METHOD FOR MACHINING TOOTH SURFACE OF SPIRAL BEVEL GEAR

摘要

PROBLEM TO BE SOLVED: To provide a method for machining a tooth surface of a spiral bevel gear, easily correcting a tooth trace by only controlling a rotation center position of a cutter, without requiring an expensive device or an advanced technique.;SOLUTION: The method includes steps of: installing a gear 4 to be cut so that a center axis thereof passes an origin of coordinates, and that a tooth bottom conical surface is parallel to an X-Y plane; moving the cutter 1 in a Z-axis direction while rotating it, and moving a rotation center axis of a cutting edge 3 along an arc having the origin of coordinates as the center; correcting a trajectory of the rotation center axis of the cutting edge 3 so that the trajectory passes a large diameter-side correction position and a small diameter-side correction position which have been shifted in the X- and Y-axis directions by a large diameter-side correction value and a small diameter-side correction value converted based on correction target values at ends of large- and small-diameter sides of the tooth surface and a correction start position of the tooth surface, from a reference trajectory passing a large diameter-side reference position and a small diameter-side reference position; thereby forming areas which causes no tooth contact under no load at both ends of the tooth trace.;COPYRIGHT: (C)2012,JPO&INPIT