High feed milling is a new kind of rough machining method;which is important to study the tool wear mechanism for improving tool life and processing efficiency.High feed milling experiments of TC17 titanium alloy were carried out by using TiA1N-coated carbide indexable tool.The influence of the cutting parameters on the cutting force was studied.Comparing with cutting width and spindle speed,feed per tooth and cutting depth had a more significant effect on cutting force.Moreover,the prediction model for cutting force was established via multiple linear regression.By testing the flank wear,the tool wear morphology and wear mechanisms were analyzed,in whichthe main wear morphology were flank wear and material peeling off,and the main wear mechanism was adhesive wear and diffusion wear at the same time.Within the scope of the testing parameters,the selected cutting parameters are of:fz=0.8 mm/z,αp=0.5 mm,ae=20 mm,s=600 r/min.%快速铣是一种新兴的粗加工方法,研究它的刀具磨损机理对提高刀具寿命和加工效率有着重要的作用.采用硬质合金快速铣刀片在工件上进行了钛合金TC17铣削实验,研究了不同切削参数对切削力的影响,采用多元线性回归建立了切削力数学预测模型,分析了各铣削参数对切削力的影响规律,通过对后刀面的检测,分析了刀具磨损形貌和磨损机理.结果表明:每齿进给量、切削深度对切削力的大小影响显著,切削宽度和主轴转速影响很小,在试验参数范围内,选用切削参数组合为:fz=0.8 mm/z、αp=0.5 mm、ae=20 mim、s=600 r/min进行可转位刀片的磨损试验,快速铣可转位刀片的主要磨损形貌为后刀面磨损、材料剥落,后刀面主要磨损机理为黏结磨损,同时会产生一定程度的扩散磨损.
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