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 CNC Solutions
For The Experimenter
by David Benson







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    Copyright 2007
    Square 1 Electronics
    This page last updated
    March 25, 2007




    • Square 1 Electronics announces its new book by David Benson, "CNC Solutions For The Experimenter."   The complete table of contents follows.

    Please note: This book is available only from us or from select machine shop suppliers. It is not available in bookstores.

    This book was written by David Benson (8-1/2 x 11", 72 pages, comb bound, 19.95.)



    CNC Solutions
    For The Experimenter

    Table of Contents

  • INTRODUCTION

    For experimenter (hobbyist) or student
    Overview of topics covered in book

  • G-CODE INTERPRETER SOFTWARE

    Overall considerations
    Software selection decision making
    Computers - what is slow vs. fast?

  • CNC MACHINE OPERATION

    Generic CNC machine and G-code interpreter
    On-screen user interface
    Jogging
    Rapid height
    Tool library
    Running G-code files
    E-stop and limit switches

  • DeskCNC G-CODE INTERPRETER AND CONTROLLER

    DeskCNC features
    Controller Connections
    Using a DeskCNC serial controller to control a CNC machine
    designed to interface with a PC parallel printer port
    Software setup procedure
    DeskCNC setup
    Machine setup
    Machine velocities setup
    Tool/sensor/probe setup
    Jogging setup
    Machine operation
    DeskCNC advanced features
    Auxiliary outputs
    Control panel/window features

  • ELECTRICAL AND ELECTRONIC DESIGN CONSIDERATIONS

      System block diagram
      G-code interpreter control and monitoring functions
      Serial port interface
      Stepper motor translator/drivers
      Unipolar vs. bipolar
      Resonance
      Higher than rated voltage operation - chopper drivers
      Microstepping
      HobbyCNC unipolar microstepping chopper translator/driver
      Xylotex bipolar microstepping chopper translator/driver
      Geckodrive unipolar or bipolar microstepping chopper translator/driver
      Other translator/drivers
    Servo motor drivers
    Stepper motor power supply - linear unregulated
    +5 volt logic power supply
    Limit and emergency stop switches
    Home switches
    Single box commercially available electronics with motors

  • STEPPER MOTORS FOR CNC APPLICATIONS
      Torque #1
      Steps/rev
      'Bout right engineering
      Stepper motor terminology
      Coil vs. winding vs. phase
      Unipolar vs. bipolar
      Stepper motor types
      Stepper motor physical sizes
      NEMA size 23
      NEMA size 34
      Approximate motor torque specs
      Servo motors with shaft encoders
      Mounting stepper motors
      Heat dissipation
      Grabbing on to the shaft = mechanical connection
      Avoid damaging the shaft (clamp, flat, split hub)
      Shaft couplings - alignment, flex
      Avoid applying a thrust load to the shaft
      Steps per unit of travel
  • 3-AXIS MILL/ROUTER DEMONSTRATION MACHINE
      Mechanical design
      Electrical and electronic design
      DeskCNC serial controller
      PIC microcontroller translators
      MOSFET drivers
      Stepper motor linear power supply
  • MINI MILL CNC CONVERSION
      Mechanical design
      Electrical and electronic design
      DeskCNC serial controller
      HobbyCNC translator/driver
      Linear stepper motor power supply

  • SAFETY

  • APPENDIX A - Simple Unipolar Translator/Driver

  • APPENDIX B - Sources


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