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Sunday, October 03, 2010

Creating a Cooling Grill in Inventor Sheet Metal - By Using Plastics Tools

“The wise adapt themselves to circumstances, as water moulds itself to the pitcher” 
 Chinese Proverb

Inspiration comes from unique directions at times.  I've been offsite working with a lot of electronic encolsures, which has been a fantastic experience for me.  But that's a story for another day.

While speaking with one of our techs, Mike Carlson about the project, the subject of cooling grills came up.

An example of a fairly typical cooling grill


Try using the grill from the Plastics tool set, he suggests.

I pause for a second.  I think there was a visible light bulb over my head.  My wheels spin for a second at at my first instinct, which is to blurt out, "That's a plastics tool, you can't use that in sheet metal!"

But my brain processes the information.  It can't find a flaw in that plan.  Instead my answer is "Bloody hell, that will work!"

I try it at my first opportunity.  Sure enough.  It works great.

So here it is!  Thank Mike Carlson for the inspiration.  I can't take the credit.

How to create a cooling grill in Inventor's sheet metal environment.... using plastics.

6 comments:

  1. Ah, but you can't apply a feature-based-fillet to it, can you? When LASER-cutting the grill, you want nice roundy-roundy corners.

    Nice, but only almost there...

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  2. It can be done by following up with the corner round or fillet tool. A bit pick intensive, but if you extract it as a punch, you can extract the fillets too.

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  3. I know what you are saying, but surely rule fillet was DESIGNED to decrease picking?

    But we you use it, IV thinks you're creating a multi-body, and consequently won't let you stay as a sheet-metal part. That is, you can't invoke Rule Fillet in sheet-metal environment, and can't go back to sheet metal after converting in order to use the rule fillet. Why?

    Yes, technically the corner round is what I want, but functionally it's the same thing.

    And I don't really want to use a punch, because there's less "tuning" available once it's applied, and really it would be an awkward work-around. But you're not an Autodesk employee, I shouldn't be ranting at you. Sorry. Keep up the good work.

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  4. Rob, I hadn't thought about trying the plastics rule fillet. But alas, you are correct.

    Being a plastics tool, asking the rule fillet to work in the sheet metal environment is a bit too much to ask.

    As for the 'why'. That I don't know. Perhaps it relates to drafting typical in plastics parts, but that's pure speculation on my part.

    I was using the standard modeling fillet, and the corner fillet. Which is where the pick intensive part comes in.

    I even thought of using different combinations of the rib tools, but they really only 'shift' the place you put the time in, at least in my opinion.

    While I definitely agree that punches aren't the be all end all, you may be able to make use of the drive tables, and some of the variables.

    Although ultimately, the ultimate control is granted by a 'built from the ground up' feature.

    And don't feel you have to apologize for ranting. Your comments were constructive for myself, and I'm sure for others reading this blog.

    We're all members of an extended 'design team', and what good would this blog be if it were all one sided?

    Thanks for the input!

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  5. Anonymous11:56 PM

    I like this blog its very informative and attractive also. Thanks to author for this post it’s very easy to understand. sheet metal fabrication companies

    ReplyDelete
  6. I was using the standard modeling fillet, and the corner fillet. Which is where the pick intensive part comes in.

    ReplyDelete