Machine tool with a turret head for tool spindles

A machine tool having a frame, a turret head rotatably mounted upon the frame, a plurality of tool spindles rotatably supported within the turret head, index means for indexing the turret head to selectively position the tool spindles to an operative position, first coupling means provided upon each of the tool spindles, second coupling means slidably and rotatably provided upon the frame for rotating any one of the tool spindles positioned at the operative position when engaged with the first coupling means of the said any one of the tool spindles, and orienting means for positioning the second coupling means to a predetermined angular position, the improvement comprising:

• first engaging means provided upon at least a particular one of the tool spindles,
• second engaging means slidably mounted within the turret head and engageable with the first engaging means when the said one of the tool spindles is positioned to the predetermined angular position for maintaining the same thereat,
• means for moving the second engaging means into engagement with the first engaging means,
• release means operably disposed within the frame for moving the second engaging means out of engagement with the first engaging means against the last mentioned means when brought into abutting engagement with the second engaging means,
• a lever member operably supported and connected with the second coupling means and the release means for simultaneously moving the second coupling means and the release means respectively into engagement with the first coupling means and the second engaging means, and
• an actuator connected with the lever member for operating the same.