N10 G90 G95			;绝对尺寸，转进给

N20 G00 X100 Z150	        ;快速定位到换刀点

N30 T3 D1			;换刀

N40 M04 S300			;主轴反转300r/min

N50 G00 X47.1 Z5		;进刀至起点，第1次进刀0.9mm

N60 G33 Z-52 K2		        ;切削螺纹

N70 G00 X58			;退刀

N80 Z5				;返回进刀点

N90 X46.5			;第2次进刀0.6mm

N100 G33 Z-52 K2	

N110 G00 X58	

N120 Z5	

N130 X45.9			;第3次进刀0.6mm

N140 G33 Z-52 K2	

N150 G00 X58	

N160 Z5	

N170 X45.5			;第4次进刀0.4mm

N180 G33 Z-52 K2	

N190 G00 X58	

N200 Z5	

N210 X45.4			;第5次进刀0.1mm

N220 G33 Z-52 K2	

N230 G00 X58	

N240 G00 X100 Z150	        ;快速退刀

N250 M30			;程序结束，复位到开始