Siemens SINUMERIK 840D sl Function Manual page 167

Program code
N80 $TC_DP24[1,1]=25
N90 $TC_CARR7[2]=0 $TC_CARR8[2]=1 $TC_CARR9[2]=0
N100 $TC_CARR10[2]=0 $TC_CARR11[2]=0
$TC_CARR12[2]=1
N110 $TC_CARR13[2]=0
N120 $TC_CARR14[2]=0
N130 $TC_CARR21[2]=X
N140 $TC_CARR22[2]=X
N150 $TC_CARR23[2]="M"
N160 TCOABS CUTMOD=0
N170 G18 T1 D1 TCARR=2
N180 X0 Y0 Z0 F10000
N190 $TC_CARR13[2]=30
N200 TCARR=2
N210 X0 Y0 Z0
N220 G42 Z–10
N230 Z–20
N240 X10
N250 G40 X20 Z0
N260 CUTMOD=2 X0 Y0 Z0
N270 G42 Z–10
N280 Z–20
N290 X10
N300 G40 X20 Z0
N310 M30
The numerical values in the comments specify the end of block positions in the machine coordinates
(MCS) in the sequence X → Y → Z.
Explanations
In block N180, initially the tool is selected for CUTMOD=0 and non-rotated tool holders that can
be orientated. As all offset vectors of the tool holder that can be orientated are 0, the position
that corresponds to the tool lengths specified in $TC_DP3[1,1] and $TC_DP4[1,1] is
approached.
The tool holder that can be orientated with a rotation of 30° around the B axis is activated in
block N200. As the cutting edge position is not modified due to CUTMOD=0, the old cutting edge
reference point is decisive just as before. This is the reason why in block N210 the position is
approached, which keeps the old tool nose reference point at the zero (i.e. the vector (1, 12) is
rotated through 30° in the Z/X plane).
Tools
Function Manual, 06/2019, A5E47435126B AA
2.9 Modification of the offset data for rotatable tools
Comment
; Clearance angle
; B axis
; C axis
; X
; 12.000
; 10.892
; 8.696
; 8.696
; 12.696
; 30.892
; 8.696
; 8.696
; 8.696
; 12.696
; 28.696
W1: Tool offset
Y Z
0.000 1.000
0.000 -5.134
0.000 –17.330
0.000 –21.330
0.000 –21.330
0.000 –5.134
0.000 –7.330
0.000 –17.330
0.000 –21.330
0.000 –21.330
0.000 –7.330
167