Bent Spring?

[WilliamT]

I know it's a long shot but can anyone think of a way to create a spring to go round a 90 degree bend in a tube. I know it's a big ask and I don't expect to be able to do it but I just thought I'd float it up here to see if anyone has any ideas.

Cheers
WT

[Anonymous]

Yes it can be done if you just want a visual model, search "slinky" there
have been some other examples posted, can't think of the top of my head just
now.
If you are looking for an ultimate accurate solution life like and
technically correct probably not, but my guess is that you want a visual.

--
Laurence,

Power is nothing without Control
---


"WilliamT" wrote in message
news:f197e50.-1@WebX.maYIadrTaRb...
> I know it's a long shot but can anyone think of a way to create a spring
to go round a 90 degree bend in a tube. I know it's a big ask and I don't
expect to be able to do it but I just thought I'd float it up here to see if
anyone has any ideas.
> Cheers
> WT
>

[Anonymous]

You can make a partial revolution of the coil then use a circular pattern to
go around the tube.

--
Sean Dotson, PE
http://www.sdotson.com
Check the Inventor FAQ for most common questions
www.sdotson.com/faq.html
-----------------------------------------------------------------------
"Laurence Yeandle" wrote
in message news:6C9CBA9DCF15F846EF9DE9AB6A57444C@in.WebX.maYIadrTaRb...
> Yes it can be done if you just want a visual model, search "slinky" there
> have been some other examples posted, can't think of the top of my head
just
> now.
> If you are looking for an ultimate accurate solution life like and
> technically correct probably not, but my guess is that you want a visual.
>
> --
> Laurence,
>
> Power is nothing without Control
> ---
>
>
> "WilliamT" wrote in message
> news:f197e50.-1@WebX.maYIadrTaRb...
> > I know it's a long shot but can anyone think of a way to create a spring
> to go round a 90 degree bend in a tube. I know it's a big ask and I don't
> expect to be able to do it but I just thought I'd float it up here to see
if
> anyone has any ideas.
> > Cheers
> > WT
> >
>
>

[Anonymous]

I put an example of how I do it in iCF.
~Larry

"WilliamT" wrote in message
news:f197e50.-1@WebX.maYIadrTaRb...
> I know it's a long shot but can anyone think of a way to create a spring
to go round a 90 degree bend in a tube. I know it's a big ask and I don't
expect to be able to do it but I just thought I'd float it up here to see if
anyone has any ideas.
> Cheers
> WT
>

[xavierl]

you can do it in mdt. and then import the solid

sweep a circle along the tube centreline and then draw a 3d spline using the quadrants of the circles as snap points. you will need 4 circle loops per spring revolution.
you then sweep a circle along the spline. import into iv.

the other method of sweeping a half circle in iv is not geometrically correct but ok if its only for a visual effect.

regards, frans x liebenberg.

[WilliamT]

Thanks guys, looks great. Yeah you're right Laurence - all I need is a representation. That'll teach me to be so negative.

Thanks

[Anonymous]

I'm not sure exactly what you mean by "geometrically correct". We're talking
about a piece of wire that gets wrapped around a post then gets chucked in a
bucket with a bunch of other springs. FAIK, the half-circle method, being
fully adjustable, should be able to produce theoretically correct geometry
if someone figured they needed that for some reason. Don't think anyone can
make springs that are actually geometrically correct anyway ... you?
~Larry

"fxlxd" wrote in message
news:f197e50.3@WebX.maYIadrTaRb...
> you can do it in mdt. and then import the solid
> sweep a circle along the tube centreline and then draw a 3d spline using
the quadrants of the circles as snap points. you will need 4 circle loops
per spring revolution.
> you then sweep a circle along the spline. import into iv.
> the other method of sweeping a half circle in iv is not geometrically
correct but ok if its only for a visual effect.
> regards, frans x liebenberg.

[Anonymous]

>Don't think anyone can
> make springs that are actually geometrically correct anyway ... you?<

Nope, not by any "stretch" of the imagination can I see that
happening.........in fact, there is no one with enough "pull" to make it
happen.

Catch you guys on the "rebound"

[Anonymous]

Ah shucks ... I thought if anyone had enough pull to push that envelope it
would be you!
~Larry

"Albert Allen" wrote in message
news:1E473973F6028EDCAF60243F4FB176F0@in.WebX.maYIadrTaRb...
>
> >Don't think anyone can
> > make springs that are actually geometrically correct anyway ... you?<
>
> Nope, not by any "stretch" of the imagination can I see that
> happening.........in fact, there is no one with enough "pull" to make it
> happen.
>
> Catch you guys on the "rebound"
>
>

[xavierl]

I'm not sure exactly what you mean by "geometrically correct".

a spring is a rod bent into a spiral. the half circles making up the bent spring in ivcf are flat and not spiralled. plus this method is like taking a spring, cutting it , rotating it and glueing it back.

try bending a real spring and compare the shape to the example in ivcf.

regards, frans x liebenberg.

[Anonymous]

The method you are describing in mdt is possible in IV but cause you sweep
you need rads which at best end up as quadrants of a complete circular wire,
which are twisted at there join to give the effect of a spring going round a
bend ala tube bending spring?
I believe mdt has a superior method to give a correct path if not the path
and form of wire as well.
I am sure it has been mentioned at least twice in the past.

--
Laurence,

Power is nothing without Control
---


"fxlxd" wrote in message
news:f197e50.3@WebX.maYIadrTaRb...
> you can do it in mdt. and then import the solid
> sweep a circle along the tube centreline and then draw a 3d spline using
the quadrants of the circles as snap points. you will need 4 circle loops
per spring revolution.
> you then sweep a circle along the spline. import into iv.
> the other method of sweeping a half circle in iv is not geometrically
correct but ok if its only for a visual effect.
> regards, frans x liebenberg.

[Anonymous]

Well ... it's hard to get a good measurement on a real spring but I doubt
any manufactured springs would conform to any kind of perfection. Unless you
were trying to design springs to manufacture, they're all nothing but
representations of purchased parts. I have even used that method for
designing a special purpose spring that we had made and the manufacturer
seemed to think it was fine and the spring worked as planned, so I must
still be missing something.
~Larry

"fxlxd" wrote in message
news:f197e50.8@WebX.maYIadrTaRb...
> I'm not sure exactly what you mean by "geometrically correct".
> a spring is a rod bent into a spiral. the half circles making up the bent
spring in ivcf are flat and not spiralled. plus this method is like taking a
spring, cutting it , rotating it and glueing it back.
> try bending a real spring and compare the shape to the example in ivcf.
> regards, frans x liebenberg.