CN208578879U - A kind of bearing pre-tightened mechanism of electro spindle - Google Patents
A kind of bearing pre-tightened mechanism of electro spindle Download PDFInfo
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- CN208578879U CN208578879U CN201821078524.2U CN201821078524U CN208578879U CN 208578879 U CN208578879 U CN 208578879U CN 201821078524 U CN201821078524 U CN 201821078524U CN 208578879 U CN208578879 U CN 208578879U
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Abstract
The utility model discloses a kind of bearing pre-tightened mechanisms of electro spindle, it includes steel cylinder, bearing sleeve, bearing block, bearing plate, Bearing housing, bearing and rotor, bearing sleeve is inserted in the opening of steel cylinder and the two is fixedly connected, bearing block is set in bearing sleeve, bearing holder (housing, cover) is set to rotor, and bearing is between rotor and bearing block, Bearing housing is fixed on the top of bearing sleeve, Bearing housing is sheathed on rotor, and the inner ring of Bearing housing and bearing abuts against, the lower end of bearing block is formed with the bearing tray to bend inwards, the outer ring of bearing is connected to bearing tray, the lower end of bearing sleeve is formed with the interior edge to bend inwards, multiple preloading springs are folded between the lower end of bearing block and interior edge, and elastic pre-stress is applied to bearing by preloading spring.The utility model can flexibly provide pretightning force in bearing operation, and then improve the running accuracy of main shaft, improve the service life of main shaft.
Description
Technical field
The utility model relates to the bearing pre-tightened mechanisms of electro spindle more particularly to a kind of electro spindle.
Background technique
In existing electro spindle product, when shaft operating, bearing generates heat because of rotation, and shaft will be due to heat expansion
The effect of shrinkage and extend shortening, the bearing on bearing can move up and down, prevent bearing is from running well, or even seize
Phenomenon causes Main Shaft Service Life to shorten, and reduces main shaft running accuracy, also influences Main Shaft Service Life.
Utility model content
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, providing one kind can be in bearing
Pretightning force is flexibly provided when operating, and then improves the running accuracy of main shaft, improve the bearing pre-tightened mechanism of Main Shaft Service Life.
In order to solve the above technical problems, the utility model adopts the following technical solution.
A kind of bearing pre-tightened mechanism of electro spindle comprising have steel cylinder, bearing sleeve, bearing block, bearing plate, bearing pressure
Set, bearing and rotor, the bearing sleeve is inserted in the opening of the steel cylinder and the two is fixedly connected, and the bearing block is set to
In the bearing sleeve, the bearing holder (housing, cover) is set to the rotor, and the bearing is between the rotor and the bearing block,
The Bearing housing is fixed on the top of bearing sleeve, and the Bearing housing is sheathed on the rotor, and the Bearing housing with
The inner ring of the bearing abuts against, and the lower end of the bearing block is formed with the bearing tray to bend inwards, the outer ring of the bearing
Be connected to the bearing tray, the lower end of the bearing sleeve is formed with the interior edge to bend inwards, the lower end of the bearing block with
It is folded with multiple preloading springs between the interior edge, and elastic pre-stress is applied to the bearing by the preloading spring.
Preferably, the lower end of the bearing block offers multiple first blind holes, described interior blind along above offering multiple second
Hole, first blind hole are aligned one by one with the second blind hole, and the both ends of the preloading spring are respectively arranged on first blind hole and
In two blind holes.
Preferably, limit sleeve is arranged on the rotor, the limit sleeve is located at below the bearing, and the limit sleeve
It is abutted against with the inner ring of the bearing, the lateral wall of the rotor is formed with the stage portion outwardly protruded, under the limit sleeve
End is connected to the stage portion, and gap is equipped between the limit sleeve and the bearing tray.
Preferably, the outer sheath of the bearing block is equipped with steel ball set, and the steel ball set is located in the bearing block and bearing
Between cover for seat.
