NC TRIAXIAL CENTRIPETAL GRINDING POLISHING DEVICE AND GRINDING POLISHING METHOD OF GLASS LENS USING NC TRIAXIAL GRINDING POLISHING DEVICE

摘要

PROBLEM TO BE SOLVED: To cope with a lens having a different radius of curvature by arranging a control mechanism for controlling an X axis driving mechanism, a Z axis driving mechanism and a θ axis driving mechanism so that an intersection of the Y axis and the Z axis is always positioned on the same circular arc with the rotary center as the center.;SOLUTION: An X axis driving mechanism 20, a Z axis driving mechanism 30 and a θ axis driving mechanism 40 are controlled by a control mechanism so that an intersection of both the rotational axis Y of a grinding polishing cutter and the rotational axis Z of a work moves on the same circular arc with the rotary center 41 as the center. Thus, when controlling positions of the work and the grinding polishing cutter, grinding polishing work of a spherical surface can be performed by the same NC triaxial grinding polishing device regardeless of a radius of curvature of the spherical surface of the work. Since abrasion cannot be avoided in the grinding polishing cutter, even if abrasion of the grinding polishing cutter makes progress, the X axis driving mechanism 20 and the Z axis driving mechanism 30 are desirably driven so that the rotary center is always positioned on the spherical surface of the work.;COPYRIGHT: (C)2000,JPO