• Source: ASME Y14.5

ASME Y14.5 is a standard published by the American Society of Mechanical Engineers (ASME) to establish rules, symbols, definitions, requirements, defaults, and recommended practices for stating and interpreting Geometric Dimensions and Tolerances (GD&T). ASME/ANSI issued the first version of this Y-series standard in 1973.




Overview


ASME Y14.5 is a complete definition of Geometric Dimensioning and Tolerancing. It contains 15 sections which cover symbols and datums as well as tolerances of form, orientation, position, profile and runout. It is complemented by ASME Y14.5.1 - Mathematical Definition of Dimensioning and Tolerancing Principles. Together these standards allow for clear and concise detailing of dimensional requirements on a product drawing or electronic drawing package as well as the verification of the requirements on manufactured parts. Effective application of GD&T allows for parts to be verified by dimensional measurements, gauging, or by CMM.




History


The modern standard can trace its roots to the military standard MIL-STD-8 published in 1949. It was revised by MIL-STD-8A in 1953, which introduced the concept of modern GD&T "Rule 1". Further revisions have continued to add new concepts and address new technology like Computer Aided Design and Model-based definition. A list of revisions follows:

ASME Y14.5-2018, "Dimensioning and Tolerancing"
Current Standard
Preceded by ASME Y14.5-2009
ASME Y14.5-2-2017, "Certification of Geometric Dimensioning and Tolerancing Professionals"
Current Standard
Preceded by ASME Y14.5-2-2000
ASME Y14.5-2009
Succeeded by ASME Y14.5-2018
Preceded by ASME Y14.5M-1994
ASME Y14.5M-1994
Succeeded by ASME Y14.5-2009
Reaffirmed in 2004
Preceded by ANSI Y14.5M-1982
ANSI Y14.5M-1982
Preceded by ANSI Y14.5-1973
Reaffirmed in 1988
ANSI Y14.5-1973
Succeeded by ASME Y14.5M-1982
Preceded by USASI Y14.5-1966
USASI Y14.5-1966
Succeeded by ANSI Y14.5-1973
Preceded by ASA Y14.5-1957
ASA Y14.5-1957
Succeeded by USASI Y14.5-1966
Preceded by ASA Z14.1 Series




See also


Geometric dimensioning and tolerancing
CAD standards




References






External links


2018 | Y14.5 - Dimensioning and Tolerancing Official ASME page

Kata Kunci Pencarian:

• Ukuran kertas
• ASME Y14.5
• ASME Y14.41
• Geometric dimensioning and tolerancing
• ANSI/ASME Y14.1
• Engineering drawing abbreviations and symbols
• Reference dimension
• American Society of Mechanical Engineers
• Counterbore
• Spotface
• Engineering drawing