砂带磨损对螺杆转子磨削去除深度影响分析  

Analysis of the influence of abrasive belt wear on the removal depth of grinding screw rotor

作　　者：陈斯睿 孙兴伟[1,2] 杨赫然 刘寅[1,2] CHEN Sirui;SUN Xingwei;YANG Heran;LIU Yin(School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,China;Key Laboratory of Numerical Control Manufacturing Technology for Complex Surfaces of Liaoning Province,Shenyang 110870,China)

机构地区：[1]沈阳工业大学机械工程学院,沈阳110870 [2]辽宁省复杂曲面数控制造技术重点实验室,沈阳110870

出　　处：《金刚石与磨料磨具工程》2024年第2期228-236,共9页Diamond & Abrasives Engineering

基　　金：辽宁省应用基础研究计划项目(2022JH2/101300214);2022年度辽宁省教育厅高等学校基本科研项目面上项目(LJKMZ20220459)。

摘　　要：为保证螺杆转子表面磨削加工材料去除的均匀性,考虑砂带磨料磨损对磨削去除深度的影响,建立螺杆转子材料去除深度数学模型。根据弹塑性变形理论,结合磨削过程中磨粒的磨损规律,建立单颗磨粒材料去除率理论模型。将磨粒的磨损分为快速磨损阶段和稳定磨损阶段2个阶段。基于单位接触面积上磨粒的数目和磨粒的出刃规律,运用数值积分和接触压力计算出磨粒的最大切削深度,利用积分建立基于砂带磨损的宏观材料去除率数学模型。该数学模型考虑了砂带的磨损,其预测值和试验值相比,最大误差为9.6%,最小误差为4.1%。该试验数据充分验证了模型的有效性,可以为保障螺杆转子廓形精度提供理论基础。To ensure the uniformity of material removal during surface grinding of screw rotors,a mathematical model for the material removal depth of screw rotors is established,considering the impact of abrasive wear on grinding removal depth.Based on the theory of elastic-plastic deformation and the wear pattern of abrasive particles during grinding,a theoretical model for the removal rate of single abrasive material is established.The wear of abrasive particles is divided into two stages:the rapid wear stage and the stable wear stage.Based on the number of abrasive particles per unit contact area and the rule of abrasive cutting edge,the maximum cutting depth of abrasive particles is calculated by numerical integration and contact pressure,and the mathematical model of macroscopic material removal rate based on abrasive belt wear is established.The model consideres the wear of the sand belt.The maximum error of the predicted value is 9.6%,and the minimum error is 4.1%compared with the experimental value.The experimental data fully verify the effectiveness of the model,and can provide a theoretical basis for ensuring the profile accuracy of the screw rotor.

关 键 词：砂带磨损 数学模型 去除深度 螺杆转子 模型验证 

分 类 号：TG70[金属学及工艺—刀具与模具] TG580