Assignment Of Tool Length Components To Geometry Axes; Assignment According To Tool Type And Working Plane; Assignment When Changing Plane - Siemens SINUMERIK 840D sl Function Manual
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2.11
Assignment of tool length components to geometry axes
2.11.1
Assignment according to tool type and working plane.
The values of the tool parameters length 1 ... 3 are stored in the system variables
$TC_DP3 ... $TC_DP5 (see Chapter "Tool parameters (Page 36)"). The assignment to the
geometry axes and therefore the resultant cutting direction of the tool length components
depends on the tool type ($TC_DP1) and the active machining plane (G17/G18/G19).
Table 2-1
Working plane
G17 (X/Y)
G18 (Z/X)
G19 (Y/Z)
Table 2-2
Working plane
G17 (X/Y)
G18 (Z/X)
G19 (Y/Z)
2.11.2
Assignment when changing plane
The assignment of tool length components (length, wear, and tool base dimension) to the
geometry axes does not change when the machining plane is changed if the following setting
data is set to not equal to zero:
SD42940 $SC_TOOL_LENGTH_CONST <> 0
The assignment of the tool length components to the geometry axes is then derived from the
ones and tens position of the setting data as shown in the following tables
Table 2-3
Tools
Function Manual, 06/2019, A5E47435126B AA
Turning/grinding tools ($TC_DP1 = 400 ... 599)
Milling tools / special tools ($TC_DP1 <> 400 ... 599)
Turning / grinding tools ($TC_DP1 = 400 ... 599)
SD42940
Length L1
= x17
= x18
= x19
= -x17
= -x18
= -x19
2.11 Assignment of tool length components to geometry axes
Length 1
Y
X
Z
Length 1
Z
Y
X
Assignment of tool length components to geometry axes
Length L2
Y
X
Z
X
Z
Y
Length 2
X
Z
Y
Length 2
Y
X
Z
Length L3
X
Z
Y
Y
X
Z
W1: Tool offset
Length 3
Z
Y
X
Length 3
X
Z
Y
Z
Y
X
Z
Y
X
171
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