Graphic Analysis of Hobbing in Unfinished Space

Abstract

A new graphic method is proposed, in which the hobbing state in the unfinished tooth space can be easily illustrated through simple calculations and with only one tooth profile template. This method is useful not only in the estimation of the cutting thickness, length and zone in various hobbings but also in the forecast of the chip flowing on the rake face. The tooth wear can be also related analytically with the cutting amount and the chip flowing. Additionally, several tooth profiles developed for the anti-wear purpose are discussed.