ZrO2陶瓷平面磨削力仿真分析与实验研究

摘要

In order to study effects of wheel speed,grinding depth and workpiece feed-speed on plane grind-ing force of zirconia ceramic grinding to improve the ceramic machining efficiency and machining accuracy. Multiple sets of grinding parameters is designed by the orthogonal experiment and using planar dynamometer measurements to measure the grinding force under different grinding parameters.Besides,using ABAQUS to establish a single finite element model of single abrasive grinding zirconia ceramics, compare and analysis the result of the experiment and finite analysis model.With the increase of the grinding speed from 30 to 50m/s,grinding force decreases;with the increase of the grinding depth from 5 to 15μm,grinding force in-creases gradually.The experimental results and simulation results are basically identical.The conclusion is that the maximum grinding depth on normal grinding force effect, with the increase of the grinding depth, normal grinding force increases;influence of wheel speed on the tangential grinding force is the largest,with the increase of line speed,tangential grinding force increases.The research results play an important role in improving the efficiency of machining ceramics and the quality of processing.%研究工程陶瓷磨削参数对磨削力的影响,参数有金刚石砂轮线速度、磨削深度及工件进给速度,提高陶瓷加工效率和加工精度.以金刚石砂轮平面磨削ZrO2陶瓷为例,通过正交实验法设计多组关于金刚石砂轮线速度、磨削深度和工件进给速度的磨削组合参数,利用平面测力仪测量不同磨削参数下的磨削力.同时,运用ABAQUS建立单颗金刚石磨粒磨削ZrO2陶瓷的有限元模型,分析磨粒磨削陶瓷过程,将实验结果与仿真结果进行对比分析.金刚石砂轮线速度由30m/s增大到50m/s时,磨削力逐渐减小;平面磨削深度由5μm增大到15μm,磨削力逐渐增大;工件随着进给速度的增加,磨削力逐渐增大;实验结果与仿真结果基本一致.影响法向磨削力最大的因素是磨削深度,当平面磨削深度增大,法向磨削力也随之增大;砂轮线速度对切向磨削力的影响最大,随着线速度的增大,切向磨削力增大.研究结果对于提高工程陶瓷加工效率,改进加工质量具有重要的促进作用.