Guiding and feeding device for a work bar in a lathe
US4672869A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1986 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Jan 2, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/1266
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hollow spindle (10) comprises a collet (20) at one end and behind the same and spaced from each other two guide sleeves (50,52) for the work bar (W). The rear guide sleeve (52) being the most remote from the collet (20) is axially displaceable in a direction toward the collet (20) against the resistance of a spring (58) and has an abutment face (82) remote from the collet (20) for a stock feeder (70). Upon advanced use of the work bar (W) the stock feeder (70) hits the abutment face (82) of the rear guide sleeve (52), pushing the same forwardly as the work bar (W) continues to be used up and advanced. By virtue of this arrangement the work bar (W) is guided in vibrationless manner and also the stock feeder (70) is kept largely without vibrating by its abutment against the rear guide sleeve (52).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.