Machine tool

Details Machine tool Machine tool

1995-04-21

1997-09-02

Howell, Daniel W.

Tool changing

With control means energized in response to activator...

Responsive to tool

483 34, 408239R, B23Q 3157

Patent

active

056625677

ABSTRACT:
A machine tool comprises a headstock (12) having a rotatable spindle (16) and having motor means for rotatably driving said spindle (16). At least one gripper (26) is provided for gripping a tool holder (18) and for transferring same from a first, uncoupled position outside said spindle (16) into a second, ready-to-couple position within said spindle (16). Coupling means (35) are provided at said headstock (12) for coupling said tool holder (18) in said second, ready-to-couple position with said spindle (16) such that said tool holder (18) assumes one of at least two coupled conditions, whereby in such coupled condition said tool holder (18) is locked on said spindle (16) for rotation therewith. Said at least two coupled conditions differ from one another with respect to a relative angular alignment between said tool holder (18) and said spindle (16). Control means are provided for controlling said motor means and having sensor means (48) for detecting said tool holder (18) to be in one of said coupled conditions and for differentiating between said at least two coupled conditions.

REFERENCES:
patent: 3851562 (1974-12-01), Tomita et al.
patent: 3953039 (1976-04-01), Hauge et al.
patent: 4406721 (1983-09-01), Tomita et al.
patent: 5263918 (1993-11-01), Ruetschle et al.

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