CN215772710U

CN215772710U - Servo motor rotor

Info

Publication number: CN215772710U
Application number: CN202122097529.8U
Authority: CN
Inventors: 黄勇军; 朱少武
Original assignee: Zhuhai Jili Motor Technology Co ltd
Current assignee: Zhuhai Jili Motor Technology Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-02-08
Anticipated expiration: 2031-09-01

Abstract

The utility model relates to a servo motor rotor which comprises a rotor shaft and a rotor core, wherein the rotor core is fixedly arranged in the middle of the rotor shaft, N magnet blocks which are distributed according to an annular array are adhered to the outer side of the rotor core, and an anti-rust protective layer which wraps the surface part of the magnet block exposed out of the rotor core is arranged on each magnet block. The beneficial effects are that: the magnet piece is pasted on rotor core after directly magnetizing, then forms rust-resistant protective layer after magnet piece surface coating with carbon-carbon resin bakes, reduces the electroplating process of magnet piece, reduces environmental pollution, avoids the magnet piece loss, is favorable to guaranteeing that the quality and the unanimous accord with the requirement of size of magnet piece.

Description

Servo motor rotor

Technical Field

The utility model relates to the field of servo motors, in particular to a servo motor rotor.

Background

The rotor magnet of the servo motor is generally plated with zinc or nickel and then adhered to a rotor core, and the following problems exist:

1. the magnet is galvanized or nickel-plated for rust prevention, and great pollution is caused to the environment in the electroplating process;

2. in the electroplating process of the magnet, a certain amount of loss exists, and the quality and the size of the magnet can not meet the requirements;

3. the electroplated layer is easy to fall off after long-term use, and the motor is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problems in the prior art and provides a servo motor rotor.

In order to achieve the technical purpose and achieve the technical effect, the utility model is realized by the following technical scheme:

the utility model provides a servo motor rotor, is fan annular magnet piece including rotor shaft, rotor core, cross section, rotor core fixed mounting is at rotor shaft middle part, the magnet piece that has N piece to arrange according to annular array is pasted in rotor core's the outside, be equipped with the rust-resistant protective layer that the magnet piece surface part that will expose outside rotor core wrapped up on the magnet piece.

Preferably, the antirust protective layer is formed by spraying fluorocarbon resin.

The outer side of the rotor core is provided with N installation grooves with sector-shaped cross sections, each installation groove is internally pasted with a magnet block, and the magnetic poles of any two adjacent magnet blocks are opposite.

And the antirust protective layers on the two adjacent magnet blocks are mutually adhered.

The thickness t of the antirust protective layers positioned on the outer side surface of the magnet block and two end surfaces of the magnet block is the same, and t is more than or equal to 0.1mm and less than or equal to 1 mm.

Wherein the number N of the magnet blocks is an even number.

The utility model has the beneficial effects that: the magnet piece is pasted on rotor core after directly magnetizing, then forms rust-resistant protective layer after magnet piece surface coating with carbon-carbon resin bakes, reduces the electroplating process of magnet piece, reduces environmental pollution, avoids the magnet piece loss, is favorable to guaranteeing that the quality and the unanimous accord with the requirement of size of magnet piece.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

FIG. 1 is a schematic structural view of a servo motor rotor after being longitudinally cut along a plane passing through a central axis of the servo motor rotor in the embodiment of the utility model;

FIG. 2 is a schematic structural view of a servo motor rotor in an embodiment of the present invention, after being cut transversely along a plane perpendicular to its central axis;

fig. 3 is a schematic structural view of an end face of a rotor core in an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 3, a servo motor rotor includes a rotor shaft 1, a rotor core 2, and magnet blocks 3 having sector-shaped cross sections, the magnet blocks 3 do not need to be electroplated and are directly magnetized, the rotor core 2 is fixedly mounted in the middle of the rotor shaft 1, 22 mounting slots 5 having sector-shaped cross sections are provided on the outer side of the rotor core 2, and the 22 mounting slots 5 are arranged on the outer side of the rotor core 2 according to an annular array, one magnet block 3 is adhered to each mounting slot 5, and the magnetic poles of any two adjacent magnet blocks 3 are opposite; the magnet block 3 is provided with a rust preventive protective layer 4 for covering the surface portion of the magnet block 3 exposed outside the rotor core 2.

