1+X数控车铣加工职业技能等级(初级)编程方法研究

Research on Programming Method of Professional Skill Level(Primary)of 1+X NC Turning and Milling

1+X职业技能等级考证的平面零件,加工工艺较复杂,切削余量不大,尺寸精度、表面粗糙度和形位公差都有要一定求。该零件材料为2A12(硬铝),由于硬铝材料在加工过程中主要有粘刀、不断屑、断刀、易变形等特点,需采用铝合金铣刀加工。为了提高加工效率,采用一次装夹完成加工,分粗精加工等。为了解决工件垂直度要求,采用平行垫铁辅助,虎钳装夹等辅助加工。为了提高编程效率以及编程准确率,文中利用Mastercam 2021软件自动编程。

For plane parts verified by 1+X professional skill level,the processing technology is complex,the cutting allowance is small,and there are certain requirements for dimensional accuracy,surface roughness and geometric tolerance.The material of the part is 2A12(hard aluminum).Because the hard aluminum material mainly has the characteristics of sticking knife,constant chip,broken knife and easy deformation in the processing process,it needs to be processed with aluminum alloy milling cutter.In order to improve the machining efficiency,one-time clamping is used to complete the machining,including rough and finish machining.In order to meet the requirements of workpiece perpendicularity,parallel sizing block and vise clamping are used for auxiliary processing.In order to improve the programming efficiency and accuracy,Mastercam 2021 software is used for automatic programming.