30 degree diamond knurl

S_Regula

I'm trying to accurately model a 30 degree diamond knurl. The 30 degrees is measured from the vertical axis. I found a way to model knurling using a helix on a cylindrical face and using a remove sweep to "cut" the groove along the helix. But, I don't see a way to define the helix based on a specified angle (30 degrees in this application). Does anyone know of a way to create a helix at a given angle, like I'm trying to do?

TIA!

MichaelPascoe

Here is one way you can do this:

Calculate pitch with this equation: 
pitch  =  (π * diameter) / tan(angle)

Example document:
https://cad.onshape.com/documents/ec23266df76b42834bec804f/w/1bd5e08a53511a24e2e59cb5/e/b0a244b76242e358fb8937ed?renderMode=0&uiState=63a1dc4231a9ef1a6663cd6f

Source for equation: 
https://study.com/academy/lesson/helix-angle-definition-formula-calculation.html

MichaelPascoe

Here is one way you can do this:

Calculate pitch with this equation: 
pitch  =  (π * diameter) / tan(angle)

Example document:
https://cad.onshape.com/documents/ec23266df76b42834bec804f/w/1bd5e08a53511a24e2e59cb5/e/b0a244b76242e358fb8937ed?renderMode=0&uiState=63a1dc4231a9ef1a6663cd6f

Source for equation: 
https://study.com/academy/lesson/helix-angle-definition-formula-calculation.html

S_Regula

MichaelPascoe said:

Here is one way you can do this:

Calculate pitch with this equation: 
pitch  =  (π * diameter) / tan(angle)

Example document:
https://cad.onshape.com/documents/ec23266df76b42834bec804f/w/1bd5e08a53511a24e2e59cb5/e/b0a244b76242e358fb8937ed?renderMode=0&uiState=63a1dc4231a9ef1a6663cd6f

Source for equation: 
https://study.com/academy/lesson/helix-angle-definition-formula-calculation.html

That seems to do the trick. Thanks!