CN201908960U - Bearing pre-tightening structure of high-speed electric spindle - Google Patents
Bearing pre-tightening structure of high-speed electric spindle Download PDFInfo
- Publication number
- CN201908960U CN201908960U CN2010206864160U CN201020686416U CN201908960U CN 201908960 U CN201908960 U CN 201908960U CN 2010206864160 U CN2010206864160 U CN 2010206864160U CN 201020686416 U CN201020686416 U CN 201020686416U CN 201908960 U CN201908960 U CN 201908960U
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- bearing
- bearing support
- speed electric
- bearing pre
- main shaft
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Abstract
The utility model relates to a bearing pre-tightening structure of a high-speed electric spindle, in particular to an angular-contact bearing pre-tightening structure installed on a rotating shaft. A steel-ball sleeve (2) is also arranged between the outer wall of a bearing seat (1) and the inner wall of a machine body (5). Through the bearing pre-tightening structure, the bearing seat is flexible to move, so that the abrasion of the bearing seat and the inside of the machine body is reduced, the service lives of a bearing and other parts are greatly prolonged, and the bearing pre-tightening structure is convenient to popularize and apply.
Description
Technical field
The utility model relates to a kind of machining equipment, specifically a kind of pre-pressing structure that is installed in the angular contact bearing on the running shaft.
Background technique
In the prior art, running shaft and angular contact bearing pack into bearing support and put in place after, when running shaft turns round, bearing support and body friction can produce heat, running shaft will extend shortening owing to the effect of expanding with heat and contract with cold, and bearing support can move up and down, and the friction of bearing support and body outer wall is increased, bearing support moves and becomes dumb, even the seize phenomenon takes place.
Summary of the invention
The utility model relates to a kind of bearing pre-tightened structure of high-speed electric main shaft, and it moves flexibly bearing support, has reduced the wearing and tearing of bearing support and internal body, has prolonged the working life of bearing and other parts greatly, is convenient to promote and use.
The utility model technical solution is in existing bearing seat (1), body (5), and on the basis of dunnage (7), the utility model is particularly in also being provided with steel ball sleeve (2) between bearing support (1) outer wall and body (5) inwall.
More than the upper edge and the lower edge of steel ball sleeve described in the utility model (2) be equipped with seal ring (4).
At least one axial shrinkage pool is arranged at the bottom of bearing support described in the utility model (1), is provided with spring (3) in each axial shrinkage pool.
Two equally distributed shrinkage pools are arranged at above-described bearing support (1) bottom.
More than the ring wall inside of bearing support described in the utility model (1) have an axial hole at least, be equipped with screw (6) in each axial hole, the end face of screw (6) head end is near the upper surface of dunnage (7).
There are two axial holes the ring wall inside of bearing support of the present utility model (1).
Uniform several holes on bearing support of the present utility model (1) bottom surface is used to install the spring (3) of corresponding number, has several tapped holes to be used to install the screw (6) of corresponding number simultaneously, and steel ball sleeve (2) is made up of steel ball and retainer.
When running shaft and angular contact bearing pack into bearing support (1) and put in place after, spring (3) is compressed, and produces thrust upwards, makes the angular contact bearing pretension.When running shaft turns round, can produce heat, running shaft will extend shortening owing to the effect of expanding with heat and contract with cold, bearing support (1) can move up and down, because the existence of steel ball sleeve (2) makes bearing support (1) very little with the friction of body (5) outer wall, bearing support moves more flexible.Seal ring (4) also plays the effect that reduces the impact between steel ball sleeve (2) and the body (5) simultaneously.Can prolong the life-span of bearing like this, reduce the wearing and tearing of bearing support and body, improve the running accuracy of main shaft.There are a little gap in the end face of screw (6) and dunnage (7), so just can not move down by bearing support when running shaft bears downward power always, play position-limiting action, can protect other part and the bearing of equipment like this.
Advantage of the present utility model is:
1, reduces the wearing and tearing of bearing support and body, prolonged the working life of bearing support and other parts;
2, that running shaft is worked together is more flexible for this structure.
