CN201086136Y - Rotating center device - Google Patents
Rotating center device Download PDFInfo
- Publication number
- CN201086136Y CN201086136Y CNU2007200904020U CN200720090402U CN201086136Y CN 201086136 Y CN201086136 Y CN 201086136Y CN U2007200904020 U CNU2007200904020 U CN U2007200904020U CN 200720090402 U CN200720090402 U CN 200720090402U CN 201086136 Y CN201086136 Y CN 201086136Y
- Authority
- CN
- China
- Prior art keywords
- shell
- roller bearing
- housing
- gyroaxis
- bearing
- 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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- Rolling Contact Bearings (AREA)
Abstract
A rotating center device is provided, wherein a roller bearing is arranged on a rotating shaft, a thrust bearing is arranged on the rotating shaft and positioned at the back lower side of the roller bearing, the rotating shaft with the roller bearing and the thrust bearing is inserted into a housing, a frame oil seal and a front cover are integrated as a whole, the front cover of the frame oil seal is fixed at the front end of the housing via a screw, the roller bearing is pressed into a preset space between the housing and the rotating shaft from the bottom end of the housing, and a back cover is threaded at the back end of the housing. The front part of the device is designed with knurls to protect the safety during the installation or disassembly with reasonable structure and good appearance. The tip end is round and solid and is protected from being damaged or toughened during the disassembly and can be positioned accurately.
Description
Technical field:
The utility model relates to a kind of live center, and especially a kind of point of live center is the device of live centre.
Background technology:
At present, the top stationary center that mostly is that uses on the lathe, in use everybody reforms into live center with stationary center again, existing goes out China's application (patent) number by retrieval: 93227714.4 applyings date: 1993.03.29
Open (bulletin) number: CN2153427 open (bulletin) day: 1994.01.19
Application (patent) number: 92245754.9 applyings date: 1992.12.28
Open (bulletin) number: CN2151830 open (bulletin) day: 1994.01.05
Application (patent) number: 95217777.3 applyings date: 1995.9.25
Open (bulletin) number: CN2225917 open (bulletin) day: 1996.5.1
The foregoing invention that many inventors make is all practical, but existing live center device is accurate inadequately, safety coefficient is lower during use, easily cause equipment and top damaging or plucking, the inventor's existing live center device to numerous inventors in practical operation has been made renewal again, make this device, safety and non-easy damaged when locating accurately, assemble and using are installed, can reach comparatively ideal result of use.
The utility model content:
The utility model is accurate inadequately at the live center device that exists in the prior art, safety coefficient is lower during use, easily cause equipment and top damaging or the problem of plucking, the point that a kind of live center is provided is the device of live centre, the point of the live center of this device is a live centre, and be the circle solid, safety and non-easy damaged when locating accurately, assemble and using are installed.Its technical scheme is: roller bearing is assemblied on the gyroaxis, thrust bearing is assemblied on the gyroaxis and is located at the back lower place of roller bearing, the gyroaxis that roller bearing and thrust bearing are installed is inserted in the shell, outside framework oil seal and protecgulum are mounted to one, the protecgulum of outside framework oil seal is fixed on the front end of shell by screw, needle bearing is pressed into the preset clearance of shell and gyroaxis from the rear end of shell, and bonnet is screwed into the rear end of shell, promptly is the live centre device.When the preceding roller bearing of this device and back needle bearing are installed on the gyroaxis, all leave certain interval, bonnet is assembled in the shell block, shortened cone length, the Front-end Design of shell has the annular knurl can be anti-skidding, and top is solid, when work, accurate positioning when unloading workpiece, can be avoided damaging, plucking is top.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is further specified:
Fig. 1 is a structural representation:
Shell 1 gyroaxis 2 roller bearings 3 thrust bearings 4 needle bearings 5,6 protecgulums 7 bonnets 8 outside framework oil seals 9 annular knurls 10 screws 11.
Specific embodiments:
Embodiment of the present utility model is, roller bearing 3 is assemblied on the gyroaxis 2, thrust bearing 4 is assemblied on the gyroaxis 2 and is located at the back lower place of roller bearing 3, the gyroaxis 2 that roller bearing 3 and thrust bearing 4 are installed is inserted in the shell 1, outside framework oil seal 9 and protecgulum 7 are mounted to one, the protecgulum 7 of outside framework oil seal 9 is fixed on the front end of shell 1 by screw 11, needle bearing 5 is pressed into the preset clearance of shell 1 and gyroaxis 2 from the rear end of shell 1, bonnet 8 is screwed into the rear end of shell 1, promptly is the live centre device.
Claims (3)
1. live centre device, it is characterized in that: roller bearing (3) is assemblied on the gyroaxis (2), thrust bearing (4) is assemblied in the back lower place that roller bearing (3) were gone up and be located to gyroaxis (2), the gyroaxis (2) that roller bearing (3) and thrust bearing (4) are installed is inserted in the shell (1), outside framework oil seal (9) and protecgulum (7) are mounted to one, the protecgulum (7) of outside framework oil seal (9) is fixed on the front end of shell (1) by screw (11), needle bearing (5) is pressed into the preset clearance of shell (1) and gyroaxis (2) from the rear end of shell (1), bonnet (8) is screwed into the rear end of shell (1), promptly is the live centre device.
2. a kind of live centre device according to claim 1 is characterized in that: the anterior design of shell (1) has annular knurl (10) line.
3. a kind of live centre device according to claim 1 is characterized in that: the live centre end is the circle solid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200904020U CN201086136Y (en) | 2007-05-21 | 2007-05-21 | Rotating center device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200904020U CN201086136Y (en) | 2007-05-21 | 2007-05-21 | Rotating center device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201086136Y true CN201086136Y (en) | 2008-07-16 |
Family
ID=39633725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200904020U Expired - Fee Related CN201086136Y (en) | 2007-05-21 | 2007-05-21 | Rotating center device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201086136Y (en) |
-
2007
- 2007-05-21 CN CNU2007200904020U patent/CN201086136Y/en not_active Expired - Fee Related
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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: 20080716 Termination date: 20110521 |