Re: Positional tolerance question

DJ Bjorklund wrote:
>
> Not looking for a doctorial thesis on mechanical tolerancing, just an
> opinion. We're machining fairly low-tolerance mechanical parts. A
> machinist disciplined for not checking holes ultimately discovered to
> be off the center-line ~.025 makes the somewhat weak point that there
> was "...no dimension, so what's the tolerance?!"
>
> Cylindrical part
> Cross hole (pictorially on CL) 1.000" from end
>
> In your typical "three place means +/-.005" situation is location
> tolerance about the CL a function of the OD, .875 in this case, thus
> +/-.005,...or even perhaps +/-.0025 ?
>
> E-mail is fine, thanks



Are you or your machinist intermingling MMC, Maximum Material Condition
, and RFS, Regardless of Feature Size, which are used with a True
Position callout and Ordinate Dimensioning??

MMC and RFS don't apply in ordinate type dimensioning.

--
Regards,
Steve Saling
aka The Garlic Dude ©
Gilroy, CA
The Garlic Capital of The World
http://www.pulsareng.com/
.

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