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ASME Y14.41-2003 (R2008)
M00052516
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ASME Y14.41-2003 (R2008) Digital Product Definition Data Practices
standard by ASME International, 08/01/2003
Full Description
3D modeling is the future of design and ASME Y14.41 sets the rules. Y14.41 extends ASME Y14.5M into the 3D world.
The development of this National Standard was initiated at the request of industry and the U.S. Government. Developers of this standard include independent consultants and individuals from General Motors Corporation, Dassault-Systems, The Boeing Company, U.S. Department of the Army - TACOM-ARDEC, Rockwell Collins Inc., Raytheon Company, Thiokol Propulsion, EDS PLM Solutions, General Dynamics Land Systems, Lockheed Martin Aeronautics Company, Ford Motor Company, Caterpillar Inc., DEPCO Inc., Rolls-Royce Corporation, CNH Global NV, Purdue University, and Hutchinson Technology Inc.
The Y14.41 standard establishes requirements, and references documents applicable to the preparation and revision of digital product definition data, referred to as data sets. Y14.41 defines the exceptions and additional requirements to existing ASME standards for using product definition data sets or drawings in 3D digital format. This standard supports two methods of application: model only, and model and drawing in digital format.
The structure of the standard begins with the requirements common to both methods (model only, and model and drawing in digital format), and then branches to the other sections that have differing requirements for each method.
It also provides a guide for the many computer aided design (CAD) software packages to develop better modeling and annotation practices for CAD and engineering disciplines.
Adoption Notice: ASME Y14.41 was adopted on 7 July 2003 for use by the Department of Defense, (DoD). Proposed changes by DoD activities must be submitted to the DoD Adopting Activity: Commander, US Army TACOM-ARDEC, ATTN: AMSTA-AR-QAW-E, Picatinny Arsenal, NJ 07806-5000.
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Engineering Drawing
and Related Documentation
Practices
ASME Y14.41-2003
DIGITAL PRODUCT DEFINITION DATA
PRACTICES
An American National Standard
ASME Y14.41
ADOPTION NOTICE
ASME Y14.41, Digital Product Definition Data Practices, was adopted on 7 July 2003 for use by the Department of Defense, (DoD). Proposed changes by DoD activities must be submitted to the DoD Adopting Activity: Com- mander, U.S. Army TACOM-ARDEC, ATTN: AMSTA-AR-QAW-E, Picatinny Arsenal, NJ 07806-5000. Copies of this document may be purchased from The American Society of Mechanical Engineers (ASME), 22 Law Drive, PO Box 2900, Fairfield, NJ 07007-2900; https://www.asme.org.
Custodians: Adopting Activity:
Army — AR Army — AR
Navy — SA Air Force — 16 DLA — DH
Review Activities:
Army — AT, AV, CE, CR, EA, GL, MI, SM, TE Navy — AS, CH, EC, MC, OS, SH, TD, YD Air Force — 11, 13, 19, 68, 70, 71, 84, 99
DLA — CC, IS NSA — NS
AMSC N/A AREA DRPR
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
A N A M E R I C A N N A T I O N A L S T A N D A R D
DIGITAL PRODUCT DEFINITION DATA
PRACTICES
ASME Y14.41-2003
Date of Issuance: August 15, 2003
The next edition of this Standard is scheduled for publication in 2007. There will be no addenda or written interpretations of the requirements of this Standard issued to this edition.
ASME is the registered trademark of The American Society of Mechanical Engineers.
This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large.
ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity.
ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assumes any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility.
Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.
ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals.
No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise,
without the prior written permission of the publisher.
The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990
Copyright © 2003 by
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
All rights reserved Printed in U.S.A.
