CN216729591U - Non-contact axial floating elimination structure for rotating shaft of electric spindle and electric spindle - Google Patents
Non-contact axial floating elimination structure for rotating shaft of electric spindle and electric spindle Download PDFInfo
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- CN216729591U CN216729591U CN202220339745.0U CN202220339745U CN216729591U CN 216729591 U CN216729591 U CN 216729591U CN 202220339745 U CN202220339745 U CN 202220339745U CN 216729591 U CN216729591 U CN 216729591U
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Abstract
The utility model discloses a non-contact axial floating elimination structure of a rotating shaft of an electric main shaft and the electric main shaft, belonging to the field of electric main shafts.A rotating shaft is arranged in a shell of the electric main shaft and penetrates out of the shell of the electric main shaft; an inner ring of the angular contact ball bearing is sleeved on the rotating shaft and fixed with the rotating shaft, an outer ring of the angular contact ball bearing is fixed on the electric spindle shell, and the angular contact ball bearing bears the radial force of the rotating shaft; the bearing component is arranged on one side of the angular contact ball bearing and comprises a first bearing component fixed on the electric spindle shell and a second bearing component fixed on the rotating shaft, the first bearing component is not in contact with the second bearing component, at least one of the first bearing component and the second bearing component is a magnetic part with magnetic force, the magnetic part can apply magnetic force to the other bearing component to enable the rotating shaft to be subjected to axial acting force in one direction, and the acting force drives the rotating shaft to drive the inner ring of the angular contact ball bearing to press the ball of the angular contact ball bearing on the outer ring so as to limit axial floating of the rotating shaft.
Description
Technical Field
The utility model relates to the field of electric spindles, in particular to a non-contact axial floating elimination structure of a rotating shaft of an electric spindle and the electric spindle.
Background
The electric main shaft is one kind of motor, and the electric main shaft is composed of a shell-less motor, a rotating shaft, bearings, a main shaft unit shell, a driving module, a cooling device and the like, wherein a rotor of the motor is integrated with the rotating shaft by adopting a press-fit method, the rotating shaft is supported by a front bearing and a rear bearing, and a stator of the motor is arranged in the shell through a cooling sleeve. The existing problem is that when a rotating shaft of an electric spindle is used, due to the problems of assembly or overlarge gap and the like, the axial, radial and oblique floating of the rotating shaft is easily caused, so that the center of the rotating shaft is deviated, and the use of the electric spindle is influenced.
The existing electric spindle specially designed for bearing support of multi-element bearing with publication number CN102570692A comprises a shell and a rotating shaft arranged in the shell, a stator and a rotor with a built-in motor, wherein the front end of the rotating shaft is arranged outside the shell and adjacent to a front cover of the shell, an oil inlet for supplying pressure oil to the rotating shaft is arranged in the front cover of the shell, a rear support bearing is connected to the tail end of the rotating shaft in the shell, the rear support bearing is an angular contact ball bearing used in pairs, and the double-row angular contact ball bearing can bear radial and axial combined load and moment load which mainly bear larger radial load, and limit axial displacement of two aspects of the shaft, thereby eliminating radial and axial floating of the rotating shaft.
However, two angular contact ball bearings in the paired angular contact ball bearings need to adjust a proper gap, and are difficult to adjust, unstable in use and incapable of achieving a good effect of eliminating axial floating of the rotating shaft.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a non-contact axial floating elimination structure of a rotating shaft of an electric spindle, which can eliminate axial floating of the rotating shaft and ensure that the rotating shaft works stably.
The technical scheme of the utility model is as follows: the contactless axial of pivot of electricity main shaft floats elimination structure, its characterized in that includes:
a rotating shaft, which is arranged in the electric main shaft shell and penetrates out of the electric main shaft shell;
an inner ring of the angular contact ball bearing is sleeved on the rotating shaft and fixed with the rotating shaft, an outer ring of the angular contact ball bearing is fixed on the electric spindle shell, and the angular contact ball bearing bears the radial force of the rotating shaft;
the bearing component is arranged on one side of the angular contact ball bearing and comprises a first bearing component fixed on the electric spindle shell and a second bearing component fixed on the rotating shaft, the first bearing component is not in contact with the second bearing component, at least one of the first bearing component and the second bearing component is a magnetic part with magnetic force, the magnetic part can apply magnetic force to the other bearing component to enable the rotating shaft to be subjected to axial acting force in one direction, and the acting force drives the rotating shaft to drive the inner ring of the angular contact ball bearing to press the ball of the angular contact ball bearing on the outer ring so as to limit axial floating of the rotating shaft.
