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Drive Constraints: Multiples of same sub-assembly

4 REPLIES 4
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Message 1 of 5
pkarolyi
251 Views, 4 Replies

Drive Constraints: Multiples of same sub-assembly

Please help!!
I have an assembly containing two instances of the same sub-assembly. (The sub-assembly is a cylinder with a 42 inch stroke). The drive contraints needed are the same for both cylinders.
After successfully constraining the first "instance" of the cylider in the main assembly and setting the drive constraints for the cylinder, both cylinders are actuated at the same time with the same stroke. (Which is great-the drive constraints work like intended). However, after constraining the second instance of the cylinder in the main assembly, the drive constraint for the first cylinder are no longer solved, and are not solved for the second cylinder either.
Anyone have any idea how to accomplish this or know of any pit falls I should look for?
4 REPLIES 4
Message 2 of 5
Anonymous
in reply to: pkarolyi

If you have 2 copies of the same sub in the assy
then you can only drive one of them.  The same sub cannot act in
different manners in the same project.  You will need to make a copy of the
sub and place it as a separate occurrence in the main assy.


--
Sean Dotson, PE

href="http://www.sdotson.com">http://www.sdotson.com

Check the Inventor
FAQ for most common questions

href="http://www.sdotson.com/faq.html">www.sdotson.com/faq.html

-----------------------------------------------------------------------


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Please
help!!
I have an assembly containing two instances of the same
sub-assembly. (The sub-assembly is a cylinder with a 42 inch stroke). The
drive contraints needed are the same for both cylinders.
After
successfully constraining the first "instance" of the cylider in the main
assembly and setting the drive constraints for the cylinder, both cylinders
are actuated at the same time with the same stroke. (Which is great-the drive
constraints work like intended). However, after constraining the second
instance of the cylinder in the main assembly, the drive constraint for the
first cylinder are no longer solved, and are not solved for the second
cylinder either.
Anyone have any idea how to accomplish this or know of
any pit falls I should look for?
Message 3 of 5
pkarolyi
in reply to: pkarolyi

Thanks for the information, I do appreciate it!

I am using to copies of the same sub-assembly, but I want them to act in the same manner, just offset from ach other (mirroed if you will). I noticed that as one copy is driven, the other moves with the same (percieved) drive constraints. Is this a glitch, or can they really act in the same mannor? (Or have I really missed the point)?!
Message 4 of 5
Anonymous
in reply to: pkarolyi

Since they are the same Assembly if you move a part in one it has to move in the other.

--
Kent
Assistant Moderator
Autodesk Discussion Forum Moderator Program


"pkarolyi" wrote in message news:f189a8e.1@WebX.maYIadrTaRb...
> Thanks for the information, I do appreciate it!
> I am using to copies of the same sub-assembly, but I want them to act in the same
manner, just offset from ach other (mirroed if you will). I noticed that as one copy is
driven, the other moves with the same (percieved) drive constraints. Is this a glitch, or
can they really act in the same mannor? (Or have I really missed the point)?!
>
Message 5 of 5
Anonymous
in reply to: pkarolyi

Another thing you can try is to promote the
subassemblies to the main assembly and redo the constraints for each
there.  If the subassemblies aren't too complicated and you don't mind the
BOM being messed up, then this my be a good way to go.

 

Pat


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">

If you have 2 copies of the same sub in the assy
then you can only drive one of them.  The same sub cannot act in
different manners in the same project.  You will need to make a copy of
the sub and place it as a separate occurrence in the main assy.


--
Sean Dotson, PE

href="http://www.sdotson.com">http://www.sdotson.com

Check the Inventor
FAQ for most common questions

href="http://www.sdotson.com/faq.html">www.sdotson.com/faq.html

-----------------------------------------------------------------------


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
Please
help!!
I have an assembly containing two instances of the same
sub-assembly. (The sub-assembly is a cylinder with a 42 inch stroke). The
drive contraints needed are the same for both cylinders.
After
successfully constraining the first "instance" of the cylider in the main
assembly and setting the drive constraints for the cylinder, both cylinders
are actuated at the same time with the same stroke. (Which is great-the
drive constraints work like intended). However, after constraining the
second instance of the cylinder in the main assembly, the drive constraint
for the first cylinder are no longer solved, and are not solved for the
second cylinder either.
Anyone have any idea how to accomplish this or
know of any pit falls I should look for?

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