To provide a device reducing the necessary number of broach tools and shortening the time of arrangement to simplify it, in the case of providing a plurality of work widths for a work object.
A pair of broaches 5 are supported capable of approaching and separating on a holder 3, and energized always in an approaching direction by a spring 30, also energized in a side of the holder 3 by a spring 16. A slider 10 serving as a main unit of a position adjusting means is movably provided like interrupting between a pair of blocks 2, by driving of a hydraulic cylinder driven by receiving a signal from a control panel, when a first position of the slider 10 is moved to a second position, by its tapered angle, a space of a pair of the blocks 2 is spread, and a broach work width is changed from the first position W1 to the second position W2.
KONDO HIDENORI
TANABE SOICHI
SANYO MACHINE WORKS