| 摘要 |
PURPOSE:To increase grinding efficiency while increasing time to the following dressing and increase machining efficiency as a whole by installing a large- diameter rigid grinding wheel having a high grinding property on a wheel spindle stock. CONSTITUTION:A large-diameter rigid grinding wheel 13 having a high grinding property is installed on the spindle 9 of a wheel stock 8, on which an automatic balancing wheel 13 is provided to maintain the optimum balancing condition of the grinding wheel 13 during grinding and to keep a high machining accuracy. Further, by integrally assembling the servo-motor 15 of a wheel stock feeding device and its phase rotation angle detecting board 27 on a ball screw 16 which gives cutting and a linear feed of reciprocating movement, etc. to the wheel stock 8, a command pulse can be faithfully followed while admitting no error when detecting its phase angle, obtaining a highly accurate feedback. Thereby, a good following property of the wheel stock 8 can be obtained while obtaining high rigidity and accuracy to finish an accurate profile of a grinding cam W.
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