Assembly Sketch Relation problem...

Hi All. I am using most current version SW(2007 SP4). Here is my
trouble:

I am designing a mold base. I need to add EJ holes to the EJ plate.
The inserts are all in place in the Assy, along with current EJ
locations.

When I edit the part (in Assy window) I can use Convert entities to
get my hole locations, but I cant get it to go Concentric with the
Insert block. (it wont put the concentric relation in to the current
EJ holes in the Insert blocks). I dont get it, this worked for me
before. IF there a bug I dont know about??..

I need this to update the locations automatically if I change the
insert blocks(Shrink may change).

Any input is appreciated

 

In order to get good help, you have to be more careful about how you say
things. I can't decipher what you're saying at all.

possibilities based on guesses:

- the things that you are trying to make something else concentric to
aren't circular. concentric sketch relation or concentric mate? edge or
face? I'll let you figure out how to figure out if something is circular
or not

- if you have already converted a sketch entity, you don't need to make
it concentric (unless you have the switch turned on that deletes the
relations as soon as you make them)

- if you have created a part using a convert entity, you don't need to
mate that part. That over defines everything.

- of course you're aware of the difference between an assembly sketch
and a sketch in a part being edited in the context of an assembly

Daisy

 

Yeah, Im trying to explain it so it makes sense,lol..here goes:

Simple holes here. I have an assembly with inserts in it. The inserts
have holes. I need to project the holes down to another part (EJ
Plate) in the assembly. I am editing the EJ plate in context in the
asembly. I can use Derived sketches or can also use Convert entities.

The problem is, the sketch is not fully defined, I can drag it and
move it out of position. I try to add a Concentric relation, in
context to the holes in the upper part of the assy, and its a no go.
It will snap to the center if dragged, but dont add the relation. I
also cannot manuall add any relations either.

 

Ok, I just talked with SW. I had the No external Refrences checkbox in
the Assemblys Toolbar checked. Man thats so not obvious,lol... Sorry
for the stupid question.. thanks for the help..

CD

 

Ok, there is a function on your Assembly toolbar called "No External
Relations". This is probably pressed in, and you need to un-press it. It
looks like a yellow upside down T block with a blue cube with a chain
link with a red X. You can also get to this setting in Tools Options
External References => Do not create references external to the model.

Daisy

 

Just a tip from my experience. Don't convert entities in context in
an assembly if you can help it. It can get confusing and is buggy. A
better idea, IMHO, is to create a sketch in the assembly (better yet,
a separate component containing only the sketch) with the EJ pin
locations. Use this to position the holes in all the plates and
inserts. Easy to change, and I've not had nearly the problems.

 

Thanks FlowerPot and Ed.. I dont do many assemblies latley, so it
is good to have freindly help.. Beer is on me..

 

Damn, I just re-read my post. You'd think english wasn't my native
tongue. Not had nearly the problems? Ick.

 

I agree with Ed on this. I use this method all the time and really
simplifies the top-down assembly approach, especially with really
large assemblies that have a lot of inter-part relations. Use a sketch
that drives the interactions between parts.