CN216056530U - Servo electric cylinder with embedded magnetic steel - Google Patents
Servo electric cylinder with embedded magnetic steel Download PDFInfo
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- CN216056530U CN216056530U CN202121985424.XU CN202121985424U CN216056530U CN 216056530 U CN216056530 U CN 216056530U CN 202121985424 U CN202121985424 U CN 202121985424U CN 216056530 U CN216056530 U CN 216056530U
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- rotor
- magnetic steel
- piston rod
- columnar
- electric cylinder
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Abstract
The utility model discloses a servo electric cylinder embedded with magnetic steel, and belongs to the technical field of electric cylinders. The motor rotor comprises a housing, a front end cover and a rear end cover, and further comprises an encoder, an integrated shaft, a stator, a rotor, a bearing, a check ring, a nut sleeve and a piston rod, wherein the encoder, the integrated shaft, the stator, the rotor, the bearing, the check ring, the nut sleeve and the piston rod are arranged in the housing, a plurality of columnar groove bodies are axially and equidistantly arranged inside the rotor and close to an outer ring of the rotor, a columnar magnetic steel is arranged in each columnar groove body, and the outer side face of the columnar magnetic steel is abutted to the inner side face of each columnar groove body. Through set up column cell body installation column magnet steel in rotor inside, with the magnet steel in the rotor is installed to the embedded formula, prevent effectively that the magnet steel from droing from the rotor, make the clearance between rotor and the stator diminish, reduced the volume, increased magnetoelectric conversion efficiency, improved production efficiency.
Description
Technical Field
The utility model relates to a servo electric cylinder embedded with magnetic steel, and belongs to the technical field of electric cylinders.
Background
The servo electric cylinder is a power base part gradually developed along with the development of modern industry, is one of linear electric actuators, is an integrated high-performance linear actuator, can convert the rotary motion of a motor into linear motion, and can realize the precise control of force, position and speed.
The existing servo electric cylinder is a magnetic steel surface-mounted rotor structure product, and the rotary motion of a motor is converted into linear motion through the relationship of a screw rod nut. The prior servo electric cylinder with the rotor structure has the problems of poor magnetic circuit performance, complex process, high cost, easy occurrence of magnetic steel falling and the like.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the utility model provides a servo electronic jar of embedded magnet steel, it has solved the problem that has the magnetic circuit performance poor, the technology is complicated, with high costs, and appears the magnet steel and drop easily among the prior art.
The technical problem to be solved by the utility model is realized by adopting the following technical scheme:
a servo electric cylinder with embedded magnetic steel comprises a casing, a front end cover, a rear end cover, an encoder, an integral shaft, a stator, a rotor, a bearing, a retainer ring, a nut sleeve and a piston rod, wherein the encoder, the integral shaft, the stator, the rotor, the bearing, the retainer ring, the nut sleeve and the piston rod are arranged in the casing,
a plurality of columnar groove bodies are axially arranged in the rotor at equal intervals close to the outer ring of the rotor, a columnar magnetic steel is arranged in each columnar groove body, and the outer side surface of each columnar magnetic steel is abutted to the inner side surface of each columnar groove body;
the casing comprises a front end and a rear end, a telescopic cavity is arranged at the front part in the casing, an installation cavity is arranged at the rear part in the casing, the front end cover is arranged at the front end, and the rear end cover is arranged at the rear end;
the integrated shaft is sequentially provided with an encoder, a rotor and a piston rod in a penetrating manner, wherein the outer side of the rotor is provided with a stator, two ends of the rotor are respectively provided with a bearing and a retainer ring, the bearing is arranged close to the rotor, the retainer ring is arranged far away from the rotor, the bearing is connected with the retainer ring, the integrated shaft is provided with a nut at the joint with the piston rod, and the piston rod is connected with the nut through a nut sleeve;
the one end that integrative axle was equipped with encoder and rotor is located the installation intracavity, and the flexible intracavity is located to the one end that is equipped with the piston rod, and the front end housing can be stretched out to the piston rod.
Preferably, the end face of the columnar groove body is arc-side circular.
Preferably, the integrative axle includes motor shaft and ball screw, and wherein, the motor shaft is connected with the ball screw integral type, and the installation intracavity is located to the motor shaft, and ball screw locates flexible intracavity, and encoder and rotor cover are located on the motor shaft, and the piston rod cover is located on ball screw.
Preferably, the inner side of the shell is provided with a guide rail, and the outer side of the nut sleeve is provided with a guide rail sliding groove, wherein the guide rail sliding groove can slide along the guide rail.
More preferably, the guide rail sliding groove is made of a POM high-molecular wear-resistant material.
The utility model has the beneficial effects that:
according to the servo electric cylinder with the embedded magnetic steel, the columnar groove bodies are arranged in the rotor to install the columnar magnetic steel, the magnetic steel is installed in the rotor in an embedded mode, the magnetic steel is effectively prevented from falling off from the rotor, a gap between the rotor and the stator is reduced, the size is reduced, the magnetoelectric conversion efficiency is increased, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic end view of a rotor according to the present invention.
Fig. 3 is a schematic view of the structure along a-a in fig. 1.
Fig. 4 is a schematic view of the structure along B-B in fig. 1.
In the figure: 1. a housing; 2. a front end cover; 3. a rear end cap; 4. an encoder; 5. an integral shaft; 6. a stator; 7. a rotor; 8. a bearing; 9. a retainer ring; 10. a nut; 11. a nut sleeve; 12. a piston rod; 13. a guide rail; 14. a guide rail chute; 15. columnar magnetic steel.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the utility model easy to understand, the utility model is further described with reference to the specific drawings.
