METHOD OF CORRECTING PROCESS TOLERANCE OF GEAR GRINDER

摘要

PROBLEM TO BE SOLVED: To correct a helix angle without changing a pressure angle of a workpiece, by using a simple method without correcting a shape of a dresser.SOLUTION: A correction value of a phase between a vertical axis of a work table and a central axis of a grindstone is obtained from an error of a helix angle, and a gear shape is predicted in the case that a grindstone shape is changed according to a grindstone molding condition in which Y-direction feeding of a screw-like grindstone is corrected in accordance with the correction phase, and then an error of a pressure angle of a tooth surface in that case is estimated, and a pressure angle amount to be corrected, when a feed angle between a dresser rotational axis and a grindstone central axis is shifted before correction, is predicted in order to calculate a correction angle, and after correcting the screw-like grindstone by using a dresser in a posture that the feed angle is corrected only by the calculated correction angle, a workpiece is ground.SELECTED DRAWING: Figure 5