Electric chuck for machine tool and method of opening or closing gripping pawl of same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 31, 2000
Grant Date -
N/A
app pub date -
Oct 20, 1998
filing date -
Feb 21, 1997
priority date (Note) -
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Abstract
The present invention relates to an electrically driven chuck for holding a chuck of a machine tool, wherein an electrically driven chuck which has no need of any driving means to be exclusively used for a holding chuck, very simplified, and freely adjustable. Chuck fixing means 40 is locking means for locking a chuck body on a headstock 1. Position-deciding pin driving means 42 includes position-deciding part 43 which has piston 44. The insertion of position-deciding part 43 is inserted into position-deciding hole 41 when pressured air is supplied within cylinder 46. When built-in motor 4 is rotatively driven, both main spindle 2 and scroll 17 are rotatively driven, and jaws 30 move to hold or un-hold a work in the radial direction.
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