ASME Y14.41 pdf download

ASME Y14.41 pdf download Digital Product Definition Data Practices
1.1 SCOPE
This Standard establishes requirements and references documents applicable to the preparation and revision of digital product definition data, hereafter referred to as data sets. This Standard defines exceptions and addi- tional requirements to existing ASME standards for using product definition digital data sets or drawing graphic sheet in digital format, hereafter referred to as drawing graphic sheet. When no exception or additional requirements are stated, existing ASME standards shall apply.
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 apply for data sets that include a combination of a model and drawing graphics sheet.
1.2 STRUCTURE OF STANDARD This Standard supports two methods of preparing a data set: model only, and model and drawing graphic sheet. The structure starts with the requirements com- mon to both methods, and then branches to the other sections that have differing requirements for each method. In addition, it provides a guide for the many computer aided design (CAD) software packages to develop better modeling and annotation practices for CAD and engineering disciplines.
1.3 ASME Y14 SERIES CONVENTIONS The conventions in paras.
1.3.1 through 1.3.10 are guidance used in this and other ASME Y14 Series of standards.
1.3.1 Mandatory, Nonmandatory, Guidance, and Optional Words
(a) The word “shall” establishes a mandatory requirement.
(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 suggestions given for guidance only. (e) When the text of this Standard has an “or” state- ment it indicates that there are two or more options on how to comply with the stated requirement.
1.3.2 Cross-ReferenceofStandards. Cross-reference of standards in text with or without a date following the standard identity is interpreted as follows:
(a) reference to other ASME Y14 Series of standards inthe textwithouta date followingthe Standard identity indicates the issue of the standard as identified in the References section (section 2) shall be used to meet the requirement
(b) reference to other ASME Y14 Series of standards in the text with a date following the standard identity indicates that only that issue of the standard shall be used to meet the requirement
1.3.3 Invocation of Referenced Standards. The following examples define the invocation of a standard when specified in the References section (section 2) and referenced in the text of this Standard:
(a) When the text states “dimensioning and toleranc- ing shall be in accordance with ASME Y14.5-2009,” with no limitations to a specific subject or area of the Standard, the entire text of ASME Y14.5-2009 is invoked.
(b) When the text states “assign part or identifying numbers in accordance with ASME Y14.100-2004,” only the paragraph requirements on Part or Identifying Number assignment in ASME Y14.100-2004 are invoked.