Magnet piece 3 pastes on rotor core 2 after directly magnetizing, then forms rust-resistant protective layer 4 after 3 surface painting fluorocarbon resin bakes on magnet piece, reduces magnet piece 3's electroplating process, reduces environmental pollution, avoids magnet piece 3 loss, is favorable to guaranteeing magnet piece 3's quality and the unanimous conform to the requirements of size.

The anti-rust protective layers 4 on the two adjacent magnet blocks 3 are mutually adhered together, so that the adjacent magnet blocks 3 are adhered, and the firmness of the magnet blocks 3 adhered to the rotor core 2 is indirectly increased.

The thickness t of the antirust protective layers 4 positioned on the outer side surface of the magnet block 3 and two end surfaces of the magnet block 3 is the same, and t is more than or equal to 0.1mm and less than or equal to 1 mm. The uniform thickness is favorable for ensuring the coaxiality of the center of gravity of the servo motor rotor and the central shaft of the servo motor rotor, and further the dynamic balance of the servo motor rotor is improved.

In the specific production, a magnet without an electroplated (antirust coating) is firstly filled with strong magnetism, the outer side of a rotor core of the motor is coated with a layer of glue, the glue is adhered to the outer side of the rotor core according to the N-level and S-level pairing sequence, the rotor core is placed into an oven, the magnet is taken out after being heated to 120 ℃ for heat preservation for 3 hours, a layer of fluorocarbon resin is uniformly sprayed after the normal temperature (the coating material generally adopts fluorocarbon resin liquid and then is heated for accelerated curing), the magnet is placed into the oven at the normal temperature or is taken out after being heated to 100 ℃ for heat preservation for 2 hours, and a layer of antirust protective film is formed and is used for the production of the servo motor.

In the embodiment, the magnet with electroplated surface is not used, so that the great pollution to the environment caused by the electroplating process is reduced; because the magnet does not need to be electroplated, the loss in the electroplating process is avoided, and the quality stability of the magnet and the reduction of the error of the overall dimension are facilitated; the fluorocarbon resin used in the embodiment can be cured at normal temperature, and is not influenced by the magnet being not charged, when the technical scheme is used for magnet pasting, the pasting agent for the magnet is used for pasting the magnet on the metal surface of the magnet and the iron, so that the pasting effect is much better, and the magnet pasting device is suitable for all use modes (such as insertion fixing and pasting fixing) of the magnet.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.

Claims

1. A servo motor rotor characterized in that: be fan annular magnet piece including rotor shaft, rotor core, cross section, rotor core fixed mounting is at rotor shaft middle part, the magnet piece that has N pieces to arrange according to annular array is pasted in rotor core's the outside, be equipped with the rust-resistant protective layer that the magnet piece surface part that will expose outside rotor core wrapped up on the magnet piece.

2. A servo motor rotor according to claim 1, wherein: the outer side of the rotor core is provided with N installation grooves with sector-shaped cross sections, each installation groove is internally pasted with a magnet block, and the magnetic poles of any two adjacent magnet blocks are opposite.

3. A servo motor rotor according to claim 1, wherein: and the antirust protective layers on two adjacent magnet blocks are mutually adhered.

4. A servo motor rotor according to claim 1, wherein: the thickness t of the antirust protective layers positioned on the outer side surface of the magnet block and the two end surfaces of the magnet block is the same, and t is more than or equal to 0.1mm and less than or equal to 1 mm.

5. A servo motor rotor according to claim 1, wherein: the number N of the magnet blocks is an even number.

6. A servo motor rotor according to claim 1, wherein: the antirust protective layer is formed by spraying fluorocarbon resin.