The first embodiment is as follows:
referring to fig. 1-4, the present embodiment provides a magnetic steel embedded servo electric cylinder, including a casing 1, a front end cover 2, a rear end cover 3, and further including an encoder 4 disposed in the casing 1, a shaft 5, a stator 6, a rotor 7, a bearing 8, a retainer ring 9, a nut 10, a nut sleeve 11 and a piston rod 12, where ten cylindrical grooves are axially disposed at equal intervals near an outer ring of the rotor 7 inside the rotor 7, end faces of the cylindrical grooves are arc-edge long circles, and a figure enclosed by the end faces of the cylindrical grooves is circular, a cylindrical magnetic steel 15 is disposed in each cylindrical groove, an outer side face of the cylindrical magnetic steel 15 abuts against an inner side face of the cylindrical groove, that is, the figure enclosed by the end faces of the cylindrical magnetic steel 15 is circular.
The integrated shaft 5 comprises a motor shaft and a ball screw, wherein the motor shaft is integrally connected with the ball screw, the motor shaft is arranged in the installation cavity, the ball screw is arranged in the telescopic cavity, the encoder 4 and the rotor 7 sequentially penetrate through the motor shaft, the stator 6 is arranged on the outer side of the rotor 7, two ends of the rotor 7 are respectively provided with a bearing 8 and a retainer ring 9, the bearing 8 is arranged close to the rotor 7, the retainer ring 9 is arranged far away from the rotor 7, and the bearing 8 is connected with the retainer ring 9; a piston rod 12 is arranged on the ball screw, a nut 10 is arranged at the joint of the ball screw and the piston rod 12, the piston rod 12 is connected with the nut 10 through a nut sleeve 11, and the piston rod 12 can extend out of the front end cover 2.
The inner side of the machine shell 1 is provided with a guide rail 13, and the outer side of the nut sleeve 11 is provided with a guide rail sliding groove 14. When the electric cylinder is operated, the piston rod 12 extends and contracts relative to the front end cover 2, and the guide rail sliding groove 14 on the nut sleeve 11 slides along the guide rail 13 during extension and contraction.
In a preferred embodiment, the guide rail sliding groove 14 is made of a POM high polymer wear-resistant material, so that the service life of the nut sleeve 11 is prolonged.
According to the utility model, the magnetic steel is embedded in the rotor 7, so that the condition of magnetic steel falling failure of the servo electric cylinder is effectively prevented, the failure rate is reduced, the magnetoelectric conversion efficiency is increased, the production efficiency is improved, and meanwhile, the gap between the rotor 7 and the stator 6 is reduced because the magnetic steel is embedded, so that the size of the whole machine is reduced.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. A servo electric cylinder with embedded magnetic steel comprises a casing, a front end cover and a rear end cover, and is characterized by also comprising an encoder, an integral shaft, a stator, a rotor, a bearing, a check ring, a nut sleeve and a piston rod which are arranged in the casing, wherein,
a plurality of columnar groove bodies are axially arranged in the rotor at equal intervals close to the outer ring of the rotor, a columnar magnetic steel is arranged in each columnar groove body, and the outer side surface of each columnar magnetic steel is abutted to the inner side surface of each columnar groove body;
the casing comprises a front end and a rear end, a telescopic cavity is arranged at the front part in the casing, an installation cavity is arranged at the rear part in the casing, the front end cover is arranged at the front end, and the rear end cover is arranged at the rear end;
the integrated shaft is sequentially provided with an encoder, a rotor and a piston rod in a penetrating manner, wherein the outer side of the rotor is provided with a stator, two ends of the rotor are respectively provided with a bearing and a retainer ring, the bearing is arranged close to the rotor, the retainer ring is arranged far away from the rotor, the bearing is connected with the retainer ring, the integrated shaft is provided with a nut at the joint with the piston rod, and the piston rod is connected with the nut through a nut sleeve;
the one end that integrative axle was equipped with encoder and rotor is located the installation intracavity, and the flexible intracavity is located to the one end that is equipped with the piston rod, and the front end housing can be stretched out to the piston rod.
2. The servo electric cylinder embedded with magnetic steel as claimed in claim 1, wherein the end face of the columnar groove body is arc-shaped.
3. The servo electric cylinder with embedded magnetic steel as claimed in claim 1, wherein the integrated shaft comprises a motor shaft and a ball screw, wherein the motor shaft and the ball screw are integrally connected, the motor shaft is disposed in the mounting cavity, the ball screw is disposed in the telescopic cavity, the encoder and the rotor are sleeved on the motor shaft, and the piston rod is sleeved on the ball screw.
4. The servo electric cylinder with embedded magnetic steel as claimed in claim 1, wherein the casing has a guide rail inside, and the nut sleeve has a guide rail sliding groove outside, wherein the guide rail sliding groove can slide along the guide rail.
5. The servo electric cylinder embedded with magnetic steel as claimed in claim 4, wherein the guide rail sliding groove is made of POM high polymer wear-resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121985424.XU CN216056530U (en) | 2021-08-23 | 2021-08-23 | Servo electric cylinder with embedded magnetic steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121985424.XU CN216056530U (en) | 2021-08-23 | 2021-08-23 | Servo electric cylinder with embedded magnetic steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216056530U true CN216056530U (en) | 2022-03-15 |
Family
ID=80560031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121985424.XU Active CN216056530U (en) | 2021-08-23 | 2021-08-23 | Servo electric cylinder with embedded magnetic steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216056530U (en) |
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2021
- 2021-08-23 CN CN202121985424.XU patent/CN216056530U/en active Active
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