Synthesis of cylindrical gears with optimum rolling fatigue strength

Abstract

This paper presents a procedure for the geometric synthesis of heavy-duty, cylindrical gear drives. Particularly tooth profile forms were generated here which have almost constant contact stresses along their entire line of engagement. The synthesis is based on analysing the properties of the entire meshing zone in detail. The concept of the synthesis is developed by analysing various methods for increasing the load-carrying capacity of gear drives through optimised gear geometries, by analysing and selecting quality criteria for evaluating gears as well as examining the zone of meshing. Based on the concept of synthesis, a method of interactive synthesis is finally worked out with which especially the geometry of cylindrical gear drives can be optimised with regard to their load-carrying capacity or contact strength. The maximum or rather demanded load-carrying capacity or contact strength are used as reference parameters here.