CN2772727Y - Grinding machine head carriage of high-precision conical static-pressure bearing - Google Patents
Grinding machine head carriage of high-precision conical static-pressure bearing Download PDFInfo
- Publication number
- CN2772727Y CN2772727Y CN 200520040125 CN200520040125U CN2772727Y CN 2772727 Y CN2772727 Y CN 2772727Y CN 200520040125 CN200520040125 CN 200520040125 CN 200520040125 U CN200520040125 U CN 200520040125U CN 2772727 Y CN2772727 Y CN 2772727Y
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- China
- Prior art keywords
- main shaft
- oil
- oil cylinder
- pressure
- bearing
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- Expired - Lifetime
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model discloses a grinding machine head frame of a high-precision conical static-pressure bearing. The utility model is characterized in that a front and a back bearings of a main shaft are small-hole and throttling conical static-pressure bearings of a slit type, the back end of the main shaft is provided with an oil cylinder, a static-pressure end surface bearing is arranged between the oil cylinder and the main shaft, and a front and a back oil cavity points of the oil cylinder are provided with an oil inlet hole and an oil outlet hole. Because the front and the back bearings of the main shaft are small-hole and throttling conical static-pressure bearings of a slit type, the main shaft of the grinding machine head frame has high rotation precision, high rigidity and high carrying capability. The back end of the main shaft is provided with the oil cylinder, the static-pressure end surface bearing is arranged between the oil cylinder and the main shaft, the front and the back oil cavity points of the oil cylinder body are provided with the oil inlet and the oil outlet holes of the pressure oil, so, the main shaft can be moved backwards and forwards. When the main shaft needs to rotate, the back cavity of the oil cylinder is fed with the oil, the main shaft is moved forward, and the static-pressure bearing is established when a given gap is achieved. When the main shaft needs to lock, the front cavity of the oil cylinder is fed with the oil, the main shaft is moved backwards, the gap of the main shaft and the bearing is eliminated, the stability is enhanced and the functions of rotating and not rotating of the main shaft are achieved.
Description
Technical field
The utility model relates to a kind of high accuracy circular cone hydrostatic bearing grinding machine headstock, especially relates to headstock spindle and has commentaries on classics and do not change the grinding machine headstock of two kinds of functions.
Background technology
At present, headstock structure main shaft bearing commonly used on common universal grinding machine external mostly is rolling bearing or a roll and a slide bearing, and bearing capacity is little, and rotating accuracy is not high; Headstock structure main shaft bearing commonly used on the small dimension high precision universal cylindrical grinder mostly is dynamic and hydrostatic bearing, this structure is when main shaft low speed and high speed rotary, the trace skew can take place in main-shaft axis, and these two kinds of structures are man-operated mechanism locking main shaft when wanting main shaft not change.
Summary of the invention
The purpose of this utility model is in order to overcome the shortcoming of headstock structure commonly used on the existing universal grinding machine external, provide one can make the spindle rotation accuracy height, good rigidly, bearing capacity is big, main-shaft axis is not subjected to the influence of the speed of mainshaft, and headstock spindle is had change and do not change the high accuracy circular cone hydrostatic bearing grinding machine headstock of two kinds of functions.
The technical solution of the utility model is, the high accuracy circular cone hydrostatic bearing grinding machine headstock, it is made up of the front and back bearings that is equipped with on top, fuselage, main shaft and the main shaft, be characterized in, the front and back bearings of described main shaft is a clearance type orifice restriction circular cone hydrostatic bearing, the rear end of main shaft is equipped with oil cylinder, is equipped with static pressure end face bearing between oil cylinder and the main shaft, is equipped with at oil pocket place, the front and back of cylinder block for pressure oil turnover oilhole.
The beneficial effects of the utility model: because the front and back bearings of described main shaft is a clearance type orifice restriction circular cone hydrostatic bearing, make grinding machine headstock spindle rotation accuracy height, good rigidly, bearing capacity is big, and main-shaft axis is not subjected to the influence of the speed of mainshaft; Because the rear end of main shaft is equipped with oil cylinder, be equipped with static pressure end face bearing between oil cylinder and the main shaft again, be equipped with at oil pocket place, the front and back of cylinder block for pressure oil turnover oilhole.This can move forward and backward main shaft.When the need main shaft rotates, the oil-feed of oil cylinder back cavity, with the main shaft reach, when reaching the gap of setting, hydrostatic bearing is set up; When the need principal shaft locking, the oil-feed of oil cylinder ante-chamber will move behind the main shaft, eliminates the gap of main shaft and bearing, improves stability, and this structure has reached main shaft changes and the function of not changeing.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a vertical section of the present utility model structural map.
