Turning – Process of turning
Patent
1987-02-27
1989-01-31
Schmidt, Frederick R.
Turning
Process of turning
82 9, 82 20, 82 32, 82 702, 82 74, B23B 518
Patent
active
048007897
ABSTRACT:
A machining apparatus for circumferentially machining a stationary shaft-like work-piece. An inwardly moving tool slide rest is mounted on a main spindle driving gear which is driven by a common gear. A feed gear is concentrically mounted with the main spindle driving gear and is also driven by the common gear but has a differing number of teeth from the main spindle driving gear. A cam surface in the feed gear interacts with a cam follower in the main spindle driving gear so that the relative rotation of the feed gear and the main spindle driving gear radially moves the cam follower, which radially drives the tool slide rest. The end of a machining cycle can be detected by a switch linked to the motion of the tool slide rest. Overload in the cutting can be detected by driving the main spindle driving gear and the feed gear with two gears, one of which can slip. Slippage indicates overload. If two such machining units are used, it is preferable that two pairs of guide surface be provided on the bed with adjacent ones of the machining units and the tail stocks holding the work-piece being mounted on different ones of the guide surfaces.
REFERENCES:
patent: 53058 (1866-03-01), Thomas
patent: 2148293 (1937-05-01), Groene
patent: 3848489 (1974-11-01), Santana
patent: 4090422 (1978-05-01), Berbalk
patent: 4384333 (1983-05-01), Maecher
Nigata Engineering Co., Ltd.
Schmidt Frederick R.
Shideler Blynn
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