Geometric Design Tolerancing: Theories, Standards and Applications

  • Hoda A. ElMaraghy

Table of contents

  1. Front Matter
    Pages i-xiv
  2. Modeling, Representation and Processing of Tolerances, Tolerance Inspection: a Survey of Current Hypothesis

  3. Tolerance Theory and Standards

  4. Tolerance Representation in CAD

    1. Front Matter
      Pages 117-117
    2. André Clément, Alain Rivière, Philippe Serré, Catherine Valade
      Pages 122-131
    3. Vladimir T. Portman, Roland D. Weill, Victoria G. Shuster
      Pages 132-146
  5. Modeling of Geometric Errors

  6. Tolerance Analysis and Synthesis

  7. Evaluation of Geometric Deviations

    1. Front Matter
      Pages 347-347
    2. Ashraf O. Nassef, Anis Limaiem, Hoda A. ElMaraghy
      Pages 372-386
    3. Mohamed A. E. Gadalla, W. H. ElMaraghy
      Pages 387-397
    4. Elsayed A. Orady, Songnian Li, Yubao Chen
      Pages 398-409
  8. Industrial Applications and CAT Systems

    1. Front Matter
      Pages 411-411
    2. Kiwamu Kase, Norio Matsuki, Hiormasa Suzuki, Fumihiko Kimura, Akitake Makinouchi
      Pages 413-418
    3. Benoit Marguet, Luc Mathieu
      Pages 419-427
    4. Otto W. Salomons, Fred J. A. M. van Houten, Hubert J. J. Kals
      Pages 438-452
    5. Donald M. Wisniewski, Praveen Gomer
      Pages 453-464
  9. Back Matter
    Pages 465-468

About this book


The importance of proper geometric dimensioning and tolerancing as a means of expressing the designer's functional intent and controlling the inevitable geometric and dimensional variations of mechanical parts and assemblies, is becoming well recognized. The research efforts and innovations in the field of tolerancing design, the development of supporting tools, techniques and algorithms, and the significant advances in computing software and hardware all have contributed to its recognition as a viable area of serious scholarly contributions. The field of tolerancing design is successfully making the transition to maturity where deeper insights and sound theories are being developed to offer explanations, and reliable implementations are introduced to provide solutions. Machine designers realized very early that manufacturing processes do not produce the nominal dimensions of designed parts. The notion of associating a lower and an upper limit, referred to as tolerances, with each dimen­ sion was introduced. Tolerances were specified to ensure the proper function of mating features. Fits of mating features included clearances, location fits, and interference fits, with various sub-grades in each category assigned a tolerance value depending on the nominal size of the mating features. During the inspection process, a part is rejected if a dimension fell outside the specified range. As the accuracy requirements in assemblies became tighter, designers had to consider other critical dimensions and allocate tolerances to them in order to ensure the assembly's functionality.


Normal Reverse Engineering control manufacturing mechanical engineering mechanism metal optimization simulation software uncertainty

Editors and affiliations

  • Hoda A. ElMaraghy
    • 1
  1. 1.Faculty of EngineeringUniversity of WindsorCanada

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