TRUING METHOD IN CENTERLESS GRINDING MACHINE FOR BAR-LIKE WORKPIECE, AND CENTERLESS GRINDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a truing technology improving surface roughness of a machined surface of a workpiece to grind even a workpiece with an extremely small diameter and obtaining high production efficiency, in centerless grinding for grinding a bar-like workpiece into stepped shape. SOLUTION: A centerless grinding machine performs centerless grinding of a tip shaft part Wb of the bar-like workpiece W into stepped shape by a conductive grinding wheel 1 with a profile corresponding to the final shape of the tip shaft part Wb of the bar-like workpiece W. After carrying out electric discharge truing of a grinding wheel surface 10 of the grinding wheel 1, a part for grinding the tip shaft part Wb of the workpiece W in the grinding wheel surface 10 is subjected to mechanical truing using a truing tool with a shaft similar to workpiece shape and having a cylindrical truing surface 31a. COPYRIGHT: (C)2005,JPO&NCIPI