切削加工钛合金的切削参数优化研究

Research on Optimization of Cutting Parameters Based on Machining Titanium Alloy

钛合金材料因其具有强度高、耐腐蚀性好、耐热高等特点被广泛用于航空航天、舰船、民用工业等各个领域。而钛合金是典型的难加工材料,切削钛合金的加工效率和质量较低。本文选用了不同种牌号的硬质合金刀具,进行了切削加工TC4钛合金刀具磨损及耐用度试验。基于切削加工钛合金的刀具磨损及耐用度试验结果分析,确定了切削速度、切削深度和每齿进给量等切削参数作为设计变量,建立了以切削加工钛合金最大金属去除率为优化目标函数,依据实际加工条件设计了相应的约束条件,最终建立了切削参数优化数学模型。

Because of its high strength,good corrosion resistance and high heat resistance,titanium alloy are widely used in aerospace,ships,civilian industry and other fields. It is a typical difficult-to-machine material,the machining efficiency and quality of the milling is low. Different kinds of carbide cutting tools are used to do the tool wear experiment of machining TC4 titanium alloy,and on this basis,through the optimization of cutting parameters,this paper get the biggest metal removal rate of milling titanium alloy. To determine the cutting parameters of cutting speed,cutting depth and feed per tooth as design variables,and established the objective function of the largest metal removal rate,according to the actual processing conditions for design the corresponding constraint conditions,cutting parameters optimization mathematical model was established.