车削如图所示工件的M30×3.5螺纹。取精加工次数2次,螺纹退尾长度为7mm,螺纹车刀刀尖角度60°,最小背吃刀量取0.1mm,精加工余量取0.3mm,螺纹牙型高度为2.3mm,第一次背吃刀量取0.6mm,螺纹小径为25.4mm。前端倒角2×45°。
O0076
N10 G92 X80 Z50
N20 M03
N30 M06 T0101
N40 G90 G00 X22 Z2
N50 G01 X30 Z-2 F100
N60 Z-40
N70 X34
N80 Z-55
N90 G00 X80 Z50
N100 T0100
N110 M06 T0202
N120 G00 X45 Z10
N130 G76 C2 R7 A60 X-24.6
Z-35 I0 K2.3 U0.3
V0.1
Q0.6 F3.5
N140 G00 X80 Z50
N150 T0200
N160 M05
N170 M02