How to inspect the 5 different dimensions using an optical comparator

F

Frank T.

#1
I need help on how to inspect the 5 different dimensions in the attached drawing using an optical comparator with a Micro Vu Q16 processor. Any advice would be greatly appreciated.
 

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bobdoering

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#2
Re: Inspection help!!!

Usually, when I see that many basic dimensions, there is a profile called out somewhere. If it is a MMC profile, then I would use a template. All I saw was the true position for the hole, but that can not be all, I am thinking....:cool:
 
Last edited:

Jim Wynne

Staff member
Admin
#3
Re: Inspection help!!!

I need help on how to inspect the 5 different dimensions in the attached drawing using an optical comparator with a Micro Vu Q16 processor. Any advice would be greatly appreciated.
I don't see a "B" datum, nor any feature control for any of the basic dimensions (other than the position callout for two holes).
 
F

Frank T.

#4
Re: Inspection help!!!

You are correct there is a profile of a surface callout, "profile of a surface to be within .030" RFS relative to datums A, B, C RFS".

Datum "B" is the small hole in the middle and datum "C" is the bottom hole.

I didn't realize they were missing, sorry...
 

Stijloor

Staff member
Super Moderator
#6
Re: Inspection help!!!

You are correct there is a profile of a surface callout, "profile of a surface to be within .030" RFS relative to datums A, B, C RFS".

Datum "B" is the small hole in the middle and datum "C" is the bottom hole.

I didn't realize they were missing, sorry...
A few questions....

  • Datum feature "B" is a feature of size (HOLE); is it called out at RFS as well?
  • Based on the datum feature symbol, I concluded that the drawing is the ANSI Y14,5M-1982 version, is that correct?
  • Is the "profile of a surface" callout specified as "all around?"
  • Can you show us the actual drawing?
Stijloor.
 
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