任意形状钻头切削刃的受力预测模型

Computerized Drilling Force Prediction Models for Arbitrary Drill Point Geometry

建立了钻头切削刃的数学模型 ,并通过钻头切削刃上任意微元的几何关系、运动关系、受力关系及切削原理 ,建立了钻头任意形状切削刃的受力预测模型 ,同时推导出了其具体表达式 ,由第一只钻头的实验结果 ,确定了模型中的相关系数 ,并用第二只不同形状的钻头实验和预测进行了验证 ,证明了模型的准确性 ,为钻头寿命的预测模型提供了力的模型 ,同时也为同行学者提供了该领域的研究方法。

The geometry mathematical models and the force prediction mathematical models have been established by the geometry, motion and force analysis as well as the cutting theory on an arbitrary small element of the cutting edge of arbitrary drill point geometry. The detail expressions have been derived, the related coefficients of the mathematical models were determined by the experimental results of the first drill point. The mathematical models have been verified by the experimental results of the second deferent geometrical drill point. It is proven that the mathematical models proposed in the paper are correct,the force prediction models are provided for the life prediction models of a drill point,and a research method for the researchers in this area is given.