flexible option with @#~¦¦¦ STEP assembly file

[chedalb]

dear all,

I am stupidly stuck into something that most likely is a stupid thing, but I can not get out of the thing.

Dear all,

I am assemblying an XYZ stage and have to check for different envelope aspects.
So, I import the STEP from the linear stage manufacturer, and I assemble the very same stage along X, Y and Z.
I reassemble the moving stage with respect to the fixed part so that I can vary the position of the moving part by imposing a distance.

Then I tried to create a flexible assembly, by taking the distance quote.
So, first thing I do not understand, I can not grab an assembly quote as a flexible option. And I get "aaargh!!!".

So I think I am smart, I create a parameter "position" and then I generate a relation between the parameter "position" and the assembly distance quote. I think: when I have the flexible part, I just update the local parameter..
So, apparently not, I can make the bloody part flexible by means of the parameter, but only once. To change the position of the stage, I have to remove the flexibility and reimpose the flexibility on the same parameter and re-introduce a new value.. this is not an impossible procedure but is somehow really stupid..

What the @#~µ²³ am I doing wrong?
I provide you the stage, in case you have an idea...

thanks for any suggestion!
chedalb

 

[3DDave]

In using Parametric Flexibility at the assembly level, the only items that respond to flexibility are those that can be affected by making those same changes in the part or sub-assembly model. Flexibility is more like on-demand family table than it is change anything no matter what.

With flexibility you can change existing dimensions, resume or suppress components or features, parameters, and so on, and Creo creates an on-the-fly variations.

I haven't heard the term 'assembly distance quote' What are the steps to create one?

 

[chedalb]

Hello 3DDave:

assembly distance quote:
when one assembles a component, has different options. Coincident,parallel or distance or whatever.
"assembly distance quote" for me is the quote that I create during the process of a "distance" placement in the assembly.

I can assign a relation to this quote, I can change it in Edit definition. Etc.

As a matter of fact, in the assembly I vary at will this assembly distance quote between the moving part and the static part.
So I do not see why - from your explanation - I should not be able to do it with a flexibility option when I integrate the assembly in a larger one.

But apparently it is not possible..

thanks! Edo

 

[3DDave]

The English word that applies to assembly offsets is "dimension." In Pro/E these are d1, d2 for dimension 1 and dimension 2.

The English word "quote" means to copy the words of another. I see how one would arrive at quote via quota, but the English took words from too many languages to be that simple.

When you assign flexibility, select the Dimension tab and then select the component that should move. It should show the dimensions that control that item. Select the dimension itself. If it is done right, it should add "d1" or "d5" or what ever dimension name is correct to the list. I have never had it not work this way. If you can, copy the screen and show the flexibility choices on a message here. Maybe that will help.

"Creo Parametric - Adding Flexibility in Assemblies"

http://www.youtube.com/watch?v=4X4dPr__sLM