CN200991761Y - Machine tool main axle device - Google Patents
Machine tool main axle device Download PDFInfo
- Publication number
- CN200991761Y CN200991761Y CN 200620164934 CN200620164934U CN200991761Y CN 200991761 Y CN200991761 Y CN 200991761Y CN 200620164934 CN200620164934 CN 200620164934 CN 200620164934 U CN200620164934 U CN 200620164934U CN 200991761 Y CN200991761 Y CN 200991761Y
- Authority
- CN
- China
- Prior art keywords
- spindle
- bearing
- machine tool
- angular contact
- contact ball
- 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 - Fee Related
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- Support Of The Bearing (AREA)
Abstract
Disclosed is a machine tool spindle apparatus which pertains to a spindle apparatus of the machine tool. The utility model has two angular contact ball bearings (6) being arranged back-to-back behind the double row tapered roller bearings (5), an internal ring sleeve gasket (7) and an external ring sleeve gasket (8) are provided between the two angular contact ball bearings (6). The utility model has advantages of that it can save the capital under the condition of not reducing precision of the machine tool spindle. The utility model simplifies the assembling art, the bearing precision has a rather large extent of margins, and the spindle precision has a certain improvement. The production and procurement costs are significantly reduced, and the supporting stiffness and the rotation accuracy are improved for changing the axial direction or the radial direction supporting stiffness of the spindle conveniently. The bearing is easy to be lubricated, and the rotate speed of the spindle can be raised by over 25 per cent under the same temperature rising condition for the spindle.
Description
Technical field
The utility model relates to the machine tool chief axis device.
Background technology
In lathe is manufactured, main shaft in the lathe generally all adopts the bearing configuration of Fig. 1, front end at machine tool chief axis, bearing on the main shaft generally all is with the radial support location of high accuracy double-row conical bearing as main shaft, axially, keep the axial precision and the radial accuracy of main shaft with high-precision angular contact thrust ball bearing (can two-wayly locate).Use this bearing configuration, can further improve the bearing capacity and the lathe rigidity of bearing.Especially the bearing of front-end of spindle disposes, and is most important to the performance of main shaft, wherein plays the thrust angular contact bearing (TAC pattern) of axial location, and this kind bearing is used very wide in main shaft, is the Typical Disposition of universal main shaft, and amount is big and application surface is extensive.But processing technology is very complicated, causes cost extremely expensive, and since the bearing self structure, this bearing, very long in the Production of bearing cycle of diameter more than 200, the compression nargin of precision is not high, the assembly process process complexity,
Summary of the invention
The purpose of this utility model just provides a kind of in the axial precision and radial accuracy that guarantee main shaft, adopts the machine tool chief axis device of two angular contact ball bearings.
Realize that the utility model purpose solution is that front end at main shaft is provided with double-row conical bearing (5), two angular contact ball bearings (6) particularly are installed back-to-back, ring spacer (7) and outer shroud spacer (8) between two angular contact ball bearings (6), being provided with behind double-row conical bearing (5).
Between double-row conical bearing (5) and angular contact ball bearing (6), be equipped with inner ring sleeve (10) and outside ring set (9).
Advantage of the present utility model is not reduce under the situation of machine tool chief axis precision, can economize on the use of funds.Simplify assembly technology, bearing accuracy deposit nargin is bigger, and the main shaft precision improves.Can reduce production costs greatly, improve support stiffness and rotating accuracy,, can change the axial or radial support rigidity of main shaft easily because the support stiffness of bearing can be adjusted by the axial distance that changes between the two bearings.Bearing is easier to lubricate, and under identical main shaft temperature rise situation, the speed of mainshaft can improve more than 25%.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the bearing configuration structure of existing lathe.
In Fig. 2: main shaft 1, casing 2, biserial angular contact thrust ball bearing 3, spacer 4, double-row conical bearing 5.
The specific embodiment
(as Fig. 1) is provided with double-row conical bearing 5 at the front end of main shaft 1, in the back of double-row conical bearing 5 two angular contact ball bearings 6 is installed back-to-back, ring spacer 7 and outer shroud spacer 8 in being provided with between two angular contact ball bearings 6.Between angular contact ball bearing 6 and double-row conical bearing 5, be provided with inner ring sleeve 10 and outside ring set 9.The thin and thick of ring spacer 7 and outer shroud spacer 8 just can be adjusted two distances between the angular contact ball bearing 6 in adjusting, thereby reaches the support stiffness of adjusting bearing.
Claims (2)
1, a kind of machine tool chief axis device, front end at main shaft is provided with double-row conical bearing (5), it is characterized in that two angular contact ball bearings (6) are installed back-to-back ring spacer (7) and outer shroud spacer (8) between two angular contact ball bearings (6), being provided with behind double-row conical bearing (5).
2,, it is characterized in that being equipped with between said double-row conical bearing (5) and the angular contact ball bearing (6) inner ring sleeve (10) and outer ring set (9) according to the said machine tool chief axis device of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620164934 CN200991761Y (en) | 2006-12-25 | 2006-12-25 | Machine tool main axle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620164934 CN200991761Y (en) | 2006-12-25 | 2006-12-25 | Machine tool main axle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200991761Y true CN200991761Y (en) | 2007-12-19 |
Family
ID=38944839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620164934 Expired - Fee Related CN200991761Y (en) | 2006-12-25 | 2006-12-25 | Machine tool main axle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200991761Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942313A (en) * | 2015-06-30 | 2015-09-30 | 江苏元利数控机床有限公司 | Mechanism for main shaft high-speed operation and assembling method and using method thereof |
-
2006
- 2006-12-25 CN CN 200620164934 patent/CN200991761Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942313A (en) * | 2015-06-30 | 2015-09-30 | 江苏元利数控机床有限公司 | Mechanism for main shaft high-speed operation and assembling method and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071219 Termination date: 20121225 |