Hello everyone!
I’m looking for some advice on a knurling issue I’m facing.
I’m doing straight knurling on a 303 stainless steel bar, 14 mm diameter. I’m using form knurling, and the knurl pitch is 0.6 mm.
The problem is that I don’t seem to reach the expected knurl depth. The actual depth I achieve is around ~0.15 mm, and I’m not sure if this is reasonable for this pitch and material.
I've heard that an industry standard is to achieve a knurl depth of about 50% of the pitch.
Also, is it normal to end up with rather flat tops / flat crests on the knurl with this setup, or should the crests be sharper?
Cross section of my knurling:
https://www.image2url.com/r2/default/images/1776865574296-3caa0f40-435b-4d0a-a10b-6f1634a8751f.png
Thanks in advance for your input!