Siemens SINUMERIK 840Di Function Manual page 1847

Setting data:
SD42930 $SC_WEAR_SIGN
is enabled in N90, i.e., the wear must be evaluated with a negative sign.
The compensation is vectorial (_CORCOMP = 1), and the compensation vector must be
added to the wear (_CORMODE = 1). The geometric conditions in the Z/X plane are shown
in the figure below:
Fig. 4-2
The geometry component of the tool remains unchanged due to _CORMODE = 1. The
compensation vector defined in the WCS (rotation about y axis) must be included in the wear
component such that the total tool length in the figure refers to point P
resulting wear component of the tool is given in relation to the distance between points
P and P
1
However, since the wear is evaluated negatively, due to setting data SD42930, the
compensation determined in this way has to be entered in the compensation memory with a
negative sign. The contents of the relevant tool parameters at the end of the program are
thus:
$TC_DP3[1,1]
$TC_DP4[1,1]
$TC_DP5[1,1]
$TC_DP12[1,1]
$TC_DP13[1,1]
$TC_DP14[1,1]
The effect of setting data SD42930 on the L3 component in the Y direction can be
recognized without the additional complication caused by the frame rotation.
Tool Compensation (W1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Tool length compensation, example 8
.
2
: 10.000
: 15.000
: 10.000
: 2.010
: -16.160
: -5.000
4.2 Examples 3–6: SETTCOR function for tool environments
; Geometry L1 (unchanged)
; Geometry L2 (unchanged)
; Geometry L3 (unchanged)
; Wear L1
;(= 10 -15*cos(30) + 10*sin(30))
; Wear L2
;(= -15*sin(30) - 10*cos(30))
; Wear L3
Examples
. Therefore, the
2
4-13