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Wednesday, August 29, 2012

Autodesk Inventor's Special Functions in Parameters

“Nearly all men can stand adversity, but if you want to test a man's character, give him power.”
Abraham Lincoln

Today, just a little tip for a midweek blog!

Most of us are familiar with Autodesk Inventor's Parameters.  It's where Inventor stores the dimensions that it uses to create it's components.

If you've used parameters before, you might even know that you can rename the parameters to give it more meaningful names than the defaults.

The Parameters used for this part


An additional capability of the parameters is the ability to build equations using Inventor's parameters.  Many of us have seen those before too.



Equations in Parameters can help make a design much more intelligent

But what many may not know, is that there are many special fuctions that can be used.  For example, the "Ceiling" function can round a number up to the nearest integer, while the "Floor" function will round a value down to the nearest integer.


For example, in the equation below : Maj_Dia_Ht / 0.4375 = 4.571 without an additional function.

Using the Ceiling function to round up to then next integer

But add the "Ceiling" function: Maj_Dia_Ht / 0.4375 in = 5.0 because this function rounds up to the nearest integer.

Why did I use this function?  Because I'm calculating the number of holes in the circular pattern, and this number needs to be an integer (you can't have 4.571 holes in a pattern!).

This is just a quick example of what can be done, but there are several functions available/

For more information on these functions, check out the Autodesk Wikipedia site

Take advantage of these when building equations!  Use the to your advantage!

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