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Is fully constraint sketch necessary to have a part adaptive?

13 REPLIES 13
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Message 1 of 14
mohandis2
465 Views, 13 Replies

Is fully constraint sketch necessary to have a part adaptive?

I copied a profile from Autocad into my sketch, it was like 143 dimensions needed to fully constraint the sketch, actually I do not need these dimensions as long as the profile is good, when I extrude it and make it adaptive, the adaptive sign shows up, but the extrusion doesn't adapt to fit the new length, Is that due to that missing 143 dimensions?

Thanks.
13 REPLIES 13
Message 2 of 14
Anonymous
in reply to: mohandis2


Could have something to do with it.. 143 dimensions and
constraints? Sounds like an overly complex sketch. If it's a complex purchased
extrusion, then apply fixed constraints to the entire sketch. Not my
recommendation without seeing the sketch, but it might do in a
pinch.


--
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Message 3 of 14
Josh_Petitt
in reply to: mohandis2

quick way to test, apply a fix constraint to all sketch lines. Then the sketch will be fully constrained.
Message 4 of 14
Anonymous
in reply to: mohandis2


My thought would be: the better constrained your
sketch is, the more stable it will be. Depending how you drive your model
through Adaptivity, the less chance you will have of your model reacting in a
unplanned or unwanted way.


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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
quick
way to test, apply a fix constraint to all sketch lines. Then the sketch will
be fully constrained.
Message 5 of 14
mohandis2
in reply to: mohandis2

Well, I did apply fixed constraint to all the profile, it's fully constraint now, but still can not get the adaptivity works.
Message 6 of 14
Anonymous
in reply to: mohandis2


Are you trying to adapt the extrusion LENGTH or the profile
geometry?


--
Dennis Jeffrey, Autodesk Inventor Certified
Expert
Autodesk Manufacturing Implementation Certified
Expert.
Instructor/Author/Sr. App Engr.
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Message 7 of 14
mohandis2
in reply to: mohandis2

the extrusion length.
Message 8 of 14
Anonymous
in reply to: mohandis2


Can you zip and post the part?


--
Dennis Jeffrey, Autodesk Inventor Certified
Expert
Autodesk Manufacturing Implementation Certified
Expert.
Instructor/Author/Sr. App Engr.
AIP 2008 SP2, AIP 2009-SP1
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HP zv5000  AMD64 2GB - Geforce Go 440, Driver: .8185
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Message 9 of 14
mohandis2
in reply to: mohandis2

here you go.
Message 10 of 14
Anonymous
in reply to: mohandis2


You are not on IV2009. What version of IV are you
using?


--
Dennis Jeffrey, Autodesk Inventor Certified
Expert
Autodesk Manufacturing Implementation Certified
Expert.
Instructor/Author/Sr. App Engr.
AIP 2008 SP2, AIP 2009-SP1
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Message 11 of 14
Anonymous
in reply to: mohandis2


Your part is already adaptive to another part because you
created it with projected geometry. You cannot use this part to create an
adaptive extrusion length without first removing all adaptivity to the Part1.
See attached example in IV2008. If you change the Mate offset of Plate3:1, then
the FixedPart1 adapts.

 

BTW, the Sketch1 still requires 145 dimensions of
constraints.


--
Dennis Jeffrey, Autodesk Inventor Certified
Expert
Autodesk Manufacturing Implementation Certified
Expert.
Instructor/Author/Sr. App Engr.
AIP 2008 SP2, AIP 2009-SP1
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HP zv5000  AMD64 2GB - Geforce Go 440, Driver: .8185
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href="http://teknigroup.com">http://teknigroup.com
Message 12 of 14
mohandis2
in reply to: mohandis2

Done, thanks for your help.
Message 13 of 14
pcunningham1
in reply to: mohandis2

Projected geometry? He said he copied from Acad.



The profile and the length can both be adaptive in the same assy. The key is that once a part is made adaptive, no other instance of that part can be adaptive, either in the same assy or any other assy.



-Paul Cunningham
Paul Cunningham
IV2008
Message 14 of 14
Anonymous
in reply to: mohandis2


The other possibility is that he turned on Adaptivity inside
the part AND the sketch. The sketch was totally unconstrained and not anchored,
so I assumed that he projected the sketch from another part, then broke the
reference link. Either way, it would not work.


--
Dennis Jeffrey, Autodesk Inventor Certified
Expert
Autodesk Manufacturing Implementation Certified
Expert.
Instructor/Author/Sr. App Engr.
AIP 2008 SP2, AIP 2009-SP1
PcCillin AV
HP zv5000  AMD64 2GB - Geforce Go 440, Driver: .8185
XP
Pro SP3, Windows XP Silver Theme

href="http://teknigroup.com">http://teknigroup.com

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