五轴钻孔问题恳求各位高手回答

lljjhh

有谁做过五轴钻孔的请教一个问题，下面程序N0140 X2.1579 Y-1.0945 Z-.802 A30.223 B340.346 R-.2902中R的含义是什么
7 O* K0 T  [0 e3 C, N: Y+ ]! E%
N0010 G40 G17 G94 G90 G70
$ Y) O- u7 D6 y5 b9 s0 yN0020 G91 G28 Z0.0
:0030 T00 M06
N0040 G0 G90 X1.6114 Y-.1268 A35.538 B0.0 S0 M03
N0050 G43 Z1.0582 H00
N0060 G81 X1.6114 Y-.5858 Z-.0962 R.4156 F9.8
N0070 X.9815
N0080 X.0366
N0090 X-.2784
N0100 X.3516
6 m, _, b5 _6 ?, NN0110 X.6665
N0120 X1.2965
+ b# u& Q2 E2 {4 {: K  Z7 NN0130 X1.9264
* A. C" O5 M' S* H+ s& ^' W7 i" f/ eN0140 X2.1579 Y-1.0945 Z-.802 A30.223 B340.346 R-.2902
N0150 X2.1759 Y-1.4292 Z-1.4947 A16.895 B328.259 R-.9829
N0160 X2.115 Y-1.7648 Z-2.0254 A0.0 B324.462 R-1.5136
, k; c4 f1 q4 T" ]. P; uN0170 Y-1.4499
4 c! O  P) @/ V0 ?6 j2 oN0180 G80
' c7 I5 ~% D$ J, v0 I+ |N0190 G0 Z-.871
$ q4 ~- t% b8 p' l* g5 LN0200 X2.574
N0210 Z-.6019
$ H8 n0 @, v( p) h6 I: r. LN0220 X2.1974 Y-1.1811
N0230 M02
%

五两三

R表示钻孔起始位置。
/ l* h5 [: T: h. a% HR-.2902表示从Z-.2902的高度开始钻孔。