| 摘要 |
PROBLEM TO BE SOLVED: To increase grinding efficiency and reduce manufacturing costs with a simple screw grinding operation. SOLUTION: At least one of base end flank faces and tip end flank faces of a plurality of complete threads 56 and continuous biting threads 60 is continuously ground across an entire axial direction of a screw part 10b by relative feeding a grinding wheel 26 to the screw part 10b in an axial direction using a first feed lead L1 relative to the complete threads 56, and a second feed lead L2 or a third feed lead L3 relative to the different biting threads 60. Therefore, at least one of both sides of the flank faces of the complete threads 56 and the biting threads 60 is ground at once, so as to simplify a screw grinding operation, heighten grinding efficiency, and reduce manufacturing costs. COPYRIGHT: (C)2008,JPO&INPIT |
