ASME Y14.47:2019 pdf download

ASME Y14.47:2019 pdf download.Model Organization Practices
1.1 Scope
This Standard establishes a schema for organizing a three-dimensional (3D) model and other associated information within the contextofa digital productdefinition data setfor the purpose ofconveyinga productdefinition thatenables a model-based enterprise (MBE). This Standard contains no requirements pertaining to drawing graphic sheets. The schema defines a common practice to improve design productivity and to deliver consistent data content and structure to consumers of the data to facilitate common exchange interfaces.
1.2 Introduction
This Standardoutlines modelorganizationschemapractices to supportmodel-baseddefinition(MBD). This provides a set of requirements and guidelines for the computer-aided design (CAD) user. It is intended to be the foundation for design development efforts in an MBE. Previously,3Dmodelshadanaccompanyingdrawinggraphicsheet.WithcurrentadvancesinCADcapabilities,product definition previously shown on a drawing graphic sheet may be defined and displayed directly in the MBD. This is accomplished by utilizing a combination of annotations and naming conventions to organize the 3D model. This makes the 3D model a master source for obtaining product definition data and eliminates the need for a drawing graphic sheet. The organization practices defined bythis Standard are necessaryto establish a common method to facilitate access to the MBD data in the data set. While the focus ofthis Standard is initially on mechanical items, the intent is to provide a foundation for use in any discipline. The schema are compliant with an annotated model defined in ASME Y14.41.
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 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, mandatory requirement. (c) The word “should” establishes a recommended practice. (d) The word “may” establishes an allowed practice. (e) The words “typical,” “example,” and “forreference,” and the Latin abbreviation “e.g.,” indicate suggestions given for guidance only. (f) The word “or” used in conjunction with a requirement or a recommended practice indicates that there are two or more options for complying with the stated requirement or practice. (g) The phrase “unless otherwise specified” (UOS) shall be used to indicate a defaultrequirement. This phrase is used when the default is a generally applied requirement, and an exception may be provided by another document or requirement. 1.3.2 Cross-Reference of Standards. Cross-reference ofstandards in text with or without a date following the stan- dard designator is interpreted as follows: (a) Reference to other ASME Y14 standards in the textwithouta date following the standard designator indicates the edition of the standard as identified in the References (section 2) shall be used to meet the requirement. (b) ReferencetootherASMEY14standardsinthetextwithadatefollowingthestandarddesignatorindicatesthatonly that edition shall be used to meet the requirement.1.3.3 Invocation ofReferenced Standards. Thefollowingexamples definetheinvocationofastandardwhenspecified in the References (section 2) and referenced in this Standard: (a) When a referenced standard is cited in the text with no limitations to a specific subject or paragraph(s) of the standard, the entire standard is invoked. For example,“Dimensioning and tolerancing shall be in accordance with ASME Y14.5” is invoking the complete standard because the subject ofthe standard is dimensioning and tolerancing, and no specific subject or paragraph(s) within the standard is invoked.For example, “Assign part or identifying numbers in accordance with ASME Y14.100” is invoking only the paragraph(s) on part or identifying numbers because the subject ofthe standard is engineering drawing practices, and part or identifying numbers is a specific subject within the standard. (c) When a referenced standard is cited in the text without an invoking statement such as “in accordance with,” the standard is invoked for guidance only. Forexample,“Forgagingprinciples, see ASME Y14.43” is onlyforguidance and no portion of the standard is invoked.