MANUFACTURE OF REFLECTING PLATE AND ITS DEVICE AND REFLECTING PLATE MANUFACTURING DIE

摘要

PROBLEM TO BE SOLVED: To stably manufacture the reflecting plate whose inner surface is an excellent mirror finished surface by coating a specified average thickness of a working liquid on the whole surface of the zone coming into contact with the part being a mirror finished surface in the inner surface of the reflecting plate of the surface of a die and spinning while rotating the material to be worked together with the die. SOLUTION: In order to make the inner surface of the reflecting plate the excellent mirror finished surface, the surface roughness of the zone coming into contact with the part is necessitated to finish to be at least <=0.4μm. A wiping tool 11 is connected to a coating tool 10 with a connecting rod 12 so as to be driven with the coating tool 10. The connecting rod 12 is fixed to an arm, and the arm is copied from the die 1 with a required driving mechanism. The working liquid film 3a is formed on the surface of the die after the coating tool 10 copies, however most of the film thickness is generally specified to be >=0.6μm in average thickness. The working liquid film 3 of >= the same extent as the surface roughness of the die to <=0.6μm in average thickness is successively formed on the surface of the die after the wiping tool 11 copies.