Finite Element Analysis. Cone Worm Drive Meshing Surface Modeling And Contact

Spiroid gear drive has many advantages such as high ratio,many teeth in simultaneous contact, load capacity, high efficiency and so on. Researches on spiroid gear drive are performed in many countries and spiroid gear drive was applied in the aircraft in American. In this paper,we study on the mesh anlysis and solid model of spiroid gear drive. Based on the theories of gear meshing,mathematical model of spirod gear drive is established by kinematics method. We plot the tooth profile of Archimede and Klingelnberg type spriroid worm in Matlab sofware.Equations of spiroid wheel gear are generated as the envelope to the family of hob surface and equation of avoidance of undercutting are deduced. The way to creat solid model of spiroid gear drive is discussed.The reference geometrical model is generated by simulating the hobbing process respectively in CATIA and AutoCAD. The points on the tooth surfaces are obtained. Then by fitting the numerical tooth surfaces, the accurate gear model is obtained.Then we design a spiroid gear drive reducer and establish virtual of reduer,realize virtual assembly and complete the work of kinematics smulation. The conclusions which have been obtained during simulation analysis could deepen the validity of the solid model and the structure of spiroid gear drive reducer. The tooth contact analysis via Finite Element Method was done in Abaqus. By defining the same load in different locations, the dates in the result confirm that the spiroid gear drive has high contact tatio and high capacity. At last, we introduce a new way to manufacture the spiroid gear drive with the head cutter briefly.This paper is valuable in future design of spiroid gear drive.