| 摘要 |
PURPOSE:To improve a working accuracy as well as a surface roughness by a method wherein a work is applied with rotation, in the surface grinder grinding the upper surface of the work chucked to the upper surface of a rotary table with a vertical shaft grinding stone. CONSTITUTION:The big table 4, supported to a base 8 by a bearing, is driven to rotate by a motor 13 through a reduction gear 12 and a belt 11. A plurality of small tables 5 are supported by the bearings on the circumference of the big talbe 4 and are driven to rotate by the motor 15 through another reduction gear 16, belt 17, gears 19, 20 and another belts 22. The works are attached to the upper surfaces of the small tables 5 through chucks 14 and the upper surface thereof are ground by the grinding stones arranged on the vertical shafts while being rotated and revolved. |
