立式玻璃磨边机磨削力正交实验研究

Orthogonal Test Research on Grinding Force of Vertical Glass Edge Grinding Machine

针对立式玻璃磨边机测力仪安装空间狭小、工作环境恶劣的特点,采用自制的应变式磨削测力仪,运用正交实验方法,研究分析了V形砂轮磨边加工玻璃时的切向磨削力Fτ和径向磨削力Fn与砂轮线速度vc、进给速度vf和倒角c等工艺参数之间的关系及变化规律,并建立了切向磨削力Fτ和径向磨削力Fn的预测模型.结果表明:V形砂轮磨边加工玻璃时,Fτ和Fn随c和vf的增大而增大,Fτ随vc的增大而减小,vc对Fn没有显著影响.3个工艺参数中,对磨削力影响的主次关系为c>vf>vc.模型预测值与实际测量值的平均误差小于5%.

According to characteristics of vertical glass edge grinding machine, such as narrow installation space and foul working conditions, based on homemade strain type grinding dynamometer and orthogonal test, the relationships of tangential grinding force F and radial grinding force F to grinding wheel velocity vc, feed speed vf and chamfer size c were researched and analyzed when grinding glass edge through V-shaped grinding wheel, forecasting models of tangential and radial grinding forces were established. Result show that tangential and radial grinding force increases with the increase of chamfer size c and feed speed vf, tangential grinding force F, decreases with the increase of the grinding wheel velocity v, which has slight effect on radial grinding force F,. Among grinding parameters, chamfer size c has the most significant effect on grinding force, the second is feed speed vf, and the third is grinding wheel velocity %. The average error is less than 5% between values calculated by grinding force model and actual measuring values.