| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a router machining device which does not produce burrs even when the edge part of a printed wiring board where a positioning recessed hole is formed is ground. <P>SOLUTION: When the printed wiring board PB is ground, a router bit 110 for grinding the edge part MP thereof on the right side of the positioning recessed hole UO is moved to the right side and rotated in such a direction that the outer surface thereof displaces to the right side, and a router bit 110 for grinding the edge part MP thereof on the left side of the positioning recessed hole UO is moved to the left side and rotated in such a direction that the outer surface thereof displaces to the left side. Since the edge parts MP on the right and left sides of the positioning recessed hole UO are ground in the direction in which the positioning hole UO is enlarged, burrs projecting from the edge parts MP toward the positioning recessed hole UO are not produced. <P>COPYRIGHT: (C)2012,JPO&INPIT |
