对型腔进行精加工，如下图所示。
加工流道，如下图所示。
（4）加工模拟
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（5）生成NC代码
A.热处理前的平面铣，留有余量0.5mm。
%
N0010 G40 G17 G90 G70 N0020 G91 G28 Z0.0 :0030 T00 M06
N0040 G0 G90 X-1.0157 Y.0086 S5000 M03 N0050 G43 Z-2.7559 H00 N0060 Z-3.1102
N0070 G3 X-.9843 Y.0118 Z-3.1604 I.0314 J-.1543 K.0083 F118.1 N0080 I0.0 J-.0118 N0090 G1 Y.3071 M08
N0100 G3 X-.7646 Y.2146 I0.0 J-.3071 N0110 X-.9843 Y.3071 I-.2197 J-.2146 N0120 G1 Y.1102 N0130 Z-3.0423 N0140 G0 Z-2.7559 N0150 X-1.0157 Y.0086 N0160 Z-3.1211
N0170 G3 X-.9843 Y.0118 Z-3.1713 I.0314 J-.1543 K.0083 N0180 I0.0 J-.0118 N0190 G1 Y.3071
N0200 G3 X-.7646 Y.2146 I0.0 J-.3071 N0210 X-.9843 Y.3071 I-.2197 J-.2146 N0220 G1 Y.1102 N0230 Z-3.0531 N0240 G0 Z-2.7559 N0250 X-1.0157 Y.0086 N0260 Z-3.1319
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N0270 G3 X-.9843 Y.0118 Z-3.1821 I.0314 J-.1543 K.0083 N0280 I0.0 J-.0118 N0290 G1 Y.3071
N0300 G3 X-.7646 Y.2146 I0.0 J-.3071 N0310 X-.9843 Y.3071 I-.2197 J-.2146 N0320 G1 Y.1102 N0330 Z-3.064 N0340 G0 Z-2.7559 N0350 X-1.0157 Y.0086 N0360 Z-3.1427
N0370 G3 X-.9843 Y.0118 Z-3.1929 I.0314 J-.1543 K.0083 N0380 I0.0 J-.0118 N0390 G1 Y.3071
N0400 G3 X-.7646 Y.2146 I0.0 J-.3071 N0410 X-.9843 Y.3071 I-.2197 J-.2146 N0420 G1 Y.1102 N0430 Z-3.0748 N0440 G0 Z-2.7559 N0450 X.9929 Y.0315 N0460 Z-3.1102
N0470 G3 X.9961 Y0.0 Z-3.1604 I-.1543 J-.0315 K.0083 N0480 I-.0118 J0.0 N0490 G1 X1.2913 N0500 G3 I-.307 J0.0 N0510 G1 X1.0945 N0520 Z-3.0423 N0530 G0 Z-2.7559 N0540 X.9929 Y.0315 N0550 Z-3.1211
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N0560 G3 X.9961 Y0.0 Z-3.1713 I-.1543 J-.0315 K.0083 N0570 I-.0118 J0.0 N0580 G1 X1.2913 N0590 G3 I-.307 J0.0 N0600 G1 X1.0945 N0610 Z-3.0531 N0620 G0 Z-2.7559 N0630 X.9929 Y.0315 N0640 Z-3.1319
N0650 G3 X.9961 Y0.0 Z-3.1821 I-.1543 J-.0315 K.0083 N0660 I-.0118 J0.0 N0670 G1 X1.2913 N0680 G3 I-.307 J0.0 N0690 G1 X1.0945 N0700 Z-3.064 N0710 G0 Z-2.7559 N0720 X.9929 Y.0315 N0730 Z-3.1427
N0740 G3 X.9961 Y0.0 Z-3.1929 I-.1543 J-.0315 K.0083 N0750 I-.0118 J0.0 N0760 G1 X1.2913 N0770 G3 I-.307 J0.0 N0780 G1 X1.0945 N0790 Z-3.0748 N0800 G0 Z-2.7559 N0810 M02 %
B.热处理后平面铣（半精加工，精加工）
%
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N0010 G40 G17 G90 G70 N0020 G91 G28 Z0.0 :0030 T00 M06
N0040 G0 G90 X-.8173 Y.0008 S5000 M03 N0050 G43 Z-2.7559 H00 N0060 Z-3.1102
N0070 G3 X-.8173 Y.0008 Z-3.1582 I-.084 J.119 K.0076 F39.4 N0080 X-.9843 Y0.0 Z-3.1969 I-.084 J.119 K.0076 N0090 G1 X-1.2795 M08
N0100 G3 X-.7798 Y-.2131 I.2952 J0.0 N0110 X-.7666 Y-.1995 I-.2045 J.2131 N0120 X-.7798 Y.2131 I-.2177 J.1995 N0130 X-1.2795 Y0.0 I-.2045 J-.2131 N0140 G1 X-1.0827 N0150 Z-3.0787 N0160 G0 Z-2.7559 N0170 X1.0013 Y-.2551 N0180 Z-3.1102
N0190 G3 X1.0013 Y-.2551 Z-3.1686 I-.017 J.1764 K.0093 N0200 X.9843 Y.0984 Z-3.1969 I-.017 J.1764 K.0093 N0210 I0.0 J-.0984 N0220 G1 Y.2953 N0230 G3 I0.0 J-.2953 N0240 G1 Y.0984 N0250 Z-3.0787 N0260 G0 Z-2.7559 N0270 M02 %
N0010 G40 G17 G90 G70
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