Bending Load Capacity Enhancement Using Asymmetric Tooth Profile

The Bending Load Capacity Enhancement Using Asymmetric Tooth Profile aims at developing a new method to enhance the bending load capacity of gear tooth using Asymmetric Toothprofiles and thus improving the fatigue strength of the tooth by heat treatment or surface quality improvement.

Any power transmission devices operate in one direction, only one side of the tooth surfaces (the front oftooth) is in mesh. So the tooth is not necessary to be a symmetric form. Different standard pressure angles are used in the front and back profiles of an asymmetric tooth.

In this project, tooth root stress and bending stiffness of the asymmetrical tooth for several combinations of standard pressure angles were calculated by the use of finite element method. As gears are functional units used for transmission of power in transmission systems,fine module gears are used for low noise, vibration and for compact size of transmission system as the smaller gears will lead to insufficiency in bending load carrying capacity which is a serious problem in plastic and sintered gears.

CONCLUSION:

This project analyses  bending stress with the aid of FEM for asymmetric and symmetric tooth and has concluded that Asymmetric teeth have better performance than symmetric teeth for bending stress minimization.It has also found that as pressure angle on drive side increases, the bending stress decreases and bending load carrying capacity increases.The calculations were performed for not only the maximum stress but also the stress amplitude from fillet to tooth root considering the gearing procedure

Download Bending Load Capacity Enhancement Using Asymmetric Tooth Profile B Tech/ BE Final Project Paper Presentation and Seminar PPT.