Patent ID: 8020464
Filing Date: 2011-09-20
Classification: B23F,F16H,Y10T

Abstract:
1. A gear pair for power transmission comprising: a pair of engaged driving and driven gears, profiles of the driving and driven gears being divided into upper and lower profiles relative to respective reference points, the reference point of the driven gear being located adjacent a middle point of an effective working depth of the gear pair, the reference point of the driving gear and the reference point of the driven gear being a pair of conjugate points, lower profiles of both the driving and driven gears are composed of smooth convex analytic curves, the upper profiles of both the driving and driven gears are composed of conjugate curves defined by a series of points obtained from an engagement equation based on kinematical regularity, the instantaneous gear ratio ω 2 of the gear pair is expressed as: where ε represents angular acceleration of the driven gear relative to the driving gear, φ