Detailed Description
2.9 Sum offsets and setup offsets
Basic logic functions: Tool Offset (W1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
145
2.9
Sum offsets and setup offsets
2.9.1
General
Sum offsets
Sum offsets can be treated as programmable process compensations during machining and
are composed of all the error sizes (including the wear), which cause the workpiece to
deviate from the specified dimensions.
Sum offsets are a generalized type of wear. They are part of the cutting edge data. The
parameters of the sum offset refer to the geometrical data of a cutting edge.
The compensation data of a sum offset are addressed by a DL number (DL: location-
dependent; compensations with reference to the location of use).
In contrast, the wear values of a D number describe the physical wear of the cutting edge,
i.e., in special situations, the sum offset can match the wear of the cutting edge.
Sum offsets are intended for general use, i.e., with active or inactive tool management or
with the flat D number function.
Machine data are used to classify the sum offsets into:
•
Sum offset fine
•
Sum offset coarse (setup offset)
Setup offset
The setup offset is the compensation to be entered by the setup engineer before machining.
These values are stored separately in the NCK. The operator subsequently only has access
to the "sum offset fine" via HMI.
The "sum offset fine" and "sum offset coarse" are added internally in the NCK. This value is
referred to below as the sum offset.
Note
The function is enabled via the machine data setting:
MD18080 $MN_MM_TOOL_MANAGEMENT_MASK, Bit 8=1 (Gradual memory reservation
for tool management).
If kinematic transformations (e.g., 5axis transformations) are active, the tool length is
calculated first after allowing for the various wear components. ´The total tool length is then
used in the transformation. Unlike the case of a toolholder with orientation capability, the
wear values are thus always included in the transformation irrespective of the G code of
group 56.
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
