1454 HEIDENHAIN Technical Manual iTNC 530 HSCI
Using DCM to protect fixtures from collisions requires essentially three steps:
1. Modeling fixtures with KinematicsDesign
HEIDENHAIN makes fixture templates such as vises or jaw chucks, which
were created with the PC program KinematicsDesign, available to you via
the programming station version of the control. You can create additional
fixture templates and provide them to your end users. The fixture templates
have the file name extension *.cft.
2. Defining fixtures with FixtureWizard
With the FixtureWizard, the machine operator defines the exact dimensions
of the fixture by entering parameter values in the fixture template. The
FixtureWizard is available as a stand-alone PC tool and as a component of
the iTNC fixture management feature. It generates an insertable fixture with
concrete dimensions defined by you. Insertable fixtures have the file name
extension *.cfx.
For information on operating the FixtureWizard, refer to Chapter 11.3 –
"Fixture Monitoring" of the User's Manual for the iTNC 530.
3. Inserting the fixtures in the kinematics model on the iTNC 530 and
testing them
In an interactive menu whose texts you create in KinematicsDesign, the
TNC guides the user through the actual probing process. The probing
process consists essentially of the performance of various probing functions
on the fixture and entering variable quantities, such as the jaw gap of a vise.
After you have inserted the fixture, you can have the TNC create a
measuring program as needed with which you can have the actual position
of the inserted fixture compared with the nominal position. If the deviations
between the nominal and actual positions are too large, the TNC issues an
error message.
The most important functions are described below by using a simple example
fixture. Use the fixture templates from HEIDENHAIN as examples if you want
to create more complex fixture templates. However, be sure not to change
the original HEIDENHAIN templates.
Prerequisites The software option 40 (DCM - Dynamic Collision Monitoring) must be
enabled.
Your machine must have a 3-D touch probe for workpiece measurement.
Otherwise you cannot place the fixture on the machine.
FIXTURE.FUNCTION = YES must be entered in the OEM.SYS.
Permissible insertion points for the fixtures must be defined in the
kinematics description , see page 1456.
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