A device for converting two types of spindle tapered bores of a
machine tool, as a milling head, is arranged in the head part of the
machine tool with a spindle tapered bore in the type of ISO60 and is further embedded with a guidance key of the primary spindle tapered bore. The device for converting two types of spindle tapered bores of a
machine tool is characterized by a broach mechanism of an ISO50 tapered bore: a tapered
handle is combined with an upper tapered
handle up and down to form a
conical shell; a pop-
rivet is arranged on the dome of the first large outer
diameter of a claw spindle which is arranged around the circle, the small inner
diameter of a slide sleeve is arranged outside the small outer
diameter of the pop-
rivet, the small inner diameter at the upper section of a claw is blocked at the dome of the second large outer diameter of the claw spindle, a spring is arranged in an arc groove located on the outer wall of the claw, and a spring set is arranged along the outer edge and the lower part of the slide sleeve; a slide rod and a hook are arranged on the later side of the large-diameter platform of the tapered
handle, and an elastically cylindrical pin is arranged inside a key which is combined with the transmission key of the spindle; the pop-
rivet of an ISO50 cutter is clamped inside the tapered handle by the claw spindle to form a pop-rivet claw. The device enables one
machine tool to use two types of cutters, realizes automatic dismounting and clamping and automatic cutter switching, and has an inner-cooling interface, high
automation and high efficiency, thereby reducing the cost and better meeting the requirement of customers.