Gear is an important quality indicators

Conjugate tooth profile of the slip rate is the relative sliding of two arc tooth profile and the tooth profile over the limit of the ratio of arc length. Slip ratio is larger, more serious tooth wear, friction loss also, it is an important quality gear indicator. Sliding engagement means zero rate of pure rolling between the tooth surface, it would reduce the friction between the teeth and wear. Engagement means such slip rate constant under the conditions of a pressure of the tooth profile of polycrystalline diamond , good tooth. In this paper, a rack meshing tool for the media on the plane of zero slip sliding engagement drive and wait for the theoretical derivation. The proposed: parameters via a toothed rack cutter  abrasive grinding of a sliding catch rates of tooth profile, two drawn flat rigid sliding engagement zero does not exist in the conclusions of the tooth profile, three other proposed slip rate of the presence of tooth profile vehicles range. Discussion only symmetrical tooth rack tooth profile conjugate tooth profile, because only this tooth profile greater practical significance.