Discussion Groups

*Caldwell, Larry

# Constraining O-Rings and such

69 Views, 3 Replies
12-08-2002 11:14 PM
Was just making another O-Ring and remembered
I never got around to posting on this topic. From the answers
I've read on constraining O-Rings and such, I noticed I haven't seen my
technique mentioned (not to say it wasn't, but I didn't see it). What I do is
extrude a surface on the ID in both directions that equals the o_ring diameter.
Then I usually place an iMate so I don't have to turn the surface back on to
constrain it with a single insert constraint.

~Larry
Please use plain text.
*Vlaming, Cor J. de

# Re: Constraining O-Rings and such

12-08-2002 11:29 PM in reply to: *Caldwell, Larry
The best way to constrain a o-ring is to construct
the o-ring on the origin center (project geometry- origin
centerpoint)

then you can use all plane and axis to constrain
for example you can now use the z-axes to mate-constrain with the tube and the x
or y plane with a plain of the tube + 1/2 cord-diameter

greetings Cor

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

Was just making another O-Ring and remembered
I never got around to posting on this topic. From the answers
I've read on constraining O-Rings and such, I noticed I haven't seen my
technique mentioned (not to say it wasn't, but I didn't see it). What I do is
extrude a surface on the ID in both directions that equals the o_ring
diameter. Then I usually place an iMate so I don't have to turn the surface
back on to constrain it with a single insert constraint.

~Larry
Please use plain text.
*Caldwell, Larry

# Re:

12-09-2002 12:21 AM in reply to: *Caldwell, Larry
Yeah ... but, then again, you have to turn
'em (the planes/axis') on/off in the assy to constrain 'em. With the surface
(project the ID/Extrude to length) you can place any kind of iMate you want and
plop it in without even going to the browser. Not saying any way is better than
the other, just saying how I do it. Never know who might get some use out
of it.

~Larry

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

The best way to constrain a o-ring is to
construct the o-ring on the origin center (project geometry- origin
centerpoint)

then you can use all plane and axis to constrain
for example you can now use the z-axes to mate-constrain with the tube and the
x or y plane with a plain of the tube + 1/2 cord-diameter

greetings Cor

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

Was just making another O-Ring and remembered
I never got around to posting on this topic. From the answers
I've read on constraining O-Rings and such, I noticed I haven't seen my
technique mentioned (not to say it wasn't, but I didn't see it). What I do
is extrude a surface on the ID in both directions that equals the o_ring
diameter. Then I usually place an iMate so I don't have to turn the surface
back on to constrain it with a single insert constraint.

size=2>~Larry
Please use plain text.
*Dotson, Sean

# Re:

12-09-2002 12:25 AM in reply to: *Caldwell, Larry
You don't have to turn them on.  Just select
them in the browser...

--
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">http://www.sdotson.com/faq.html

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

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

Yeah ... but, then again, you have to turn
'em (the planes/axis') on/off in the assy to constrain 'em. With the surface
(project the ID/Extrude to length) you can place any kind of iMate you want
and plop it in without even going to the browser. Not saying any way is better
than the other, just saying how I do it. Never know who might get some
use out of it.

~Larry

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

The best way to constrain a o-ring is to
construct the o-ring on the origin center (project geometry- origin
centerpoint)

then you can use all plane and axis to
constrain for example you can now use the z-axes to mate-constrain with the
tube and the x or y plane with a plain of the tube + 1/2
cord-diameter

greetings Cor

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

Was just making another O-Ring and
remembered I never got around to posting on this topic.
From the answers I've read on constraining O-Rings and such, I noticed I
haven't seen my technique mentioned (not to say it wasn't, but I didn't
see it). What I do is extrude a surface on the ID in both directions that
equals the o_ring diameter. Then I usually place an iMate so I don't have
to turn the surface back on to constrain it with a single insert
constraint.

size=2>~Larry
Please use plain text.