| 摘要 |
<p>An electrolytic abrasive polishing machine for precisely polishing the inner surface of an elongated cylindrical work such as a metal pipe, comprising a holder (13) for disposing a cylindrical work (W) so that the axis of its cylindrical portion faces in the vertical direction, a rotary shaft (4) turnably supported in an outer peripheral pipe (3) so supported as to face downward in the vertical direction and capable of moving up and down, a tool electrode (5) equipped with a grinding wheel facing in a radial direction and fitted to the distal end of the rotary shaft (4) and a plastic pipe (6) wound around the periphery of the outer peripheral pipe (3) and capable of pressurizing. The inside of the plastic pipe (6) is pressurized at the time of polishing, expands in a gap between the outer peripheral pipe (3) and the inner surface of the cylindrical portion of the work (W) or between the outer peripheral pipe (3) and the inner surface of a free ring and suppresses the deflection of the outer peripheral pipe (3) and the deflection of the tool electrode (5) inside the cylindrical portion that would be caused by the high speed revolutions of the rotary shaft (4) and the tool electrode (5).</p> |
