Runout only used for parts that rotate in their assembly? 6

[SMO]

Hi,

In a recent design review, I was told I can't use Runout for a part that doesn't rotate in the assembly.

I applied Runout on the mounting flange, and the coaxial-alignment shaft opposite the flange, of an Axle Pin and referenced the datum axis of the primary shaft.

This part is fixed in it's assembly, but will surely be made on a lathe, and a rotating pulley/bearing will slip fit over the shaft primary shaft.

Since the Axle Pin is completely axisymmetric, with a tapped hole in center, there will be not way of telling it's axial orientation when it is fastened.

In any case, I felt this was a good case for Runout, instead of Perpendicularity, or Profile...

Is there anything wrong with that?





Regards,
SMO (NX10)

 

[SMO]

Well...

It's bee a couple of days since I last saw this thread - I just want to say thanks to everyone.
I agree with so many of these points of view, and it's always good to get feedback.

I think it's important not to throw accusations around (you're breaking rules!) and to bleed red ink all over someone work, simply because you're a "glass-half-empty kind of guy" (ode to Belanger ), or you assume Runout is somehow so expensive, or controls too much... I have a meeting with the manufacturer on Monday, we shall see which inspection method they are better suited for. If Runout is not preferred, I will then make changes. But only then

Thanks again, I needed a gut check as I'm standing behind my work.

Regards,
SMO (NX10)

 

[powerhound]

Wow. Offer a different view and defend your position...get flamed for it. Nice.

Can't wait to do it again.

John Acosta, GDTP Senior Level
Manufacturing Engineering Tech

 

[SMO]

Powerhound,

I was referring to the gentlemen I work with, that marked up my prints.

He just happened to have a similar stance as you, w.r.t. Runout, except he flat out said I'm breaking a rule.

I can assure you this person does not have the grasp you have with GD&T and I appreciate you commenting.

I've read and agreed with many of your posts over the years and I apologies if you took my statement as a personal affront.


Regards,
SMO (NX10)