Simulation And Test On Contact Performance Of Double-circular-arc Spiral Bevel Gears

Double-circular-arc spiral bevel gears have been proved to have higher carrying capacity and longer working life comparing with common spiral bevel gears because they are convex-concave meshing both along tooth length and height. Complex geometrical construction and lack of study in depth of double-circular-arc spiral bevel gears, however, has been restricting their application. Simulation and analysis of the gears meshing is an effective solution to study the transmission performance. This paper introduces the simulative machining of double-circular-arc spiral bevel gears, and the formation of the 3-D models. Finite element analysis method has been applied to study the gear contact performance, which can be beneficial to the later corresponding research.The main content of this paper includes:1) Summarizing the current research situation on double-circular-arc spiral bevel gears, illustrating the selection principle of tooth profile and its parameters, analyzing the priciples of conjugate tooth faces formation and meshing and deducting the tooth face equation;2)Simulatively machining a pair of double-circular-arc spiral bevel gears based on Pro/E, obtaining the 3-D model with higher accuracy and providing reference for further study on contacting strength analysis and dynamic performance simulation;3) Manually establishing the finite element model in ANSYS, three pairs of meshing teeth with grid of eight-node hexahedron unites;4) Analyzing the static contact strength, obtaining the stess variation rules, verifying the correctness of models;5) Discussing the solution of finite element dynamic problems, carrying on the tooth contact test and analysis, studying the influence of installation errors on dynamic performance variation;This paper provides reference for later research and application of double-circular-arc spiral bevel gears.