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Siemens SINUMERIK 840D sl Function Manual page 1524

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W1: Tool offset
18.12 Working with tool environments
Any rotations and component exchanges initiated by the adapter transformation, toolholder
with orientation capability and kinematic transformation, are part of the tool environment. They
are thus always performed, even if the corresponding length component is not supposed to
be included. If this is undesirable, tool environments must be defined, in which the
corresponding transformations are not active. In many cases (i.e. any time a transformation
or toolholder with orientation capability is not used on a machine), the data sets stored for the
tool environments automatically fulfill these conditions, with the result that the user does not
need to make special provision.
MD20360 $MC_TOOL_PARAMETER_DEF_MASK
The two least significant bits of this machine data specify how the wear (bit 0) and tool length
(bit 1) are to be evaluated if a diameter axis is used for turning and grinding tools.
If the bits are set, the associated entry is weighted with the factor 0.5. This weighting is reflected
in the tool length returned by GETTCOR.
Example:
MD20360 $MC_TOOL_PARAMETER_DEF_MASK = 3 (definition of tool parameters).
MD20100 $MC_DIAMETER_AX_DEF="X" (Geometry axis with face axis funtion)
X is diameter axis (standard turning machine configuration):
N30
N40
N50
N60
N70
N80
N90
N100
N110
N120
N130
N140
N150
N160
Kinematic transformation, toolholder with orientation capability
If a toolholder with orientation capability is taken account of during the tool length calculation,
the following vectors are included in that calculation:
Type
M
T
P
1524
$TC_DP1[1.1] =
$TC_DP2[1.1] =
$TC_DP3[1.1] =
$TC_DP4[1,1]=
$TC_DP5[1,1]=
$TC_DP12[1,1]=
$TC_DP13[1,1]=
$TC_DP14[1,1]=
t1 d1 g18
r1 = GETTCOR(_LEN, "GW")
r3 = _LEN[2]
r4 = _LEN[3]
r5 = _LEN[4]
m30
Vectors
l
and l
1
2
l
, l
and l
1
2
3
Tool length is not influenced by the toolholder with orientation capability.
500
2
3.0
; Geometry L1
4.0
5.0
12.0
; Wear L1
13.0
14.0
; 17.0 (= 4.0 + 13.0)
; 7.5 (= 0.5 * 3.0 + 0.5 * 12.0)
; 19.0 (= 5.0 + 14.0)
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions

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