COMPUTER NUMERICAL CONTROL PROGRAMMING BASICS

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COMPUTERNUMERICALCONTROLPROGRAMMINGBASIC SA Primer for theSkillsUSA/VICAChampionshipsSteve Krar Arthur GillDistributed to educational administrators,instructors, students, and apprentices with the compliments of INDUSTRIAL PRESS, of MACHINERY S HANDBOOK The Bible of the machine Trades ComputerNumericalControlProgrammingBasic sSteve Krar Arthur GillThis book is not intended for sale under any PRESS Madison Avenue, New York, NY 10016CONTENTSSECTIONPAGEForeword1Preface 7Cartesian Coordinate System7Machines using CNC9Programming Systems11Point-to-Point or Continuous Path13Point-to-Point Positioning14Continuous Path (Contouring)15Interpolation15Programming Format17Programming for Positioning23Work Settings and Offsets26CNC Bench-Top Milling and Turning Centers30CNC PROGRAMMING Hints Milling32Milling and Drilling Programming34CNC PROGRAMMING Hints Turning38Fanuc Compatible Programming39Turning Programming407The term NUMERICAL CONTROL is a widely accepted and commonlyused term in the machine tool industry.

Machines Using CNC Early machine tools were designed so that the operator was standing in front of the machine while operating the controls. This design is no longer necessary, since in CNC the operator no longer controls the machine tool movements. On conventional machine tools, only about 20 percent of the time was spent remov-ing material.

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