Basically all I did was blow away most of the constraints then...
1. Mate the guide rod axially to the guide block
2. Make and angle constraint between the top of the long part and the top
of the cyl mtg bracket (this will be redundant later)
3. Mate the rod axially to the cylinder
or
4. Insert the rod into the cylinder
--
Sean Dotson, PE
http://www.sdotson.com
Check the Inventor FAQ for most common questions
www.sdotson.com/faq.html
-----------------------------------------------------------------------
"Brian Land" wrote in message
news:62730E3AEF7D9F929341D7FC699EA5F4@in.WebX.maYIadrTaRb...
> come on Sean (-: .... i need to walk back through it myself, because
> obviously i'm constraining things in a way that Inventor doesn't like
> because that cyl-rod thing happens to me all the time... i'm fixing to
open
> yours back up and see if i can see whats different...
>
> "Sean Dotson" wrote in message
> news:2DE9FA1412BA34327E6247D8EF42D395@in.WebX.maYIadrTaRb...
> > I had to delete a lot of constraints and start over. You had a few that
> > were in conflict with each other if you added the insert. As I said
with
> > multiple degree of freedom assys it's more of an art than a science.
> >
> > --
> > Sean Dotson, PE
> > http://www.sdotson.com
> > Check the Inventor FAQ for most common questions
> > www.sdotson.com/faq.html
> > -----------------------------------------------------------------------
> > "Brian Land" wrote in message
> > news:8C69210B9DF02BC4AD691EAEAF6E49DF@in.WebX.maYIadrTaRb...
> > > Sean... what did u do to get it too work?... i tried yours and it
> worked,
> > i
> > > reopened the one i sent which looks identical and mine won't
> constrain...
> > i
> > > know you fixed it but... what did u do...
> > >
> > > "Sean Dotson" wrote in message
> > > news:DC7E6B016E19941635EBC72583E709CA@in.WebX.maYIadrTaRb...
> > > > Look in iCF for a fixed assy. Under the rod there are two
> constraints.
> > > One
> > > > is suppressed. If you want it to stroke manually leave the one
> > > suppressed.
> > > > If you want it to drive via an insert constraint suppress this one
and
> > > > unsuppress the Insert.
> > > >
> > > > With multiple degree of freedom systems (like this one) you can get
> some
> > > odd
> > > > results (parts flipping etc..)
> > > >
> > > > --
> > > > Sean Dotson, PE
> > > > http://www.sdotson.com
> > > > Check the Inventor FAQ for most common questions
> > > > www.sdotson.com/faq.html
> > >
> > -----------------------------------------------------------------------
> > > > "Brian Land" wrote in message
> > > > news:65AAD3728E4CD6A0769061E4733D6AFF@in.WebX.maYIadrTaRb...
> > > > > okay, sorry about that.... something blew up on the pack and go,
> i've
> > > > > reworked the assy and taken the component pattern out... thanks,
> > > > > bl
> > > > > "Brian Land" wrote in message
> > > > > news:7B75B1AC86EAA1D44062DBCDF08FAAF1@in.WebX.maYIadrTaRb...
> > > > > > i've been doing a workaround for awhile now, and i guess today
i'm
> > > > finally
> > > > > > ready to fix it... ha ha... i've got iparts for pneumatic cyls
we
> > use
> > > > > (ipart
> > > > > > for the cylinder and rod)... when i use a rear pivot cyl, cyl
rod,
> > and
> > > a
> > > > > rod
> > > > > > end, i can never get them to fully constrain, no matter what
order
> > or
> > > > diff
> > > > > > types of constraints i use.... ex.. take a simple linear slide,
> > > moving
> > > > > > freely(unconstrained) insert a rear pivot cyl and rod mt the cyl
> by
> > > its
> > > > > > pivot in the rear, constrain the rod inside of the cyl, place a
> > female
> > > > rod
> > > > > > end in the assy, constrain it on the cyl rod. Place a
connection
> > hole
> > > > in
> > > > > > the moving part of the linear slide to connect the rod end to.
> Now
> > > try
> > > > > and
> > > > > > constrain the rod end to that hole... won't do it, i can move
the
> > > slide
> > > > to
> > > > > > exact postion over the rod end, measure angles and everything no
> > > > problems.
> > > > > > The workaraound is that when it is in exact position you can
> > sometimes
> > > > get
> > > > > > the constraint to lock in, but if you stroke the cyl it will
blow
> > up.
> > > > I'm
> > > > > > going to place a sample assy in the cf, i can't find anything
> wrong
> > > with
> > > > > the
> > > > > > parts, i'm thinking that there is some assy constraint flaw in
> > > Inventor
> > > > > that
> > > > > > has slipped thru the cracks and people have been working around
it
> > > > instead
> > > > > > of bringing it to attention... I've been doing this kind of
thing
> > > since
> > > > R1
> > > > > > and i know it has worked before, so i don't know if it started
> > messing
> > > > up
> > > > > in
> > > > > > 5 or when...but i've been wrong before.... can some of you guys
> > when
> > > > you
> > > > > > get a chance take a peek at it...
> > > > > > thanks,
> > > > > >
> > > > > > --
> > > > > > Brian Land
> > > > > > Mechanical Design
> > > > > > Lorik Tool Inc.
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>