HOLESAW, AND METHOD FOR BENDING SET IN HOLESAW

摘要

PROBLEM TO BE SOLVED: To improve cutting property by preventing fracture of a tooth tip of a blade tip of a holesaw. SOLUTION: This holesaw 1 comprises: a cylindrical blade 7 having a cylindrical shell part 33 having a blade tip 5 comprising a plurality of tool tips 29 at a tip; a holesaw mounting part for mounting a rear end side of the cylindrical blade 7; and a shank part integrally provided to the holesaw mounting part. One or more protrusions 27 lower than the tooth tips 29 are also provided between the tooth tip 29 and the tooth tip 29 for restraining a cutting volume. COPYRIGHT: (C)2008,JPO&INPIT