CN205231875U

CN205231875U - Servo motor's rotor structure and servo motor

Info

Publication number: CN205231875U
Application number: CN201520999997.6U
Authority: CN
Inventors: 黄洪岳; 舒伟方; 卓达
Original assignee: XINAN NAIDA DRIVE TECHNOLOGY (SHANGHAI) CO LTD
Current assignee: Aneida drive technology (Shanghai) Co., Ltd
Priority date: 2015-12-04
Filing date: 2015-12-04
Publication date: 2016-05-11
Anticipated expiration: 2025-12-04

Abstract

The utility model provides a servo motor's rotor structure and servo motor, include: rotor core, rotor shaft, magnet steel, rotor core installs in the rotor shaft, rotor core's outer wall and the holding recess that the internal face was provided with edge circumference equipartition within a definite time are right, the holding recess is to comprising two holding recesses, each other is for the magnet steel of opposite polarity to be provided with two in two holding recesses respectively. The utility model discloses utilizing the left stopper and the right stopper of holding recess both sides to fix a position the magnet steel, improving the installation accuracy of magnet steel, through the optimization to separating the magnetic bridge width, reduce magnetism when separating magnetism bridge crane tool intensity to interelectrode magnetic leakage satisfying, simultaneously, the arc surface forms the clearance that varies in magnet steel and the stator, is favorable to reducing the tooth's socket torque to reduce motor noise and vibration, improve the motor performance.

Description

The rotor structure of servomotor and servomotor

Technical field

The utility model relates to servomotor art, particularly, relates to rotor structure and the servomotor of servomotor.

Background technology

Rotor is as one of the important spare part of motor, and the quality of rotor structure directly affects the overall performance of motor.At present, the rotor structure in existing servomotor technology has two kinds: a kind of rotor structure comprises rotating shaft, rotor core, magnetic links; Another kind of rotor structure has added magnet steel protective device on the basis of the first rotor structure.

For the first rotor structure, magnet steel is attached to the outer surface of rotor core, not easily locate during installation, time-consuming, cause the manufacturing cost of product high, for high speed motor, magnet steel is subject to very large centrifugal action and easily causes magnet steel to fly away from rotor, cause the damage of motor, the rate of finished products of motor product cannot be ensured;

For the second rotor structure, be fixedly attached to magnet steel outside rotor core by adding some device, protective device not only takies the inter-air space between stators and rotators, limits the high-speed range of motor, and waste material, causes the raising of material cost.

Utility model content

For defect of the prior art, the purpose of this utility model is to provide a kind of rotor structure and servomotor of servomotor.

According to the rotor structure of a kind of servomotor that the utility model provides, comprising: rotor core, armature spindle, magnet steel;

Rotor core is installed on armature spindle;

Circumferentially uniform containing groove pair is provided with between the outside wall surface of described rotor core and internal face;

Described containing groove is formed by two containing grooves, is respectively arranged with the magnet steel of two opposite polarities each other in described two containing grooves.

Preferably, the cell wall of containing groove forms the first guide vane end stop, the second guide vane end stop; Magnet steel is stuck between the first guide vane end stop and the second guide vane end stop.

Preferably, be provided with every magnetic bridge between described two containing grooves, described two containing grooves are arranged symmetrically with about every magnetic bridge.

Preferably, described two each other opposite polarity magnet steel formed magnetic to pole, there is centre-to-centre spacing to the exterior arc surface center of the rotor core outside pole and the center of armature spindle in magnetic.

Preferably, the minimum range between two containing grooves is less than 0.5mm.

Preferably, the magnet steel of described two opposite polarities each other, with armature spindle center for the center of circle is distributed on rotor core.

According to a kind of servomotor that the utility model provides, comprise the rotor structure of above-mentioned servomotor.

Compared with prior art, the utility model has following beneficial effect:

1, in the utility model, magnet steel installation accuracy is high, and all there is rib magnet steel both sides and front and back end, can avoid the danger because centrifugal force magnet steel flies away from, and ensures motor product rate;

2, pass through the optimization every magnetic bridge in the utility model, reduce magnetic to the leakage field of interpolar, improve motor performance.

3, the decentraction arranging rotor outer surface and stator inner arc surface in the utility model makes the round-formed gap such as not in magnet steel and stator, reduces motor cogging torque, thus reduces the noise and vibration because cogging torque produces.

Accompanying drawing explanation

By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present utility model will become more obvious:

Fig. 1 is front view of the present utility model.

Fig. 2 is the rotor core structure figure in the utility model.

In figure:

1-rotor core

2-armature spindle

3-magnet steel

4-outside wall surface

5-internal face

6-containing groove

7-first guide vane end stop

8-second guide vane end stop

9-is every magnetic bridge

Embodiment

Below in conjunction with specific embodiment, the utility model is described in detail.Following examples will contribute to those skilled in the art and understand the utility model further, but not limit the utility model in any form.It should be pointed out that to those skilled in the art, without departing from the concept of the premise utility, some changes and improvements can also be made.These all belong to protection range of the present utility model.

Rotor core is installed on armature spindle;

Preferably, the cell wall of containing groove forms the first guide vane end stop, the second guide vane end stop; Magnet steel is stuck between the first guide vane end stop and the second guide vane end stop, improves installation accuracy.

Preferably, the minimum range between two containing grooves is less than 0.5mm.Particularly, its objective is the optimization every magnetic bridge width, at the satisfied magnetic that reduces while magnetic bridge mechanical strength to the leakage field of interpolar, meanwhile, magnet steel and stator inner arc surface form the gap such as not, are conducive to reducing cogging torque, thus reduce noise of motor and vibration, improve motor performance.

Above specific embodiment of the utility model is described.It is to be appreciated that the utility model is not limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes within the scope of the claims or revise, and this does not affect flesh and blood of the present utility model.When not conflicting, the feature in the embodiment of the application and embodiment can combine arbitrarily mutually.

Claims

1. a rotor structure for servomotor, is characterized in that, comprising: rotor core (1), armature spindle (2), magnet steel (3);

Rotor core is installed on armature spindle;

Circumferentially uniform containing groove pair is provided with between the outside wall surface (4) of described rotor core and internal face (5);

Described containing groove is formed by two containing grooves (6), is respectively arranged with the magnet steel of two opposite polarities each other in described two containing grooves.

2. the rotor structure of servomotor according to claim 1, is characterized in that, the cell wall of containing groove forms the first guide vane end stop (7), the second guide vane end stop (8); Magnet steel is stuck between the first guide vane end stop and the second guide vane end stop.

3. the rotor structure of servomotor according to claim 1, is characterized in that, is provided with every magnetic bridge (9) between described two containing grooves, and described two containing grooves are arranged symmetrically with about every magnetic bridge.

4. the rotor structure of servomotor according to claim 1, is characterized in that, described two each other opposite polarity magnet steel formed magnetic to pole, there is centre-to-centre spacing to the exterior arc surface center of the rotor core outside pole and the center of armature spindle in magnetic.

5. the rotor structure of servomotor according to claim 1, is characterized in that, the minimum range between two containing grooves is less than 0.5mm.

6. the rotor structure of servomotor according to claim 1, is characterized in that, the magnet steel of described two opposite polarities each other, with armature spindle center for the center of circle is distributed on rotor core.

7. a servomotor, is characterized in that, comprises the rotor structure of the servomotor according to any one of claim 1 to 6.