| 摘要 |
PROBLEM TO BE SOLVED: To provide a turning method for a forming tool capable of efficiently advancing the work without breaking the shape of a truer itself. SOLUTION: The turning method for the forming tool for correcting a working surface 3a of a forming tool 3 to work a lens 1 to a desired shape to the shape to meet the desired shape of the lens 1 by a truer 12 comprises a process to turn the forming tool 3, a process in which an abutting surface 12a abutted to the working surface 3a of the forming tool 3 abuts the truer 12 of glass on the forming tool 3, a process to feed a working solution 14 containing free abrasive grains between the working surface 3a of the forming tool 3 and the abutting surface 12a of the truer 12, and a process to oscillate the forming tool 3 or the truer 12 with the center of curvature of the truer 12 as the center of oscillation. |
