ROTARY TOOL AND MANUFACTURING METHOD OF ROTARY TOOL

摘要

PROBLEM TO BE SOLVED: To provide a rotary tool capable of restraining ununiformity of abrasive grain burying quantity in an abrasive grain layer and a manufacturing method of the rotary tool. SOLUTION: A reamer 1 is furnished with a super abrasive grain layer 5 constituted as abrasive grains are fastened on a base metal 3 by brazing. A wax material non-existing part 15 dividing the super abrasive grain layer 5 is formed so as to continue in a direction orthogonal with a rotation axis A on the base metal 3. An abrasive grain attached part 17 with the abrasive grains and the wax material attached on it and the wax material non-existing part 15 to divide this abrasive grain attached part 17 are formed on the base metal 3 and the super abrasive grain layer 5 is formed by heating them in a state of arranging the rotation axis A by erecting it vertically in manufacturing this reamer 1. COPYRIGHT: (C)2008,JPO&INPIT