Servo motor structure with magnetic pole fixing support

Abstract

The utility model discloses a servo motor structure with a magnetic pole fixing support. The servo motor structure specifically comprises a motor housing, a stator assembly and a rotor assembly, wherein the stator assembly and the rotor assembly are installed in the motor housing. The rotor assembly comprises a rotating shaft and a plurality of rotor magnetic poles, and the rotor magnetic poles are installed on the rotating shaft in a surrounding mode. The rotor assembly further comprises a magnetic pole support nested on the rotating shaft, and a plurality of clamping cavities used for clamping and fixing rotor magnetic poles are formed on the magnetic pole support. By arranging the magnetic pole support structure, the effect of fixing the rotor magnetic pole is achieved through the clamping cavity in the magnetic pole support in the assembling process of the servo motor; the mode of fixing the rotor magnetic pole through the clamping cavity is used for replacing a traditional glue fixing or other machining modes, and the effects of reducing machining procedures and improving machining efficiency in the assembling and machining process of the servo motor can be achieved; the purposes of reducing machining labor force and lowering machining cost are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of servo motors and relates to a servo motor structure with a magnetic pole fixing bracket. Background Art

[0002] Permanent magnet synchronous servo motor is a kind of AC permanent magnet servo motor. It generates magnetic field by adding permanent magnets on the rotor. Due to the inherent characteristics of permanent magnet materials, it no longer needs external energy to establish a strong permanent magnetic field in the space around it, which simplifies the motor structure and saves energy. It is widely used in the field of small and medium capacity high-precision transmission.

[0003] In the prior art, the permanent magnets of the servo motor are mainly fixed to the rotating shaft of the rotor by gluing; however, such a fixing method requires a large amount of processing labor and a long processing time during the motor assembly work, which can no longer meet the current motor industry's processing needs for efficient assembly production. Utility Model Content

[0004] In order to solve the implementation technical problems, the utility model adopts the following technical solutions:

[0005] A servo motor structure with a magnetic pole fixing bracket, the servo motor structure specifically comprises: a motor housing, and a stator assembly and a rotor assembly installed in the motor housing;

[0006] The rotor assembly includes: a rotating shaft and a plurality of rotor poles, each of which is mounted around the rotating shaft; the rotor assembly also includes: a pole bracket nested on the rotating shaft, and a plurality of clamping cavities are formed on the pole bracket for clamping and fixing the rotor poles.

[0007] As a further solution of the utility model: the magnetic pole support is composed of a support sleeve and two sets of support chucks;

[0008] The support sleeve is nested on the rotating shaft, and the support chucks are respectively sleeved on both ends of the support sleeve;

[0009] The inner end surface of the bracket chuck is formed with a plurality of clamping arms arranged around the bracket sleeve as the center of the circle, and a clamping groove capable of clamping the end of the pole bracket is formed between two adjacent clamping arms, and the two clamping grooves located opposite to each other on the two bracket chucks form a clamping cavity.

[0010] As a further solution of the utility model: the inner end surface and the outer end surface of the rotor pole are both arc surface structures.

[0011] As a further solution of the utility model: both sides of the lower end of the rotor pole are formed into inwardly inclined guide sliding surfaces.

[0012] The beneficial effects of the utility model are as follows: by setting up a magnetic pole bracket structure, the rotor magnetic pole fixing effect is achieved through the clamping cavity in the magnetic pole bracket during the servo motor assembly process; the method of fixing the rotor magnetic pole through the clamping cavity replaces the traditional glue fixing or other processing methods, which can achieve the effect of reducing the processing steps and improving the processing efficiency during the servo motor assembly process; the purpose of reducing processing labor and reducing processing costs is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] Figure 2 It is a structural schematic diagram of the magnetic pole bracket in the utility model.

