草籽喷播机变速箱齿轮疲劳裂纹萌生区域的确定

Broken teeth and gear wear is the most common form of damaged gear transmission gear, Alone in terms of broken teeth, normally broken teeth is in a place where there is fatigue crack, and stress analysis is a general method that determines fatigue crack initiation site.This essay is in another way that determine fatigue crack initiation region from a vibration deformation perspective. To grass seeds spraying machine transmission gears for the model, carried out a modal calculate, and use a analysis of first four natural frequencies deformationdisplacement picture, obtain a conclusion: Gear fatigue crack will take place Only in engagement portion,and these places are circumferentially distributed.