When to change the ASME Y14.5 standard called out on the drawing
When to change the ASME Y14.5 standard called out on the drawing
(OP)
Our drawings state "Interpret drawing in accordance with ASME Y14.5-1994". Under what circumstances would it be appropriate to update the reference on the existing drawings to state ASME Y14.5-2009? Is there guidance on the subject?





RE: When to change the ASME Y14.5 standard called out on the drawing
http://www
Chris
SolidWorks 10 SP4.0
ctopher's home
SolidWorks Legion
RE: When to change the ASME Y14.5 standard called out on the drawing
So probably hold off until the engineering management is confident that everyone understands the standard, and even then 2009 should only be noted on new drawings or older parts that are revised and updated.
John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems
RE: When to change the ASME Y14.5 standard called out on the drawing
Depending on the CAD system, you may have to archive the old format files and recreate them for new or updated parts.
The important thing is to understand how the different versions of the standard will affect the interpretation of the part requirements, and how that affects anyone that has to rely on that data. That said, it is probably not a good idea to update existing drawings.
"Good to know you got shoes to wear when you find the floor." - Robert Hunter
RE: When to change the ASME Y14.5 standard called out on the drawing
Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net
RE: When to change the ASME Y14.5 standard called out on the drawing
Like others, I wouldn't change old drawings for the reasons listed.
You may choose to create new drawings to the new standard.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: When to change the ASME Y14.5 standard called out on the drawing
There are so many companies using the 94 standard referencing datums at MMC and the checking fixture is in RFS. They don't understand the 94 level to say nothing about the 2009 edition.
In the 2009 standard, a datum feature of size shown at MMC could mean that its MMB (maximum material boundary) is maximum material size even if it had a virtual condition qualifier. It could also mean its refinement if it had a GD&T qualifier and then a refinement. It could also be the virtual condition size. It all depends on whether the datum feature of size is a primary, secondary or tertiary datum. Kind of confusing.
I would suggest keeping to the 94 standard as long as possible and then make sure all personnel involve know and understand the changes to the 2009 level.
Dave D.
www.qmsi.ca
RE: When to change the ASME Y14.5 standard called out on the drawing
Matt Lorono
Lorono's SolidWorks Resources & SolidWorks Legion
&
RE: When to change the ASME Y14.5 standard called out on the drawing
Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net