CN202021346U - Main shaft device with hydrostatic bearings - Google Patents
Main shaft device with hydrostatic bearings Download PDFInfo
- Publication number
- CN202021346U CN202021346U CN2010206666687U CN201020666668U CN202021346U CN 202021346 U CN202021346 U CN 202021346U CN 2010206666687 U CN2010206666687 U CN 2010206666687U CN 201020666668 U CN201020666668 U CN 201020666668U CN 202021346 U CN202021346 U CN 202021346U
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- CN
- China
- Prior art keywords
- main shaft
- hydrostatic bearing
- sleeve
- bearings
- hydrostatic
- 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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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model relates to a machine tool main shaft, especially to a main shaft device used in a precision machine tool. In the prior art, rolling bearings are generally adopted in a machine tool main shaft. The processing precision of main shaft devices in the prior art can not be guaranteed, and the devices are easy to wear and the service lifetime is short. The main shaft device with a hydrostatic bearing includes a main shaft, a hydrostatic bearing 1 and a hydrostatic bearing 2 respectively disposed on two sides of the main shaft, a sleeve fixedly installed outside the hydrostatic bearings. The hydrostatic bearings and the sleeve are in an interference fit. An oil pocket receiving oil is arranged on the sleeve. In the utility model, sliding bearings are replaced with the hydrostatic bearings. Oil slick is filled between the main shaft and the bearings as well as the sleeve. The shaft rotates under the support of the oil slick, thus has advantages of long service lifetime, high precision, and stable revolving.
Description
Technical field
The utility model relates to a kind of machine tool chief axis, and is especially relevant with a kind of main shaft device that is used for precision machine tool.
Background technology
The machining accuracy of lathe depends primarily on the precision of main shaft itself, and the main shaft of lathe generally adopts rolling bearing at present, and this device machining accuracy can not guarantee, and wearing and tearing are big, and service life is not long.
Summary of the invention
The purpose of this utility model will solve above-mentioned existing various weak points exactly, and the main shaft device of the band hydrostatic bearing of a kind of precision height, long service life is provided, for this reason, the utility model by the following technical solutions:
A kind of main shaft device with hydrostatic bearing comprises main shaft, is respectively arranged with hydrostatic bearing one, hydrostatic bearing two at the main shaft two ends, at hydrostatic bearing one, two fixed outside installing sleeves.
As the further of such scheme improved and replenish, the utility model also comprises following additional technical feature:
Described hydrostatic bearing one, two and sleeve are interference fit.
Described sleeve is provided with the oil pocket of oiling.
When the utility model uses, be full of oil film in the oil pocket between main shaft and bearing, sleeve,, can refuel to main shaft and bearing, make main shaft be in work under the oil bath state by sleeve by the rotation of oil film supports main shaft.
Use the utility model can reach following beneficial effect: this device has replaced sliding bearing with hydrostatic bearing, because of being full of oil film between main shaft and bearing, sleeve,, make main shaft have long service life by the rotation of oil film back shaft, the precision height, advantage such as it is steady to turn round.
Description of drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is hydrostatic bearing one structural representation in the utility model.
Fig. 3 is hydrostatic bearing two structural representations in the utility model.
Among the figure: 1, main shaft; 2, hydrostatic bearing one; 3, sleeve; 4, hydrostatic bearing two.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in detail.
As Figure 1-3, the utility model comprises main shaft 1, be respectively arranged with hydrostatic bearing 1, hydrostatic bearing 24 at main shaft 1 two ends, at hydrostatic bearing 1, hydrostatic bearing 24 fixed outside installing sleeves 3, hydrostatic bearing 1, hydrostatic bearing 24 are interference fit with sleeve 3, and sleeve 3 is provided with the oil pocket of oiling.
When the utility model uses, be full of oil film in the oil pocket of the shaft room of main shaft 1 and hydrostatic bearing 1, hydrostatic bearing 24, by the rotation of oil film supports main shaft 1, can refuel to main shaft 3 and hydrostatic bearing 1, hydrostatic bearing 24 by sleeve 3, main shaft 1 is in the oil bath state under works.
Claims (3)
1. the main shaft device with hydrostatic bearing comprises main shaft (1), it is characterized in that: be respectively arranged with hydrostatic bearing one (2), hydrostatic bearing two (4) at main shaft (1) two ends, at hydrostatic bearing one, two (2,4) fixed outside installing sleeves (3).
2. a kind of main shaft device with hydrostatic bearing according to claim 1 is characterized in that: hydrostatic bearing one, two (2,4) is an interference fit with sleeve (3).
3. a kind of main shaft device with hydrostatic bearing according to claim 1 is characterized in that: sleeve (3) is provided with the oil pocket of oiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206666687U CN202021346U (en) | 2010-12-19 | 2010-12-19 | Main shaft device with hydrostatic bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206666687U CN202021346U (en) | 2010-12-19 | 2010-12-19 | Main shaft device with hydrostatic bearings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202021346U true CN202021346U (en) | 2011-11-02 |
Family
ID=44846316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206666687U Expired - Fee Related CN202021346U (en) | 2010-12-19 | 2010-12-19 | Main shaft device with hydrostatic bearings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202021346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513553A (en) * | 2011-12-07 | 2012-06-27 | 燕山大学 | High-speed spindle with tapered hole capable of being automatically locked |
-
2010
- 2010-12-19 CN CN2010206666687U patent/CN202021346U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513553A (en) * | 2011-12-07 | 2012-06-27 | 燕山大学 | High-speed spindle with tapered hole capable of being automatically locked |
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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: 20111102 Termination date: 20111219 |