ASME Y14.41:2012 pdf download

ASME Y14.41:2012 pdf download Digital Product Definition Data Practices Engineering Drawing and Related Documentation Practices
1.1sCOPE
This Standard establishes requirements and referencesdocuments applicable to the preparation and revisionof digital product definition data, hereafter referred toas data sets.This Standard defines exceptions and addi-tional requirements to existing ASME standards forusing product definition digital data sets or drawinggraphic sheet in digital format, hereafter referred to asdrawing graphic sheet. When no exception or additionalrequirements are stated, existing ASME standards shallapply.
it is essential that this Standard be used in close con-junction with ASME Y14.24,ASME Y14.34,ASME Y14.35M, and ASME Y14.100. In addition, classi-fication codes as defined in ASME Y14.100 may applyfor data sets that include a combination of a model anddrawing graphics sheet.
1.2STRUCTURE OF STANDARD
This Standard supports two methods of preparing adata set: model only,and model and drawing graphicsheet. The structure starts with the requirements com-mon to both methods, and then branches to the othersections that have differing requirements for eachmethod. In addition, it provides a guide for the manycomputer aided design(CAD) software packages todevelop better modeling and annotation practices forCAD and engineering disciplines.
1.3 ASME Y14 SERIES CONVENTIONS
The conventions in paras.1.3.1 through 1.3.10 areguidance used in this and other ASME Y14 Series ofstandards.
1.3.1 Mandatory,Nonmandatory,Guidance, andOptional Words
(a) The word “shall” establishes a mandatoryrequirement.
(b) The word”will” establishes an intended, manda-tory requirement.
(c) The words “should” and “may” establish a non-mandatory practice.
(d) The words “typical,””example,””for reference,”or the Latin abbreviation “e.g.”indicate suggestionsgiven for guidance only.
(e)When the text of this Standard has an “or” state-ment it indicates that there are two or more options onhow to comply with the stated requirement.
1.3.2 Cross-Reference of Standards. Cross-referenceof standards in text with or without a date followingthe standard identity is interpreted as follows:
(a) reference to other ASME Y14 Series of standardsin the text without a date following the Standard identityindicates the issue of the standard as identified in theReferences section (section 2) shall be used to meet therequirement
b) reference to other ASME Y14 Series of standardsin the text with a date following the standard identityindicates that only that issue of the standard shall beused to meet the requirement
1.3.3 Invocation of Referenced Standards.Thefollowing examples define the invocation of a standardwhen specified in the References section (section 2) andreferenced in the text of this Standard:
(a) When the text states “dimensioning and toleranc-ing shall be in accordance with ASME Y14.5-2009,” withno limitations to a specific subject or area of theStandard, the entire text of ASME Y14.5-2009 is invoked.(b)When the text states “assign part or identifyingnumbers in accordance with ASME Y14.100-2004,”onlythe paragraph requirements on Part or IdentifyingNumber assignment in ASME Y14.100-2004 are invoked.(c) When the text states “for gaging principles seeASME Y14.43,”the text provides a cross-reference ofwhere to find guidance for dimensioning and toleranc-ing for gages and fixtures, and no portion ofASME Y14.43 is invoked.
1.3.4 Parentheses Following a Definition.When adefinition is followed by a standard referenced in paren-theses,the standard referenced in parentheses is thecontrolling standard for the definition.
1.3.5 Notes.Notes depicted in this Standard inALL UPPERCASE letters are intended to reflect actual drawing entries. Notes depicted in initial uppercase or lowercase letters are to be considered supporting data to the contents of this Standard and are not intended for literal entry on drawings. A statement requiring the addition of a note with the qualifier “such as” is a requirement to add a note, and the content of the text is allowed to vary to suit the application.
1.3.6 Acronyms and Abbreviations. Acronyms and abbreviations are spelled out the first time used in this Standard followed by the acronym or abbreviation in parentheses. The acronym is used thereafter throughout the text.
1.3.7 Units. The International System of Units (SI) is featured in this Standard. It should be understood that U.S. Customary units could equally have been used without prejudice to the principles established.
1.3.8 Figures. The figures in this Standard are intended only as illustrations to aid the user in under- standing the practices described in the text. In some cases figures show a level of detail as needed for empha- sis. In other cases, figures are incomplete by intent so as to illustrate a concept or facet thereof. The absence of figure(s) has no bearing on the applicability of the stated requirements or practice. To comply with the requirements ofthis Standard, actual data sets shall meet the content requirements set forth in the text. To assist the user of this Standard, a listing of the paragraph(s) that refer to an illustration appears in the lower right-hand corner of each figure. This listing may not be all inclusive. The absence of a listing is not a reason to assume inapplicability. Most figures are illustrations of models in a three-dimensional environment. Figures illustrating drawings in digital format have a border included. When the letter “h” is used in figures for letter heights or for symbol proportions, select the applicable letter height in accordance with ASME Y14.2.