Computer Numerical Control (CNC)
CNC Plasma Cutters
Computer numerical control (CNC) is a computer controller that reads instructions in order to guide a machine tool, a powered mechanical device typically used to fabricate components by the selective removal of material. In other words, for a plasma cutting machine CNC tells the plasma torch where to cut!
With the increased automation of manufacturing processes with CNC machining, considerable improvements in speed, consistency and quality have been seen.
Several CNC machines may be combined into one station, a "cell", to progressively machine a part requiring several steps. CNC machines today are controlled directly from files created by CAM (Computer Aided Manufacture) software packages, so that a part or assembly can go directly from design to manufacturing without the need of producing a drafted paper drawing of the manufactured component.
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CNC - Computer Numerical Control
Parametric Programming
A more recent advancement in CNC interpreters is support of logical commands, known as parametric programming. Parametric programs incorporate both G-code and these logical constructs to create a programming language and syntax similar to BASIC.
Parametric programming also enables custom machining cycles, such as creating fixtures creation or bolt circles. If you want to create additional fixture locations, you can guide the machine by hand to the new location and the fixture subroutine called.
Because of these features, a parametric program is more efficient than using CAD/CAM software for large part runs.
Computer Numerical Control (CNC) Items of Interest Introduction to Computer Numerical Control, 4/EPutting all the elements together, this text addresses CNC (Computer Numerical Control) technology in a comprehensive format that offers abundant illustrations, examples and exercises. It includes a strong foundation in blue print reading, graphical descriptions of CNC machine tools, a chapter on right triangle trigonometry and programming that uses Fanuc Controllers. It emphasizes program pattern recognition and contains completely solved programming examples and self-contained programming examples. Thoroughly updated for this edition, it includes two new chapters, four new appendices, and is bundled with Predator Simulation and Kwik Trig software.  CNC Programming Handbook, Third EditionOver its first two editions, this best-selling book has become the de facto standard for training and reference material at all levels of CNC programming. Used in hundreds of educational institutions around the world as the primary text for CNC courses, and used daily by many in-field CNC programmers and machine operators, this book literally defines CNC programming. Written with careful attention to detail, there are no compromises. Many of the changes in this new Third Edition are the direct result of comments and suggestions received from many CNC professionals in the field. This extraordinarily comprehensive work continues to be packed with over one thousand illustrations, tables, formulas, tips, shortcuts, and practical examples. The enclosed CD-ROM now contains a fully functional 15-day shareware version of CNC tool path editor/simulator, NCPlot™. This powerful, easy-to-learn software includes an amazing array of features, many not found in competitive products. NCPlot offers an unmatched combination of simplicity of use and richness of features. Support for many advanced control options is standard, including a macro interpreter that simulates Fanuc and similar macro programs. The CD-ROM also offers many training exercises based on individual chapters, along with solutions and detailed explanations. Special programming and machining examples are provided as well, in form of complete machine files, useful as actual programming resources. Virtually all files use Adobe PDF format and are set to high resolution printing. FEATURES Fully functional shareware version of CNC toolpath simulator/editor, NCPlot(TM), included on the CD-ROM. This powerful software includes an amazing array of features, including those not found in competitive products. Support for many advanced features is standard, and the included macro interpreter can simulate Fanuc and compatible macro toolpath programs  Build Your Own CNC Machine (Technology in Action)Build Your Own CNC Machine is a groundbreaking book targeted at the growing number of hobbyists wanting to fabricate wood and metal parts of their own design in their home workshops. Lead author Patrick Hood-Daniel is creator of buildyourcnc.com and is well-known for his affordable, easy-to-build designs for home CNC machines. His videos on CNC machines are watched by tens of thousands of hobbyists. Each one of those viewers, and each of his website visitors represents a potential sale of this book. The interest in hobbyist-level CNC machines is real and growing. In addition to the author’s own site, a Google search on "cnc for the home" will turn up many other sites dedicated to this new market, including solsylva.com, homecnc.info, cnczone.com, hobbycnc.com, ktmarketing.com/CNC.html, and more. Articles about CNC for them home can be found on Make Magazine’s website (makezine.com), and at Engadget.com. CNC technology is becoming affordable for the average person, and the many creative people who like to design and build things are taking notice and jumping onto the CNC bandwagon.  Fanuc CNC Custom Macros: Programming Resources For Fanuc Custom Macros B UsersAn invaluable companion to the author’s best selling CNC Programming Handbook, this book is a general introduction to the subject of macros (known as Custom Macros or User Macros). Its purpose is to make you aware of what macros are, how to develop them, and how to use them effectively. It also explores important related subjects and identifies several other helpful topics in this increasingly important and exciting field of CNC programming. Offers many practical do’s and don’ts while covering all the popular Fanuc control systems exclusively. Provides the basis for exploring in great depth the extremely wide and rich field of programming tools that macros are. Numerous examples and sample programs are used throughout that serve as practical applications of the techniques presented and as the basis of ready-to-run macro programs. Includes a CD containing all of the sample programs. 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