Synthesis of Five-bar Motion Generation with Gear Train Fabrication Tolerances

Geared Five-bar motion generation is used to synthesize a mechanism which passes through or approximate prescribed rigid-body positions. This work will discuss the motion generation of geared five-bar mechanism with position tolerance variations due to gear fabrication. The tolerance variations study will be based on the standards of American Gear Manufacturing Association (AGMA) and American National Standard Institute (ANSI). The new design constraint introduced in this paper will consider the gear train tolerances and incorporate it into the displacement position matrix of coupler points described in the conventional planar fivebar motion generation models developed by [1] and [2]. The synthesized planar geared five-bar mechanism will produce tolerance limits for moving pivots and link length from which any mechanism can be synthesized to satisfy the prescribed coupler points with their prescribed tolerances. The included example demonstrates the synthesis of a geared five-bar mechanism with gear train tolerances. 1