The further optimization scheme of the utility model is as follows: the bearing part I and the bearing part II are both magnetic pieces with magnetic force, and the mutual repulsion force application of the magnetic force of the bearing part I and the magnetic force of the bearing part II enables the rotating shaft to be subjected to axial acting force in one direction.
The further optimization scheme of the utility model is as follows: the bearing component I and the bearing component II are both magnetic pieces with magnetic force, and the magnetic force of the bearing component I and the magnetic force of the bearing component II attract each other to apply force so that the rotating shaft is subjected to axial acting force in one direction.
The further optimization scheme of the utility model is as follows: the first bearing part is an electromagnet, and the second bearing part is a permanent magnet.
The further optimization scheme of the utility model is as follows: the electromagnet is connected with the controller, the electric spindle is provided with a rotating speed sensor, the rotating speed sensor is connected with the controller and used for sensing the rotating speed of the rotating shaft, and when the rotating shaft is sensed to rotate, the electromagnet is turned on by the controller.
The further optimization scheme of the utility model is as follows: the bearing component II is a magnetic piece with magnetic force, the bearing component I is magnetic metal, and the bearing component II exerts the attractive force of the magnetic force on the bearing component I so that the rotating shaft is subjected to axial acting force in one direction.
The further optimization scheme of the utility model is as follows: the bearing component I is a magnetic piece with magnetic force, the bearing component II is magnetic metal, and the bearing component exerts the attractive force of the magnetic force on the bearing component II to enable the rotating shaft to be subjected to axial acting force in one direction.
The further optimization scheme of the utility model is as follows: and a bearing is arranged on an end cover of the electric main shaft shell, and an inner ring of the bearing is sleeved on the rotating shaft.
The further optimization scheme of the utility model is as follows: the bearing part I is of a circular structure, the rotating shaft penetrates through a central hole of the bearing part I, the rotating shaft is in no contact with the bearing part, the bearing part II is of a circular structure, the rotating shaft penetrates through the center of the bearing part II, and opposite surfaces of the bearing part I and the bearing part II are parallel.
The electric spindle is characterized by comprising an electric spindle shell and the non-contact axial floating elimination structure of the rotating shaft of the electric spindle, wherein a stator is arranged in the electric spindle shell, and a rotor is arranged on the rotating shaft.
Compared with the prior art, the angular contact ball bearing has the advantages that the angular contact ball bearing bears the radial force of the rotating shaft and limits the radial floating of the rotating shaft, the magnetic part exerts magnetic force on the other bearing part to enable the rotating shaft to bear acting force in one direction, the acting force drives the rotating shaft to drive the inner ring of the angular contact ball bearing to press the ball of the angular contact ball bearing to the outer ring, so that the axial floating of the rotating shaft is limited, the rotating shaft always keeps concentricity during rotating operation, the rotating shaft works more stably, the magnetic part exerts magnetic force on the other bearing part to replace one of the original paired angular contact ball bearings, and the contactless bearing part I and the contactless bearing part II mutually exert force to facilitate adjustment.
Drawings
The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the background art and explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.
Fig. 1 is a schematic view of the overall structure of an electric spindle.
Fig. 2 is an exploded view of the rear portion of the electric spindle.
Fig. 3 is an exploded view of the front portion of the electric spindle.
FIG. 4 is a partial schematic view of the present invention.
Fig. 5 is a sectional view of the electric spindle when the magnetic force of the first carrier member and the magnetic force of the second carrier member are applied in a mutually repulsive manner.
Fig. 6 is a sectional view of the electric spindle when the magnetic force of the first carrier member and the magnetic force of the second carrier member are attracted and applied.
In the figure: 1. an electric spindle housing; 2. a rear end cap; 3. a front end cap; 4. a through hole; 5. a needle bearing; 6. a rotating shaft; 7. a first bearing part; 8. a central bore; 9. an inner annular edge; 10. a second bearing part; 11. a stator; 12. a rotor; 13. angular contact ball bearings; 14. an outer ring; 15. a ball bearing; 16. an inner ring; 17. an annular step; 18. an annular neck; 19. a compression block; 20. and (7) inserting the jack.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the utility model.
