Parameter Modeling And Finite Element Analysis For Final Drive Spiral Bevel Gear

The spiral angle are equal and direction are opposite between the large and the small gear, the spiral bevel gear have lower noise and liberation than other gear, and the important is that number of the small gear can reduce comparatively, so we can get larger transmission ratio and compact space, the spiral bevel are popular in automobile industry. But the traditional designing mean of spiral bevel gear is complex and inefficient, it will take large of time to design a group of spiral bevel gear, meanwhile we need to correct and calculate again and again.In this paper, according to disadvantage of the above-mentioned designing and analyzing, research how to complete parameter model designing of spiral bevel gear accurately in short time on the base of modern method on the base of UG Second Development Language, and establish the final drive spiral bevel gear parameter model. Then with the date interface of ANSYS this software, import the CAD spiral bevel gear parameter model into the ANSYS, and emphasis on the analyzing the impact to accurate and time of accounting which cause by the selecting of cell types and the meshing style, then complete finite element analyzing model reasonably, afterward, complete the analyzing of the spiral bevel gear's contact stress and bend stress when the spiral bevel gears gear. This analyzing include two aspect of rotate speed situation: the lower rotate speed and the normal rotate speed, then we can obtain the variety rule of contact stress, contact station and bend stress in the wake of progress of the spiral bevel gears gear. In addition, analyze the modal performance of the spiral bevel gear, obtain the strain diagram and modal parameters. At last the author gives some pieces of advice to go on working on this object.