Detailed Description
2.8 Special handling of tool compensations
Basic logic functions: Tool Offset (W1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
139
2.8.6
Temperature offsets in tool direction (SD42960 $SC_TOOL_TEMP_COMP)
Note
Temperature offset in the tool direction is operative only as an option with generic 5axis
transformation, types 24 and 56.
2.8.7
Tool lengths in the WCS, allowing for the orientation
Change tool or working plane
The values displayed for the tool correspond to the expansion in the WCS. If a toolholder
with an inclined clamping position is to be used, you should make sure that the
transformation used supports the toolholder. If this is not the case, incorrect tool dimensions
will be displayed. When changing the working plane from
G17
to
G18
or
G19
, you should
ensure that the transformation can also be used for these working planes. If the
transformation is only available for
G17
machining, the dimensions continue to be displayed
for a tool in the Z direction after the plane change.
When transformation is deactivated, the basic tool is displayed in the x, y or z direction,
according to the working plane. Allowance is made for a programmed toolholder. These tool
dimensions are not altered when traversing without a transformation.
2.8.8
Tool length offsets in tool direction
Temperature compensation in real time
On 5axis machines with a moving tool, temperature fluctuations can occur in the machining
heads. These can result directly in expansion fluctuations, which are transmitted to the tool
spindle in the form of linear expansion. A typical case on 5axis heads, for example, is
thermal expansion in the direction of the longitudinal spindle axis.
It is possible to compensate this thermal expansion even when the tool is orientated by
assigning the temperature compensation values to the tool rather than to the machine axes.
In this way, linear expansion fluctuations can be compensated even when the tool orientation
changes.
Using the orientation transformation whose direction is determined by the current tool
orientation, it is possible to overlay motions in real time and rotate them simultaneously. At
the same time, the compensation values are adjusted continuously in the tool coordinate
system.
Compensation applies to the "Temperature compensation" option and is active only when
the axis to be compensated is really referenced.
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 ...