Diamond shapes 2

[SBaugh]

OK I understand diamond shapes are not a big deal... on a flat surface.

I was asked to find a solution, but I am not having any luck. Hoping maybe someone else has some ideas on how to do this.

I have tired surfacing, bodies cut with a surface and because of the 9.289 radius from top to bottom and it throws everything off.

The image shows the part. The bottom row is on a flat surface, but the rest are on that radial face.

Anyone have any suggestions?

Scott Baugh, CSWP
Berry Plastics
Cad Admin\Design Engineer

http://www.scottjbaugh.com

"If it's not broke, Don't fix it!"

faq731-376

 

[Eltron]

Do you want the points of the diamond to touch and cover the whole surface?

Dan

http://www.eltronresearch.com

Dan's Blog

 

[SBaugh]

Here is an image of what its suppose to be very similair to.

Scott Baugh, CSWP
Berry Plastics
Cad Admin\Design Engineer

http://www.scottjbaugh.com

"If it's not broke, Don't fix it!"

faq731-376

 

[SnowCrash]

Could you create a line following a defined path on the surface and use that to create a swept cut, then pattern it and finally mirror that to get the diamonds?

--
Hardie "Crashj" Johnson
SW 2010 SP 2.1
HP Pavillion Elite HPE

 

[CorBlimeyLimey]

I agree with SnowCrash

Cut-Sweep a groove
Mirror the groove (or cut-sweep other direction)
Circular-Pattern the grooves

 

[MDGroup]

I was thinking along the same lines as SnowCrash.

Cut the grooves instead of extruding the diamonds.

The attached file shows it on a cylindrical part. Not too bad.

On the next post I will do the same for a curved surface and you can see how it distorts it.

 

[MDGroup]

See attached on a curved surface. It creates a bit of a unique pattern. You might be able to adjust the sketch, or sweep a profile that better follows the contour of the part to get different results.

Good Luck

 

[handleman]

Here's a really rough version of a method that allows you to do more "square" diamonds. It's a turd, but it could be polished considerably.

-handleman, CSWP (The new, easy test)

 

[handleman]

Dangit, wrong button...

-handleman, CSWP (The new, easy test)

 

[SnowCrash]

Make a sketch of one groove; mirror it; then do a circular pattern of the mirror. You can have control of the diamond pattern spacing that way.
"Bottoms up"

--
Hardie "Crashj" Johnson
SW 2010 SP 2.1
HP Pavillion Elite HPE

 

[SBaugh]

Really I tried that already as well. What you are seeing is my last attempt in that image with the bodies.

If you notice on your b part which represents our model better. The Diamonds change in size, they are not staying uniform. They have to stay uniformed... if this can't be done, that's fine I just have to show why it can't be performed and thus far I am not seeing a way to control this.

Thanks guys!


Scott Baugh, CSWP
Berry Plastics
Cad Admin\Design Engineer

http://www.scottjbaugh.com

"If it's not broke, Don't fix it!"

faq731-376

 

[Updraft]

Scott,

The image in your OP shows a much greater curvature than the image in the photo you later posted. Your last post indicates the diamonds must stay the same size. They are approximately the same size in the photo, but as the surface curves more something will have to give. I am guessing the number of diamond tips must be the same at both ends of the pattern and that the tips must close to form complete (whole) diamonds, as indicated in the photo. If you were to measure the tip-tip spacing they will be quite different from one end of the pattern to the other. So, to have an equal number of whole diamonds on each end they will, by definition, not be the same size.

What is the purpose of these diamonds and how will they be formed? (I see what looks like a parting line in the photo so that would indicate the part is molded. I am guessing the diamonds are for appearance or grip.)

- - -Updraft

 

[SBaugh]

I must not have made myself clear in the beginning or lead you guys to some confusion... my apologies.

The first image is of my actual part, the second image is to to show you how we need the diamonds to be in a uniformed or similiar to that 2nd image. However because of the large radius of the actual file I am working on the diamonds become not uniformed or run into each other.

I don't think what I was asked to do can actually be done in a "Molding" Process with the 9.289 Radius surface being the foundation of the diamond knurl shape.

I have tried many different methods to try and achieve this, and I always end up with a problem with the final solution. They are not uniformed, or they are running into each other near the top of the closure.

Thanks for taking time to look at this, been driving me nuts all day.

Scott Baugh, CSWP
Berry Plastics
Cad Admin\Design Engineer

http://www.scottjbaugh.com

"If it's not broke, Don't fix it!"

faq731-376

 

[SBaugh]

After looking at Partb and adding the same process seemed to work, by making the diamonds smaller. This allowed more of an illusion and the Boss man was happier with that solution than what we have come with in the past.... so unless the customer throws a fit I would say this question is answered... thank you all for your help!!

Scott Baugh, CSWP
Berry Plastics
Cad Admin\Design Engineer

http://www.scottjbaugh.com

"If it's not broke, Don't fix it!"

faq731-376