CN111864936A

CN111864936A - Permanent magnet motor

Info

Publication number: CN111864936A
Application number: CN201910350747.2A
Authority: CN
Inventors: 陈文君; 俞方俊; 高宏伟
Original assignee: Shanghai Anpu Mingzhi Automation Equipment Co ltd
Current assignee: Shanghai Anpu Mingzhi Automation Equipment Co ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-10-30

Abstract

The invention relates to a permanent magnet motor, which comprises a motor shell, a motor front end cover, a motor rear end cover, a rotating shaft, a stator, a rotor, a front bearing, a rear bearing, a corrugated gasket, an encoder, a motor connector and an encoder connector, wherein the rotor is sleeved on the rotating shaft; the stator cover outside the rotor, front bearing and rear bearing install at the pivot both ends, motor front end housing, motor rear end cap be connected with motor housing respectively, the motor connector install on motor housing, the encoder be connected with the encoder connector, the ripple packing ring install between front bearing and front end housing. Compared with the prior art, the invention has the advantages of simple process, no bearing clearance, high reliability and the like.

Description

Permanent magnet motor

Technical Field

The invention relates to the technical field of motors, in particular to a permanent magnet motor.

Background

The servo motor is widely applied to the industrial field at present, the existing servo motor is mostly an 8-pole motor tooth socket, and the torque of the tooth socket is large. The rotor magnetic steel needs to be staggered when being installed, so that the production process is complex. In addition, the motor bearing is fixed by using a fixed rear bearing, the front bearing is fixed by using a corrugated washer, and a gap between the bearings is large. The whole piece of insulation paper is used for insulation between the single stator lobes of the motor, and the process difficulty required for installing the insulation paper is high. The pin pressing line of the motor connector and the shell are connected to the ground through screws, so that the problems of poor ground connection and the like can be caused.

Disclosure of Invention

The present invention aims to overcome the above-mentioned drawbacks of the prior art and to provide a permanent magnet motor.

The purpose of the invention can be realized by the following technical scheme:

a permanent magnet motor comprises a motor shell, a motor front end cover, a motor rear end cover, a rotating shaft, a stator, a rotor, a front bearing, a rear bearing, a corrugated gasket, a coder, a motor connector and a coder connector, wherein the rotor is sleeved on the rotating shaft; the stator cover outside the rotor, front bearing and rear bearing install at the pivot both ends, motor front end housing, motor rear end cap be connected with motor housing respectively, the motor connector install on motor housing, the encoder be connected with the encoder connector, the ripple packing ring install between front bearing and front end housing.

Preferably, the stator include stator single lamella, inside insulating paper, enameled wire, skeleton and outside insulating paper, inside insulating paper install at the skeleton inboard, outside insulating paper install in the outside of skeleton, inside insulating paper and outside insulating paper encase the enameled wire, outside insulating paper establish at two adjacent stator single lamella paper wares.

Preferably, the inner insulating paper and the outer insulating paper are two independent insulating papers.

Preferably, the rotor is provided with magnetic steel, and the two ends of the magnetic steel are provided with a front balance block and a rear balance block.

Preferably, the magnetic steel is in-line type surface-mounted magnetic steel.

Preferably, the motor connector is a motor connector with a grounding elastic sheet.

Preferably, the motor connector and the motor casing are grounded together through a grounding elastic sheet.

Preferably, the grounding elastic sheet is connected with the motor connector through welding.

Compared with the prior art, the invention has the following advantages:

the process is simple: independent insulating paper is used between single lobes of the stator, and in addition, the magnetic steel arrangement adopts an in-line mode, so that the operation difficulty of the process is reduced.

II, no bearing clearance: the front bearing is fixed in the front end cover by using a corrugated gasket and glue, and the bearing clearance is eliminated.

Thirdly, the reliability is high: the grounding elastic sheet is connected with the motor connector in a welding mode, and the problems of poor grounding and the like are solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a portion of the stator of the present invention;

fig. 3 is a schematic structural view of the motor connector of the present invention.

As indicated by the reference numbers in fig. 1:

1. motor casing, 2, motor front end housing, 3, motor rear end housing, 4, pivot, 5, stator, 6, front bearing, 7, rear bearing, 8, ripple packing ring, 9, encoder, 10, motor connector, 11, encoder connector, 12, encoder rear end housing, 13, rotor, 14, preceding balancing piece, 15, back balancing piece.

