INVOLUTE TOOTH PROFILE INTERNAL GEAR PAIR OUT OF PITCH CIRCLE MAKING LARGE DEDENDUM WIDTH AND SMALL RELATIVE CURVATURE OF TOOTH PROFILE AT ENGAGING POINT WITHOUT VARYING POSITIVE/NEGATIVE OF SLIDING RATE DURING ENGAGEMENT

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