MAPS REPRESENTING EXISTENCE REGIONS OF CONJUGATE PINIONS FOR CUTTER GEOMETRY DESIGN IN INTERNAL GEAR SKIVING

抄録

Gear skiving is a very old technique for cutting internal gears, and its high productivity causes many attentions to focus again on itself. However, for gear skiving processes, tool designers are required to have knowledges about mesh geometry of internal gear pairs with shaft angle. Then, the conjugate pinion exist only in the limited regions along the facewidth because of undercut, pointed tooth, and lack of tooth space. The limited regions would depend on parameters; e.g., a gear ratio, a shaft angle, and a helix angle. Knowing the regions, tool designers could make use of the information to decide starting points for examining cutter geometry. The present paper describes maps representing such existence regions of a conjugate pinion. The maps generally show horseshoe shapes on the pinion axis vs center distance diagrams. The maps could be useful for skiving cutter design.