| 摘要 |
PROBLEM TO BE SOLVED: To provide a blade of a boring tool preventing separation of a boring blade and timing belt even in use when boring a noncircular through-hole. SOLUTION: The boring blade has: a blade body formed in an endless belt shape; and the timing belt formed in the endless belt shape of meshing with a rotary mechanism, and is characterized in that the blade body has a plurality of blade bodies formed on one end side of the blade body and a plurality of connecting parts arranged at an interval in its peripheral direction on the other end side of the blade body to be connected to the timing belt and formed by projecting toward the timing belt from the other end, and the timing belt has a plurality of insertion parts for inserting the connecting parts, and the blade body and the timing belt are connected by inserting the connecting parts into the insertion parts. COPYRIGHT: (C)2011,JPO&INPIT
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