Clamp Type Knurling Tool

Someone have a rule or a chart relating knurl pitch to part diameter?
 
What I want is a rule or a chart to scale the size of the knurl and the diameter. In order to knurls not apper too rough or too

....intersting Reed Machinery knurls data
Suggest you buy diametral pitch knurls (accu-trak.com is one source). For example, 96DP knurls will track properly on a work blank diameter that is any multiple of 1/96 inch.
 
Suggest you buy diametral pitch knurls (accu-trak.com is one source). For example, 96DP knurls will track properly on a work blank diameter that is any multiple of 1/96 inch.
Yeah, yepyep, the Armstrong (NOS) wheels that I picked up are odd, their pitches are 14, 21, 33.
Other are all over the place. B&S had 12, 14, 16, 20, 25, 30. And then there is also 45, 50, &80 that I've come across.
Seems the more I learn about knurling the more confused I become.
1517956084694.png
 
Someone have a rule or a chart relating knurl pitch to part diameter?
The rule is that the circumference of the part has to be an exact multiple of the knurl spacing. Eg, if your knurl has sixteen knurls per inch, then the circumference has to be an exact multiple of a 1/16".

This results in weird diameters because π isn't 3, despite the Indiana State Legislature's attempt to declare otherwise.

The solution is to get a DP knurl. DP knurls already have the factor of π built in. For example, a 64 DP knurl works with any part that's an exact number of 64th's *in diameter*, no dorking with π required. 80 DP knurls work on anything an exact multiple of 1/16" *or* 0.05" in diameter, which is super convenient.

Sent from my Pixel XL using Tapatalk
 
Okay, even though this thread was started over a year ago, I would like to let you know of an American manufacturer of knurling dies. Take a look at what these folks have to offer.


Sorry, I don't know how to make a "hot link" to get you to the site.

Russ

Well, it looks like when I hit the button to post the reply, the link sort of reformatted itself to become hot. Cute.
 
I think there might be some affiliation there between Form-Rol and Accu-Trak. They are on the same street only a mile apart.
 
Back
Top