Machine tool

Details Machine tool Machine tool

1994-03-14

1996-12-17

Rose, Robert A.

Abrading

Precision device or process - or with condition responsive...

Computer controlled

451 9, 451 58, B24B 4900

Patent

active

055847447

ABSTRACT:
A machine tool is equipped with a feed screw unit for relatively moving a tool and a work to be worked and a contact detection means for detecting contact between the tool and the work, which is provided for a feed screw unit. With the feed screw unit is engaged a nut member and the nut member is provided with a minutely expandable member capable of being minutely or finely expanded or contracted in an axial direction of the nut member. The minutely expandable member is provided with a minutely expandable means, and the contact detection means is provided for the minutely expandable member. The contact detection means and the minutely expandable means are disposed in parallel or in series, or in combination, to each other with respect to an axial direction of a feed shaft.

REFERENCES:
patent: 3085371 (1963-04-01), Lessman
patent: 4662122 (1987-05-01), Ohmura et al.

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