Computer Numerical Control

Computer Numerical Control : Concepts & Programming

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Description

Now in a newly updated and expanded fourth edition, our most popular CNC programming book continues to provide readers with an excellent foundation in programming codes and syntax. Programs represented in the book are not as complex as those found in Industry. However, they have been deliberately engineered to provide readers with demonstrations of basic concepts of CNC programming that they can learn from and apply to a variety of industrial situations. Comprehensive in scope, the book features detailed discussion of two-axis and three-axis programming, basic trigonometry, and advanced CNC concepts such as mirror imagery, polar rotation, and helical interpolation. A comprehensive glossary is also included for the benefit of readers who may be new to the CNC programming world.
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Product details

  • Mixed media product | 438 pages
  • 187.96 x 236.22 x 22.86mm | 725.74g
  • Cengage Learning, Inc
  • Delmar Cengage Learning
  • Clifton Park, United States
  • English
  • 4th edition
  • 0766822907
  • 9780766822900

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An Introduction to Numerical Control Machinery. Numerical Control Systems. Process Planning and Tool Selection. Tool Changing and Tool Registers. Programming Coordinates. Two-Axis Programming. Three-Axis Programming. Math for Numerical Control Programming. Linear and Circular Interpolation. Cutter Diameter Compensation. Do Loops and Subprograms. Advanced CNC Features. The Numerical Control Lathe. Programming CNC Turning Machines. Use of Computers in Numerical Control Programming. The Future of Numerical Controls. EIA Codes. Word Address Codes Used in Text Example. Codes in Common Use with Tape Machinery. Safety Rules for Numerical Control. Useful Machining Formulas and Data. Machining Formulas. Lathe Canned Cycle Example. Sample Programs. Sample Part Program. Sample Milling Program. Sample Lathe Program. Glossary. Related SME Titles. Index.
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Table of contents

Contents. Preface. Chapter 1 An Introduction to Numerical Control Machinery. The History of NC. CNC Machines. Input Media. Binary Numbers. Tape Formats. Objectives of Numerical Control. Applications in Industry. Chapter 2 Numerical Control Systems. Components. Types of Control Systems. Servomechanisms. Loop Systems. The Cartesian Coordinate System. Positive and Negative Movement. Positioning Systems. Setting the Machine Origin. Dimensioning. Chapter 3 Process Planning and Tool Selection. Process Planning. Tooling for Numerical Control. Tooling for Hole Operations. Milling Cutters. Special Inserted Cutters. A Processing Example. Speeds and Feeds. Chapter 4 Tool Changing and Tool Registers. Tool Changes. Automatic Tool Changers. Tool Storage. Tool Length and Tool Length Offset. Chapter 5 Programming Coordinates. Hole Operations. Milling Operations. Mixing Absolute and Incremental Positioning. Metric Coordinates. Chapter 6 Two-Axis Programming. Introduction. Parts of a CNC Program. Word Address Format. Drilling Example-Absolute Positioning. Drilling Example-Incremental Positioning. Milling Example 1. Milling Example 2. Milling and Drilling Example. Chapter 7 Three-Axis Programming. Introduction. A Programming Task Using Three Axes. Other G-Codes Used in CNC Programming. Using and Indexer. Programming Example. Chapter 8 Math for Numerical Control Programming. Basic Trigonometry. Using Trigonometry for Cutter Offsets. A Milling Example. A Lathe Example. Chapter 9 Linear and Circular Interpolation. Linear Interpolation. Circular Interpolation. A Comprehensive Example. Chapter 10 Cutter Diameter Compensation. Definitions and Codes. Program Example. Special Considerations. Fine Tuning with Cutter Diameter Compensation. Chapter 11 Do Loops and Subprograms. Do Loops. Subprograms. Calling a Subprogram. Subroutines for Cutter Diameter Compensation. Nested Loops. Chapter 12 Advanced CNC Features. Mirror Imaging. Polar Rotation. Helical Interpolation. Chapter 13 The Numerical Control Lathe. Lathe Bed Design. Axis Movement. Toolholders and Tool Changing. Spindle Speeds. Feedrates. Machine Origin and Work Coordinate Systems. Quicksetters. Chapter 14 Programming CNC Turning Machines. Machine Reference Point. Diameter vs. Radius Programming. Turning and Facing. Taper Turning. Circular Interpolation. Drilling. Threading. A Complete Lathe Example. Canned Cycles. Chapter 15 Use of Computers in Numerical Control Programming. Offline Programming Terminals. Computer-Assisted Programming. Computer-Aided Programming Languages. Computer Graphics Programming. Chapter 16 The Future of Numerical Controls. NC in Prototype and Job Shops. CNC in Manufacturing. Employment Opportunities in NC. Appendix 1 EIA Codes. Preparatory Functions. Miscellaneous Functions. Other Addresses. Appendix 2 Word Address Codes Used in Text Example. Preparatory Functions (G Codes) Used in Milling. Miscellaneous (M) Functions Used in Milling and Turning. Preparatory Functions (G Codes) Used in Turning. Appendix 3 Codes in Common Use with Tape Machinery. Preparatory Functions (g Codes). Miscellaneous (m) Functions. Appendix 4 Safety Rules for Numerical Control. Safety Rules for Operating Machines. Safety Rule for Programmers. Appendix 5 Useful Machining Formulas and Data. Machining Formulas. Cutting Speed Data. Feedrate Data. Appendix 6 Lathe Canned Cycle Example. Tooling Used. Sequence of Operations. Program Notes. Canned Cycle Notes. Appendix 7 Sample Programs. Sample Part Program. Sample Milling Program. Sample Lathe Program. Glossary. Related SME Titles. Index.
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