基于滚刀系统耦合动力学的轴承修形设计  

Design of Bearing Crown Based on Coupling Dynamics of the Disc Cutter System

作　　者：霍军周[1] 吴瀚洋[1] 赵奎山 李涛[1] 

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024 [2]大耐泵业有限公司,辽宁大连116021

出　　处：《东北大学学报（自然科学版）》2015年第12期1776-1779,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51375001;51309045);国家重点基础研究发展计划项目(2013CB035400)

摘　　要：为了防止滚刀轴承接触应力分布出现"边缘效应"现象,在滚子修形过程中确定合适的修形参数尤为重要.以突变冲击的滚刀动态载荷为基础,通过对滚刀系统的弯-轴-摆耦合动力学模型进行求解得到了滚刀轴承的载荷谱.然后基于滚刀轴承的滚子最大载荷,使用Ansys软件对滚刀轴承滚子进行修形设计以获取最佳的修形参数.分析结果表明,边滚刀轴承滚子最大载荷较中心滚刀和正滚刀增大了87%和20%.采用修形凸度量为0.029 mm和接触比为0.6的最佳修形参数修形的滚子消除了滚子滚道接触边缘的应力集中,改善滚子的接触应力分布,平均接触应力下降了17.26%,提高了滚刀轴承的寿命.To prevent the ＂edge effects＂of the cutter bearing ＇s contact pressure distribution,it is particularly important to determine the appropriate modification parameters. Based on dynamic load obtained through simulation,cutter bearing ＇s load spectrum was generated by establishing the dynamics model of the disc cutter ＇s bending-axial-swing coupling system. And based on the maximum roller load,the model of cutter bearing was made by the Ansys in order to obtain the best parameters. The results showthat compared with center cutter and face cutter,maximum load of edge cutter increases by 87% and 20%,respectively. The roller which is crowned of 0. 029 mm with contact ratio of 0. 6 eliminates the stress concentration at roller-raceway contact edge,improves the contact stress distribution,with the average contact stress decreased by 17. 26% and increases the contact fatigue life.

关 键 词：滚刀轴承 滚刀动态载荷 滚刀轴承载荷谱 修形 

分 类 号：TH133.332[机械工程—机械制造及自动化]