[讨论]数控车利用子程序编程加工工件碰到的难题！！！！！！

wenhual

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<P><B>数控车利用子程序编程加工工件碰到的难题！！！！！！
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<P><v:shapetype><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path extrusionok="f" gradientshapeok="t" connecttype="rect"></v:path><LOCK v:ext="edit" aspectratio="t"></LOCK></v:shapetype><v:shape><v:imagedata><FONT face="Times New Roman"></FONT></v:imagedata></v:shape></P>
<P><B>一，能得到正确结果的子程序加工
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<P><B><FONT face="Times New Roman">O0001;
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<P><B><FONT face="Times New Roman">T0101 M03 S300;
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<P><B><FONT face="Times New Roman">G00 X45. Z4.;
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<P><B><FONT face="Times New Roman">G94 X0Z0F0.3;
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<P><B><FONT face="Times New Roman">G00 X40.Z0;
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<P><B><FONT face="Times New Roman">M98 P61111 ;
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<P><B><FONT face="Times New Roman">G00 X45. Z4.;
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<P><B><FONT face="Times New Roman">M05;
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<P><B><FONT face="Times New Roman">M30;
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<P><B><FONT face="Times New Roman">O1111;
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<P><B><FONT face="Times New Roman">G42 G00 U-15. F0.3;
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<P><B><FONT face="Times New Roman">G03 U14.77 W-4.923 R8. F0.3;
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<P><B><FONT face="Times New Roman">G03 U6.43 W-39.877 R60. F0.3;
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<P><B><FONT face="Times New Roman">G02 U2.8 W-28.636 R40. F0.3;
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<P><B><FONT face="Times New Roman">G00 U8.;
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<P><B><FONT face="Times New Roman">G40 G00 W73.436;
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<P><B><FONT face="Times New Roman">G01 U-22. F0.3;
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<P><B><FONT face="Times New Roman">M99;
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<P><B><FONT face="Times New Roman">%
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<P><B>二，得到错误结果的子程序加工
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<P><B><FONT face="Times New Roman">O0001;
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<P><B><FONT face="Times New Roman">T0101 M03 S300;
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<P><B><FONT face="Times New Roman">G00 X45. Z4.;
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<P><B><FONT face="Times New Roman">G94 X0Z0F0.3;
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<P><B><FONT face="Times New Roman">G42 G00 X40.Z0;
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<P><B><FONT face="Times New Roman">M98 P61111 ;
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<P><B><FONT face="Times New Roman">G40 G00 X45. Z4.;
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<P><B><FONT face="Times New Roman">M05;
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<P><B><FONT face="Times New Roman">M30;
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<P><B><FONT face="Times New Roman">O1111;
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<P><B><FONT face="Times New Roman">G00 U-15. F0.3;
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<P><B><FONT face="Times New Roman">G03 U14.77 W-4.923 R8. F0.3;
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<P><B><FONT face="Times New Roman">G03 U6.43 W-39.877 R60. F0.3;
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<P><B><FONT face="Times New Roman">G02 U2.8 W-28.636 R40. F0.3;
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<P><B><FONT face="Times New Roman">G00 U8.;
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<P><B><FONT face="Times New Roman">G00 W73.436;
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<P><B><FONT face="Times New Roman">G01 U-22. F0.3;
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<P><B><FONT face="Times New Roman">M99;
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<P><B><FONT face="Times New Roman">%
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<P><B>只不过是刀补加的位置变了，可我不理解这里面的道理
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<P><B>请高手们帮忙解释一下。。。。。。
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wenhual

怎么没有朋友回复啊|！？！？！？

lzqsjh

<P>呵呵，你有没有想到当你回退刀的时候，也就是G00 W73.436时已经变成左补偿了。所以你必须在回退的时候取消刀补，再从新加刀补。</P>

chumeng

用循环

星火照亮

用G71循环。简单

xiaohongguang

广州980吧，错误在这里G00 W73.436;G42必须朝一个方向补偿，回退就不能用G42了