基于有限元法的齿端修形设计及影响因素分析  

Gear Tooth End Relief Design and Its Influence Factor Analysis based on FEM

作　　者：刘晓勇[1] 杨忠林 苏铁熊[1] 张翼[1] 

机构地区：[1]中北大学机械与动力工程学院,山西太原030051 [2]内蒙古第一机械集团有限公司,内蒙古包头014000

出　　处：《机械传动》2014年第7期71-74,共4页Journal of Mechanical Transmission

基　　金：中北大学校科学基金(2012)

摘　　要：以某增速传动齿轮副为研究对象,运用三维接触有限元法计算分析了啮合过程中轮齿沿齿向的弯曲变形和接触应力分布,并与经典计算方法比较验证了有限元结果的合理、可信。针对轮齿变形引起的接触应力齿端偏载现象,结合啮合过程齿面偏差提出了齿端修形设计和计算方法,修形后齿轮接触应力分布得到改善,表明该方法的合理性。计算分析了法向力、齿宽、分度圆直径、支撑跨度等因素对齿端修形量的影响规律,结果表明每个参数对修形量都有影响,其中法向力和齿轮宽径比影响程度较大。Taking an increasing speed transmission gear pair as research objects, the longitudinal bending deformation and contact stress distribution of gear tooth meshing are analyzed with three dimension contact finite element analysis method. The results reasonability and credibility of the finite element method is verified through comparing the results of the classical method. For the tooth end bi- as load of contact stresses resulting from the elastic deformation of gear tooth, an approach for gear tooth end relief design and calculation is proposed according to tooth face deflection in the meshing process. The distribution of contact stresses is improved after gear tooth modification and the reasonability of the approach is validated. The influence law of normal force, tooth width of gear, pitch diameter and supporting span on the amount of gear tooth end relief is calculated and analyzed. The results show that all above factors have influence on gear tooth end relief and that the normal force and width--diameter ratio of gear has greater effects.

关 键 词：接触应力分布 齿向修形 轮齿变形 影响规律 有限元 

分 类 号：TH132.41[机械工程—机械制造及自动化]