| 摘要 |
PROBLEM TO BE SOLVED: To provide a machine reamer, making material to be cut hardly deposited on the blade part even if the cutting speed is increased, attaining high machining efficiency, hardy causing wear of the knife edge even in the case of heavy cutting, and having excellent durability to achieve a long life. SOLUTION: A plurality of elongated blade parts 5A to 5F are projected on the outer peripheral part of a reamer head body 11, and the plurality of blade parts 5A to 5F formed of materials different in quality are mixed. COPYRIGHT: (C)2007,JPO&INPIT |