The bearing pre-tightened mechanism of electro spindle disclosed by the utility model, when in use, when rotor moves down, then bearing block
It moves down therewith, so that preloading spring is compressed, while applying upward elastic thrust to bearing block, in the work of Bearing housing
Under, reaction force is applied to bearing block, so that bearing pre-tightened；And certain heat can be generated when bearing operation, turn at this time
Son is since the effect of expanding with heat and contract with cold generates small stroke, by the elastic force that preloading spring applies, so that bearing remains at
It is operated under Pre strained state, ensure that the running accuracy of bearing, extend the service life of bearing.Based on above-mentioned characteristic, so that this
Utility model can flexibly provide pretightning force in bearing operation, and then the running accuracy of raising main shaft and raising main shaft make
Use the service life.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the utility model bearing pre-tightened mechanism.
Fig. 2 is the enlarged drawing of part A in Fig. 1.
Specific embodiment
The utility model is described in more detail with reference to the accompanying drawings and examples.
The utility model discloses a kind of bearing pre-tightened mechanisms of electro spindle, referring to figs. 1 and 2 comprising have steel
Cylinder 1, bearing sleeve 2, bearing block 3, bearing plate 4, Bearing housing 5, bearing 6 and rotor 7, the bearing sleeve 2 are inserted in institute
The opening and the two for stating steel cylinder 1 are fixedly connected, and the bearing block 3 is set in the bearing sleeve 2, and the bearing 6 is sheathed on
The rotor 7, and the bearing 6, between the rotor 7 and the bearing block 3, the Bearing housing 5 is fixed on bearing block
The top of set 2, the Bearing housing 5 is sheathed on the rotor 7, and the Bearing housing 5 and the inner ring of the bearing 6 offset
It connects, the lower end of the bearing block 3 is formed with the bearing tray 30 to bend inwards, and the outer ring of the bearing 6 is connected to the bearing
Tray 30, the lower end of the bearing sleeve 2 are formed with bend inwards interior along 20, the lower end of the bearing block 3 and the interior edge
It is folded with multiple preloading springs 8 between 20, and elastic pre-stress is applied to the bearing 6 by the preloading spring 8.
When in use, when rotor 7 moves down, then bearing block 3 moves down therewith, so that in advance for above-mentioned bearing pre-tightened mechanism
Tight spring 8 is compressed, while applying upward elastic thrust to bearing block 3, under the action of Bearing housing 5, is applied to bearing block 3
Add reaction force, so that bearing 6 pre-tightens；And when bearing 6 operate when can generate certain heat, at this time rotor 7 due to heat expansion it is cold
Contracting effect generates small stroke, by the elastic force that preloading spring 8 applies, so that bearing 6 remains under Pre strained state
Operating, ensure that the running accuracy of bearing 6, extends the service life of bearing 6.Based on above-mentioned characteristic, so that the utility model
Pretightning force can be flexibly provided in bearing operation, and then improve the running accuracy of main shaft and improve Main Shaft Service Life.
Predeterminated position is limited in for the ease of installation preloading spring 8 and by preloading spring 8, in the present embodiment, is please referred to
Fig. 2, the lower end of the bearing block 3 offer multiple first blind holes 31, described interior multiple second blind holes 21, institute to be offered along 20
It states the first blind hole 31 to be aligned one by one with the second blind hole 21, the both ends of the preloading spring 8 are respectively arranged on 31 He of the first blind hole
In second blind hole 21.
In order to which the lower end to bearing 6 limits, in the present embodiment, limit sleeve 9, the limit are arranged on the rotor 7
Position set 9 is located at 6 lower section of bearing, and the limit sleeve 9 and the inner ring of the bearing 6 abut against, the lateral wall of the rotor 7
Be formed with the stage portion 70 outwardly protruded, the lower end of the limit sleeve 9 is connected to the stage portion 70, and the limit sleeve 9 with
Gap is equipped between the bearing tray 30.
The outer sheath of the bearing block 3 is equipped with steel ball set 10 as a preferred method, and the steel ball set 10 is located in institute
It states between bearing block 3 and bearing sleeve 2.Under the action of steel ball set 10, it may make and formed between bearing sleeve 2 and bearing block 3
Activity surplus can avoid the two rigid connection, to improve the overall performance of equipment.
The above is the utility model preferred embodiment, is not intended to limit the utility model, all practical at this
Modification, equivalent replacement or the improvement etc. made in novel technical scope, should be included in the model that the utility model is protected
In enclosing.
