CN210629205U

CN210629205U - Servo motor stator core

Info

Publication number: CN210629205U
Application number: CN201921978673.9U
Authority: CN
Inventors: 欧阳江力; 李毅飞; 徐军
Original assignee: Shanghai Aerospace Intelligent Equipment Co ltd
Current assignee: Shanghai Aerospace Intelligent Equipment Co ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-05-26
Anticipated expiration: 2029-11-15

Abstract

The utility model discloses a servo motor stator core, it includes: the stator core supporting device comprises a supporting outer ring, a plurality of stator core tooth parts and a supporting inner ring, wherein the stator core tooth parts are sequentially arranged in the inner side of the supporting outer ring and are circumferentially distributed along the circumferential direction of the supporting outer ring; the supporting inner ring is arranged on the inner sides of the stator core tooth parts which are distributed circumferentially, and forms synchronous support for the inner sides of the stator core tooth parts. The utility model provides a stator core scheme can also effectively utilize production silicon steel sheet material when punching the piece when improving stator production efficiency, but also can guarantee that the high efficiency of series motor production comes reduce cost.

Description

Servo motor stator core

Technical Field

The utility model relates to an electric machine technology, concretely relates to stator technology of motor.

Background

With the development of permanent magnet materials, power electronics and other technologies, permanent magnet synchronous servo motors are more and more appeared in various automation equipment and equipment in special fields such as military industry.

With the rapid development of the automation industry, the market competition is more and more intense. Each terminal equipment manufacturer has higher and higher requirements for the service of the motor factory and the performance of the motor product, such as: short market service response time, high motor power density, and the like. These require motor manufacturers to develop and produce more and more efficiently, and motors have smaller and smaller volumes while ensuring performance.

Therefore, people are continuously increasing the optimized design on the magnetic circuit, structure and process of the motor. Generally, a servo motor adopts a block type stator and an automatic winding machine to improve the production efficiency of the stator, and the design and installation efficiency of a stator rack and a framework determine the production efficiency of the stator to a great extent; some existing stator cores and frameworks can have a continuous optimization space in the aspect of production efficiency;

referring to fig. 1, a schematic diagram of a conventional integral block type stator core is shown.

As can be seen from the figure, in the actual production of the integral block type stator core, each single rack 10 needs to be wound, then all the racks 20 required by one stator and subjected to wire winding are rounded, and finally welding is performed at the link of each rack to form the corresponding stator core 30; therefore, additional tooling equipment and welding equipment are needed, and the fixing cost is increased; in addition, the process and the tooling are difficult to ensure the consistency when the stator core is welded, so that the stress at different welding seams of the stator core is different, and the roundness of the stator core is influenced, thereby increasing the cogging torque and the torque fluctuation of the motor and reducing the use precision of the motor.

SUMMERY OF THE UTILITY MODEL

The stator core scheme for the servo motor is convenient to produce and aims to solve the problems of the stator core in the existing permanent magnet synchronous servo motor.

Therefore, the utility model aims to provide a servo motor stator core can effectively improve the production efficiency of electron and corresponding motor.

In order to achieve the above object, the utility model provides a servo motor stator core, include:

the supporting outer ring is in a hollow cylindrical shape;

the stator core tooth parts are sequentially arranged in the inner side of the support outer ring and are circumferentially distributed along the circumferential direction of the support outer ring;

the supporting inner ring is arranged on the inner sides of the stator core tooth parts which are distributed circumferentially, and forms synchronous support for the inner sides of the stator core tooth parts.

Furthermore, a plurality of arrangement grooves are uniformly arranged on the inner side of the support outer ring along the circumferential direction.

Further, the stator core tooth part is of a parallel tooth structure with partial pole shoes.

Further, stator core tooth portion includes rack, skeleton and winding, the rack is settled in the skeleton, the winding is around establishing on the rack.

Further, the skeleton includes first skeleton and the second skeleton of mutually supporting, first skeleton and the cooperation of second skeleton form the insulating layer in the rack outside.

The utility model provides a stator core scheme can also effectively utilize production silicon steel sheet material when punching the piece when improving stator production efficiency, but also can guarantee that the high efficiency of series motor production comes reduce cost.

Drawings

The invention is further described with reference to the following drawings and detailed description.

Fig. 1 is a schematic view showing a conventional integral block type stator core;

fig. 2 is a schematic structural view of a stator core in this example;

fig. 3 is a schematic structural view of a stator core tooth portion in this example;

fig. 4 is an exploded view of the teeth of the stator core in this example;

fig. 5 is a schematic structural view of the support outer ring in this example.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Referring to fig. 2, a schematic structural diagram of a stator core of a servo motor in the present example is shown.

The stator core 100 of the servo motor in the present embodiment is mainly formed by matching a supporting outer ring 110 with a plurality of stator core teeth 120 and a supporting inner ring 130 as internal components of the stator core.

A plurality of stator core tooth portions 120 are independently arranged relative to a supporting outer ring 110 and a supporting inner ring 130, the stator core tooth portions 120 are sequentially arranged in the supporting outer ring 110 at equal intervals, the stator core tooth portions are circumferentially distributed along the supporting outer ring in the circumferential direction, meanwhile, the supporting inner ring 130 is integrally arranged on the inner sides of the stator core tooth portions 120 which are circumferentially distributed, synchronous support is formed on the inner sides of the stator core tooth portions, therefore, the stator core tooth portions are matched with the supporting outer ring 110, the stator core tooth portions 120 are limited between the stator core tooth portions and the supporting outer ring, and a body of the servo motor stator core 100.

The following is a specific description of the implementation process of the stator core scheme of the servo motor.

