July 2013 8.6 DCM – Dynamic Collision Monitoring 1453
8.6.2 Fixture monitoring with DCM
DCM collision monitoring (software option 40) of the iTNC 530 also protects
fixtures from collisions. Models of fixtures can be inserted into a machine's
kinematics for this.
HEIDENHAIN provides parameterized descriptions of standard fixtures. The
FixtureWizard for PCs, which is available free of charge, enables you to use
these standard fixtures for describing your own fixtures, and to transfer the
description to the iTNC 530.
In the Manual Operation mode, the fixture management function is used to
set up the fixtures in the machine's work envelope. An interactive menu
allows you to use the integrated measuring cycles to measure and
automatically transfer the fixture data, and to define the variable input values,
such as the jaw distance of a vise.
The iTNC provides a test program for checking the defined fixtures. In the
Program Run, Full Sequence mode the iTNC moves to defined test points and
evaluates them. The result is displayed on the screen, or is available as a log
file.
That chapter on collision monitoring describes the fundamentals of collision
monitoring and the creation of collision-monitored objects (CMOs), see "DCM
– monitoring the working space for collisions" on page 1424.
Kinematics descriptions that are used for collision monitoring may contain a
maximum of 100 transformation entries (Trans and MachAxis). However, not
all of the active CMOs must be considered. You only have to add the
transformations of the CMO with the most transformations to the
transformation entries of the actual machine kinematics.
Finally, the fixture model for collision monitoring and the behavior of the
complete collision model must be tested on the machine as usual.
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