试题与答案

如图所示,刀具起点在(-40,-20),从切向切入到(-20,0)点,铣一个40m

题型:单项选择题

题目:

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;

……

答案:

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