As indicated by the reference numbers in fig. 2:

51 is a stator single lobe, 52 is internal insulation paper, 53 is an enameled wire, 54 is a framework, and 55 is external insulation paper;

as indicated by the reference numbers in fig. 3:

1 is a motor shell, 10 is a motor connector, and 101 is a grounding elastic sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

Examples

As shown in fig. 1, a permanent magnet motor includes a motor casing 1, a motor front end cover 2, a motor rear end cover 3, a rotating shaft 4, a stator 5, a rotor 13, a front bearing 6, a rear bearing 7, a corrugated washer 8, an encoder 9, a motor connector 10 and an encoder connector 11, wherein the rotor is sleeved on the rotating shaft 4; stator 5 cover on the rotor, front bearing 6 and rear bearing 7 install at 4 both ends of pivot, motor front end housing 2, motor rear end housing 3 be connected with motor housing 1 respectively, motor connector 10 install on motor housing 1, encoder 9 be connected with encoder connector 11, ripple packing ring 8 install between front bearing 6 and front end housing, the bearing clearance is blocked through the glue and the ripple packing ring of front bearing and is solved.

As shown in fig. 2, the stator 5 includes stator segments 51, inner insulating paper 52, an enamel wire 53, a framework 54 and outer insulating paper 55, the inner insulating paper 52 is installed inside the framework 54, the outer insulating paper 55 is installed outside the framework 54, the enamel wire 53 is enclosed by the inner insulating paper 52 and the outer insulating paper 55, and the outer insulating paper 55 is disposed between two adjacent stator segments 51. The inner insulating paper 52 and the outer insulating paper 55 are two independent insulating papers.

Rotor 13 on install rotor magnetic steel, rotor magnetic steel both ends install preceding balancing piece 14 and back balancing piece 15. The magnetic steel is in-line magnetic steel.

As shown in fig. 3, the motor connector 10 is a motor connector with a grounding spring 101. The motor connector 10 and the motor casing 1 are grounded together through the grounding elastic sheet 101. The grounding elastic sheet is connected with the motor connector 10 through welding.

The main innovation points of the invention are as follows:

1. and a clearance bearing and eliminating structure.

The front bearing is clamped by a corrugated washer and fixed in the front end cover by glue.

2. And independent insulating paper is used for insulation between the single stator lobes.

And the stator single lobes are installed between the stator single lobes by using independent insulating paper.

3. The magnetic steels are arranged in line.

An inline magnetic steel is used.

4. The motor connector is grounded.

And after the grounding elastic sheet is welded with the connector, the grounding elastic sheet is grounded with the motor shell.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A permanent magnet motor comprises a motor shell (1), a motor front end cover (2), a motor rear end cover (3), a rotating shaft (4), a stator (5), a rotor (13), a front bearing (6), a rear bearing (7), a corrugated washer (8), a coder (9), a motor connector (10) and a coder connector (11), wherein the rotor (13) is sleeved on the rotating shaft (4); stator (5) cover outside the rotor, front bearing (6) and rear bearing (7) install at pivot (4) both ends, motor front end housing (2), motor rear end housing (3) be connected with motor housing (1) respectively, motor connector (10) install on motor housing (1), encoder (9) be connected with encoder connector (11), its characterized in that, ripple packing ring (8) install between front bearing (6) and front end housing.

2. A permanent magnet machine according to claim 1, characterized in that the stator (5) comprises stator segments (51), inner insulation paper (52), enameled wire (53), a framework (54) and outer insulation paper (55), the inner insulation paper (52) is installed inside the framework (54), the outer insulation paper (55) is installed outside the framework (54), the inner insulation paper (52) and the outer insulation paper (55) enclose the enameled wire (53), and the outer insulation paper (55) is installed on two adjacent stator segments (51).

3. A permanent magnet machine according to claim 2, characterized in that the inner insulation paper (52) and the outer insulation paper (55) are two separate sheets of insulation paper.

4. A permanent magnet machine according to claim 1, characterized in that the rotor (13) is provided with magnetic steel, and the two ends of the magnetic steel are provided with a front balance weight (14) and a rear balance weight (15).

5. The permanent magnet motor according to claim 4, wherein the magnetic steel is an in-line surface-mounted magnetic steel.

6. A permanent magnet machine according to claim 1, characterized in that the machine connector (10) is a machine connector with grounding spring (101).

7. A permanent magnet motor according to claim 6, characterized in that the motor connector (10) and the motor housing (1) are commonly grounded through a grounding spring (101).

8. A permanent magnet machine according to claim 6, characterized in that the grounding spring is connected with the machine connector (10) by welding.

9. A permanent magnet machine according to claim 6, characterized in that the earth terminal of the machine connector (10) is connected to the machine housing (1) by welding.