offsetting one part in another part

offsetting one part in another part

Post by samura » Wed, 20 Dec 2006 04:58:55


I've got a part that i've designed, now i want it to 'fit' into
another part with an offset in part2. Basically, part2 is to accpet
part1, both are cylindrical. Part1 OD is 2.307" and i would like to
offset the ID in part 2 to 2.314. The length I would like the same.

How can i do this in SW2006? I used Combine, but it makes the exact
same ID as the OD of part1. I would like to offset the ID in part2
larger by about .007".

Thanks!
 
 
 

offsetting one part in another part

Post by MM » Wed, 20 Dec 2006 05:32:15


Generally speaking, you don't want to use this method for mechanical
relationships.

If you want to maintain a specific ratio between the parts, use an equation
in an assembly. In its simplest form, this can be expressed as

"D1@ XXXX@XXXXX.COM "="D1@ XXXX@XXXXX.COM "*1.01

This means that the hole (in the hole.sldprt) will always resolve to 10%
larger than the shaft.sldprt.


Regards

Mark

 
 
 

offsetting one part in another part

Post by samura » Wed, 20 Dec 2006 12:47:14

I was hoping to find a faster way to offset a part that fits into
another part.

The way you suggest means that i have to actually make a sketch to fit
the part. Is there a way to convert a half section view of part1 into
a sketch of part2? I've got a profiled cylinder of part1 in a section
view, how can I get the sectioned view of the profile to a sketch?

Thanks.
 
 
 

offsetting one part in another part

Post by MM » Thu, 21 Dec 2006 02:28:00

Well, you could create an in-context part from the cylinder, but then, I'm
not really sure what your trying to accomplish here. Are you using multibody
parts to represent assemblies?? This is a very bad idea if you are. Product
designs should allways be represented as assemblies. Multibodies should be
used as a construction tool to make single parts. I also use multibodies to
represent purchased parts like valves and motors.

You say you want a faster way to accomplish this, Are you in a race ??? All
software of this type is more productive when used as it was intended. We
have a couple of guys here who take allot of shortcuts. They say it's
faster. Well, it's not. All it does is move the labor downstream to the next
group that has to fix it.

Maybe you could post a picture of what your trying to do.


Mark







equation
 
 
 

offsetting one part in another part

Post by T. Struemk » Thu, 21 Dec 2006 02:54:34

It sounds like you could try creating a surface body from part1 that is
offset the desired distance. You will probably have to cap the end(s)
of the offset surface prior to creating a "insert, cut, with surface"
feature.

Tim
 
 
 

offsetting one part in another part

Post by matt » Thu, 21 Dec 2006 03:21:09

This sounds like the Indent feature to me. Check it out in the help.
 
 
 

offsetting one part in another part

Post by samura » Thu, 21 Dec 2006 05:19:50

Thanks Matt,
Indent is a neat feature, it worked for what I want to do.
It presented new problems, part1 has an o-ring groove, and when using
Indent, on part2, it put the groove on part2, which I cut away with a
cut/revolve. But when changing the OD of part1, the cut revolve was
not associated unless I used an equation.

Neat feature, should come in handy with a bit more experimenting.

samurai.