零件型面对数控铣刀切削寿命的影响研究

Research on influence of part profile factor on cutting life of CNC milling tool

以研究单一角度曲面零件和单一R弧面零件铣削加工为切入点,阐述刀具切削寿命的相关知识,分析了φ10R5球头铣刀铣削零件各表面时的状态,由此得出参与切削的最大切削刃与球刀圆心形成的夹角,计算得出实际参与切削的刀长度,并得到切削寿命与型面关系的倍数n,获得不同铣刀切削多角度斜面、R弧面时的切削寿命。通过理论分析、样件零件寿命测试、现场生产零件实际加工数据验证,最终得出φ10R5球头铣刀寿命和理论计算数据基本相符的结论。

Based on the study of the parts with single angle curved surface and the single R surface milling,it expounded the relevant knowledge of the tool cutting life,and analyzed the state of the various surfaces of the parts by milling withφ10R5 ball head milling cutter.Thus,it obtained the biggest cutting edge and the angle formed by the center of spher mills.After calculation,the actual length of the cutting edge,and the multiple relation of cutting life with surface were obtained.The different tool life of milling cutter when cutting multi-angle inclined surface and R-cambered sur⁃face was obtained.Through theoretical analysis,sample parts life test,the field production of parts of the actual processing data verification,the final conclusion ofφ10R5 ball end milling cutter life and theoretical calculation data were basically consistent.