topic Re: Struggling with a way to model dimples in a loudspeaker cone in Fusion Design, Validate & Document Forum

Struggling with a way to model dimples in a loudspeaker cone

josh — Tue, 05 Jun 2018 05:56:14 GMT

Hi all,

I've been working on a model of a loudspeaker driver, and its metal cone has five dimples in it that I need to include. I've included a picture of the features on the physical part I'm modeling so you can see clearly what I'm referring to.

The cone is a body created with a revolved sketch; my thought thus far has been to somehow create a sketch plane that is perpendicular to the axis of one of the dimples, draw a profile on it, then extrude. Actually, I'll probably need to extrude twice - once to remove existing material, and a second time to add material. Once a single feature is created, I'd just copy it around the speaker's axis to yield the total of five. I guess the crux of my problem is that I can't yet think of a way to draw the appropriate sketch plane to get started.

If anyone can suggest a way to do this, or even to accomplish the end goal in a completely different way, I'm all ears.

Thanks!

Re: Struggling with a way to model dimples in a loudspeaker cone

davebYYPCU — Tue, 05 Jun 2018 07:20:15 GMT

Rectangle is the inclined revolve, speaker surface,

the other sketch the cross section of a volcano, was extruded to the rim, and

half of it revolved for the front / lower fillet

Used Plane on a Path to locate the purple sketch plane.

Not super accurate, but

Might help....

Re: Struggling with a way to model dimples in a loudspeaker cone

TrippyLighting — Tue, 05 Jun 2018 10:58:26 GMT

My question would be how thick is that cone ?

Depending on the answer I'd actually not start this as a solid, but as a surface to be thickened.

Re: Struggling with a way to model dimples in a loudspeaker cone

Anonymous — Tue, 05 Jun 2018 11:55:04 GMT

Peter beat me to it but here's my method. Sorry no screencast.

Re: Struggling with a way to model dimples in a loudspeaker cone

chrisplyler — Tue, 05 Jun 2018 14:54:21 GMT

@TrippyLighting

Very nice.

Doesn't light up though. Needs blue LEDs.

Re: Struggling with a way to model dimples in a loudspeaker cone

TrippyLighting — Tue, 05 Jun 2018 15:47:06 GMT

Here's my version. Not sure what that has to do with a speaker anymore 😉

Re: Struggling with a way to model dimples in a loudspeaker cone

josh — Wed, 06 Jun 2018 05:59:58 GMT

Wow, thanks for the quick replies everyone! Much appreciated. I'll look these over soon.

Re: Struggling with a way to model dimples in a loudspeaker cone

josh — Wed, 06 Jun 2018 06:02:19 GMT

Hey Peter -

Then cone is about .2mm thick. I hadn't thought of making it a surface and thickening it; that sounds promising.