Patterned Holes

Hi
I have a equally spaced linear pattern for a variable length part. How do I
get the number of instances for the pattern to increase to match the
increasing length of the part? I try to avoid eqautions, so many circular
references; not sure equations would work here.
Thanks gang

 

Equations will work just fine. Circular references shouldn't be a
problem if you know what you are doing. I have a pattern of holes that
expands to fit the part. It is driven by an equation that calculates
the number of instances along an edge. I have used this technique
several time including some more complex problems with bolted joints.
A design table will also work, but again, it is possible to have
circular references.

 

Paul,

I think he wants to add and subtract holes, not just adjust the spacing.
Don't know for sure, but I don't think you can do that with equations.
(could be wrong, never tried it)

Regards

Mark

 

Certainly can. I have created a part that changes the number of instances
of a hole based on the length of the part. You set the minimum spacing you
will allow at the end of the part & the desired hole spacing, change the
length of the part and rebuild it. It calculates the number of holes that
will fit on the part, without going below your end threshold, and then
centers the holes in the part. If, instead, you would prefer to have the
starting distance constant, that would be an easy change.

Let me know if you want it.

WT

 

You can I have done it. Double click the pattern feature and the quantities
show blue in the graphics area. Add an equation to the apropriate quantity.
Use the Dimension that drives the length and divide by the desired spacing.
It will round up or down to the nearest integer. You can use an IIF
statement to cause it to always round down.

Corey