Spherical mirror surface processing method and device

摘要

The device of this invention is made up by: a stage having an upper surface for which a section taken at a right angle to the longitudinal direction describes a concave arc; abrasive tape arranged on the stage at a right angle to the longitudinal direction; a mechanism for driving the abrasive tape; a mechanism that applies pressure and places the end face of the workpiece in contact with the abrasive tape such that the center of the radius of curvature of the section of the stage coincides with the center of rotation of a rod-like workpiece; a mechanism for giving the workpiece a reciprocating movement over the surface depression in the longitudinal direction of the stage while rotating the workpiece; arid a water-holding material that contains a grinding fluid that produces a thin and uniform film of grinding fluid on the surface of the abrasive tape.