Introduction to Computer Numerical Control (CNC) (2nd Edition)

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9780130142962: Introduction to Computer Numerical Control (CNC) (2nd Edition)

Using a practical, step-by-step approach and language that is easy for beginners to understand, this book gradually develops the most fundamental concepts in CNC (Computer Numerical Control) technology--with a focus on word address (G and M code) programming for the industry standard Fanuc controllers. Features over 85 completely solved, thoroughly tested programming examples--each program conveniently listed with all explanations appearing on the same page. Contains an abundance of flowcharts, Illustrations, and photographs, and a full chapter on right-triangle trigonometry. Modern Machine Tool Controls. Tooling for Hole and Milling Operations. Exploring Features of CNC Machining Centers. Basics of Blueprint Reading for CNC Programmers. Mathematics for CNC Programming. An Overview of CNC Shop Activities. Word Address Programming. Programming Hole Operations. Programming Linear Profiles. Programming Circular Profiles. Programming with Cutter Diameter Compensation. Programming with Subprograms. Introduction to the CNC Lathe. Fundamental Concepts of CNC Lathe Programming. Techniques and Fixed Cycles for CNC Lathe Programming. Modern Computer-Aided Part Programming. Elements of the Computer-Controlled Factory. Appendices cover safety shop rules; G and M codes for Fanuc controllers; recommended speeds and feeds for drilling, milling, and turning; important, easy-to-use machining formulas; glossary of CNC terms. For anyone wanting to learn the basics of Computer Numerical Control, particularly word address programming for Fanuc controllers.

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From the Publisher:

This book was written to provide basic training in an important area of modern manufacturing--computer numerical control (CNC). The approach is to gradually develop the most fundamental concepts in CNC technology. Every effort has been made to use language that is easy for beginners to understand.

Excerpt. Reprinted by permission. All rights reserved.:

One of the greatest challenges facing the United States today is in the area of manufacturing. To a large extent the computer has revolutionized this technology. It has virtually transformed the process of product design, analysis, and manufacture. Industries are finding that the new manufacturing technology demands well-trained personnel. Education is now being viewed as a continuous and long-term investment.

The third edition of Introduction to Computer Numerical Control (CNC) has been expanded and improved. The blueprint reading material has been separated as follows: Chapter 5Review of Basic Blueprint Reading for CNC Programmers and Chapter 6Review of Basic Geometric Dimensioning and Tolerancing for CNC Programmers.

Chapter 18 now includes a presentation on creating and simulating a complete part program using Mastercam CNC software. The third edition introduces the use of CNC software for writing, verifying, and simulating the milling word address programs in this text. To this end, a new Chapter 20, titled Verifying Part Programs, has been added. Included with this edition is a bound CD-ROM disk containing powerful, industrial quality CNC verification and simulation software.

The software displays real-time solid model animation of the machining that results from a part program. Additionally, it has an inspection mode that enables students to section as well as verify the dimensions of the machined part.

The milling part programs in the text have been edited so they will work properly with the verification and simulation software.

  • Each chapter begins with a brief listing of objectives and ends with a chapter summary.
  • Illustrations and photographs are used liberally throughout to reinforce pictorially what is being discussed.
  • Students are frequently directed to boxed-in key terms and concepts.
  • Flowcharts are used to teach CNC process planning and program planning.
  • The important topic of job setup is discussed in the many solved programming examples.
  • Fundamental word address (G and M code) programming is stressed.
  • Industrial standard practices and terms are emphasized in the solved programming examples.
  • Needless cross-referencing has been eliminated. Each program is listed with all explanations appearing on the same page.
  • Pattern recognition is emphasized. The student is taught to recognize a certain group of programming commands as a programming pattern. For example, pattern A commands start up the CNC machine, whereas pattern B commands cause a tool change to take place.
  • An excellent assortment of review exercises is provided at the end of each chapter. These exercises supply the student such important information as the operation to be performed, tooling, tool speed, tool feed, and job setup data.
  • The industry standard Fanuc controller is emphasized throughout the text.
  • Important mathematical principles are reviewed before programming is presented. A special chapter on right-triangle trigonometry provides the student with the critical mathematical information needed to understand programming.
  • The student is exposed to the big picture of CNC shop activities. A special chapter explains the most important operations to be carried out in manufacturing a part.
  • Appendixes contain information useful to the CNC student. They include a list of important safety precautions; summaries of G and M codes for milling and turning operations; recommended speeds and feeds for different materials with respect to drilling, milling, and turning operations; and important and easy-to-use machining formulas.
  • A comprehensive glossary of key CNC terms is provided at the end of the book.
  • Verification and simulation software enables students to visualize the effects of a written part program.

Introduction to Computer Numerical Control (CNC), Third Edition, can be used as an entry-level text for many different types of training applications. These include:

  • Undergraduate one-semester or two-semester CNC courses
  • Manual component of a CNC programming course
  • Industry training course
  • Seminar on CNC programming
  • Adult education course
  • Reference text for self-study

This textbook is designed to be used in many types of educational institutions:

  • Four-year engineering schools
  • Four-year technology schools
  • Community colleges
  • Trade schools
  • Industrial training centers

This work is the result of several years of experience in running CNC courses for both industrial personnel and the students at Queensborough Community College. We found that many existing texts were either too general or too advanced for direct application. As a result, we drafted supplementary notes containing step-by-step information. The notes were enhanced and tested extensively in the classroom. Several colleagues, both in industry as well as in education, were called upon for their input. A thorough market survey also influenced the final content. It should be noted that all the programs presented have been thoroughly tested. The student is advised to take the appropriate safety precautions when running them on a CNC machine.

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