Taji, Iraq OIF II RE: ASME Y14.5 For Inspection? ajack1 (Automotive) 27 Apr 08 04:26 If the part is out of square, should the holes follow the edge or should they be perpendicular to the bottom edge? While an inspector would probably make sure the holes are 1" from the edge, there is still a chance that the part wouldn't actually work because the designer may have needed the perp requirement but didn't think about the fact that the OD of the part could actually be out of square by as much as the default angular tolerance per the implied 90 rule. Is the intent that the holes be 1" from the edge or are they really supposed to be aligned perpendicular to the bottom edge.
#Asme y14.5 drafting series
An example would be a square plate with a series of holes called out 1" from one edge. The problem that you can run into using coordinate dimensioning (non-GD&T) is that there is ambiguity in inspection.
#Asme y14.5 drafting how to
If you're asking if there is a standard that says HOW to inspect to Y14.5M-1994 then I concur with Dave.no. Chris said it twice and I concur, you use specified standard to determine the inspection method. The way you get there is up to the inspector. It doesn't say "Use CMM" or "Starrett calipers only" but it tells you the theoretical condition that the limits of size and condition must not exceed. Most of the figures you see in the standard that have "means this" in the upper left corner are an illustration for inspection. RE: ASME Y14.5 For Inspection? ctopher (Mechanical) 26 Apr 08 20:57 Get a copy of it.Īs I stated before, there is nothing in the standard on application including the statement on applying GD&T when there is a function and relationship.
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There is an ASME standard for gages (checking fixtures) though and it should be used for gauge drawings. I could not do this unless I had a lot of experience in measuring at one time.
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I have been training in the subject for over 20 years with empahsis on measuring methods. The standard does not state this and there are some trainers in the subject who promote applying GD&T on everything. I learned GD&T so many years ago using a book by Lowell Foster and I always remember that statement "function and relationship" and it makes sense. Usually the drawings states "complies with ASME Y14.5M-94" but I have never seen standards for inspection on the drawing -ever!