一种叠层结构钻削力预测模型的研究

摘要

针对航空航天制造使用的碳纤维复合材料和钛合金叠层结构材料的特殊特性,将钻头主切削刃离散成许多个微元,把切削过程简化为微元的斜角切削,采用数学分析和经验结合的方法,建立标准麻花钻的钻削力预测模型,运用Matlab/Simulink进行钻削力仿真,将仿真结果和试验结果进行比较和验证,结果表明钻削力模型符合实际情况.将得到的钻削力预测模型应用到钻削叠层结构中,得到一种钻削叠层结构的钻削力预测模型.%Because of the specificity of the mechanical properties of carbon fiber reinforced plastics (CFRP) and titanium alloy stacks, more and more attention is given to it in the aerospace manufacturing industry, so the research on cutting force for drilling stacks becomes always a hot topic. The primary cutting edge is divided into a series of elements and the cutting process is simplified to oblique cutting of every element. The mathematical analysis is used with experience to build the drilling force prediction model for standard twist drill and the cutting force is simulated with MATLAB / Simulink. Comparing the results of simulation and experience, it comes to the conclusion that the prediction model above is effective.