CAJ | 학술논문

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.
위료방지곤도축승접촉응력분포출현“변연효응”현상，재곤자수형과정중학정합괄적수형삼수우위중요.이돌변충격적곤도동태재하위기출，통과대곤도계통적만-축-파우합동역학모형진행구해득도료곤도축승적재하보.연후기우곤도축승적곤자최대재하，사용 Ansys 연건대곤도축승곤자진행수형설계이획취최가적수형삼수.분석결과표명，변곤도축승곤자최대재하교중심곤도화정곤도증대료87%화20%.채용수형철도량위0.029 mm 화접촉비위0.6적최가수형삼수수형적곤자소제료곤자곤도접촉변연적응력집중，개선곤자적접촉응력분포，평균접촉응력하강료17.26%，제고료곤도축승적수명.
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 show that 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.