Transcription of COMPUTER NUMERICAL CONTROL PROGRAMMING BASICS
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COMPUTER NUMERICAL CONTROL PROGRAMMING BASICS
COMPUTERNUMERICALCONTROLPROGRAMMINGBASIC SA Primer for theSkillsUSA/VICAC hampionshipsSteve 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 10016 CONTENTSSECTIONPAGEF oreword1 Preface7 Cartesian Coordinate System7 Machines Using CNC9 PROGRAMMING Systems11 Point-to-Point or Continuous Path13 Point-to-Point Positioning14 Continuous Path (Contouring)15 Interpolation15 PROGRAMMING Format17 PROGRAMMING for Positioning23 Work Settings and Offsets26 CNC Bench-Top Milling and Turning Centers30 CNC PROGRAMMING Hints Milling32 Milling and Drilling Program
When points are located on a workpiece, two straight intersecting lines, one vertical and one horizontal, are used. These lines must be at right angles to each other, and the point where they cross is called the origin, or zero point (Fig. 1) Fig. 1 Intersecting lines form right angles and establish the zero point (Allen-Bradley)
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