如图所示,刀具起点在(-40,-20),从切向切入到(-20,0)点,铣一个40mm的整圆工件,并切向切出,然后到达(-40,20)点。根据示图中的刀具轨迹判断,正确的程序是()。
A.……
N010G90G00G41X-20.0Y-20.0D01;
N020G01X-20.0Y0F200.0;
N030G02X-20.0Y0I20.0J0;
N040G01X-20.0Y20;
N050G00G40X-40.0Y20.0
……
B.……
N010G90G00G41X-20.0Y-20.0D01;
N020G01X-20.0Y0D01F200.0;
N030G02X-20.0Y0I-20.0J0;
N040G01X-20.0Y20;
N050G00G40X-40.0Y20.0
……
C.……
N010G90G00X-20.0Y-20;
N020G01X-20.0Y0F200.0;
N030G02X-20.0Y0I-20.0J0;
N040G01X-20.0Y20;
N005G01G00X-20.0Y20.0
……
D.……
N010G90G00X-20.0Y-20.0;
N020G91G01G41X20.0Y0D01F200.0;
N030G02X-20.0Y0I20.0J0;
N040G01X-20.0Y20.0;
N040G01X-20.0Y20.0;
……