Computational Optimization of the Basic Data and Tooth Form Parameters Based on the Contact Strength for Hypoid Gear

Abstract

This study provided a design method to determine the basic data and tooth form parameters that includes geometric design, cutter head parameters and additional data of hypoid gear pair. The theoretical calculated model of contact stress for hypoid gear was established by pitch cone and surface durability method. The geometric parameters of hypoid gear and equivalently virtual cylindrical gears parameters were derived. A novel optimization method to prioritizes the cutter head mean radius then optimizes other design variables was proposed. An example shows that the impacts of other parameters were obvious on contact stress except to the number of blade groups, mean dedendum coefficient and tooth thickness factor. In addition, the contact stress reduced by 12.95% and the transmission efficiency only decreased by 0.47% after using optimization method.