Best technique for creating low profile rounded bumps on a curved surface

VM

Hello,

I am designing a rounded cup with circular raised bumps with a low profile. Almost like a tiny hill on a rounded surface. I’m trying to find a solution that looks clean and will be easy to manipulate if changes need to be made. Thanks.

bruce_williams

Here is my attempt.   A Linear pattern then a Curve pattern.  I am not sure the most economical as I do not pattern often.  I used Conic in sketch of 'bump' for a more interesting shape.

Cup with bumps.

Brad_Goodman

Here's a wacky little tool to do it with a FeatureScript. It will work on services that are relativity (but not perfectly) conic.

It will add bumps and optionally fillet them - (be careful to use proper sizes/angles/distances). It can obviously get pretty slow (so be patient).

You basically have to define an axis and starting point (mating connector) - and tell it to start and end a certian distance up this "shaft". 

https://cad.onshape.com/documents/f50b5deb2e01f396c74b7139/w/bbdf9e9180afbc76baa1a04e/e/07541c95c47b9a58cd0ada78

tim_aidley

I've just tried this out, and the first bump added is getting created as a separate part.

To fix it, I just transposed lines 95 and 96, so that bn is being incremented after the union, rather than before.

https://cad.onshape.com/documents/0017761dae3277232a21b754/w/2ca24145973852197f67a1ab/e/3b67ee33bc4ec5644313d8c0