摘要
根据磨粒突出高度符合瑞利分布的假设,建立关于单颗磨粒的最大未变形切削深度模型。考虑变摩擦及机床主轴振动的影响,以单颗磨粒为研究对象,把磨削力分为磨削变形力和摩擦力,引入主轴振动修正系数,结合单位面积内的磨粒数目,建立了单位宽度上磨削的总法向力和总切向力的磨削力理论模型。结果证明:切向、法向磨削力理论值与试验值平均相对误差分别为7.97%、8.19%,误差最大值不超过15%,模型存在较高的准确性。
Based on the assumption that the abrasive protrusive height obeys Rayleigh distribution, the model of the maximum undeformed cutting depth of a single abrasive particle was established.Considering the influence of variable friction and vibration of machine spindle, taking a single particle as the research object, and the grinding force was divided into grinding deformation force and friction.The vibration correction coefficient of main shaft was introduced, combined with the particle number of per unit area, the total normal force and tangential force of grinding force theoretical model in a unit width was established.The results show that the average relative errors between the theoretical and experimental values of tangential and normal grinding forces are 7.97% and 8.19% separately, and the maximum error does not exceed 15%.
作者
杜添贺
马廉洁
邱喆
李红双
毕长波
周云光
DU Tianhe;MALianjie;QIU Zhe;LI Hongshuang;BI Changbo;ZHOU Yunguang(Schoolof Mechanical Engineering and Automation,Northeastern University,Shenyang Liaoning 110819,China;School of Control Engineering,Northeastern University at Qinhuangdao,Qinhuangdao Hebei 066004,China)
出处
《机床与液压》
北大核心
2022年第22期1-5,17,共6页
Machine Tool & Hydraulics
基金
国家自然科学基金面上项目(51975113)
国家自然科学基金青年科学基金项目(51905083)。
关键词
磨削力
瑞利分布
理论模型
氧化锆陶瓷
Grinding force
Rayleigh distribution
Theoretical model
Zirconia ceramics
