| 摘要 |
An automatic tool changer in a machine tool for automatically changing a tool. The machine tool includes a main frame, a main spindle head movably provided to the main frame, a main spindle rotatably disposed in the main spindle head, the main spindle head being movable in an axial direction of the main spindle, and a tool magazine provided with a rotatable magazine base for holding a plurality of tool holders and for rotationally indexing one of the tool holders, whereby the one of rotationally indexed tool holder is changed by a tool holder provided at the main spindle. The automatic tool changer comprises; a plurality of tool holder gripping means radially arranged on and pivotably supported to the magazine base, the tool magazine being secured to a stationary portion of the main frame, and means for pivotting one of the tool holder gripping means rotationally indexed independent of remaining tool holder gripping means. The pivotting means moves the one of tool holder gripping means toward and away from the main spindle, and the pivotting means moves the one of tool holder gripping means away from the main spindle when the main spindle head is moved for machining to a workpiece. |
