MTS 709 Alignment System User Manual
Page 98
709 Alignment System
Alignment Wizard
98
If the alignment wizard and 609 Alignment Fixture adjustments are not
functioning properly, ensure the specimen is installed properly in the grips, such
that the orientation of strain gauge 12 (G12) with respect to the 609 Alignment
Fixture matches the graphics in that alignment wizard. G12 must be positioned as
shown with respect to the 609 adjustments (A0, A90, A180, A270, C0, C90,
C180, C270). See
on page 30 for additional information.
Note
Before preforming the alignment adjustments, the system should be
warmed up to a stable operating temperature. That is, system high
hydraulic pressure should be applied and the alignment specimen
installed in the grips and clamped for at least 30 minutes before
performing the alignment adjustments.
Generally you make the angular adjustments first, then the concentric
adjustments. Also be aware that all adjustments are somewhat interactive; that is,
one adjustment will have some affect on the others. The purpose of the
information in this section is to provide you with guidelines in performing a
system alignment. In practice, system alignment using the 709 Alignment System
is empirical. Once you get a feel of what happens when the various angular and
concentric adjustment screws and loosened/tightened, the adjustment process
will be intuitive.
Note
If the Alignment fixture screws cannot be adjusted, or the feedback is not
responding as indicated, reduce the alignment fixture preload by 50%.
Refer to the Installation section of the Model 609 Alignment Fixture
Product Information manual (MTS part number 015-031-901) for
information on preloading the alignment fixture.
Note
Another possible cause of adjustment problems could be a bent
specimen. In this case, redoing the specimen offsets could fix the
problem. See
on page 83 for additional information.