Development of Tooth Contact and Mechanical Efficiency Models for Face-milled and Face-hobbed Hypoid and Spiral Bevel Gears
Year: 2009
Type: article
Abstract: A computationally efficient load distribution model is proposed for both facemilled and face-hobbed hypoid gears produced by Formate and generate processes.Tooth surfaces are defined directly from the cutter parameters and machine settings.A novel methodology based on the ease-off topography is used to determine the unloaded contact patterns.The proposed ease-off methodology finds the instantaneous contact curves through a surface of roll angles, allowing an accurate unloaded tooth contact analysis in a robust and accurate manner.Rayleigh-Ritz based shell models of teeth of the gear and pinion are developed to define the tooth compliances due to bending and shear effects efficiently in a semi-analytical manner.Base rotation and contact deformation effects are also included in the compliance formulations.With this, loaded contact patterns and transmission error of both face-milled and face-hobbed spiral bevel and hypoid gears are computed by enforcing the compatibility and equilibrium conditions of the gear mesh.The proposed model requires significantly less computational effort than finite elements (FE) based models, making its use possible for extensive parameter sensitivity and design optimization studies.Comparisons to the predictions of a FE hypoid gear contact model are also provided to demonstrate the accuracy of the model under various load and misalignment conditions.Laboratory for their financial support throughout my study.My sincere thanks go to Prof. Hermann J. Stadtfeld from The Gleason Works who spent valuable time teaching me fundamental concepts of bevel gear design and manufacturing, and also for having attended my dissertation defense.I would also like to thank Jonny Harianto, Samuel Shon and all my lab mates for their help and friendship throughout my study at OSU and beyond.Finally, I deeply appreciate the love and trust shown toward me by my parents, my grandparents, my uncles and aunts, my sisters
Author: Mohsen Kolivand
Institution: The Ohio State University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W165769951