Coordinate System Of The Active Machining Operation (Towstd, Towmcs, Towwcs, Towbcs, Towtcs, Towkcs) - Siemens SINUMERIK 840D sl Programming Manual

SD42930 $SC_WEAR_SIGN
Setting data not equal to zero:
Inverts the sign of all wear dimensions. This affects both the tool length and other variables
such as tool radius, rounding radius, etc.
If a positive wear dimension is entered, the tool becomes "shorter" and "thinner", refer to
Chapter "tool offset, special handling", activating changed setting data".
9.3.3 Coordinate system of the active machining operation (TOWSTD, TOWMCS,
TOWWCS, TOWBCS, TOWTCS, TOWKCS)
Function
Depending on the kinematics of the machine or the availability of an orientable toolholder,
the wear values measured in one of these coordinate systems are converted or transformed
to a suitable coordinate system.
Coordinate systems of active machining operation
The following coordinate systems can produce tool length offsets that can be used to
incorporate the tool length component "wear" into an active tool via the corresponding G
code of Group 56.
● Machine coordinate system (MCS)
● Basic coordinate system (BCS)
● Workpiece coordinate system (WCS)
● Tool coordinate system (TCS)
● Tool coordinate system of kinematic transformation (KCS)
Syntax
TOWSTD
TOWMCS
TOWWCS
TOWBCS
TOWTCS
TOWKCS
Meaning
TOWSTD
TOWMCS
TOWWCS
TOWBCS
Job Planning
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
Initial setting value for offsets in tool length wear value
Offsets in tool length in MCS
Offsets in tool length in WCS
Offsets in tool length in BCS
9.3 Special handling of tool offsets
Tool offsets
395