PERFORATOR FOR RECOVERING THE CUT PIECE AND CUTTING CHIPS

摘要

A perforator for recovering cut pieces and cut chips can effectively recover cut chips and cut pieces of a water supply pipe that has been cut by bits of a center drill and a cutter part by using a supporting plate on which a plurality of magnets and a magnet plate are installed. A perforator for recovering cut pieces and cut chips comprises: a plurality of supporting bars(21) installed in an inner space of a cylindrical cutter part having an inverse U-shaped cross-sectional shape; a disc-shaped supporting plate(20) in which the supporting bars are installed in a state that coil springs(22) are inserted onto the supporting bars; a plurality of magnet parts(23) installed on outer peripheries of the supporting plate at positions corresponding to those of bits(1) of the cutter part; and rectangular groove portions which is formed in a bottom side of the supporting plate, and in which the magnet plates are installed. The rectangular groove portions are formed in one side centering around an arbitrary central line of the supporting plate.