| 摘要 |
A machine tool includes a tool spindle head for supporting a first side of a hob via an arbor, a turret, and a tool supporting unit including a movable section and a fixed section. The fixed section is fixedly mounted to the turret and slidably supporting the movable section. The movable section includes a support member for rotatably supporting a second side of the hob. The movable section further includes a first holding member holding the support member rotatably, second holding members holding the first holding member rotatably about an axis which extends perpendicularly to the rotation axis of the support member, and a slide member provided along the second holding members and fitted to a slide guide formed at the fixed section. When the tool supporting unit is positioned at a predetermined tool holding position, the movable section is capable of advancing and retreating in the Y-axis direction.
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