12.5 Working with two tool holders
It is possible to work on a single turning machine with two tool holders, both of which are
mounted on an X axis. The tool holders may be revolvers, multifix, or a combination of both.
As both tool adapters are mounted on the same axis it is only possible to machine with one
tool. The workpiece is located between the two tool adapters.
All tools have the same reference point (on tool holder 1) irrespective of which tool holder they
are on. Consequently, the tool lengths of the second tool holder are always longer than the
tool lengths of the first tool holder. The main machining is performed in the negative X axis
direction.
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Tool holder definition
The MD52248 REV_2_BORDER_TOOL_LENGTH defines a tool length limit X so that the tools
can be assigned to the two tool holders automatically:
Tool length X < MD52248: Tool belongs to the 1st tool holder
Tool length X ≥ MD52248: Tool belongs to the 2nd tool holder
Additional parameter assignments
For the used mirrorings of the X and Y axes and the offsets of the C axis, the following machine
data has to be configured:
MD24006 $MC_CHSFRAME_RESET_MASK Active system frames after RESET
Bit 4 = 1 System frame for workpiece reference remains active after RESET
Tool management
12.5 Working with two tool holders
SINUMERIK Operate (IM9)
242 Commissioning Manual, 12/2017, 6FC5397-1DP40-6BA1
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