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ljordan

Add Measurement as Paramenter

Status: New Idea
by ljordan on ‎08-13-2014 12:52 PM

Add measurement of an edge or maybe space between 2 components as a parameter.

 

It is dumb to have to create a sketch just to create a driven dimension so that a certain measurement can be referenced.

 

This is found here: http://forums.autodesk.com/t5/Inventor-IdeaStation/Add-measurement-as-parameter/idi-p/3740472,

but I don't believe it got the attention it deserves!!

Comments
by kim.schroeder on ‎08-14-2014 01:01 AM

I'm not sure that I fully understand your wish(?) - but do you want to use, for example, a mate constraint as a reference parameter?

 

Mate2.jpgMate1.jpg

 

Mate3.jpg

 

 

 

 

 

 

 

 

 

 

Since every constraint is a specific parameter (that can be renamed) it can easily be used as a reference parameter - both locally as well as exported for use in other model files. 

by *Expert Elite* on ‎08-14-2014 07:19 AM

I see this request as a way to create a reference dimension between two components, not a driving dimension.  If I apply a constraint between two objects, IV will try to solve the full set of assembly constraints and keep the assigned distance between the two components.  That makes the constraint a driving dimension.  

 

I might need to know the distance between two components as a result of all the other constraints in the assembly, so I need a reference dimension. 

 

If i could create a measurement feature in the assembly or part, then I don't need to run the measurement tool each time I change the assembly. Instead, I create my measurement features for all the critical dimensions, make a note in the Engineers Notebook about acceptable values, write some iLogic to throw warnings when those values are exceeded, and remember what it all means when I return to a 3 year old design.

 

I could even use the measurement results in calculations with other model and user parameters.  Maybe some simple calculations showing the effects of the assembly COG on the reaction forces at its mounting locations...

 

By the way, if this feature is added to Inventor, it needs to update as a result of changes to position reps. 

by ljordan on ‎08-14-2014 07:30 AM

Nailed it swalton.

 

kim.schroeder, using your example, the space between the 2 components may change, or their position may be more logically constrained by other means, but the space that you reference as "d0" is critical for another component somewhere else in the model. 

 

It could certainly be done the way you display, but it would require many redundant constraints to keep up with.

 

It may satisfy some situations, but not nearly even 5% of the situations in which this functionality would have been useful to me.  I do what you mention when I can.

 

Thanks for the responses.

 

 

by *Expert Elite* on ‎08-14-2014 07:54 AM

Added:

 

I had forgotten about Autolimits, which are a good start. 

 

See: http://help.autodesk.com/view/INVNTOR/2014/ENU/?guid=GUID-DBE14CEE-1F79-475D-84A7-0B6B66753DA5

 

They will allow me to moniter specfic dimensions, physical properties, areas, etc, but do not (IV2014) show up in the parameter list for the assembly.  I can't use them for downstream calcs, or notes/tables on prints.

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