BTA深孔钻削过程及钻削力分布规律试验研究

Experimental Study on Drilling Process and Cutting Force Distribution Laws for BTA Deep Hole Drill

搭建了BTA钻削试验研究平台和钻削力测试系统,针对三种典型结构BTA钻头切削不同直径圆柱状工件进行试验研究,分析了BTA钻头刀齿的位置分布以及几何尺寸对钻削过程的影响,研究了三种典型结构BTA钻头单位刀齿钻削力沿半径的分布规律。结果表明,三种典型结构BTA钻头单位刀齿钻削力均呈沿半径增大方向递增的非均匀分布趋势,刀齿位置分布与几何尺寸影响单位刀齿径向力大小,不影响单位刀齿主切削力与轴向力的大小以及单位刀齿钻削力沿半径的分布规律。

The influence of the teeth location and geometric dimensions of BTA drill on the drilling process is analyzed,and cutting force distribution laws of unit cutting tooth of three typical BTA drill is studied.It ran experiments on three typical BTA drill cutting the different diametercylinder workpiece based on the experimental platforms of BTA drilling and cutting force measuringsystem.The results show that the cutting force components of unit cutting tooth of three typical BTA drill presents the non-uniform distribution law which is increasing with the radius increases.The teeth location and geometric dimensions of BTA drills only affect the radial force of unit tooth,but has negligible impact on the main cutting force and axial force of the unit tooth and the distribution laws of the drilling force of unit tooth along the radius.