对于定向公差这一部分,ASME Y14.5-1994和ASME Y14.5-2009有何区别.对于定向公差这一部分,ASME Y14.5-1994和ASME Y14.5-2009有何区别,对于定向公差,2009版和1994版有哪些不一样的地方,

对于定向公差这一部分,ASME Y14.5-1994和ASME Y14.5-2009有何区别.对于定向公差这一部分,ASME Y14.5-1994和ASME Y14.5-2009有何区别,对于定向公差,2009版和1994版有哪些不一样的地方,
对于定向公差这一部分,ASME Y14.5-1994和ASME Y14.5-2009有何区别.
对于定向公差这一部分,ASME Y14.5-1994和ASME Y14.5-2009有何区别,对于定向公差,2009版和1994版有哪些不一样的地方,

对于定向公差这一部分,ASME Y14.5-1994和ASME Y14.5-2009有何区别.对于定向公差这一部分,ASME Y14.5-1994和ASME Y14.5-2009有何区别,对于定向公差,2009版和1994版有哪些不一样的地方,
全部的变化都在下面列着：对工程技术人员应该能看懂.
1：
One of the major revisions is the reformatting of the Standard,the order of the sections and material within the sections without reversing any of the 1994 principles.
-Section 1 Scope,Definitions,and General Dimensioning
-Section 2 General Tolerancing and Related Principles
-Section 3 Symbology
-Section 4 Datum Reference Frames
2：
-Section 5 Tolerances of Form
-Section 6 Tolerances of Orientation
-Section 7 Tolerances of Location
-Section 8 –Tolerances of Profile
-Section 9 –Tolerances of Runout
3：
-Appendix A –Principle Changes and Improvements
-Appendix B –Formula for Positional Tolerancing
-Appendix C –Form,Proportion,and Comparison of Symbols
-Appendix D –Former Practices
-Appendix E –Decision Diagram for Geometric Controls
4：
•The sections were rearranged to make the flow of the material flow from the basic concepts to the more complex.
•Principle Revisions and Improvements-Revised definitions-New terms-Fundamental rules added
5：
Principle Revisions and Improvements (Cont)
-New symbology
-Degrees of Freedom emphasized for datums
-Datum selection example on a small assembly
6：
Principle Revisions and Improvements (Cont)
-Ability to add the value of a datum simulator in the feature control frame
-Datum shift added
-Added restrained parts-Simplified Orientation explanation
7：
Principle Revisions and Improvements (Cont)
-Major reformatting of section on location tolerances
-Expanded coverage of composite positional tolerancing
-Expanded coverage of profile tolerancing
8：
There will be an opportunity for questions following each presentation.The answers and comments are the opinion of the presenters and do not constitute an official ASME interpretation of the standard.