CN201255181Y - Thrust ball bearing for principal axis of machine tool - Google Patents
Thrust ball bearing for principal axis of machine tool Download PDFInfo
- Publication number
- CN201255181Y CN201255181Y CNU200820012505XU CN200820012505U CN201255181Y CN 201255181 Y CN201255181 Y CN 201255181Y CN U200820012505X U CNU200820012505X U CN U200820012505XU CN 200820012505 U CN200820012505 U CN 200820012505U CN 201255181 Y CN201255181 Y CN 201255181Y
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- CN
- China
- Prior art keywords
- bearing
- machine tool
- main shaft
- thrust ball
- principal axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Support Of The Bearing (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to a thrust ball bearing for a machine tool spindle, which mainly comprises a principal axis (1), a bearing shaft washer (2), a steel ball component (3), a bearing race (4) and a machine tool case (5), and is characterized in that the gap between the inside diameter d2 of the bearing race (4) and the diameter d1 of the principal axis (1) is 0.4mm to 0.6mm, optimally 0.5mm. The utility model has the beneficial effect that two ferrules of the bearing keep concentric in the assembly process of the principal axis so that the service life of the main shaft bearing is prolonged.
Description
Technical field
The utility model belongs to bearing products development technique field, relates to a kind of thrust ball bearing that improves the machine tool chief axis life-span.
Background technique
At present, the contour structure size of the thrust ball bearing used of domestic machine tool chief axis is a boundary dimension of selecting bearing according to NBS " GB/T301 rolling bearing thrust ball bearing boundary dimension ".If such structural type is used under the situation of the non-cooperation of horizontal main axis and outer ring, then in the spindle mounted process, owing to there is very big gap (ordinary circumstance has several millimeters gaps) between seat ring internal diameter and the main shaft, seat ring freely hangs down into main spindle's under action of gravity, the raceway decentraction that can cause seat ring and blowout patche, cause the unbalance loading of bearing, reduced the working life of bearing.
Summary of the invention
The purpose of this utility model provides a kind of thrust ball bearing for machine tool main shaft, can make bearing in assembly process, and the sag of chain of bearing race is controlled at minimum, and two lassos of bearing keep with one heart, and then prolong the working life of main shaft bearing.
In order to achieve the above object, the technical solution of the utility model is as follows:
A kind of thrust ball bearing for machine tool main shaft mainly is made up of main shaft, bearing blowout patche, steel ball component, bearing race and lathe casing, and the inner diameter d 2 and the gap between the main shaft diameter d 1 of bearing race are 0.4～0.6 millimeter, and the best is 0.5 millimeter.
The beneficial effects of the utility model are: two lassos of bearing are kept in the assembly process of main shaft with one heart, prolonged the working life of main shaft bearing.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1. main shaft, 2. bearing blowout patche, 3. steel ball component, 4. bearing race, 5. lathe casing.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described below in detail:
As shown in Figure 1, a kind of thrust ball bearing for machine tool main shaft of the present utility model, mainly form by main shaft 1, bearing blowout patche 2, steel ball component 3, bearing race 4 and lathe casing 5, thrust ball bearing is under the immovable situation of the structure of lathe integral body, the difference of the inner diameter d 2 of thrust ball race 4 and the diameter d 1 of main shaft 1 is adjusted into 0.5 millimeter, bearing race 4 is abutted against on the lathe casing 5, steel ball component 3 is close to bearing race 4, to be close to steel ball component 3 after main shaft 1 and bearing blowout patche 2 interference fit, can carry out work after bearing is applied axial preload.Utilize bearing structure of the present utility model, can guarantee that in the process of running in bearings main shaft diameter d 1 does not interfere with the inner diameter d 2 of bearing race 4 when rotated, can guarantee the concentricity of bearing race 4 and bearing blowout patche 2 again, thus reduced widely main shaft bearing in installation process because the nonconcentricity of the blowout patche 2 that the lasso deadweight causes and seat ring 4.
Claims (2)
1, a kind of thrust ball bearing for machine tool main shaft, mainly form by main shaft (1), bearing blowout patche (2), steel ball component (3), bearing race (4) and lathe casing (5), it is characterized in that the gap between the diameter d 1 of the inner diameter d 2 of bearing race (4) and main shaft (1) is 0.4～0.6 millimeter.
2, a kind of thrust ball bearing for machine tool main shaft as claimed in claim 1 is characterized in that, described gap is 0.5 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820012505XU CN201255181Y (en) | 2008-04-30 | 2008-04-30 | Thrust ball bearing for principal axis of machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820012505XU CN201255181Y (en) | 2008-04-30 | 2008-04-30 | Thrust ball bearing for principal axis of machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201255181Y true CN201255181Y (en) | 2009-06-10 |
Family
ID=40738498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820012505XU Expired - Lifetime CN201255181Y (en) | 2008-04-30 | 2008-04-30 | Thrust ball bearing for principal axis of machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201255181Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362955A (en) * | 2012-04-08 | 2013-10-23 | 宁波市镇海捷登应用技术研究所 | Thrust bearing and lubricating device thereof |
-
2008
- 2008-04-30 CN CNU200820012505XU patent/CN201255181Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362955A (en) * | 2012-04-08 | 2013-10-23 | 宁波市镇海捷登应用技术研究所 | Thrust bearing and lubricating device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090610 Effective date of abandoning: 20080430 |