Knurl Callout

[AntMechEng]

I have seen knurls called out in many ways yet can't find a "standard" on how to do it. I know that if you have your TPI, helix angle and OD called out, you will more than likely get what you want. Is there a "correct" or "standard" way to do this? Possibly and ANSI or ASME standard? I am asking for straight, helix and diamond knurls. Thanks.

AntMechEng

 

[ctopher]

Have you checked Machinery Handbook?

Chris
SolidWorks 06 5.1/PDMWorks 06
AutoCAD 06
ctopher's home (updated 10-27-06)

 

[AntMechEng]

I have checked the Machinery's Hanbook (Ed. 25) and there is a lot in regards to knurl tools and standard/ANSI requirements for the tools. However, the Handbook doesn't have much in regards to how to callout a knurl on a drawing properly or "correctly". Like I said, I know I can get enough information on the drawing to get what I want, but I wanted the correct or standard way to do it.

Thanks,
AntMechEng

 

[dizman]

Standard call-out is fine, ex.- for diametral> Pitch Knurling "96 DP 30* DIAMOND KNURL DIA.XX MIN. AFTER KNURLING" or for circular pitch knurling> "30 TEETH PER 25.4 30* DIAMOND KNURL DIA.XX MIN. AFTER KNURLING"

Circular pitch knurling is based on the number of teeth per
25.4 mm of circumference* and is for use on surfaces above 25.4 mm diameter.

*Normal teeth per 25.4 mm are measured perpendicular to the teeth.

 

[CorBlimeyLimey]

dizman ... it's OK ... you are allowed to use the word "inch" in this forum.

 

[KENAT]

Assuming you are US based (and we all know what assuming does)

96 DP DIAMOND KNURL ALL AROUND.

Got me what I wanted the last time I used it. It was in a note with cross reference to the appropriate diameter on the part.

At the time I looked it up somewhere but can't recall where.

ASME Y14.5 1.8.17 reads:

“Knurling is specified in terms of type, pitch and diameter before and after knurling. Where control is not required, the diameter after knurling is omitted. Where only a portion of a feature requires knurling, axial dimensioning is provided. See Fig. 1-46. “

Fig1-46 has a side view of a shaft dia19.7 with a portion indicated for knurling. The actual callout is “Pitch 0.8 Raised Diamond Knurl”

It does reference ANSI/ASME B94.6 at 1.8.17.2 for info on inch knurling.

Back in the UK though I seem to recall drawings that just had a callout to the appropriate area with “Coarse Knurl” or “Fine Knurl”.