As an example, the stator core teeth 120 include a parallel teeth structure with partial pole shoes, as shown in fig. 3 and 4, the stator core teeth 120 in this example are mainly formed by matching a rack 121, a first skeleton 122, a second skeleton 123, and a winding 124.

The rack 121 in the stator core tooth part 120 is used as a tooth part of the motor stator, and the rack 121 is separately and independently arranged relative to the support outer ring 110 and the support inner ring 130.

The rack 121 has an inverted T-shape, a square upper end portion, and a circular lower end portion for engaging with an outer side surface of the support inner ring 130 (as shown in fig. 2).

The rack 121 having such a structure is directly used as a stator tooth portion of the servo motor when the stator core tooth portion 120 is formed, so that a function of the servo motor stator is realized.

The first framework 122 and the second framework 123 in the stator core tooth part 120 are sleeved on the rack 121, and the first framework and the second framework are mutually matched to form an insulating layer between a motor stator winding and a core.

Specifically, the first frame 122 and the second frame 123 are integrally matched with the rack 121, and the first frame 122 and the second frame 123 are inserted into each other on the surface of the rack to form a structure capable of covering the outer side surface of the rack 121 in a matching manner, so as to serve as insulating layers of components such as a winding and the rack.

The first framework 122 and the second framework 123 with the structure are respectively sleeved from two ends of the rack 121 to the middle of the rack 121, and are respectively inserted and sleeved on two ends of the rack 121, and the first framework 122 and the second framework 123 are just connected in a matching way, so that a framework structure formed by matching the first framework 122 and the second framework 123 just covers the outer side face of the whole rack 121; thus, the inner side of the skeleton structure formed by the first skeleton 122 and the second skeleton 123 in a matching manner and the outer side of the rack 121 are combined to form an insulating layer between the winding and the iron core.

After the framework is sleeved on the rack, the winding 124 in the stator core tooth portion 120 is wound outside the framework through a winding machine and a winding tool, so as to form the stator core tooth portion 120 shown in fig. 3.

Furthermore, since the rack 121 of the stator core tooth portion 120 is integrally inverted "T" shaped, when the rack is inserted between the first frame 122 and the second frame 123 to form the stator core tooth portion 120, a first placement groove 125 is formed at the top of the stator core tooth portion 120 between the first frame 122 and the second frame 123, and the placement groove 125 is matched with the axial inner side surface of the support outer ring 110; furthermore, the stator core teeth 120 are formed by a first framework 122 and a second framework 123 which are mutually matched at the bottom ends to form a second placing groove 126, and the second placing groove 126 is matched with the axial outer side surface of the support inner ring 130.

The stator core tooth part 120 formed based on the scheme can utilize the material of the stamped sheet to the maximum extent when the stamped sheet is produced, and cannot cause material waste when the existing integral block type stator core punching die is produced; the iron core tooth part is wound after the framework is inserted, and the design requirements on a winding machine and a winding tool are low, so that the winding cost is low; and the whole rack with the winding occupies small space after winding, and is convenient for mass production and circulation.

With respect to the stator core teeth 120 of the parallel teeth structure, the support outer ring 110 in this example is a hollow cylinder as a whole (as shown in fig. 5).

The support outer ring 110 is integrally fitted with the seating grooves 125 of the stator core teeth 120, and a plurality of seating grooves 111 are circumferentially spaced on an inner side of the support outer ring 110 for fitting with the stator core teeth 120.

The support outer race 110 having such a structure is to be a core yoke portion of the present stator core 100 when combined with the stator core teeth 120.

The support inner ring 130 in this example serves to support several stator core teeth 120 distributed circumferentially from the inside.

The support inner ring 130 is also hollow and cylindrical as a whole, and the outer side surface thereof is fitted with the second seating groove 126 on the lower end surface of the stator core tooth portion 120.

With the structure, when the servo motor stator core 100 is actually produced, the supporting outer ring 110, the stator core tooth part 120 and the supporting inner ring 130 are arranged, and the moulds of the three parts are simple and convenient to design, so that the cost of the mould is reduced conveniently.

The present embodiment also provides a corresponding production method for the stator core 100 of the servo motor configured in the above-described scheme.

Referring to fig. 2-5, when the stator is assembled, only a tool for controlling the axial position needs to be placed at the end part of the iron core; firstly, parallel tooth parts (namely stator core tooth parts 120) wound with wires are sequentially inserted into the outer circle of the stator core (namely the supporting outer ring 110), and then the inner circle of the core (namely the supporting inner ring 130) is placed into the inner part of the core tooth parts through a tool. The whole stator core assembling process does not need procedures such as welding, the production flow efficiency is improved by colleagues guaranteeing the mechanical property of the motor stator, and welding equipment and labor cost can be saved.

Finally, the whole stator part is assembled and then put into the shell, and then the whole stator can be integrally and fixedly sealed through glue pouring, so that the heat dissipation capacity of the stator is improved while the size and the performance are ensured.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Servo motor stator core, its characterized in that includes:

the supporting outer ring is in a hollow cylindrical shape;

2. The stator core of a servo motor according to claim 1, wherein the inner side of the support outer ring is circumferentially provided with a plurality of seating grooves at regular intervals.

3. The servo motor stator core of claim 1, wherein the stator core teeth are parallel teeth structures with partial pole pieces.

4. The stator core for a servo motor according to claim 1 or 3, wherein the stator core teeth portion comprises a rack, a bobbin, and a winding, the rack being disposed in the bobbin, the winding being wound on the rack.

5. The stator core of the servo motor according to claim 4, wherein the bobbin comprises a first bobbin and a second bobbin which are matched with each other, and the first bobbin and the second bobbin are matched with each other to form an insulating layer outside the rack.