毛坯为棒料,粗加工切削深度为7mm,进给量0.3mm/r,主轴转速为500r/mm,精加工余量X向4mm(直径上),Z向2mm,进给量为0.15mm/r,主轴转速为800r/min,程序起点见图。
用G70,G71加工举例(采用混合编程)
%0003
N01 G92 X200.0 Z220.0 ;坐标系设定
N02 G00 X160.0 Z180.0
M03 S800
G95 F0.30 (转进给)
N03 G71 U7.0 R1.0 P04 Q10 U4.0 W2.0 S500 ;(粗车循环)
N04 G00 X40.0 S800
N05 G01 W-40.0 F0.15
N06 X60.0 W-30.0
N07 W-20.0
N08 X100.0 W-10.0
N09 W-20.0
N10 X140.0 W-20.0
N11 G94 F1000
N12 G01 X200.0 Z220.0
N13 M05
N14 M30