The Method of Accurate Variable Curvature Crowning of Involute Straight Bevel Gear

Abstract:

Involute straight bevel gear pair often appears the phenomenons of meshing interference, impact and "end contact" in the course of meshing. Usually, symmetrical crowning is adopted to improve above phenomenons, however, due to the influence of complicated tooth loads and other complicated factors, the symmetrical crowned gear may not reach a good modification effect. In this paper, we adopt target variable curvature crowning according to the specific conditions of bevel gears in order to obtain good modification effect, nevertheless, because of the complexity of the variable curvature crowning, the conventional method of using space spherical involute stretch and sweep standard gear model to remove tooth surface materials has been unable to meet the accurate requirements of the variable curvature crowned model, at the same time, this method can not realize parametric modeling of modification bevel gear. Therefore, this paper puts forward an easy to realize parametric modeling method of accurate variable curvature crowning for involute straight bevel gear based on ANSYS/LS-DYNA, Imageware, Matlab and Solidworks. This method can realize the accurate modeling for variable curvature crowned involute straight bevel gear and ensure the accuracy of modification gears and follow-up finite element simulation, meanwhile, it provides theoretical basis for parametric modeling of variable curvature crowned involute straight bevel gear. Finally, the superiority of variable curvature crowning is tested through numerical simulation under specific conditions.

• Periodical: Advanced Materials Research (Volumes 712-715)
• Pages: 1705-1713
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.712-715.1705
• Online since: June 2013
• Authors: Fang You Zhang*, Xi Jie Tian, Huan Yong Cui, Tai Ran Liu
• Keywords: 3-D Solid Modeling, Accurate Variable Curvature Crowning, Finite Element Analysis (FEA), Involute Straight Bevel Gear, Reverse Modeling

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