cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Showing results for 
Search instead for 
Did you mean: 

Summary: Accuracy help

Highlighted
Newbie

Summary: Accuracy help

According to Pro/Help:

In general, you should set the accuracy to a value less than the
ratio of the length of the smallest edge on the part to the length
of the largest side of a box that would contain the part.

So I was close.. it's relative to the SIDE of a box containing your
part, not the diagonal. Of course, this is only helpful if you know how
small the smallest edge will be in advance of your starting a part...
not very likely!

The most helpful response: (thanks to Jeff Walker)

If you simply want to maintain your current accuracy, yet switch
from relative to absolute, all you need to do is choose "Select
Model" instead of "Enter Value". Then, simply choose the same model
you are changing.

Other responses:

I'd recommend something around 10% of your tightest tolerance. We use
.0005 in for typical tolerances of ± .005 in. The tighter you make
this the larger the model files and regen times so you may want to
experiment a bit.

And something to consider for the future of your parts (good thing to know):

You are touching on something that is a huge problem for us out here
trying to use the software for mold design.

Pro-mold (which turns into a child feature of the original part CAD)
requires absolute accuracy, to create mold splits and down stream
vent cuts etc, with-out a bunch of Pro-E software failures, and
crashes.

Most people/companies (not knowing any better) design their parts,
in the relative accuracy, that Pro-E automatically defaults to.
Which can be a disaster down stream in Pro-Manufacture, Pro-Mold,
Pro-Dieface, etc.

This is a issue I have been trying to get PTC to do something about
for years, with no avail.


Thanks to all for the responses.

Jeff

--
Jeff Sampson Engineering
-
http://home.earthlink.net/~jeffsampson/
-----

Original post:
2 REPLIES 2
Highlighted

RE: Summary: Accuracy help

I can't even change the models I create. It defaults to relative accuracy. When I try changing it in setup I don't get the popup window that used to ask if you want relative or absolute accuracy. Has this option been disabled in WF2.0 M110 ?

Robert
Highlighted

RE: Summary: Accuracy help




You need to turn it on in your config.pro using "enable_absolute_accuracy"Â set to
"yes"
--
Jeff Walker
Atrus, Incorporated
ATRUS.net
330.284.8831

I can't even change the models I create. It defaults to relative accuracy. When I try changing it in
setup I don't get the popup window that used to ask if you want relative or absolute accuracy. Has this option been
disabled in WF2.0 M110 ? Robert
Announcements
Message from Brian Thompson (PTC General Manager and DVP) regarding Creo Business Continuity plans.