Siemens SINUMERIK 808D Function Manual

Function Manual
01/2017
181
19.4
Special handling of tool compensation
Tool compensation (offset) can be handled as follows.
Influence of setting data
Using specific setting data the operator / programmer can influence the calculation of the length compensation of the used
tool:
● SD42940 TOOL_LENGTH_CONST
(allocation of the tool length components to the geometry axes)
● SD42950 TOOL_LENGTH_TYPE
(allocation of the tool length components independent of tool type)
Note
The modified setting data will become effective with the next cutting edge selection.
Tool length and plane change (SD42940 TOOL_LENGTH_CONST)
Value of the setting data equal to 0:
The behavior corresponds to the standard definition: The lengths 1 to 3 in geometry and wear are assigned to the 1st to 3rd
axes of the plane according to the active G17 to G19 and according to the tool type. If the active G17 to G19 changes, the
axis assignment for the lengths 1 to 3 also changes because abscissa, ordinate and application are allocated to different
geometry axes.
Reference:
SINUMERIK 808D/SINUMERIK 808D ADVANCED Programming and Operating Manual
Value of the setting data not equal to 0:
The assignment of the tool lengths 1 to 3 in geometry and wear to the geometry axes are performed according to the SD
value and are
not
changed if the machining plane (G17 to G19) changes.
The assignment of the tool lengths 1 to 3 to the geometry axes for
turning tools
(tool types 500 to 599) results from the value
of the setting data SD42940 in accordance with the following table:
Plane/value
Length 1
Length 2
Length 3
17
Y
X
Z
18*)
X
Z
Y
19
Z
Y
X
-17
X
Y
Z
-18
Z
X
Y
-19
Y
Z
X
*) Each value not equal to 0 which is not equal to one of the six listed values is evaluated as the value for 18.
With respect to the values with a negative sign the assignment of length 3 is identical, length 1 and 2 are exchanged -
compared to the assignment with the corresponding positive values.
The following table shows the assignment of the tool lengths 1 to 3 to the geometry axes for
drills / milling cutters
(tool types
100 to 299):
Plane/value
Length 1
Length 2
Length 3
17*)
Z
Y
X
18
Y
X
Z
19
X
Z
Y
-17
Z
X
Y
-
18
Y
Z
X
-19
X
Y
Z
*) Each value not equal to 0 which is not equal to one of the six listed values is evaluated as the value for 17.
With respect to the values with a negative sign the assignment of length 1 is identical, length 2 and 3 are exchanged -
compared to the assignment with the corresponding positive values.

Siemens SINUMERIK 808D Specifications

General

Brand	Siemens
Model	SINUMERIK 808D
Category	Control Unit
Language	English