Rotor punching sheet structure

Abstract

The utility model relates to a rotor punching sheet structure, and relates to the technical field of rotor punching sheets, the rotor punching sheet structure comprises a rotor main body, a plurality of damping winding grooves I and a plurality of damping winding grooves II, the damping winding grooves I and the damping winding grooves II are arranged on the rotor main body, the damping winding grooves I are in an open state, the damping winding grooves II are in a closed state, and the damping winding grooves I and the damping winding grooves II are arranged in a single polar distance range. Comprising at least one damping winding groove I and a damping winding groove II. According to the invention, in a single polar distance range, the damping winding slots I in the open state and the damping winding slots II in the closed state exist at the same time, so that the open state and the closed state exist at the same time, the energy efficiency, the stability and the production efficiency of the motor are improved, and the vibration phenomenon is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of rotor laminations, in particular to a rotor lamination structure. BACKGROUND

[0002] A core component of a permanent magnet motor is a rotor, which is composed of a plurality of stacked rotor laminations.

[0003] A damping winding slot is formed on the rotor lamination, and there are two cases of the damping winding slot. One is that a plurality of damping winding slots in one pole pitch range are in a closed state. In this structure, there is a magnetic flux path between adjacent poles in the main magnetic flux path, and part of the magnetic flux emitted by the permanent magnet will form leakage magnetic flux through the magnetic flux path between adjacent poles, thereby greatly reducing the main magnetic flux in the air gap, reducing the efficiency of the motor. The other is that a plurality of damping winding slots in one pole pitch range are open. In this structure, there is no magnetic flux path between adjacent poles in the main magnetic flux path, thereby greatly increasing the main magnetic flux in the air gap. However, since all the damping winding slots are open structures, the stability during the starting process is poor and vibration is easy to occur. In addition, the open damping winding slots need to be continuously cut and machined during turning, the tool is easy to wear, the outer diameter size is easy to change, and the production efficiency is not high. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the efficiency, stability and production efficiency of the motor and reduce the occurrence of vibration, the application provides a rotor lamination structure.

[0005] The rotor lamination structure provided by the application adopts the following technical scheme:

[0006] The rotor lamination structure comprises a rotor body, a plurality of damping winding slots one and a plurality of damping winding slots two formed on the rotor body, the damping winding slots one are in an open state and the damping winding slots two are in a closed state, and in a single pole pitch range, at least one damping winding slot one and one damping winding slot two are included.

[0007] By adopting the above technical scheme, the damping winding slot one in an open state and the damping winding slot two in a closed state exist simultaneously in a single pole pitch range, so that the open and closed states exist simultaneously. For the air gap, the magnetic pole here is a continuous and smooth magnetic conductor, the magnetic force lines in the air gap are continuously and uniformly distributed along the outer circle, the influence of the tooth slot torque is sharply reduced, the starting is stable, the running vibration is good, the risk of tool wear is also reduced, and the production efficiency is improved.

[0008] The outer circle of the structure is mostly continuous silicon steel, and the same material is cut, so the tool wear is small, the outer circle size and shape are stable, the surface is smooth, the magnetic flux leakage is greatly reduced, the efficiency, stability and production efficiency of the motor are improved, the vibration phenomenon is reduced, the main magnetic flux in the air gap is increased, and the permanent magnet is effectively utilized.

[0009] Optionally, in a single pole pitch range, the number of the first damping winding slots is N, and the number of the second damping winding slots is A, and A>N.

[0010] According to the above technical scheme, the number of the first damping winding slots and the second damping winding slots is designed as needed, so that the efficiency, stability and production efficiency of the motor are better.

[0011] Optionally, the first damping winding slot is formed with an opening slot in open communication with the outer circle surface of the rotor body.

[0012] According to the above technical scheme, the opening state of the first damping winding slot is realized, and the efficiency, stability and production efficiency of the motor are further improved.

[0013] Optionally, each of the first damping winding slots is located between two adjacent second damping winding slots.

[0014] According to the above technical scheme, the first damping winding slots and the second damping winding slots are alternately arranged, so that the efficiency, stability and production efficiency of the motor are further improved.

