| 摘要 |
<p>A tool rest enables installing a tool holder onto a turret quickly, easily, and with good precision, and precisely positions the tool holder to the turret, and is composed of tool-retaining tool holders, and a rotatably supported, polygonal columnar turret (30) onto the peripheral surface of which a plurality of tool holders detachably/reattachably mounted. A first key (32), second key (33), and third key (34) having parallel side engagement surfaces (32a), (33a), (34a) are formed protruding from the tool holder mounting surfaces (30a) on the outside of the turret 30. The engagement surfaces (32a), (34a) of the first key (32) and third key (34) are parallel to each other, and the engagement surfaces (33a) of the second key (33) are perpendicular to the engagement surfaces (32a) of the first key (32). Key slots in which the keys (32), (33), (34) are inserted and which engage the engagement surfaces (32a), (33a), (34a) of the keys are formed in the turret mounting surface of the tool holder.</p> |
