| 摘要 |
PURPOSE:To raise an operating efficiency by beveling each angle part of a straight strip having a rectangular cross section by a rotating grinding body having a concave part with a prescribed curvature on its periphery. CONSTITUTION:A concave part 3 of a rotating grinding body 2 forming the concave part 3 having a prescribed curvature at each corner part of a straight strip 1 such as a straight insulation wire having a rectangular cross section is arranged at 45 deg. angle to the each corner part. The corner part is beveled into a prescribed shape accompanying the running of said straight strip 1. |
