| 摘要 |
PROBLEM TO BE SOLVED: To grind a small-diameter and -curvature lens metal mold accurately that can not be ground before. SOLUTION: A rotary axis 1 for a spindle of a machine is provided, a Z-axis table 2 of the machine is provided parallel to the rotary axis 1 of the machine spindle, and an X-axis table 3 of the machine is provided perpendicular to the rotary axis 1 on the Z-axis table 2 of the machine. A grinding wheel spindle holder 4 is provided perpendicularly on the X-axis table 3 and a grinding wheel spindle 6 is fixed at an arbitrary angle 5 on the spindle holder 4 that is adjustable by a vertical travel mechanism 7. An electrodeposited grinding wheel 8 is fixed on the spindle holder 6. The grinding wheel 8 is moved relative to a workpiece by the same NC machining program as for the grinding wheel rotary axis that crosses perpendicularly.
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