It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element which is referred to must have a specific orientation, be constructed in a specific orientation and operation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-6, the electric spindle comprises an electric spindle housing 1 and a non-contact axial floating eliminating structure of a rotating shaft of the electric spindle.
The non-contact axial floating elimination structure for the rotating shaft of the electric spindle comprises the rotating shaft 6, an angular contact ball bearing 13 and an axial bearing assembly.
The rotating shaft 6 is arranged in the electric spindle housing 1, the end part of the rotating shaft 6 penetrates out of the electric spindle housing 1, specifically, the front end of the electric spindle housing 1 is connected with a front end cover 3, the front end cover 3 is fixedly connected to the front end of the electric spindle housing 1 through screws, a through hole 4 is formed in the center of the front end cover 3, and the rotating shaft 6 in the electric spindle housing 1 penetrates out of the through hole 4 in the center of the front end cover 3.
A stator 11 is arranged in the electric spindle casing 1, the stator 11 and the electric spindle casing 1 are relatively fixed, a rotor 12 is arranged on the rotating shaft 6, the rotor 12 and the rotating shaft 6 are relatively fixed, the stator 11 and the rotor 12 are both arranged in the electric spindle casing 1, and the stator 11 and the rotor 12 interact to enable the rotating shaft 6 to rotate. The structure of the stator 11 and the rotor 12 is the same as that of the conventional electric spindle.
In addition, as shown in fig. 3, a bearing is installed in a through hole 4 in the center of the front end cover 3, an outer ring of the bearing is connected with the inner wall of the through hole 4, an inner ring of the bearing is sleeved on the rotating shaft 6 and connected with the rotating shaft 6, and the bearing radially supports the rotating shaft 6, so that the rotating shaft 6 can smoothly rotate. Preferably, the bearing is a needle bearing 5.
The angular contact ball bearing 13 is arranged in the electric spindle housing 1, an inner ring 16 of the angular contact ball bearing 13 is sleeved on the rotating shaft 6 and fixed with the rotating shaft 6, and preferably, the inner ring 16 of the angular contact ball bearing 13 is in tight fit connection with the rotating shaft 6.
The outer ring 14 of the angular contact ball bearing 13 is fixed on the electric spindle housing 1, and preferably, the outer ring 14 of the angular contact ball bearing 13 is tightly connected with the inner wall of the electric spindle housing 1.
The angular ball bearing 13 is sleeved on the rotating shaft 6, and the outer ring 14, the inner ring 16 and the balls 15 in the middle have no clearance in the radial direction, so that the angular ball bearing 13 can bear the radial force of the rotating shaft 6 and limit the floating of the rotating shaft 6 in the radial direction. The angular ball bearing 13 is similar to the angular ball bearing 13 that is currently on the market.
The axial bearing assembly is arranged on one side of the angular contact ball bearing 13, as shown in the figure, the axial bearing assembly is arranged on the right side of the angular contact ball bearing 13, the axial bearing assembly comprises a first bearing part 7 fixed on the electric spindle machine shell 1 and a second bearing part 10 fixed on the rotating shaft 6, at least one of the first bearing part 7 and the second bearing part 10 is a magnetic part with magnetic force, the first bearing part 7 is not in contact with the second bearing part 10, the magnetic part can apply magnetic force to the other bearing part to enable the rotating shaft 6 to receive axial acting force in one direction, and the first bearing part 7 and the second bearing part 10 apply force in a non-contact mode.
When the rotating shaft 6 is subjected to an axial acting force in one direction, the acting force can drive the rotating shaft 6 to drive the inner ring 16 of the angular contact ball bearing 13 to move in the direction, so that the shoulder part of the inner ring 16 of the angular contact ball bearing 13 presses the middle ball 15 against the shoulder part of the outer ring 14 of the angular contact ball bearing 13 in the axial direction, and the shoulder part of the outer ring 14 of the angular contact ball bearing 13 generates an axial limiting force in the direction opposite to the acting force on the inner ring 16 and the ball 15, thereby limiting the axial floating of the rotating shaft 6.
