4 Replies Latest reply on Aug 2, 2018 12:12 PM by Bryan Obermeyer

    Equation driven pattern

    Bryan Obermeyer
    Bryan Obermeyer Aug 2, 2018 9:32 AM

      I am trying to find a way to have Hole Wizard drive the number of holes in a part based on overall length(see attached image).

      I would like add an equation to a pattern that will drive part count (Z) by overall length (X) so that the spacing (Y) is between 12.000 and 16.000.

      I have to believe that other people have tried something similar?

      Addtionally, I would like to drop this into a Library Feature and was wondering if that would cause any issue?

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        • Re: Equation driven pattern
          Todd Blacksher
          Todd Blacksher Aug 2, 2018 10:04 AM (in response to Bryan Obermeyer)

          Bryan,

          You don't need to write an equation, just use the option "Up to Reference" under linear pattern.

          There is an example of this here: SWW18 Presentation - All The Small Things

          Save you a ton of time!

          todd

          EDIT: for my example, I created a plane that was offset from the end of the part to use as the "reference" for the pattern.

          2nd EDIT: Download the sample files and look for the room assembly, I used this technique to place the 2x4's in the walls.

            • Re: Equation driven pattern
              Bryan Obermeyer
              Bryan Obermeyer Aug 2, 2018 11:43 AM (in response to Todd Blacksher)

              I just watched your presentation. Awesome amount of info. Thank you!

              I used the Up To Referance and it works very well and it is much less work.

              Is it possible to get the 2 outer most points fixed (2 in from edge) and have the inner very by count AND distance (no les then 12 and no greater then16)?

              I did find the "Instances to Vary" switch but its still not quite what I want.

                • Re: Equation driven pattern
                  Todd Blacksher
                  Todd Blacksher Aug 2, 2018 11:51 AM (in response to Bryan Obermeyer)

                  Here is something that you can try -

                  Set the first hole at a specific distance from the one end,

                  Set the last hole at a specific distance from the other end,

                  Set a plane through the center of the last hole,

                  Pattern the first hole, using the new plane for your "up to reference"

                  Both holes on the ends will stay in place, and everything between them will be free to move.

                  Not sure about varying the inside distance - if you set it at 14", it would be easy to vary the quantity.

                  I may have to ponder this a little more . . .

                  todd