CONTENTS
Foreword ........................................................................ Committee Roster ................................................................ | vi vii |
1 General .................................................................... | 1 |
1.1 Scope.................................................................. | 1 |
1.2 Structure of Standard .................................................. | 1 |
1.3 Figures ................................................................ | 1 |
1.4 Reference to This Standard............................................. | 1 |
1.5 Units .................................................................. | 1 |
1.6 Text in Figures ........................................................ | 1 |
1.7 Symbols ............................................................... | 1 |
1.8 References ............................................................. | 1 |
1.9 Definitions and Terminology ........................................... | 2 |
2 Data Set Identification and Control ........................................... | 2 |
2.1 General................................................................ | 2 |
2.2 Related Data........................................................... | 4 |
2.3 Data Management ..................................................... | 4 |
3 Data Set Requirements ...................................................... | 4 |
3.1 General................................................................ | 4 |
3.2 General Model Requirements........................................... | 5 |
3.3 General Method Requirements ......................................... | 7 |
3.4 Management Data ..................................................... | 7 |
3.5 Security Marking ...................................................... | 7 |
3.6 Views on Models ...................................................... | 9 |
4 Design Model Requirements ................................................. | 10 |
4.1 General................................................................ | 10 |
5 Common Requirements for Product Definition Data ............................ | 11 |
5.1 Common Requirements ................................................ | 11 |
5.2 Model Requirements ................................................... | 11 |
5.3 Drawing Requirements................................................. | 16 |
6 Notes and Special Notations ................................................. | 26 |
6.1 Common Requirements ................................................ | 26 |
6.2 Model Requirements ................................................... | 26 |
6.3 Drawing Requirements................................................. | 27 |
7 Model Values and Dimensions ............................................... | 27 |
7.1 Common Requirements ................................................ | 27 |
7.2 Model Requirements ................................................... | 28 |
7.3 Drawing Requirements................................................. | 29 |
8 Plus and Minus Tolerances .................................................. | 30 |
8.1 Common Requirements ................................................ | 30 |
8.2 Model Requirements ................................................... | 30 |
8.3 Drawing Requirements................................................. | 30 |
iii |
Datum Applications 30
Common Requirements 30
Model Requirements 30
Drawing Requirements 36
Geometric Tolerances 39
Common Requirements 39
Model Requirements 39
Drawing Requirements 49
Figures
Contents of a Product Definition Data Set 3
Contents of a Model 4
Left-Hand and Right-Hand Model Coordinate Systems 6
Design Model Cutting Plane 8
Design Model With Offset Section 10
Display Management 12
Annotation and Model Geometry Relationship 14
Tolerance Query Associativity 15
Simplified Feature Representation and Attributes 17
Annotation Planes Relative to Model Geometry 18
Graphic Display of Associated Annotation 19
Listing of Digital Element Identifiers 20
Queries for Datum Feature Symbols and Datum Target Symbols 20
Queries for Datum Targets 21
Queries for Coordinates and Supplemental Geometry 22
Annotated Model 23
Design Model and Drawing 24
Axonometric Views 25
Placement and Attachment of Basic Dimensions 28
Placement and Attachment of Size Dimensions 29
Attachment Techniques: Fillets, Rounds, and Chamfers 31
Attachment Techniques: Reliefs and Step Surfaces 32
Attachment Techniques: Countersinks and Oblique Surfaces 33
Attachment Techniques: Depth, Spotface, Remaining Thickness 34
Attachment Techniques: Notches, Flats, and PIN Heights 35
Datum System and Coordinates Relationship 36
Datum Feature Symbol Attachments 38
Partial Surface as a Datum Feature 39
Datum Targets and Symbols Attachment 40
Equalizing Target Points Establish a Datum Axis on an Internal Cylindrical
Surface 41
Two Cylindrical Features Establish a Datum Axis 42
Pattern of Features Establish a Datum Axis 43
Two Coaxial Features Establish a Datum Axis 44
Co-Planar Surfaces Establish a Datum Plane 45
Separated Surfaces Establish a Datum Plane 46
Datum Targets and Symbols in an Axonometric View 48
General Application of Geometric Tolerances – Coincident or Perpendicular Annotation Plane 50
Circularity – Sphere, Cylinder, Conical, or Revolved 52
Cylindricity 54
Straightness – Directed by Line Element 55
Straightness – Directed by Ordinate Axis 57
Straightness – Cylindrical or Conical Surface 58
Straightness – Median Line or Median Plane 58
Orientation – Planar Surfaces 59
iv
10-9 Each Element Orientation – Directed by Line Element........................ | 60 |
10-10 Each Element Orientation – Directed by Ordinate Axis ....................... | 61 |
10-11 Orientation – Inclined Surface ............................................... | 62 |
10-12 Orientation – Cylinder or a Set of Opposed Parallel Surfaces ................. | 63 |
10-13 Orientation of an Axis With a Parallel Planes Tolerance Zone ................ | 64 |
10-14 Profile – Planar, Conical, or Revolved Surface................................ | 65 |
10-15 Profile – Mulitple or Co-Planar Surfaces ..................................... | 66 |
10-16 Profile – Between Basis...................................................... | 67 |
10-17 Profile – All-Around Application ............................................ | 68 |
10-18 Profile – Unilaterally Disposed .............................................. | 69 |
10-19 Profile – Unequally Disposed................................................ | 70 |
10-20 Line Profile – Directed By Line Element ..................................... | 71 |
10-21 Line Profile – Directed By Ordinate Axis .................................... | 72 |
10-22 Position – Individual Patterns of Features.................................... | 73 |
10-23 Position – Projected Tolerance Zones ........................................ | 74 |
10-24 Position – Extremities of Long Holes ........................................ | 75 |
10-25 Position – Elongated Holes (Slots) ........................................... | 76 |
10-26 Bi-directional Position – Polar or Rectangular ................................ | 77 |
10-27 Position – Combined with Profile............................................ | 78 |
10-28 Concentricity and Symmetry ................................................ | 79 |
10-29 Runout – Attachments and Associativity..................................... | 80 |
10-30 Runout – Perpendicular and Cylindrical Surfaces ............................ | 81 |
10-31 Runout – Spherical, Conical, and Revolved Surfaces.......................... | 82 |
10-32 Axonometric Views – Feature Control Frames ............................... | 83 |
10-33 Axonometric Views – Limited Area Application ............................. | 84 |
10-34 Axonometric Views – Straightness, Each Element Applications ............... | 85 |
10-35 Axonometric Views – Parallel Planes Tolerance Zone......................... | 86 |
10-36 Axonometric Views – Multiple Surfaces ..................................... | 87 |
10-37 Axonometric Views – Between Basis......................................... | 88 |
10-38 Axonometric Views – Profile Unilaterally Disposed .......................... | 89 |
10-39 Axonometric Views – Profile Unequally Disposed............................ | 90 |
Tables | |
7-1 Resolved Dimension Examples .............................................. | 27 |
8-1 Plus and Minus Tolerance Applications...................................... | 30 |
10-1 Form Tolerances ............................................................ | 49 |
10-2 Orientation Tolerances ...................................................... | 51 |
10-3 Profile Tolerances ........................................................... | 53 |
10-4 Location Tolerances ......................................................... | 53 |
10-5 Runout Tolerances .......................................................... | 56 |
Mandatory Appendix
I Symbols 91
v
FOREWORD
The development of this Standard was initiated at the request of industry and the government. A meeting was held to determine the interest in this subject in January 1997 in Wichita, Kansas, hosted by The Boeing Company in their facility. A subsequent meeting was held during the spring ASME meeting in 1997 to enlist membership of those who would be interested in working this project.