As shown in fig. 2 and 4, in addition, the first bearing part 7 is a circular ring-shaped structure, the rear end of the electric spindle housing 1 is connected to the rear end cap 2, the rear end cap 2 is fixedly connected to the rear end of the electric spindle housing 1 through screws, the electric spindle housing 1 is a cylindrical structure which is through from front to back, an inner annular edge 9 is arranged on the inner wall of the electric spindle housing 1, when the first bearing part 7 is inserted into the electric spindle housing 1, the rear end cap 2 is connected to the rear end of the electric spindle housing 1, the first bearing part 7 is tightly pressed and fixed on the inner annular edge 9 by the rear end cap 2, so that the first bearing part 7 is fixed on the electric spindle housing 1, a central hole 8 is formed in the center of the first bearing part 7, the rear end of the rotating shaft 6 can penetrate through the central hole 8 of the first bearing part 7, and the rotating shaft 6 is not in contact with the first bearing part 7.
In addition, the second bearing part 10 is of a circular structure, an insertion hole 20 is formed in the second bearing part 10, the second bearing part 10 is inserted into the rotating shaft 6 from the tail end of the rotating shaft 6, the tail end of the rotating shaft 6 penetrates through the insertion hole 20 in the center of the second bearing part 10, an annular step 17 is formed in the tail end of the rotating shaft 6, the second bearing part 10 sleeved on the rotating shaft 6 abuts against the annular step 17, a pressing block 19 is connected to the tail end of the rotating shaft 6, the pressing block 19 is connected to the tail end of the rotating shaft 6 through screws, an annular clamping groove 18 used for clamping the second bearing part 10 is formed by surrounding the pressing block 19, the rotating shaft 6 and the annular step 17, and when the pressing block 19 is connected to the tail end of the rotating shaft 6, the second bearing part 10 is tightly pressed on the annular step 17 to be fixed, so that the second bearing part 10 is fixed on the rotating shaft 6.
The opposite surfaces of the first bearing part 7 and the second bearing part 10 are parallel, and when the magnetic part exerts magnetic force on the other bearing part, the stress between the first bearing part 7 and the second bearing part 10 is more uniform.
As shown in fig. 5, preferably, the first bearing component 7 and the second bearing component 10 are both magnetic members having magnetic force, and the mutual repulsive force between the magnetic force of the first bearing component 7 and the magnetic force of the second bearing component 10 causes the rotating shaft 6 to receive an axial force in one direction. For example, the first bearing part 7 is arranged at the right side of the second bearing part 10, the angular ball bearing 13 is arranged at the left side of the second bearing part 10, the opposite surfaces of the first bearing part 7 and the second bearing part 10 are both N poles, the magnetic force of the first bearing part 7 and the magnetic force of the second bearing part 10 interact to generate repulsive force, so that the second bearing part 10 drives the rotating shaft 6 to have a leftward movement trend, the rotating shaft 6 is subjected to leftward axial acting force, the acting force is set to be F1, the rotating shaft 6 moves leftward to enable the shoulder part at the right side of the inner ring 16 of the angular ball bearing 13 to press the middle ball 15 to the shoulder part at the left side of the outer ring 14 of the angular ball bearing 13, the shoulder part at the left side of the outer ring 14 of the angular ball bearing 13 generates axial limiting force opposite to the acting force on the inner ring 16 and the ball 15, and the limiting force is set to be F2, and therefore axial floating of the rotating shaft 6 is limited.
In addition, the first bearing part 7 is an electromagnet, the second bearing part 10 is a permanent magnet, the electromagnet is electrically connected with the controller, the controller is arranged on the electric spindle, a rotating speed sensor is further arranged on the electric spindle and electrically connected with the controller, the rotating speed sensor is used for sensing the rotating speed of the rotating shaft 6, and when the rotating shaft 6 is sensed to rotate, the controller turns on the electromagnet to enable the electromagnet to have magnetic force. The size of the magnetic force of the electromagnet can be controlled through the size of the current of the electromagnet, so that the axial acting force on the rotating shaft 6 can be conveniently adjusted.