The specific embodiment
The high accuracy circular cone hydrostatic bearing grinding machine headstock, by shown in Figure 1, it is made up of the front and back bearings 2,7 that is equipped with on top 16, fuselage 15, main shaft 1 and the main shaft 1, it is characterized in that, the front and back bearings 2,7 of described main shaft 1 is a clearance type orifice restriction circular cone hydrostatic bearing, the rear end of main shaft 1 is equipped with oil cylinder 14, be equipped with static pressure end face bearing 13 between oil cylinder 14 and main shaft 1 rear end, be equipped with for pressure oil turnover oilhole at oil pocket place, the front and back of cylinder block, it comprises oil cylinder front end fuel feed hole 8, oil cylinder rear end fuel feed hole 11, end face bearing fuel feed hole 10.Be equipped with flow controller 3,6 and fuel feed hole 4,5 in the front and back bearings 2,7 respectively.In Fig. 1,11 oil-feeds of oil cylinder 14 rear end fuel feed holes, with main shaft 1 reach, when the gap that reaches setting (by adjusting pad 12 control gap sizes), the circular cone hydrostatic bearing of high accuracy, high rigidity is set up, and this moment, headstock spindle 1 was rotatable; Oil cylinder 14 front end fuel feed hole oil-feeds will move behind the main shaft 1, and the taper seat on the main shaft 1 is contacted simultaneously with fore bearing 2, rear bearing 7 taper holes, and this moment, main shaft 1 pinning can not be rotated, and having reached main shaft changes and the function of not changeing.Described pressure oil oil-feed is finished by the electrical control hydraulic buttery valve.
Claims (2)
1, a kind of high accuracy circular cone hydrostatic bearing grinding machine headstock, it is by the front and back bearings (2,7) that is equipped with on top (16), main shaft (1) and the main shaft (1), fuselage (15) is formed, it is characterized in that, the front and back bearings of described main shaft (1) (2,7) is a clearance type orifice restriction circular cone hydrostatic bearing, the rear end of main shaft (1) is equipped with oil cylinder (14), is equipped with static pressure end face bearing (13) between oil cylinder (14) and main shaft (1) rear end, is equipped with at oil pocket place, the front and back of cylinder block for pressure oil turnover oilhole.
2, the high accuracy circular cone hydrostatic bearing grinding machine headstock according to claim 1, it is characterized in that, the oil pocket place, front and back of described cylinder block is equipped with for pressure oil turnover oilhole, comprises oil cylinder front end fuel feed hole (8), oil cylinder rear end fuel feed hole (11), end face bearing fuel feed hole (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520040125 CN2772727Y (en) | 2005-03-14 | 2005-03-14 | Grinding machine head carriage of high-precision conical static-pressure bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520040125 CN2772727Y (en) | 2005-03-14 | 2005-03-14 | Grinding machine head carriage of high-precision conical static-pressure bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2772727Y true CN2772727Y (en) | 2006-04-19 |
Family
ID=36707982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520040125 Expired - Lifetime CN2772727Y (en) | 2005-03-14 | 2005-03-14 | Grinding machine head carriage of high-precision conical static-pressure bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2772727Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429044C (en) * | 2006-08-28 | 2008-10-29 | 上海机床厂有限公司 | High precision overloading composite bearing structure |
| CN102513555A (en) * | 2011-12-29 | 2012-06-27 | 重庆机床(集团)有限责任公司 | High-speed and high-rigidity main shaft system rotary support structure |
| CN102581316A (en) * | 2011-11-30 | 2012-07-18 | 威海华东数控股份有限公司 | Spindle box for extra-heavy numerical control horizontal lathe |
| CN102601729A (en) * | 2012-03-28 | 2012-07-25 | 常州博瑞油泵油嘴有限公司 | Axial elastic precise positioning clamping device for needle valve parts |
| CN103357969A (en) * | 2012-03-26 | 2013-10-23 | 宜昌长机科技有限责任公司 | Active-moving static pressure device of gear shaper |
| CN106363491A (en) * | 2016-11-30 | 2017-02-01 | 广州市花都全球自动变速箱有限公司 | Polishing and grinding device for automatic gearbox shell |
| CN107553321A (en) * | 2017-08-31 | 2018-01-09 | 广州市昊志机电股份有限公司 | A kind of grinding machine head stock frame structure |
| CN111070091A (en) * | 2019-12-25 | 2020-04-28 | 广州市昊志机电股份有限公司 | Movable center tailstock, tailstock system and machine tool |
-
2005
- 2005-03-14 CN CN 200520040125 patent/CN2772727Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429044C (en) * | 2006-08-28 | 2008-10-29 | 上海机床厂有限公司 | High precision overloading composite bearing structure |
| CN102581316A (en) * | 2011-11-30 | 2012-07-18 | 威海华东数控股份有限公司 | Spindle box for extra-heavy numerical control horizontal lathe |
| CN102513555A (en) * | 2011-12-29 | 2012-06-27 | 重庆机床(集团)有限责任公司 | High-speed and high-rigidity main shaft system rotary support structure |
| CN103357969A (en) * | 2012-03-26 | 2013-10-23 | 宜昌长机科技有限责任公司 | Active-moving static pressure device of gear shaper |
| CN102601729A (en) * | 2012-03-28 | 2012-07-25 | 常州博瑞油泵油嘴有限公司 | Axial elastic precise positioning clamping device for needle valve parts |
| CN106363491A (en) * | 2016-11-30 | 2017-02-01 | 广州市花都全球自动变速箱有限公司 | Polishing and grinding device for automatic gearbox shell |
| CN107553321A (en) * | 2017-08-31 | 2018-01-09 | 广州市昊志机电股份有限公司 | A kind of grinding machine head stock frame structure |
| CN107553321B (en) * | 2017-08-31 | 2019-10-18 | 广州市昊志机电股份有限公司 | A kind of grinding machine head stock frame structure |
| CN111070091A (en) * | 2019-12-25 | 2020-04-28 | 广州市昊志机电股份有限公司 | Movable center tailstock, tailstock system and machine tool |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150314 Granted publication date: 20060419 |