Turret tool post for machine tool and apparatus for controlling indexing of the same
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United States of America Patent
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-
Jun 23, 1992
Grant Date -
N/A
app pub date -
Jun 28, 1991
filing date -
Feb 1, 1988
priority date (Note) -
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status (Latency Note)
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Abstract
A turret tool post for a machine tool has a turret having a plurality of turret faces each equipped with a tool for machining, a turret shaft for rotating the turret, a cam follower provided on the turret shaft, a cam having a cam surface engaged with the cam follower to cause the cam follower to rotate, and an indexing motor for driving the cam to index the turret faces. A straight raceway portion is formed on the cam surface of the cam so that the cam follower is not driven to rotate through a predetermined angle. Also disclosed is an apparatus for controlling indexing of the turret tool post which has a turret controller for controlling the rotation of the indexing motor. The speed of the indexing motor is controlled in accordance with whether a door attached to a cover covering the turret and other elements is open or closed.
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