[0015] Optionally, the opening slot is in communication with the first damping winding slot away from the rotor body center end, and the width of the first damping winding slot close to the rotor body center end is smaller than the width away from the rotor body center end and larger than the width of the opening slot.

[0016] According to the above technical scheme, the width of the first damping winding slot can better accommodate the damping winding, and the small width of the opening slot can limit the damping winding, improve the stability of the motor during operation, and reduce the processing amount of the opening slot during processing of the damping winding slot and the opening slot, so that the processing is more convenient, and the stability and production efficiency of the motor are further improved.

[0017] Optionally, the opening slot and the first damping winding slot and the rotor body outer circle surface connection are provided with an arc-shaped guide corner, and the first damping winding slot and the adjacent two side wall connection are provided with an arc-shaped protection corner.

[0018] By adopting the technical scheme, the design of the guide angle and the protection angle can better realize protection of the damping winding, and the guide angle and the protection angle can be more convenient for tool machining, thereby further improving motor stability and production efficiency.

[0019] Optionally, the plurality of damping winding slots one and the plurality of damping winding slots two are arranged around the rotor body center, and the angle between the damping winding slot one and the adjacent damping winding slot one or damping winding slot two and the angle between the damping winding slot two and the adjacent damping winding slot one or damping winding slot two are the same.

[0020] By adopting the technical scheme, the plurality of damping winding one and the plurality of damping winding slot two are uniformly distributed on the punching sheet, thereby improving the stability of the punching sheet and reducing the risk of vibration.

[0021] Optionally, the rotor body is provided with a plurality of permanent magnet slots around the rotor body center.

[0022] By adopting the technical scheme, the permanent magnet slot can realize heat dissipation of the punching sheet.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. By simultaneously existing the damping winding slot one in the open state and the damping winding slot two in the closed state within a single pole pitch range, the open and closed states exist at the same time, and for the air gap, the magnetic pole here is a continuous and smooth magnetic conductor, the magnetic force lines in the air gap are continuously and uniformly distributed along the outer circle, the tooth slot torque is sharply reduced, the starting is stable, the running vibration is good, and the risk of tool wear is also reduced, thereby improving the production efficiency.

[0025] 2. By the structure that the outer circle is mostly continuous silicon steel, when cutting and machining the same material, the tool wear is small, the outer circle size and shape are stable, the surface is smooth, the magnetic flux leakage is greatly reduced, the motor energy efficiency, stability and production efficiency are improved, the vibration phenomenon is reduced, the main magnetic flux in the air gap is increased, and the permanent magnet is effectively utilized. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a plan view of the punching sheet structure;

[0027] Figure 2 is Figure 1 is an enlarged view of part A in FIG. 1.

[0028] Reference signs: 1, rotor body; 11, damping winding slot one; 12, damping winding slot two; 13, open slot; 14, guide angle; 15, protection angle; 16, permanent magnet slot. DETAILED DESCRIPTION

[0029] The application is further described below in detail.

[0030] The application discloses a rotor lamination structure.

[0031] Referring to Figure 1 and Figure 2 , the rotor lamination structure comprises a rotor body 1, a plurality of damping winding grooves I 11 and a plurality of damping winding grooves II 12 formed on the rotor body 1, the damping winding grooves I 11 are in an open state and the damping winding grooves II 12 are in a closed state; in a single pole pitch range, at least one damping winding groove I 11 and one damping winding groove II 12 are included.

[0032] The plurality of damping winding grooves I 11 and the plurality of damping winding grooves II 12 are arranged in a circular central array around the rotor body 1, the plurality of damping winding grooves I 11 and the plurality of damping winding grooves II 12 are alternately arranged at intervals, the angle between the damping winding groove I 11 and the adjacent damping winding groove I 11 or damping winding groove II 12, and the angle between the damping winding groove II 12 and the adjacent damping winding groove I 11 or damping winding groove II 12 are all the same.

[0033] In a single pole pitch range, the number of damping winding grooves I 11 is N, the number of damping winding grooves II 12 is A, and A>N, A can be 5 and N can be 2, and the damping winding grooves I 11 are all located between two adjacent damping winding grooves II 12.

