CN201604026U - Back clearance eliminating device for X-axis drive gear box of machine tool - Google Patents
Back clearance eliminating device for X-axis drive gear box of machine tool Download PDFInfo
- Publication number
- CN201604026U CN201604026U CN2009202771198U CN200920277119U CN201604026U CN 201604026 U CN201604026 U CN 201604026U CN 2009202771198 U CN2009202771198 U CN 2009202771198U CN 200920277119 U CN200920277119 U CN 200920277119U CN 201604026 U CN201604026 U CN 201604026U
- Authority
- CN
- China
- Prior art keywords
- gear shaft
- machine tool
- drive gear
- gear box
- back clearance
- 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
The utility model relates to a back clearance eliminating device for an X-axis drive gear box of a machine tool, which belongs to the field of machine tool equipment. A gear shaft II is included and supported by an upper needle roller bearing and a lower needle roller bearing, a thrust bearing is fixed on a gear shaft I on the upper side of the upper needle roller bearing, a sleeve is sleeved on the gear shaft I at the upper end of the thrust bearing, a disk spring is mounted in the sleeve, and a nut is screwed at the end part of the gear shaft I and presses the disk spring inside the sleeve. The utility model has the advantages as follows: the pre-compression force is exerted on the thrust bearing through the spring; through the back clearance mechanism, shock and vibration during the running process of the machine tool can be prevented from influencing the motion precision and the service life of the X-axis drive gear box.
Description
Technical field
The utility model relates to machine tool field, vibration and impact device to the influence of the bearing of X-axis uni-drive gear box and gear in especially a kind of X-axis running that can effectively improve lathe.
Background technology
As everyone knows, in the anti-backlash mechanism of present X-axis uni-drive gear box, precompression is that hand of spiral pair of opposite helical gear moves vertically on the pulling same axis by screw thread extruding thrust bearing, to reach the purpose of eliminating back clearance.But because precompression is a rigidity, vibration in the lathe running and impact will directly influence the kinematic accuracy and the service life of X-axis uni-drive gear box.
Summary of the invention
For the precision and the life-span that overcome the vibration in the lathe running and impact the X-axis uni-drive gear box influence, the utility model provides a kind of device for eliminating back clearance of X-shaft drive gear box of machine tool, precompression is applied on the thrust bearing by spring, and this anti-backlash mechanism can be eliminated the vibration in the lathe running and impact the kinematic accuracy of X-axis uni-drive gear box and the influence in service life.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of device for eliminating back clearance of X-shaft drive gear box of machine tool, be provided with gear shaft, gear shaft reaches down through last needle bearing, and needle bearing supports jointly, be fixed with thrust bearing on the gear shaft of last needle bearing upside, be set with cover on the gear shaft of thrust bearing upper end, disk spring is installed in the cover, and the gear shaft end is combined with nut, and nut is compressed in disk spring in the cover.
The utility model also can be realized by following measure: nut radially be processed with threaded through hole, be combined with holding screw in the through hole.
The beneficial effects of the utility model are, precompression is applied on the thrust bearing by spring, and this anti-backlash mechanism can be eliminated the vibration in the lathe running and impact the kinematic accuracy of X-axis uni-drive gear box and the influence in service life.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1, configuration state figure of the present utility model.
1. gear shafts among the figure, 2. thrust bearing, 3. cover, 4. disk spring, 5. pad, 6. nut, 7. holding screw is 8. gone up needle bearing, 9. descends needle bearing.
The specific embodiment
In Fig. 1, the utility model is provided with gear shaft 2, gear shaft 2 reaches down through last needle bearing 8, and needle bearing 9 supports jointly, be fixed with thrust bearing 2 on the gear shaft 1 of last needle bearing 8 upsides, be set with 3 on the gear shaft 1 of thrust bearing 2 upper ends, the inner chamber of cover 3 is equipped with disk spring 4, disk spring 4 tops are provided with pad 5, gear shaft 1 end is combined with nut 6, nut 6 is compressed in disk spring 4 in the cover 3 through filling up 5, nut 6 radially be processed with threaded through hole, be combined with holding screw 7 in the through hole.
When the utility model will be eliminated back clearance, holding screw 7 is unclamped, compress disk spring 4 with special spanner rotating nut 6 by filling up 5, the axial freedom of cover 3 is limited by thrust bearing 2, during fastening nut 6, driven gear axle 1 moved up reaches the purpose of eliminating back clearance, adjusts when finishing holding screw 7 is tightened, and prevents that nut 6 gets loose in the lathe running.Gear shaft 1 is by needle bearing 8 and 9 supportings, and is removable in axially certain scope.Eliminating the required axial pre tightening force of back clearance is to be provided by thrust bearing 2, is applied on the gear shaft 1 by disk spring 4, and disk spring 4 can effectively be eliminated in the lathe running shock and vibration to the precision of X-axis uni-drive gear box and the influence in service life.
Claims (1)
1. device for eliminating back clearance of X-shaft drive gear box of machine tool, be provided with gear shaft, it is characterized in that: gear shaft needle bearing under last needle bearing reaches supports jointly, be fixed with thrust bearing on the gear shaft of last needle bearing upside, be set with cover on the gear shaft of thrust bearing upper end, disk spring is installed in the cover, and the gear shaft end is combined with nut, and nut is compressed in disk spring in the cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202771198U CN201604026U (en) | 2009-12-04 | 2009-12-04 | Back clearance eliminating device for X-axis drive gear box of machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202771198U CN201604026U (en) | 2009-12-04 | 2009-12-04 | Back clearance eliminating device for X-axis drive gear box of machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201604026U true CN201604026U (en) | 2010-10-13 |
Family
ID=42948734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202771198U Expired - Fee Related CN201604026U (en) | 2009-12-04 | 2009-12-04 | Back clearance eliminating device for X-axis drive gear box of machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201604026U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101758416A (en) * | 2009-12-04 | 2010-06-30 | 威海华东数控股份有限公司 | Device for eliminating back clearance of X-shaft drive gear box of machine tool |
| CN103753333A (en) * | 2013-11-28 | 2014-04-30 | 芜湖恒升重型机床股份有限公司 | Backlash elimination structure for gear drive mechanism |
-
2009
- 2009-12-04 CN CN2009202771198U patent/CN201604026U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101758416A (en) * | 2009-12-04 | 2010-06-30 | 威海华东数控股份有限公司 | Device for eliminating back clearance of X-shaft drive gear box of machine tool |
| CN103753333A (en) * | 2013-11-28 | 2014-04-30 | 芜湖恒升重型机床股份有限公司 | Backlash elimination structure for gear drive mechanism |
| CN105108554A (en) * | 2013-11-28 | 2015-12-02 | 芜湖恒升重型机床股份有限公司 | Gear backlash eliminating structure for gear transmission mechanism |
| CN103753333B (en) * | 2013-11-28 | 2016-02-24 | 芜湖恒升重型机床股份有限公司 | The elimination backlash structure of gear drive |
| CN105108554B (en) * | 2013-11-28 | 2017-03-29 | 芜湖恒升重型机床股份有限公司 | The elimination backlash structure of gear drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101013 Termination date: 20141204 |
|
| EXPY | Termination of patent right or utility model |