| 摘要 |
PURPOSE:To efficiently shape the both edge surfaces by allowing a rod member supported onto a receiving plate to pass through the arrangement of a polish grindstone and an adjusting grindstone so that a prescribed interval sxists on the inlet side of a worked article and a gap does not exist on the outlet side at the other edge. CONSTITUTION:The screws 1a having the sectional form necessary for shaping and cutting the edge surface of an aimed small and short worked article are formed at the pitch nearly equal to the length of the small and short worked article. On the surface of a grindstone 1. An adjusting grindstone 2 and the polishing grindstone 1 are arranged oppositely so that a desired interval G is kept between the top edge of the screw 1a and the surface of the grindstone 2 on the inlet side and to be close to be nearly attached on the outlet side. When a rod member 8 is fed from the inlet side, a shallow groove 81 is formed by the screw 1a, and the groove 81 is made deep futher, and finally cut, and a worked article W having the desired shape at the both edges can be obtained. Therefore, the working and cutting for a needle roller having the both edge surfaces in a specific form can be carried out efficiently.
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