Claims (4)
1. a kind of bearing pre-tightened mechanism of electro spindle, which is characterized in that include steel cylinder (1), bearing sleeve (2), bearing block
(3), bearing plate (4), Bearing housing (5), bearing (6) and rotor (7), the bearing sleeve (2) are inserted in the steel cylinder (1)
Opening and the two be fixedly connected, the bearing block (3) be set to the bearing sleeve (2) in, the bearing (6) is sheathed on institute
It states rotor (7), and the bearing (6), between the rotor (7) and the bearing block (3), the Bearing housing (5) is fixed
In the top of bearing sleeve (2), the Bearing housing (5) is sheathed on the rotor (7), and the Bearing housing (5) with it is described
The inner ring of bearing (6) abuts against, and the lower end of the bearing block (3) is formed with the bearing tray (30) to bend inwards, the bearing
(6) outer ring is connected to the bearing tray (30), and the lower end of the bearing sleeve (2) is formed with the interior edge to bend inwards
(20), multiple preloading springs (8) are folded between the lower end and the interior edge (20) of the bearing block (3), and by the preload
Spring (8) applies elastic pre-stress to the bearing (6).
2. the bearing pre-tightened mechanism of electro spindle as described in claim 1, which is characterized in that open the lower end of the bearing block (3)
Equipped with multiple first blind holes (31), offer multiple second blind holes (21) on the interior edge (20), first blind hole (31) with
Second blind hole (21) is aligned one by one, and the both ends of the preloading spring (8) are respectively arranged on first blind hole (31) and the second blind hole
(21) in.
3. the bearing pre-tightened mechanism of electro spindle as described in claim 1, which is characterized in that be arranged on the rotor (7) limited
Position set (9), the limit sleeve (9) is located at below the bearing (6), and the inner ring phase of the limit sleeve (9) and the bearing (6)
It abuts, the lateral wall of the rotor (7) is formed with the stage portion (70) outwardly protruded, and the lower end of the limit sleeve (9) is connected to
The stage portion (70), and gap is equipped between the limit sleeve (9) and the bearing tray (30).
4. the bearing pre-tightened mechanism of electro spindle as described in claim 1, which is characterized in that the outer sheath of the bearing block (3)
Equipped with steel ball set (10), the steel ball set (10) is located between the bearing block (3) and bearing sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821078524.2U CN208578879U (en) | 2018-07-08 | 2018-07-08 | A kind of bearing pre-tightened mechanism of electro spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821078524.2U CN208578879U (en) | 2018-07-08 | 2018-07-08 | A kind of bearing pre-tightened mechanism of electro spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208578879U true CN208578879U (en) | 2019-03-05 |
Family
ID=65509990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821078524.2U Active CN208578879U (en) | 2018-07-08 | 2018-07-08 | A kind of bearing pre-tightened mechanism of electro spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208578879U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112222933A (en) * | 2020-10-22 | 2021-01-15 | 哈尔滨理工大学 | Variable-voltage pre-tightening device of high-speed electric spindle |
| CN115711262A (en) * | 2021-08-23 | 2023-02-24 | 中国科学院理化技术研究所 | Main shaft supporting structure of rotating machinery and rotating machinery |
-
2018
- 2018-07-08 CN CN201821078524.2U patent/CN208578879U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112222933A (en) * | 2020-10-22 | 2021-01-15 | 哈尔滨理工大学 | Variable-voltage pre-tightening device of high-speed electric spindle |
| CN115711262A (en) * | 2021-08-23 | 2023-02-24 | 中国科学院理化技术研究所 | Main shaft supporting structure of rotating machinery and rotating machinery |
| CN115711262B (en) * | 2021-08-23 | 2023-06-16 | 中国科学院理化技术研究所 | Main shaft supporting structure of rotary machine and rotary machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518111 1st and 2nd floors, building A6, silicon valley power intelligent terminal Industrial Park, No.20, Dafu Industrial Zone, Aobei community, Guanlan street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen aibeike Precision Industry Co.,Ltd. Address before: 518111 2nd floor, building A6, silicon valley power intelligent terminal Industrial Park, 20 Dafu Industrial Zone, Aobei community, Guanlan street, Longhua New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN ABIG PRECISION MACHINERY Co.,Ltd. |
|
| CP03 | Change of name, title or address |