| 摘要 |
PROBLEM TO BE SOLVED: To produce a large quantity of balls which are hardly flawed or damaged and of a high sphericity. SOLUTION: With an upper polishing plate 11 rotated while maintaining it horizontally at a prescribed height, and with workpieces 15 placed in a circular V-groove provided on the upper face of a lower polishing plate 13, air pressure is introduced from a compressor 38 into a cylinder 33 so that a piston 34 is raised, pushing the lower polishing plate 13 toward the upper polishing plate 11, and this pressing force is set and retained by a controller 42. Vibration and shocks in the vertical direction are absorbed by a buffer tank 37. |
