ASME Y14.5M-(2008)?
ASME Y14.5M-(2008)?
(OP)
Has anyone had the opportunity to look over the new draft for ASME Y14.5M? Any comments on it? Anyone else have any comments about 1994 that they would like to see changed or added?
Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group





RE: ASME Y14.5M-(2008)?
I see that spotface is getting it's own symbol, a counterbore symbol with "SF" in it.
Has the new Profile modifier symbol (per Y14.41-2003) been included?
Believe it if you need it or leave it if you dare. - Robert Hunter
RE: ASME Y14.5M-(2008)?
Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group
RE: ASME Y14.5M-(2008)?
I did hear that many of the tough decisions where put off until next time, so this update may not be all the much different. I haven't see it though.
Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group
RE: ASME Y14.5M-(2008)?
Powerhound, GDTP T-0419
Production Supervisor
Inventor 2008
Mastercam X2
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SSG, U.S. Army
Taji, Iraq OIF II
RE: ASME Y14.5M-(2008)?
Believe it if you need it or leave it if you dare. - Robert Hunter
RE: ASME Y14.5M-(2008)?
Curious, what's the difference between spotface and counterbore according to the proposal?
Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group
RE: ASME Y14.5M-(2008)?
Believe it if you need it or leave it if you dare. - Robert Hunter
RE: ASME Y14.5M-(2008)?
Do you use this website, http://www.draftingzone.com/?
They have a write-up on the changes that are proposed.
John H. Dunten, CD
Certified Drafter
RE: ASME Y14.5M-(2008)?
Summary of Changes
by Gary Whitmire
A proposed new Y14.5 Geometric Dimensioning and Tolerancing Standard has just been officially released for comments. If past practice is any guide, this draft will become the new standard in a few months. This standard will replace the 1994 GD&T Standard. It is expected that all organizations which now use the 1994 Standard will eventually switch to this 2008 GD&T Standard. The proposed standard itself is 264 pages long, so following is a summary of a few of the changes from the 1994 Standard:
A. There are new symbols and dimensioning conventions for:
• All Over as used in Profile Control
• Continuous Features
• Independency
• Unequally-disposed Tolerance Zone
• Moveable Datum Target
• Datum Translation
B. There is a guide to the six degrees of freedom for datums
C. Non-perpendicularity of intersecting surfaces is addressed
D. There is a change under Spotface
E. Basic dimensions are clarified
F. There is a clarification on Limit of Size
G. There is a change to Rule 1
H. Tolerance of position has been reformatted
I. Dimensions defined by CAD data have been addressed
J. The effect of datum references in positional tolerances is explained in degrees of freedom
K. Control of coaxial features is addressed
L. There are new boundary methods
M. There are a number of new terms, including:
• Maximum Material Boundary (MMB)
• Least Material Boundary (LMB)
• True Geometric Counterpart (TGC)
• Regardless of Feature Boundary (RMB)
• Degrees of Freedom (DOF)
N. There are twenty (20) new definitions
O. A contoured surface can be a datum
P. There is a new datum symbol placement requirement
Q. There is a new leader line symbol
RE: ASME Y14.5M-(2008)?
I am eager to look the new standard over, though I'm not so sure how eager I am in implementing it.
Believe it if you need it or leave it if you dare. - Robert Hunter
RE: ASME Y14.5M-(2008)?
RMB & MMB. It is allowing for what I would of called Shift.
RE: ASME Y14.5M-(2008)?
RE: ASME Y14.5M-(2008)?
RE: ASME Y14.5M-(2008)?
What is that all about? Can anybody give me a clear explanation of what they are realy after? Is that similar to Datum Shift? And when is it not clear? or when is it clear? Any Help?
RE: ASME Y14.5M-(2008)?
Additionally, I have wondered what are the Geometric tests that one must pass to qualify to serve on the committee.
RE: ASME Y14.5M-(2008)?
Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group