Description of drawings
Fig. 1 is a profile construction schematic representation of the present utility model.
Embodiment
Embodiment 1
According to shown in Figure 1, the utility model is at existing bearing seat 1, and body 5 on the basis of dunnage 7, also is provided with steel ball sleeve 2 between bearing support 1 outer wall and body 5 inwalls.
Embodiment 2
Identical with embodiment 1, the upper edge and the lower edge that are described steel ball sleeve 2 are equipped with seal ring 4.
Embodiment 3
Identical with embodiment 2, be that two equally distributed shrinkage pools are arranged at described bearing support 1 bottom, be provided with spring 3 in each axial shrinkage pool.
Embodiment 4
Identical with embodiment 1, there are two axial holes the ring wall inside that is described bearing support 1, is equipped with screw 6 in each axial hole, and the end face of screw 6 head ends is near the upper surface of dunnage 7.
Claims (6)
1. the bearing pre-tightened structure of a high-speed electric main shaft, it has comprised bearing support (1), body (5), dunnage (7) is characterized in that also being provided with steel ball sleeve (2) between bearing support (1) outer wall and body (5) inwall.
2. the bearing pre-tightened structure of a kind of high-speed electric main shaft according to claim 1 is characterized in that the upper edge of steel ball sleeve (2) and lower edge are equipped with seal ring (4).
3. the bearing pre-tightened structure of a kind of high-speed electric main shaft according to claim 1 is characterized in that at least one axial shrinkage pool is arranged at the bottom of bearing support (1), is provided with spring (3) in each axial shrinkage pool.
4. the bearing pre-tightened structure of a kind of high-speed electric main shaft according to claim 1 is characterized in that two equally distributed shrinkage pools are arranged at bearing support (1) bottom.
5. the bearing pre-tightened structure of a kind of high-speed electric main shaft according to claim 1, the ring wall inside that it is characterized in that bearing support (1) has an axial hole at least, be equipped with screw (6) in each axial hole, the end face of screw (6) head end is near the upper surface of dunnage (7).
6. the bearing pre-tightened structure of a kind of high-speed electric main shaft according to claim 1 is characterized in that there are two axial holes the ring wall inside of bearing support (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206864160U CN201908960U (en) | 2010-12-29 | 2010-12-29 | Bearing pre-tightening structure of high-speed electric spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206864160U CN201908960U (en) | 2010-12-29 | 2010-12-29 | Bearing pre-tightening structure of high-speed electric spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201908960U true CN201908960U (en) | 2011-07-27 |
Family
ID=44301163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206864160U Expired - Lifetime CN201908960U (en) | 2010-12-29 | 2010-12-29 | Bearing pre-tightening structure of high-speed electric spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201908960U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088912A (en) * | 2014-07-16 | 2014-10-08 | 广州市昊志机电股份有限公司 | Pre-tightening structure for ball electric main shaft bearing |
| CN105465193A (en) * | 2015-12-30 | 2016-04-06 | 苏州钛盟科技精密模具有限公司 | Steel ball bushing for shock absorber of bicycle |
-
2010
- 2010-12-29 CN CN2010206864160U patent/CN201908960U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088912A (en) * | 2014-07-16 | 2014-10-08 | 广州市昊志机电股份有限公司 | Pre-tightening structure for ball electric main shaft bearing |
| CN105465193A (en) * | 2015-12-30 | 2016-04-06 | 苏州钛盟科技精密模具有限公司 | Steel ball bushing for shock absorber of bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGZHOU HAOZHI ELECTROMECHANICAL SHARES CO., LTD Free format text: FORMER NAME: GUANGZHOU HAOZHI ELECTROMECHANICAL CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 511356 6 Jiangdong Street, Yonghe Economic Zone, Guangzhou economic and Technological Development Zone Patentee after: Guangzhou Haozhi Industrial Co., Ltd. Address before: 510670 301C, main building, No. 111, science Avenue, Guangzhou hi tech Industrial Development Zone, Guangzhou, Guangdong Patentee before: Guangzhou Haozhi Electromechanical Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |
|
| CX01 | Expiry of patent term |