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How do you set up a hierarchial order to constraints?

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Message 1 of 2
tuiengr
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How do you set up a hierarchial order to constraints?

When using 3D constraints in MDT4, how do you set a specific anchoring point for all the constraints. When adding constraints, PART A moves toward PART B. However, I would like to have PART A as my 'base' or 'reference' and have PART B move toward PART A. This tends to happen with all types of constraints, but the ANGLE constraint seems to give the most problems. I can start an assembly oriented to the WCS. I can insert a STEP part and it can be oriented at some random angle to the WCS. When I constain the inserted part to the original assembly, the original assembly will move and orient itself to the inserted STEP part. At that point I have an assembly as some random orientation relative to the WCS. I have used the ALIGN command to get things back to a somewhat square orientation, but everything shifts if additional constraints are added.
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Inventor 2013 Professional SP1
Windows 7 Profession, 64-bit SP1
Intel Core i5 CPU, 8GB RAM
NVIDIA Quadro 600, 4800 MB
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Message 2 of 2
Anonymous
in reply to: tuiengr


First part listed in the browser is "grounded" and "shouldn't"
move


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
When
using 3D constraints in MDT4, how do you set a specific anchoring point for
all the constraints. When adding constraints, PART A moves toward PART B.
However, I would like to have PART A as my 'base' or 'reference' and have PART
B move toward PART A. This tends to happen with all types of constraints, but
the ANGLE constraint seems to give the most problems. I can start an assembly
oriented to the WCS. I can insert a STEP part and it can be oriented at some
random angle to the WCS. When I constain the inserted part to the original
assembly, the original assembly will move and orient itself to the inserted
STEP part. At that point I have an assembly as some random orientation
relative to the WCS. I have used the ALIGN command to get things back to a
somewhat square orientation, but everything shifts if additional constraints
are added.

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