CN2153427Y - High precision live centre - Google Patents
High precision live centre Download PDFInfo
- Publication number
- CN2153427Y CN2153427Y CN 93227714 CN93227714U CN2153427Y CN 2153427 Y CN2153427 Y CN 2153427Y CN 93227714 CN93227714 CN 93227714 CN 93227714 U CN93227714 U CN 93227714U CN 2153427 Y CN2153427 Y CN 2153427Y
- Authority
- CN
- China
- Prior art keywords
- bearing
- radial ball
- ball bearing
- housing
- conical roller
- 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
Links
Landscapes
- Rolling Contact Bearings (AREA)
- Support Of The Bearing (AREA)
Abstract
The utility model relates to a high precision live centre. A single row radial ball bearing and a conical roller bearing are arranged between a casing and a centre shaft; the single row radial ball bearing is arranged inwardly, and the conical roller bearing is arranged outwardly; the side face of the inner ring of the conical roller bearing is provided with an adjusting washer; a minityped radial ball bearing is arranged in a Morse's cone. The bearings of the utility model is arranged reasonably, the conical roller bearing and the radial ball bearing play a mutual compensation effect in the process of bearing wear, the machining precision is increased, and simultaneously the service life is increased by more than 2.5 times.
Description
The utility model relates to a kind of machine tool accessories, particularly a kind of high accuracy live center.
Two bearings are installed between tail spindle and the housing in traditional live center, one of them is single-row thrust ball bearing axle, and another is a taper roll bearing, simultaneously between its end cap and the housing with thread connection, usually because of vibrations make end cap loosening, cause the phenomenon of forging a knife in the course of the work.In addition because bearing configuration unreasonable, make top when work circular runout bigger, machining accuracy is reduced, being equipped with in this in addition top Morse's cone handle is needle bearing, has more increased the weight of above-mentioned phenomenon.
The purpose of this utility model provides a kind of live center of new structure, and it can overcome existing shortcoming in the above-mentioned prior art, improves machining accuracy, increases the service life.
The purpose of this utility model be achieved in that it by with Morse's cone sports association be that housing, tail spindle and the bearing of one formed, it is characterized in that being equipped with between housing and the tail spindle single-row radial ball bearing and a taper roll bearing, single-row radial ball bearing is interior, and taper roll bearing outside, the adjustment packing ring is equipped with in inner ring side at taper roll bearing, and miniature radial ball bearing is housed in the Morse's cone body.
For convenient disassembly, the dismounting nut is housed in the bottom of housing.
Bearing configuration of the present utility model rationally, in the long-term course of work, taper roll bearing and radial ball bearing play compensating action mutually in bearing wear, therefore can guarantee that the live center long-term operation normally reaches the assurance machining accuracy, on the basis that guarantees machining accuracy, can improve more than 1.5 times service life.In addition because of selecting micro rolling ball bearing for use in the Morse's cone handle, also be greatly improved than the precision of needle bearing, so use of the present utility model can make the machining accuracy of lathe be greatly improved.
Below in conjunction with accompanying drawing the utility model is done a step explanation.
Fig. 1 is the structural representation of a kind of specific embodiment of the present utility model.
1 is tail spindle among the figure, the 10th, with the Morse's cone body be the housing of one, a single-row radial ball bearing 6 and a taper roll bearing 4 are housed between housing and tail spindle, adjustment packing ring 5 is housed in the inner ring side of taper roll bearing, end cap 2 is pressed on the housing, and asphalt felt 3 is housed, and miniature radial ball bearing 8 and packing ring 9 are housed in the Morse's cone body, at housing bottom dismounting nut 7 is housed.
Claims (2)
1, a kind of high accuracy live center, it by with Morse's cone sports association be that housing, tail spindle and the bearing of one formed, it is characterized in that being equipped with between housing and the tail spindle single-row radial ball bearing and one to bear taper roll bearing based on radial load, single-row radial ball bearing is interior, and taper roll bearing outside, the adjustment packing ring is equipped with in inner ring side at taper roll bearing, and miniature radial ball bearing is housed in the Morse's cone body.
2, live center according to claim 1 is characterized in that in the bottom of housing the dismounting nut being housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93227714 CN2153427Y (en) | 1993-03-29 | 1993-03-29 | High precision live centre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93227714 CN2153427Y (en) | 1993-03-29 | 1993-03-29 | High precision live centre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2153427Y true CN2153427Y (en) | 1994-01-19 |
Family
ID=33804923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93227714 Expired - Fee Related CN2153427Y (en) | 1993-03-29 | 1993-03-29 | High precision live centre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2153427Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102274986A (en) * | 2011-08-12 | 2011-12-14 | 成都科盛石油科技有限公司 | Revolving center used for supporting workpiece |
| CN102554286A (en) * | 2011-09-28 | 2012-07-11 | 河南活顶尖机械有限公司 | High-speed live center |
| CN103737032A (en) * | 2013-12-19 | 2014-04-23 | 中山市加贝五金模具有限公司 | Precision live center for tool machining |
-
1993
- 1993-03-29 CN CN 93227714 patent/CN2153427Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102274986A (en) * | 2011-08-12 | 2011-12-14 | 成都科盛石油科技有限公司 | Revolving center used for supporting workpiece |
| CN102554286A (en) * | 2011-09-28 | 2012-07-11 | 河南活顶尖机械有限公司 | High-speed live center |
| CN103737032A (en) * | 2013-12-19 | 2014-04-23 | 中山市加贝五金模具有限公司 | Precision live center for tool machining |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |