PRECISION MACHINING OF GEAR SURFACE OF GEAR-LIKE WORKPIECE BY TOOL WITH INTERNAL TOOTH, FINISHING WORK OF SAID TOOL AND FINISHING WHEEL SUITABLE FOR SAID FINISHING WORK

摘要

PURPOSE: To conduct satisfactory precision machining to an externally toothed workpiece even by a tool which is not externally but internally toothed. CONSTITUTION: In this method, a flank of a gear-shaped workpiece W is precision-machined by an internally toothed tool T. A rotation axial line CT of the tool T and a rotation axial line CW of the workpiece are crossed with each other, the tool T is engaged with the workpiece W to be rotated, and the tool T is moved relatively to the workpiece W in directions of three coordinates axial lines perpendicular to each other. In moving the tool T relatively to the workpiece W, relative rotation motion about a rotation axial line perpendicular to the rotation axial lines CT, CW of both which are crossed with each other is simultaneously made in addition, thereby a crossing angle is changed.