Knurling Specification and Tool Size Chart
Hello All.
I am currently working on designing a copper component which I intend to press-fit into a plastic component. I would like to design-in a straight knurl feature so as to help prevent rotation of the copper component.
I have just recently started to become familiar with the knurling process and would like to inquire about the Knurl Specification and Tool Size Chart:
[url]http://www.engineersedge.com/manufacturing_spec/knurl_chart.htm[/url]
My first attempt of the knurl design is to use a 128 Diametral pitch with 36 teeth.
Am I reading the chart correctly? Will the starting diameter of the copper shaft need to be .281 inches and then have a final knurled diameter (I'm assuming major diameter) become .293in?
Would this mean that the minor diameter will become approximately .269in? In other words will the tool need to "roll" into the copper part at a depth of approx 0.006in in order to displace or raise a tooth 0.006in above the blank diameter?
I apologize if I have confused anyone due to the way I am wording this... if someone could possible explain the definitions of the chart a bit... I think that would greatly help me.
Thanks for your time.