Referring to fig. 6, in another embodiment, regarding the structure of the first bearing component 7 and the second bearing component 10, we have another embodiment that both the first bearing component 7 and the second bearing component 10 are magnetic members having magnetic force, and the magnetic force of the first bearing component 7 and the magnetic force of the second bearing component 10 attract each other to apply force, so that the rotating shaft 6 receives axial force in one direction. For example, the opposite surfaces of the first bearing component 7 and the second bearing component 10 are N-pole and S-pole, the magnetic force of the first bearing component 7 and the magnetic force of the second bearing component 10 interact to generate attraction force, so that the second bearing component 10 drives the rotating shaft 6 to have a rightward movement trend, the rotating shaft 6 receives rightward axial acting force, the acting force is set to be F1, the rotating shaft 6 moves rightward, the left shoulder of the inner ring 16 of the angular ball bearing 13 presses the middle ball 15 to the right shoulder of the outer ring 14 of the angular ball bearing 13, the right shoulder of the outer ring 14 of the angular ball bearing 13 generates axial limiting force opposite to the acting force on the ball 15 and the inner ring 16, and therefore axial floating of the rotating shaft 6 is limited, and the limiting force is set to be F2. And the first bearing part 7 is an electromagnet, the second bearing part 10 is a permanent magnet, the electromagnet is electrically connected with a controller, the controller is arranged on an electric spindle, a rotating speed sensor is further arranged on the electric spindle and electrically connected with the controller, the rotating speed sensor is used for sensing the rotating speed of the rotating shaft 6, and when the rotating shaft 6 is sensed to rotate, the controller turns on the electromagnet to enable the electromagnet to have magnetic force. The size of the magnetic force of the electromagnet can be controlled through the size of the current of the electromagnet, so that the axial acting force on the rotating shaft 6 can be conveniently adjusted.
In another aspect, regarding the structure of the first bearing component 7 and the second bearing component 10, we have another aspect, where the second bearing component 10 is a magnetic member having magnetic force, such as a permanent magnet, the first bearing component 7 is a magnetic metal, such as iron, cobalt, nickel, and an alloy thereof, the second bearing component 10 applies magnetic force to the first bearing component 7 to make the rotating shaft 6 receive axial force in one direction, the rotating shaft 6 pulls the inner ring 16 of the angular contact ball bearing 13 to move rightward, so that the shoulder on the left side of the inner ring 16 of the angular contact ball bearing 13 presses the middle ball 15 to the shoulder on the right side of the outer ring 14 of the angular contact ball bearing 13, and the shoulder on the right side of the outer ring 14 of the angular contact ball bearing 13 generates axial limiting force in the direction opposite to the acting force on the ball 15 and the inner ring 16, thereby limiting axial floating of the rotating shaft 6.
In another scheme, regarding the structure of the first bearing part 7 and the second bearing part 10, we have another scheme, the first bearing part 7 is a magnetic part with magnetic force, such as an electromagnet, the electromagnet is electrically connected with a controller, the controller is arranged on an electric spindle, a rotation speed sensor is further arranged on the electric spindle, the rotation speed sensor is electrically connected with the controller, the rotation speed sensor is used for sensing the rotation speed of the rotating shaft 6, when the rotating shaft 6 is sensed to rotate, the controller turns on the electromagnet to enable the electromagnet to have magnetic force, the size of the magnetic force of the electromagnet can be controlled through the size of the current of the electromagnet, so that the acting force on the rotating shaft 6 in the axial direction can be conveniently adjusted, the second bearing part 10 is made of magnetic metal, the first bearing part 7 exerts the attractive force of the magnetic force on the second bearing part 10 to enable the rotating shaft 6 to receive the acting force in one direction, the rotating shaft 6 pulls the inner ring 16 of the angular contact ball bearing 13 to move rightwards, so that the shoulder part on the left side of the inner ring 16 of the angular contact ball bearing 13 tightly presses the ball bearing 15 outside the angular contact bearing to the angular contact bearing right On the shoulder on the right side of the ring 14, the shoulder on the right side of the outer ring 14 of the angular contact ball bearing 13 generates an axial restraining force in the direction opposite to the acting force on the balls 15 and the inner ring 16, thereby restraining the axial floating of the rotating shaft 6.
The rotation speed sensor is the same as the existing rotation speed sensor, and the controller is also the existing controller.
The bearing device can change the left and right position distribution of the angular contact ball bearing 13 and the axial bearing assembly, and can also change the left and right position distribution of the first bearing part 7 and the second bearing part 10.
The other structures of the electric spindle are the same as those of the electric spindle existing on the market.
