Identification and Modification of Closed Defect of the Location Function for N-Lobed Noncircular Gears

摘要

A general formulation of the identification and modification method of closed defect for the location function of N-lobed noncircular gears (N-LNGs) is proposed. The method is forced to satisfy closed condition of the location function by introducing two modification parameters: proportional parameter and controllable parameter. Controllable parameter can be improved based on the minimization of the maximum modification error. In particular, in order to modified the closed defect without the introduction of new design defect: pitch curves interference defect, controllable modification parameter is further verified and improved by the relationship of curvature radius between internal gear pitch curve and external gear pitch curve for N-lobed internal meshing noncircular gears. This identification and modification method is implemented in several numerical examples, and simulation results demonstrate that the closed defect of the location function for N-LNGs can be effectively identified and modified.