| 摘要 |
There is disclosed a tool changer apparatus for rapid changing of a tool holder in a mill incorporating a draw bar having a gripper mounted on one end thereof for gripping a holding flange formed in a tool holder so retraction of such draw bar will close the collet on such flange to draw a centering taper formed in such tool holder into mating relationship with a complementary taper formed on one end of the mill spindle to center such holder. Incorporated on the opposite end of such draw bar is a tightener incorporating toggle links for holding the draw bar in its retracted position and operative upon retraction of the mill quill to release such toggle link to thereby extend such draw bar and release the tool holder from such gripper. Such first tool holder may then be removed and replaced with a second tool holder and upon extension of the quill, the toggle links will be closed to retract the draw bar and tighten the gripper about the holding flange of the second tool holder and center such second tool holder in the complementary taper of the quill. |
