1 Aims and Features of This Book The contents of t. his book were originally planned t. o be included in a book en titled Geometric lIIodeling and CAD/CAM to be written by M. Hosaka and F. Kimura, but since the draft. of my part of the book was finished much earlier than Kimura's, we decided to publish this part separately at first. In it, geometrically oriented basic methods and tools used for analysis and synthesis of curves and surfaces used in CAD/CAM, various expressions and manipulations of free-form surface patches and their connection, interference as well as their qualit. y eval uation are treated. They are important elements and procedures of geometric models. And construction and utilization of geometric models which include free-form surfaces are explained in the application examples, in which the meth ods and the techniques described in this book were used. In the succeeding book which Kimura is to write, advanced topics such as data structures of geometric models, non-manifold models, geometric inference as well as tolerance problems and product models, process planning and so on are to be included. Conse quently, the title of this book is changed to Modeling of Curves and Surfaces in CAD/CAM. Features of this book are the following. Though there are excellent text books in the same field such as G. Farin's Curves and Surfaces for CAD /CAM[l] and C. M.

Curved object manufacturing has become an important subject in modern industry as more varieties of industrial products are being designed with sculptured surfaces. Known as CAMM (computer-aided modeling & machining), the subject is rapidly becoming one of the most critical issues in CAD/CAM. Up till now, there has been a gap between the theory in CAGD (computer-aided geometric design) and the practices in CAMM. The aim of this volume is to fill the gap by presenting a comprehensive coverage of practical solutions for engineers, while at the same time providing problems for researchers. The main focus of the work is on the approach to and strategy for solving engineering problems. A sound understanding of the structure or domain of the problem as well as available techniques or tools is provided in each case, with the main emphasis being on descriptive shape models. The broad mathematical principles of CAGD are covered, in addition to some details of practical implementation. The book is self-contained in that an undergraduate level of algebraic calculus is sufficient to follow the discussions.

Shape interrogation is the process of extraction of information from a geometric model. It is a fundamental component of Computer Aided Design and Manufacturing (CAD/CAM) systems. The authors focus on shape interrogation of geometric models bounded by free-form surfaces. Free-form surfaces, also called sculptured surfaces, are widely used in the bodies of ships, automobiles and aircraft, which have both functionality and attractive shape requirements. Many electronic devices as well as consumer products are designed with aesthetic shapes, which involve free-form surfaces. This book provides the mathematical fundamentals as well as algorithms for various shape interrogation methods including nonlinear polynomial solvers, intersection problems, differential geometry of intersection curves, distance functions, curve and surface interrogation, umbilics and lines of curvature, geodesics, and offset curves and surfaces. This book will be of interest both to graduate students and professionals.

This book offers a comprehensive introduction to Subdivision Surface Modeling Technology focusing not only on fundamental theories but also on practical applications. It furthers readers’ understanding of the contacts between spline surfaces and subdivision surfaces, enabling them to master the Subdivision Surface Modeling Technology for analyzing subdivision surfaces. Subdivision surface modeling is a popular technology in the field of computer aided design (CAD) and computer graphics (CG) thanks to its ability to model meshes of any topology. The book also discusses some typical Subdivision Surface Modeling Technologies, such as interpolation, fitting, fairing, intersection, as well as trimming and interactive editing. It is a valuable tool, enabling readers to grasp the main technologies of subdivision surface modeling and use them in software development, which in turn leads to a better understanding of CAD/CG software operations.

The book is the complete introduction and applications guide to this new technology. This book introduces the reader to features and gives an overview of geometric modeling techniques, discusses the conceptual development of features as modeling entities, illustrates the use of features for a variety of engineering design applications, and develops a set of broad functional requirements and addresses high level design issues.

This textbook explains how to create models with freeform surfaces using CATIA V5. CATIA is a three dimensional CAD/CAM/CAE software developed by Dassault Systèms, France. This textbook is based on CATIA V5-6R2014. Users of earlier releases can use this book with minor modifications. We provide files for exercises via our website. All files are in CATIA V5R20 so readers can open the files using later releases of CATIA V5. It is assumed that readers of this textbook are accustomed to the modeling tools and processes in how to construct solid models in CATIA V5. For basic modeling, assembly and drafting techniques, refer to the textbook written by the author. This textbook is suitable for anyone who are interested in learning how to create and use the freeform surface in constructing 3D models using CATIA V5.

N/AD BLURB Reviews recent developments in computer-aided geometric design and presents a state-of-the-art assessment of the area Includes chapters from top researchers in CAGD on key aspects of the field Features eight pages of color plates

Mastering Surface Modeling with SOLIDWORKS 2021 focuses on surfacing tools, an important aspect of SOLIDWORKS’ design capabilities that fills in the gaps that might be left by using solid modeling alone. If you are a SOLIDWORKS user currently relying on solid modeling for designs, or are just not familiar with surface modeling techniques, this book will add these skills to your repertoire to help you create the highest-quality models. For instructors teaching this advanced skillset, this book’s proven techniques, practical examples and training files will give students a broad understanding of the procedures needed to build freeform shapes and place them well on their way to creating sophisticated surface designs of their own. This manual is one of only a few on the market completely dedicated to mastering surfacing tools. Each of the ten chapters has clean, clear instructions with plentiful diagrams to lead you through carefully selected exercises based on the author’s own work experience and techniques. You are guided from a review of surfacing basics, to advanced surface modeling of real-world objects, to an explanation and example of hybrid modeling, to surface repairs and patches. Peruse the table of contents and pick and choose the chapters you are interested in or complete all chapters consecutively to give you an in-depth understanding of all the tools and procedures needed to create surface designs. The projects you will work on in this book include a shoehorn, computer mouse, phone case, a modem housing, and stents. Woven into each of these are procedures, approaches and solutions for possible issues that might arise when you are using surfacing tools. These can be applied to any project you create. Each project touches on a variety of frequently used commands such as extrude, loft, boundary, and sweep; surface revolved, filled, split, and knit; using deform and configurations; mirroring bodies; creating an axis, curve driven and circular patterns, fillets, and molded parts. Look for the post-it notes next to commands for helpful tips and definitions. Throughout the book, you will learn techniques of hybrid modeling, the combination of surface and solid modeling. The last part of the book takes it one step further. Chapter 8 examines hybrid modeling in-depth, guiding you step-by-step from a 2D sketch to the final product, a handle housing. The last two chapters focus on molded parts, creating and saving visual properties of models and how to repair faulty surfaces. The advanced surfacing tools and techniques in this book give you the confidence to tackle projects using hybrid modeling. It is the best method to take full advantage of SOLIDWORKS’ modeling power and create more complex designs.

Intro -- Title page -- Full title -- Copyright -- Dedication -- preface -- contents -- chapter 1 -- chapter 2 -- Chapter 3 -- Chapter 4 -- chapter 5 -- Chapter 6 -- chapter 7 -- chapter 8 -- chapter 9 -- Bibliography -- Index -- 1: Narosa -- 2: Alpha