the second assembly cylinder 200 are integrally formed, and the second inner cylinder 201 is connected with the second assembly cylinder 200 by the integrally formed manner, so that the stability of the connection between the second inner cylinder 201 and the second assembly cylinder 200 is higher and the processing is facilitated, thereby improving the processing efficiency of the second inner cylinder 201 and the second assembly cylinder 200.

[0055] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the above embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A permanent magnet motor rotor magnet assembly tool, characterized in that, The application relates to a first assembly cylinder (100) provided with a first inner cylinder (101) extending to a first preset distance from the other end of the first assembly cylinder (100); a second assembly cylinder (200) provided with a second inner cylinder (201) extending to a second preset distance from the other end of the second assembly cylinder (200); wherein the first assembly cylinder (100) and the second assembly cylinder (200) are fixed on the rotating shaft (500) of a permanent magnet motor through a first fastener (300) and a second fastener (400) respectively, the first inner cylinder (101) is away from the second inner cylinder (201) by a third preset distance, a rotor magnetic steel (600) is arranged on the rotating shaft (500) between the first inner cylinder (101) and the second inner cylinder (201), and the first inner cylinder (101) and the second inner cylinder (201) are used for supporting and limiting the two ends of the rotor magnetic steel (600). The outer circumferential wall of the rotating shaft (500) of the permanent magnet motor is provided with a plurality of thread holes which are circularly distributed at equal intervals; The outer circumferential wall of the first assembly cylinder (100) is provided with a plurality of through holes (102) at equal intervals near one end of the first assembly cylinder (100), and the plurality of through holes (102) correspond to the plurality of thread holes one by one; The first fastener (300) has a plurality of first fasteners (300) which correspond to the plurality of through holes (102) one by one, and one end of each first fastener (300) penetrates through the corresponding through hole (102) and extends into the thread hole to fix the first assembly cylinder (100) on the rotating shaft (500) of the permanent magnet motor.

2. The permanent magnet motor rotor magnet assembling tooling of claim 1, wherein, The outer circumferential wall of the middle section of the second assembly cylinder (200) is provided with a plurality of threaded through holes (202) at equal intervals in the circumferential direction, and the plurality of threaded through holes (202) are circularly distributed; The second fastener (400) has a plurality of second fasteners (400) which correspond to the plurality of threaded through holes (202) one by one, and each second fastener (400) penetrates through the corresponding threaded through hole (202) and abuts against the outer circumferential wall of the rotating shaft (500) of the permanent magnet motor to fix the second assembly cylinder (200) on the rotating shaft (500) of the permanent magnet motor. The length of the first assembly cylinder (100) is 2.7-3.5 times the length of the second assembly cylinder (200).

3. The permanent magnet motor rotor magnet assembling tooling of claim 1, wherein, The first preset distance is 1.2-2 times the second preset distance. The outer diameter and the inner diameter of the first assembly cylinder (100) are equal to the outer diameter and the inner diameter of the second assembly cylinder (200) respectively.

4. The permanent magnet motor rotor magnet assembling tooling of claim 1, wherein, The inner diameter of the first inner cylinder (101) is equal to the inner diameter of the second inner cylinder (201).

5. The permanent magnet motor rotor magnet assembling tooling of claim 2, wherein, The first assembly cylinder (100) and the second assembly cylinder (200) are made of stainless steel.

6. The permanent magnet motor rotor magnet assembling tooling of claim 3, wherein, The first inner cylinder (101) is integrally formed with the first assembly cylinder (100); The second inner cylinder (201) is integrally formed with the second assembly cylinder (200).

7. The permanent magnet motor rotor magnet assembling tooling of any one of claims 1 to 6, wherein, ​ 8. The permanent magnet motor rotor magnet assembling tooling of any one of claims 1 to 6, wherein, ​ ​

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