The present invention provides a non-contact axial floating elimination structure for a rotating shaft of an electric spindle and an electric spindle, and the electric spindle and the structure are described in detail, and the principle and the implementation manner of the present invention are explained in detail by applying specific examples, and the description of the above embodiments is only used to help understanding the present invention and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The contactless axial of pivot of electricity main shaft floats elimination structure, its characterized in that includes:
a rotating shaft, which is arranged in the electric main shaft shell and penetrates out of the electric main shaft shell;
an inner ring of the angular contact ball bearing is sleeved on the rotating shaft and fixed with the rotating shaft, an outer ring of the angular contact ball bearing is fixed on the electric spindle shell, and the angular contact ball bearing bears the radial force of the rotating shaft;
the bearing component is arranged on one side of the angular contact ball bearing and comprises a first bearing component fixed on the electric spindle shell and a second bearing component fixed on the rotating shaft, the first bearing component is not in contact with the second bearing component, at least one of the first bearing component and the second bearing component is a magnetic part with magnetic force, the magnetic part can apply magnetic force to the other bearing component to enable the rotating shaft to be subjected to axial acting force in one direction, and the acting force drives the rotating shaft to drive the inner ring of the angular contact ball bearing to press the ball of the angular contact ball bearing on the outer ring so as to limit axial floating of the rotating shaft.
2. The structure of claim 1, wherein the first and second bearing members are magnetic members having magnetic force, and the magnetic force of the first bearing member and the magnetic force of the second bearing member repel each other to apply an axial force in one direction to the rotating shaft.
3. The structure of claim 1, wherein the first bearing member and the second bearing member are magnetic members having magnetic force, and the magnetic force of the first bearing member and the magnetic force of the second bearing member attract each other to apply force, so that the rotating shaft receives axial force in one direction.
4. The structure of claim 2 or 3, wherein the first bearing member is an electromagnet and the second bearing member is a permanent magnet.
5. The structure of claim 4, wherein the electromagnet is connected to a controller, the electric spindle is provided with a rotation speed sensor, the rotation speed sensor is connected to the controller, the rotation speed sensor is used for sensing the rotation speed of the rotating shaft, and the controller turns on the electromagnet when sensing the rotation of the rotating shaft.
6. The structure of claim 1, wherein the second bearing member is a magnetic member with magnetic force, the first bearing member is a magnetic metal, and the first bearing member exerts an attractive force of the magnetic force on the first bearing member to make the rotating shaft receive an axial force in one direction.
7. The structure of claim 1, wherein the first bearing member is a magnetic member having magnetic force, the second bearing member is a magnetic metal, and the bearing member exerts magnetic force on the second bearing member to apply axial force in one direction to the rotating shaft.
8. The structure of claim 1, wherein the end cap of the electric spindle housing is provided with a bearing, and an inner ring of the bearing is sleeved on the rotating shaft.
9. The structure of claim 1, wherein the first bearing member is a circular ring structure, the rotating shaft passes through a central hole of the first bearing member, the rotating shaft is in non-contact with the bearing member, the second bearing member is a circular ring structure, the rotating shaft passes through a center of the second bearing member, and opposite surfaces of the first bearing member and the second bearing member are parallel.
10. Electric spindle, characterized in that it comprises an electric spindle housing and a contactless axial float-eliminating structure of the electric spindle shaft according to any of claims 1-9, in which the electric spindle housing is provided with a stator and the shaft is provided with a rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220339745.0U CN216729591U (en) | 2022-02-18 | 2022-02-18 | Non-contact axial floating elimination structure for rotating shaft of electric spindle and electric spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220339745.0U CN216729591U (en) | 2022-02-18 | 2022-02-18 | Non-contact axial floating elimination structure for rotating shaft of electric spindle and electric spindle |
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| Publication Number | Publication Date |
|---|---|
| CN216729591U true CN216729591U (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220339745.0U Active CN216729591U (en) | 2022-02-18 | 2022-02-18 | Non-contact axial floating elimination structure for rotating shaft of electric spindle and electric spindle |
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| CN (1) | CN216729591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114393223A (en) * | 2022-02-18 | 2022-04-26 | 浙江亚微精密机床有限公司 | Non-contact axial floating elimination structure for rotating shaft of electric spindle and electric spindle |
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2022
- 2022-02-18 CN CN202220339745.0U patent/CN216729591U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114393223A (en) * | 2022-02-18 | 2022-04-26 | 浙江亚微精密机床有限公司 | Non-contact axial floating elimination structure for rotating shaft of electric spindle and electric spindle |
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