This Standard was largely built using the e-mail systems now available to industry and govern- ment. This was actually a revolutionary happening, since in some part, the subcommittee was establishing ground rules for the use of 3D data in new design systems that were not fully tested or fully developed. The subcommittee understands a need for documented systems and systematic work. The evolution of the tools available to those that create and produce drawings has enhanced the capabilities of designers in producing complex hardware. The computer and the computer graphics design software is at a stage where using the design package to extend the normal drawing usage to a new level is a real possibility. Those who have chosen to spend the time and effort in the definition of the product shall see a return on their investments associated with implementing three-dimensional drawing packages. The accuracy of the product design is unpar- alleled, and provides the users of the design data the ability to interrogate the digital data that controls the design. Companies were clamoring for guidelines on how to use these innovative techniques. There were many issues in using the 3D data for the manufacture and inspection of the product. This is indeed a first, since digital data was usable in the manufacturing of the product but was widely disapproved for inspection. The intent of this Standard is to set forth a logical and manageable system in the use of the new design systems available to manufacturers both large and small. This advancement is a change in media used in the design, manufacture, and inspection cycles of the product.
Suggestions for improvement of this Standard are welcomed. They should be sent to The American Society of Mechanical Engineers, Attention: Secretary, Y14 Main Committee, Three Park Avenue, New York, NY 10016.
This Standard was approved as an American National Standard on July 7, 2003.
vi
ASME STANDARDS COMMITTEE
Y14 Engineering Drawing and Related Documentation Practices
(The following is the roster of the Committee at the time of approval of this Standard.)
OFFICERS
F. Bakos, Chair
K. E. Wiegandt, Vice Chair
C. J. Gomez, Secretary
COMMITTEE PERSONNEL
R. Anderson, Dimensional Control System, Inc.
F. Bakos, Consultant
J. V. Burleigh, The Boeing Co.
R. A. Chadderdon, Southwest Consultants
M. E. Curtis, Jr., Rexnord Industries, Inc.
D. E. Day, Monroe Community College
C. W. Ferguson, WM Education Services
L. W. Foster, L. W. Foster Associates, Inc.
C. J. Gomez, The American Society of Mechanical Engineers
B. A. Harding, Purdue University
K. S. King, Naval Surface Warfare Center, Dahlgren Division
A. Krulikowski, General Motors Corp.
H. S. Lachut, ABB Combustion Engineering, Inc.
J. G. Liska, Aerojet Propulsion, Division of Gencorp
P. J. McCuistion, Ohio University
P. E. McKim, Caterpillar, Inc.
E. Niemiec, MTD Products, Inc.
R. L. Nieukirk, Alternate, Caterpillar, Inc.
G. H. Whitmire, Gary Whitmire Associates
K. E. Wiegandt, Sandia National Laboratory
B. A. Wilson, The Boeing Co.
P. Wreede, Hutchinson Technology, Inc.
SUBCOMMITTEE 41 — DIGITAL MODELING
A. Krulikowski, Chair, General Motors Corp.
N. Smith, Vice Chair, The Boeing Co.
B. Dinardo, Secretary, U.S. Department of the Army, TACOM-ARDEC
D. M. Braun, Rockwell Collins, Inc.
J. L. Cerio, Raytheon Co.
Cubeles, Dassault-Systems
D. Cunningham, Jr., Thiokol Propulsion
P. E. Damron, The Boeing Co.
K. Dobert, EDS PLM Solutions
D. L. Ellis, General Dynamics Land Systems
L. Holmes, Raytheon Co.
L. F. Irwin, SDRC
J. I. Miles, Lockheed Martin Aeronautics Co.
T. J. Miller, Ford Motor Co.
M. A. Murphy, General Motors Corp.
G. R. Mussell, CNH Global NV
R. L. Nieukirk, Caterpillar, Inc.