UG中生成Nurbs数控程序的方法

liangquan6

好像UG4.0中的mill3ax_turbo.def文件就可以进行生成Nurbs代码的生成，因为我看了一下源文件，内部有生成Nurbs代码的能力。

可我我现在仍然不能生成Nurbs代码，我怀疑是不是我的生成的方法错误，请问是不是用下面这样就能生成Nurbs代码了呢。

我生成的CLSF已经带有Nurbs代码了：

GOTO/93.5646,43.1165,13.0000,0.0000000,0.0000000,1.0000000
PAINT/COLOR,6
FEDRAT/MMPM,250.0000
NURBS/3
KNOT/1.0000000
CNTRL/93.2486,43.4734,12.8723
CNTRL/92.8750,43.8559,12.7291
NURBS/3
KNOT/1.0000000
CNTRL/93.4155,43.9133,12.5834
CNTRL/93.9534,43.9912,12.4378
NURBS/3
KNOT/1.0000000
CNTRL/93.4155,43.9133,12.2922
CNTRL/92.8750,43.8559,12.1466
NURBS/3
KNOT/1.0000000
CNTRL/93.4307,43.2832,11.9328
CNTRL/93.9534,42.6801,11.7190
NURBS/3
KNOT/1.0000000
CNTRL/93.4307,43.2832,11.5053
CNTRL/92.8750,43.8559,11.2915
……
……

可是在后处理后就没有Nurbs代码了：
N0040 G0 G90 X93.565 Y43.117 S0 M03
N0050 G43 Z13. H00
N0060 G1 X93.415 Y43.918 Z5.396 F250. M08
N0070 X93.953 Y43.991 Z5.25
N0080 X93.418 Y43.272
N0090 X93.953 Y42.68
N0100 G0 Z8.25
N0110 Z13.
N0120 X93.049 Y43.671
N0130 Z8.25
N0140 G1 Z5.25
N0150 X93.953 Y49.042
N0160 X93.128 Y48.925
N0170 X92.302 Y48.823
N0180 X91.412 Y48.728
N0190 X91.705 Y37.608
N0200 X93.953 Y34.616
N0210 G0 Z8.25
N0220 Z13.
N0230 X90.975 Y48.688
N0240 Z8.25
N0250 G1 Z5.25
N0260 X93.953 Y54.103
N0270 X76.12 Y53.367
……
……

到底是怎么回事呀？

fengyoucad