During meshing, without any change in the sign of the slip rate, increasing the tooth original width, further, pitch En-gai involute tooth profile within the gear pair to reduce the relative curvature of the tooth in meshing point

摘要

PROBLEM TO BE SOLVED: To provide a tooth profile characterized in that (1) the positive/negative of sliding rates is not varied from the start of engagement to end thereof and (2) the tooth profile has large dedendum width of a pinion and further a small relative curvature of the tooth profile at an engaging point as compared with an internal gear pair in the conventional involute of the same module and the number of teeth concerning an involute internal gear pair.;SOLUTION: A gear composing the internal gear pair employs as a tooth profile a part of a reference circle of a low pressure angle involute curve as asymptotic as possible to an involute curve drawn on the reference circle by points on straight lines rolling on the circumference of respective reference circles.;COPYRIGHT: (C)2012,JPO&INPIT