摘要
通过试验测试了任意形状钻头切削刃的轴向力和扭矩 ,为钻头受力预测提供了一套完整的研究方法。试验中 ,将测力传感器固定在数控机床上 ,预先钻一小孔的工件固定在传感器上 ,用夹具把钻头固定在数控机床夹头上 ,工件和传感器不动 ,钻头以某一转速和进尺钻孔 ,钻头受到的轴向力和扭矩通过计算机采集系统反映。试验共测试了 8种编号的钻头。测试结果表明 ,钻头主切削刃和横刃轴向力分别占总轴向力的 1 5 5%～ 2 3 0 %和 77 0 %～ 84 5%,主切削刃和横刃的扭矩分别占总扭矩的 83 4 %～ 90 5%和 9 5%～ 1 6 6%,说明钻头轴向力主要由横刃承担 ,而扭矩主要由主切削刃承担。测试结果为钻头受力的合理分配及结构优化设计提供了依据。
The apparatus and method for testing the thrust and torque on the main cutting edge and chisel edge of drill point was introduced. The curves of the thrust and torque of drill point vs time have been got by the apparatus, and the thrust and torque of the cutting edge and chisel edge of drill point have been obtained. The results provide the tested data for the force prediction of drill point. According to the tested results, the main cutting edge of drill point is chiefly subjected to torque, its torque is 83 4%～90 5% of the total torque, but the chisel edge of drill point is mainly subjected to thrust, its thrust is 77 0%～84 5% of the total thrust. The study provides the reference data for the reasonable distribution of drill point and its optimal design.
出处
《石油机械》
北大核心
2000年第8期20-22,2,共3页
China Petroleum Machinery
基金
S .M .Wu机械制造研究中心项目
