Patent ID: 6865789

Claim:
A tool holder for turret lathe, for attaching a complex tool having a plurality of kinds of cutting edges to a turret of said turret lathe, said tool holder comprising: a base portion formed so as to be freely attached and detached at a position for attaching a tool of said turret; a rotatable tool spindle provided at said base portion, such that said complex tool can be attached thereto and detached therefrom; an indexing means for indexably rotating said tool spindle at an indexed position corresponding to a position where each said cutting edge of said complex tool is located, provided at said tool spindle; said indexing means having a first engagement portion and a second engagement portion which are provided on said tool spindle along a longitudinal axis of said tool spindle; each of said first engagement portion and said second engagement portion having a plurality of planes which are formed at a periphery of said tool spindle so as to correspond to said indexed positions; a first actuator and a second actuator provided at said base portion so as to respectively correspond to said first engagement portion and said second engagement portion, and being free to be reciprocated and driven; said first actuator having a first driving portion for driving and rotating said tool spindle a predetermined angle with engagement with said first engagement portion, and having a clamping face for clamping said tool spindle with selective engagement with said plane comprising said first engagement portion; and said second actuator having a second driving portion for driving and rotating said tool spindle a predetermined angle with engagement with said second engagement portion.