工程陶瓷圆弧成形磨削力预测与实验研究  

Prediction and Experimental Study on Grinding Force of Arc Profile for Engineering Ceramics

作　　者：陈信雨 刘明贺 齐钰 张一鸣 CHEN Xinyu;LIU Minghe;QI Yu;ZHANG Yiming(School of Mechanical Engineering,Shenyang Jianzhu University,Shenyang Liaoning 110168,China)

机构地区：[1]沈阳建筑大学机械工程学院,辽宁沈阳110168

出　　处：《机床与液压》2024年第4期34-38,共5页Machine Tool & Hydraulics

基　　金：国家自然科学基金面上项目(51975388);辽宁省教育厅科研项目(LJKZ0574)。

摘　　要：圆弧成形磨削是难加工零件复杂型面的加工方法,对其磨削力的研究有利于改善工程陶瓷的表面质量。基于圆弧砂轮的结构特点及尺寸趋近思想对陶瓷材料圆弧成形磨削力进行预测。通过研究磨粒对工程陶瓷的去除机制,提出建立单颗磨粒滑擦、塑性及脆性去除磨削力模型。基于砂轮磨粒尺寸与分布差异,利用概率统计方法对磨削中不同去除方式的有效磨粒数进行探讨,进而实现圆弧成形磨削力理论模型的构建。最后通过磨削力实验对理论模型进行验证。结果表明:法向磨削力和切向磨削力理论值与实验值平均误差分别为8.793%和9.986%;磨削力随着磨削深度及进给速度的增加而增加,随着砂轮速度的增加而减小。Arc profile grinding is a machining method for complex profiles of difficult-to-machine parts,and the study of its grind⁃ing forces will be beneficial to improve the surface quality of engineering ceramics.Based on the structure characteristics of arc profile grinding wheel and dimension approximation,the prediction of arc profile grinding force of ceramic material was performed.By studying the removal mechanism of abrasive grains on engineering ceramics,the grinding force model of single abrasive grain slip,plasticity and brittle removal was established.Based on the differences in the size and distribution of grinding wheel grains,a probabilistic statistical method was used to investigate the effective number of grains for different removal methods in grinding,and then a theoretical model of the grinding force for arc profile was constructed.Finally,the theoretical model was verified by grinding force experiments.The results show that the average errors between the calculated values and experimental values of normal grinding force and tangential grinding force are 8.793%and 9.986%,respectively;the grinding force increases with the increase of grinding depth and feed rate,and decreases with the increase of grinding wheel speed.

关 键 词：工程陶瓷 圆弧成形磨削 尺寸趋近 磨削力 

分 类 号：TG5[金属学及工艺—金属切削加工及机床]