Sluggish Mating Process ??

I have a structural assembly made mostly from the structural section of
toolbox. Thee are approx. 150 peices in the project. The rotation and
everything else is fine, but when I mate parts, it can take up to 15 seconds
to actually move into place. I have never had this problen with any other
project. It is the same deal on my home and work computer. I have checked
all settings, drivers, etc. Could it be something with just this particular
project?? Is it because the structural came from Toolbox??? Thanks for any
help JAKE BARRON

 

Not knowing the specifics of your hardware and such, it's hard to make a
call. Sluggist Mate performance usualy happens when you have a lot of
in-context features and references. If you can reduce or delte them, you
should see an increase in speed.

 

Also by using sub assemblies (not flexible ones you can eliminate many of
the mates that have to be figured out every time you add a mate.

Try this select everything in the tree that you have already fully mated.
RMB>Form New Sub-assembly here. Now everything that you aren't working on
is in a temporary sub-assembly you can then continue to add mates and when
you are done you can disolve the temporary sub-assembly to have everything
back on the main level.

Corey

 

How many top level mates do you have?

 

Corey,

This is a great idea. I have never thought about using temporary
sub-assemblies to "speed-up" mating. Slow mating has always been a
pet-peeve of mine in larger assemblies. The more mates you create, the
slower it is to create mates. By putting a bunch of your parts (and their
mates) into a separate temporary sub-assembly, this should act as though
there are much fewer mates in the top level assembly. This should
drastically speed mating up.

Definitely one to remember...

 

On the other hand, one of those things that I can't really put a finger on
is that I think I crash more after creating subs like that. Makes me
nervous to think about introducing more issues.

Another issue is that when you create a sub like that, and haven't put in
all mates with that in mind, some of the stuff goes nuts. Just happened to
me the other day - parts flipped over, around, inside out, etc. Also, any
patterns get left behind.

However, I definitely see the advantage as you point out.

WT

 

sluggish mating... improper heating at your pad?

Respect

 

Here's a possible way to troubleshoot if it acts this sluggish when
you do a ctrl Q:

Suppress all the mates and ctrl Q. If it doesn't take too long than
it's probably a mate or mates. Next, resolve your mates in small
groups and rebuild. If at some point the rebuild time jumps
drastically you can then narrow your problem down to that group and
probably a single mate within that group. At that point either
redefine or replace the offending mate.

I had an assembly that had one mate that would increase the rebuild
time ten-fold. It was a distance mate between a face and point. I
eventually had to figure out a new way to mate it, for some reason a
mate to that point really confused SW.

Just an idea,
Joe

 

You could also analyze your mates with our cadDoc tool
(http://www.dynabits.com/caddoc/index.htm) which will display your assembly
structure as a graph.
Then look for circular mates such as part A mated with B, B mated with C and
C mated with A. Such closed kinematic loops are harder to solve than tree
structure.