基于折截面法的两模数直齿轮副齿根应力分析  

Tooth Root Stress Analysis of Two-modulus Spur Gear Pair Based on Broken-line Section Method

作　　者：朱永越 李琦 ZHU Yongyue;LI Qi(School of Engineering,University of New South Wales,Sydney New South Wales 4385,Australia;3C R&D Center,Suzhou Secote Precision Electronic Co.,Ltd,Suzhou Jiangsu 215124,China)

机构地区：[1]新南威尔士大学工程学院,新南威尔士州悉尼4385 [2]苏州赛腾精密电子股份有限公司3C研发中心,江苏苏州215124

出　　处：《安徽理工大学学报（自然科学版）》2023年第1期86-92,共7页Journal of Anhui University of Science and Technology:Natural Science

摘　　要：为研究两模数直齿轮副齿根应力特性,根据渐开线齿轮齿廓加工原理,推导出两模数渐开线直齿轮副齿根过渡曲线方程,在此基础上推导出折截面法计算两模数齿轮副的齿根应力公式,获得了不同模数比情况下齿根应力在齿根过渡曲线上的应力分布和齿根应力最大值。结果表明:在过渡曲线上随着切线角的增大,主动轮(小齿轮)、从动轮齿根应力先增大后减小;主动轮(小齿轮)齿根应力最大值随模数比的增大而减小,从动轮齿根应力最大值随模数比的增大而增大,增大模数比可以显著减小主动轮(小齿轮)的齿根应力。In order to research the root stress characteristics of the two-module spur gear pair,the equation of the tooth root transition curve for this gear pair is derived based on the machining principle of the tooth profile for the involute gear.On this basis,the tooth root stress formula of the two-module gear pair calculated by the broken-line section method is derived.And then,the stress distribution and the maximum value of the tooth root stress on the tooth root transition curve are obtained under different modulus ratios.The results show that the root stress of the driving gear(pinion)and driven gear firstly increases and then decreases with the increase of the tangent angle on the transition curve.And the maximum root stress of the driving gear(pinion)decreases with the increase of modulus ratio,while the maximum root stress of the driven gear increases with the increase of modulus ratio,moreover,increasing the modulus ratio can significantly reduce the tooth root stress of the driving wheel(pinion).

关 键 词：两模数 直齿轮副 过渡曲线 折截面法 齿根应力 

分 类 号：TH132[机械工程—机械制造及自动化]