[0015] Figure 3 It is a structural schematic diagram of the rotor magnetic poles in the utility model. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. It should be understood that the present application is not limited to the example embodiments disclosed herein. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] The utility model provides Figures 1 to 3In an embodiment of the utility model, a servo motor structure with a magnetic pole fixing bracket is provided, and the servo motor structure specifically comprises: a motor housing 1, a stator assembly 2 and a rotor assembly 3 installed in the motor housing 1;

[0020] The rotor assembly 3 includes: a rotating shaft 31 and a plurality of rotor poles 33 (permanent magnets), each rotor pole 33 is mounted around the rotating shaft 31; the rotor assembly 3 also includes: a pole bracket 32 ​​nested and mounted on the rotating shaft 31, and a plurality of clamping cavities 324 are formed on the pole bracket 32; during the assembly of the servo motor, the rotor pole 33 can be directly assembled into the clamping cavity 324, and the method of fixing the rotor pole 33 by the clamping cavity 324 replaces the traditional glue fixing or other processing methods; it can achieve the effect of reducing the processing steps and improving the processing efficiency during the assembly of the servo motor.

[0021] Specifically, the magnetic pole support 32 in this embodiment is composed of a support sleeve 325 and two sets of support chucks 321;

[0022] The support sleeve 325 is nested on the rotating shaft 31 and rotates synchronously with the rotating shaft 31; and the support chuck 321 is respectively mounted on the two ends of the support sleeve 325;

[0023] The inner end surface of the bracket chuck 321 is formed with a plurality of clamping arms 323 arranged around the bracket sleeve 325 as the center, and a clamping groove 322 capable of clamping the end of the pole bracket 32 ​​is formed between two adjacent clamping arms 323, and the two clamping grooves 322 located opposite to each other on the two bracket chucks 321 form a clamping cavity 324.

[0024] Furthermore, the inner end face and the outer end face of the rotor pole 33 are both arc-shaped structures; under this structural style of the rotor pole 33, when the rotor pole 33 is installed in the clamping cavity 324, the inner end face of the rotor pole 33 can be completely fitted to the outer wall of the bracket sleeve 325, thereby improving the installation tightness of the rotor pole 33 on the pole bracket 32.

[0025] When all the rotor poles 33 are installed on the pole bracket 32 ​​, each rotor pole 33 will cooperate to form a cylindrical structure, which can be fully installed and matched with the stator assembly 2 .

[0026] Furthermore, both sides of the lower end of the rotor pole 33 are formed as inwardly inclined guide surfaces 331, so that the lower end of the rotor pole 33 forms a narrowed structure. During the installation of the rotor pole 33, the narrowed front end structure can more conveniently insert the rotor pole 33 into the clamping cavity 324, thereby improving the processing efficiency in the assembly process.

[0027] Furthermore, in order to improve the precision of assembly processing, the outer diameter of the bearing in the stator assembly 2 / the outer diameter structure formed by each rotor pole 33 in the rotor assembly 3 needs to be ≥1.

[0028] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "including a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0029] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A servo motor structure with a magnetic pole fixing bracket, the servo motor structure specifically comprising: A motor housing and a stator assembly and a rotor assembly installed in the motor housing; The rotor assembly includes: a rotating shaft and a plurality of rotor poles, each of which is mounted around the rotating shaft; it is characterized in that the rotor assembly also includes: a pole bracket nested and mounted on the rotating shaft, and a plurality of clamping cavities are formed on the pole bracket for clamping and fixing the rotor poles.

2. A servo motor structure with a magnetic pole fixing bracket according to claim 1, characterized in that: The magnetic pole support is composed of a support sleeve and two sets of support chucks; The support sleeve is nested on the rotating shaft, and the support chucks are respectively sleeved on both ends of the support sleeve; The inner end surface of the bracket chuck is formed with a plurality of clamping arms arranged around the bracket sleeve as the center of the circle, and a clamping groove capable of clamping the end of the pole bracket is formed between two adjacent clamping arms, and the two clamping grooves located opposite to each other on the two bracket chucks form a clamping cavity.

3. The servo motor structure with a magnetic pole fixing bracket according to claim 1, characterized in that: The inner end surface and the outer end surface of the rotor pole are both arc surface structures.

4. The servo motor structure with a magnetic pole fixing bracket according to claim 1, characterized in that: Both sides of the lower end of the rotor magnetic pole are formed into inwardly inclined guide sliding surfaces.

5. The servo motor structure with a magnetic pole fixing bracket according to claim 1, characterized in that: The outer diameter of the bearing in the stator assembly / the outer diameter of the rotor assembly must be ≥1.

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