[0034] The damping winding grooves I 11 and the damping winding grooves II 12 are the same in structure, size and shape, and an open groove 13 is formed in the end of each damping winding groove I 11 away from the center of the rotor body 1 and communicates with the outer circular surface of the rotor body 1, so that the damping winding groove I 11 is in an open state; the width of the damping winding groove I 11 close to the center of the rotor body 1 is smaller than the width of the end away from the center of the rotor body 1 and larger than the width of the open groove 13.

[0035] An arc-shaped guide corner 14 is formed at the connection between the open groove 13 and the damping winding groove I 11 and the outer circular surface of the rotor body 1, and an arc-shaped protection corner 15 is formed at the connection between the two adjacent side walls in the damping winding groove I 11, a damping winding is arranged on the damping winding groove I 11 and the damping winding groove II 12, and the width of the open groove 13 is smaller than the width of the damping winding groove I 11, so as to position the damping winding, the guide corner 14 can better protect the damping winding relative to the sharp corner connection, and the guide corner 14 and the protection corner 15 can facilitate the machining of the cutter, so that the cutter machining is more smooth, and the production efficiency is improved.

[0036] A plurality of permanent magnet grooves 16 are formed on the rotor body 1 in a circular central array around the rotor body 1, and the permanent magnet grooves 16 penetrate the rotor body 1 along the axis of the rotor body 1.

[0037] The working principle of the embodiment of the present application is as follows:

[0038] A plurality of damping winding grooves one 11 and a plurality of damping winding grooves two 12 are alternately formed on the rotor body 1, and each damping winding groove one 11 is provided with an opening groove 13 to form an opening state, so that the opening and the closed state appear alternately. For the air gap, the magnetic pole here is a continuous smooth magnetic conductor, the magnetic force lines in the air gap are continuously and uniformly distributed along the outer circle, the tooth slot torque is sharply reduced, the starting is stable, the running vibration is good, and the stability during tool machining is improved, and the production efficiency is improved.

[0039] The damping winding is protected by the protection angle 15, so the stability of the rotor body 1 during operation is improved, and the arc-shaped guide angle 14 can facilitate tool machining, thereby improving the stability and production efficiency of the rotor body 1.

[0040] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A rotor lamination structure, characterized by: The rotor body (1), a plurality of damping winding slots one (11) and a plurality of damping winding slots two (12) are arranged on the rotor body (1), the damping winding slots one (11) are in an open state and the damping winding slots two (12) are in a closed state, and in a single pole pitch range, at least one damping winding slot one (11) and one damping winding slot two (12) are included.

2. A rotor lamination structure according to claim 1, characterized in that: In a single pole pitch range, the number of damping winding slots one (11) is N, and the number of damping winding slots two (12) is A, A>N.

3. A rotor lamination structure according to claim 1, wherein: The damping winding slot one (11) is formed with an opening slot (13) which is in communication with the outer circular surface of the rotor body (1) to form an open state.

4. A rotor lamination structure according to claim 3, wherein: Each of the damping winding slots one (11) is located between two adjacent damping winding slots two (12).

5. A rotor lamination structure according to claim 4, wherein: The opening slot (13) is in communication with the end of the damping winding slot one (11) away from the center of the rotor body (1), and the width of the damping winding slot one (11) near the center of the rotor body (1) is smaller than the width of the damping winding slot one (11) away from the center of the rotor body (1) and greater than the width of the opening slot (13).

6. A rotor lamination structure according to claim 5, wherein: The opening slot (13) is in communication with the damping winding slot one (11) and the outer circular surface of the rotor body (1), and the connection part is provided with an arc-shaped guide corner (14), and the damping winding slot one (11) is provided with an arc-shaped protection corner (15) at the connection part of the two adjacent side walls.

7. A rotor lamination structure as claimed in claim 1, wherein: A plurality of damping winding slots one (11) and a plurality of damping winding slots two (12) are arranged around the center of the rotor body (1), the angle between the damping winding slot one (11) and the adjacent damping winding slot one (11) or damping winding slot two (12), and the angle between the damping winding slot two (12) and the adjacent damping winding slot one (11) or damping winding slot two (12) are the same.

8. A rotor lamination structure according to claim 1, wherein: The rotor body (1) is circumferentially arranged around the center of the rotor body (1) and is provided with a plurality of permanent magnet slots (16).

Images