中国机械工程2024，Vol.35Issue(3)：381-393,13.DOI:10.3969/j.issn.1004-132X.2024.03.001
外圆磨削18CrNiMo7-6力模型及表面完整性研究
Study on Force Model and Surface Integrity of Cylindrical Grinding 18CrNiMo7-6 Steels
摘要
Abstract
In order to accurately and effectively control the influences of grinding parameters on grinding force and surface integrity,a three-stage grinding force theoretical model was established based on the plastic deformation,indentation theory and shear strain effect between abrasive particles and materials by analytical method.The brown corundum grinding wheels were selected for grinding experiments to explore the effects of grinding parameters on grinding force and the effects of grinding parameters and grinding force on surface integrity.The optimal processing parameters for cylindrical grinding were obtained through orthogonal experiments of cylindrical transverse grinding.The results show that the average prediction errors of normal and tangential grinding forces in the cylindrical grinding force model are 5.56%and 7.08%,respectively.The radial feed speed of the grinding wheel has the greatest impact on grinding force,followed by grinding width,and the influences of workpiece speed and grinding wheel particle size are relatively small.The radial feed speed and grinding width of the grinding wheel have a significant impact on residual stress,and the particle size of the grinding wheel has the greatest impact on surface roughness.As the grinding force increases,the surface roughness value continuously increases,and the residual stress firstly decreases and then increases.The maximum residual stress value along the depth direction firstly increases and then decreases.Within the parameters taken in the experiments,the distribution range of residual stress is basically 20～40μm.The optimal combination of processing parameters is a radial feed speed of 0.15 mm/min for the grinding wheel,a workpiece speed of 120 r/min,a grinding width of 10 mm,and a grinding wheel particle size of 80.关键词
外圆磨削/横向磨削/磨削力模型/18CrNiMo7-6钢/表面完整性Key words
cylindrical grinding/plunge grinding/grinding force model/18CrNiMo7-6 steel/sur-face integrity分类
机械制造引用本文复制引用
王栋,陈磊,张志鹏..外圆磨削18CrNiMo7-6力模型及表面完整性研究[J].中国机械工程,2024,35(3):381-393,13.基金项目
国家自然科学基金重点项目(U1804254) （U1804254）
河南省重大科技专项(201400211200) （201400211200）
