Table Of ContentENGINEERING
DOCUMENTATION
FOR CAD/CAM
APPLICATIONS
MECHANICAL ENGINEERING
A Series of Textbooks and Reference Books
EDITORS
L. L. FAULKNER S. B. MENK.ES
Department of Mechanical Engineering Department of Mechanical Engineering
The Ohio State University The City College of the
Columbus, Ohio City University of New York
New York, New York
1. Spring Designer's Handbook, by Harold Carlson
2. Computer-Aided Graphics and Design, by Daniel L. Ryan
3. Lubrication Fundamentals, by J. George Wills
4. Solar Engineering for Domestic Buildings, by William
A. Himmelman
5. Applied Engineering Mechanics: Statics and Dynamics,
by G. Boothroyd and C. Poli
6. Centrifugal Pump Clinic, by Igor J. Karassik
7. Computer-Aided Kinetics for Machine Design, by
Daniel L. Ryan
8. Plastics Products Design Handbook, Part A: Materials
and Components; Part B: Processes and Design for
Processes, edited by Edward Miller
9. Turbomachinery: Basic Theory and Applications, by
Earl Logan, Jr.
10. Vibrations of Shells and Plates, by Werner Soedel
11. Flat and Corrugated Diaphragm Design Handbook, by Mario
Di Giovanni
12. Practical Stress Analysis in Engineering Design, by Alexander Blake
13. An Introduction to the Design and Behavior of Bolted Joints, by
John H. Bickford
14. Optimal Engineering Design: Principles and Applications,
by James N. Siddall
15. Spring Manufacturing Handbook, by Harold Carlson
I 6. Industrial Noise Control: Fundamentals and Applications,
edited by Lewis H. Bell
17. Gears and Their Vibration: A Basic Approach to Understanding
Gear Noise, by J. Derek Smith
18. Chains for Power Transmission and Material Handling: Design
and Applications Handbook, by the American Chain Association
19. Corrosion and Corrosion Protection Handbook, edited by
Philip A. Schweitzer
20. Gear Drive Systems: Design and Application, by Peter Lynwander
21. Controllin5 In-Plant Airborne Contaminants: Systems Design and
Calculations, by John D. Constance
22. CAD/CAM Systems Planning and Implementation, by Charles S. Knox
23. Probabilistic Engineering Design: Principles and Applications,
by James N. Siddall
24. Traction Drives: Selection and Application, by Frederick W. Heilich III
and Eugene E. Shube
25. Finite Element Methods: An Introduction, by Ronald L. Huston
and Chris E. Passerello
26. Mechanical Fastening of Plastics: An Engineering Handbook, by
Brayton Lincoln, Kenneth J. Gomes, and James F. Braden
27. Lubrication in Practice, Second Edition, edited by W. S. Robertson
28. Principles of Automated Drafting, by Daniel L. Ryan
29. Practical Seal Design, edited by Leonard J. Martini
30. Engineering Documentation for CAD/CAM Applications,
by Charles S. Knox
OTHER VOLUMES IN PREPARATION
ENGINEERING
DOCUMENTATION
FOR CAD/CAM
APPLICATIONS
CHARLES S. KNOX
Knox Consulting Services
St. Paul, Minnesota
MARCEL DEKKER, INC. New York• Basel
Library of Congess Cataloging in Publication Data
Knox, Charles S., [date]
Engineering documentation for CAD/CAM Applications.
(Mechanical engineering : 30)
Includes index.
1. CAD/CAM applications--Documentation. I. Title.
II. Series.
TS155.6.K67 1984 620'.0043'02854 84-1773
ISBN 0-824 7-7089-7
Copyright © 1984 by MARCEL DEKKER, INC. ALL RIGHTS RESERVED
Neither this book nor any part may be reproduced or transmitted in any form or by any
means, electronic or mechanical, including photocopying, micro-filming, and recording, or
by any information storage and retrieval system, without permission in writing from the
publisher.
MARCEL DEKKER, INC.
270 Madison Avenue, New York, New York 10016
Current printing (last digit):
10 9 8 7 6 5 4 3 2
PRINTED IN THE UNITED STATES OF AMERICA
To my two sons,David Stuart and Gary Sinclair, with love and respect
PREFACE
The purpose of this book is to emphasize to engineering, manufacturing, and account-
ing the importance of consistent, well-planned, and computer-oriented engineering
documentation systems. That such systems are needed to optimize flow of information
and to increase the efficiency of modern CAD/CAM systems will become apparent
as their interrelationships are discussed. Too many times engineering departments
give little thought to the documentation and communication requirements of other
departments. Thus, this book emphasizes and explains a set of principles and pro-
cedures needed to improve these requirements.
The word "flow" conveys an important concept when used with engineering doc-
umentation. Engineers consider their main task to be designing "things." Too little
time and effort has been spent by them to streamline methods for conveying the data
they generate which "flows" from engineering through manufacturing to accounting.
By "flow" we mean the means by which engineering drawings, their associated data,
bills of material, engineering changes, part number or revision level changes, parts
lists, and geometry are documented and disseminated to all other departments.
With the advent of CAD/CAM and the emphasis on integrated computer systems,
which now also include new data such as design geometry, the need for a more con-
sistent flow path has become mandatory. After all the segments of engineering docu-
mentation have been discussed, the actual flow of data will be described so the reader
can sense the reasons for each of these segments and their importance.
Some of the subjects we will cover include a simple part number system which
conforms to rules of interchangeability and configuration management, piece part
drawings for flexibility of design retrieval and manufacturing planning, design retrieval
to minimize the proliferation of new designs, a mechanized parts list and bill of ma-
terial for communication and integration of planning data with manufacturing sys-
tems, product structures for conveying manufacturing assembly requirements, and
modular design to minimize customizing bills of material for each new order.
Of course, many companies have well-documented systems which operate effi-
ciently today. For those companies, this book will serve to confirm their philosophies.
Many more, however, do not have efficient engineering documentation systems. Long
part numbers with obsolete or unimportant significance, multiple parts on one draw-
ing, customer job cost control, and many more inefficient and wasteful systems still
exist. This book will help those companies who have such problems to prepare plans
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