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CNC TIPS

CNC TIPS

Introduction to CNC Programming, Chapter 10, Modal Commands and the Safe Start Line
Introduction to Modal G codes vs One-shot or non-modal G and M codes.   Also introduces to concept of the safe start line. Ebook: 7 Easy Steps to CNC Programming . . . A Beginner’s Guide This brief video only mentions the G17, G40, G80 as the commands used for a safe start line.  Other […]

Introduction to CNC Programming, Chapter 9: G and M codes used to make cribbage board
This is a first look at the G and M codes that will be used to make the cribbage board. See Also: Common G Codes for Milling: G00, G01, G02 and G03, G83     Ebook: 7 Easy Steps to CNC Programming . . . A Beginnter’s Guide

Introduction to CNC Programming, Chapter 8- Laying out tool locations.
When you have picked your tools and have selected the best place for the program origin or work coordinate system, now it is time to lay out the center points for all the tool moves. Ebook: 7 Easy Steps to CNC Programming . . . A Beginnter’s Guide

Introduction to CNC Programming, Chapter 7, Coordinate Systems
There 3 coordinate systems you need to be aware of when programming CNC Machines, machine, work and part.  This is a brief discussion of each. Ebook: 7 Easy Steps to CNC Programming . . . A Beginnter’s Guide

Introduction to CNC Programming Chapter 6, 2 Rules
A brief discussion of 2 important rules to keep in mind when programming a CNC machine.   Ebook: 7 Easy Steps to CNC Programming . . . A Beginnter’s Guide

Introduction to CNC Programming, Chapter 5 -Documentation
Save time and money documenting your work. Ebook: 7 Easy Steps to CNC Programming . . . A Beginnter’s Guide

Introducton to CNC Programming Chapter 4 Cartesian Coordinates
The first and most important concept a person needs to know to program CNC machines is that of rectangular and/or Cartesian coordinates. This video covers the very basic concepts of point, line and plane geometry and rectangular coordinates. If you already know this stuff, you may want to just skip this video. Ebook: 7 Easy […]

Introduction to CNC Programming, Chapter 3, The 7 Steps
First we take a very high level view at the 7 basic steps a CNC programmer should take when creating an NC/CNC program. Note: the machines are CNC (Computer Numerically Controlled) but the language they actually speak is the NC (Numerical Control) language. Ebook: 7 Easy Steps to CNC Programming . . . A Beginnter’s […]

Introducton to CNC Programming Chapter 2 Why Program a Cribbage Board
Why I chose a cribbage board for an NC programming subject. Even a very simple part can teach a great deal about the process of creating an NC/CNC program. Ebook: 7 Easy Steps to CNC Programming . . . A Beginnter’s Guide

Introduction to CNC programming video – Chapter 1
I have created a number of videos on some basic CNC programming concepts, this is the first.  Others will be coming along soon so keep checking.     Ebook: 7 Easy Steps to CNC Programming . . . A Beginnter’s Guide
You're invited!
Join our small, unique community of CNC machine professionals. We understand how to program Numerical Control (NC) and Computer Numerical Control (CNC) machines. 

You too can easily learn CNC Programming. There is no reason for you to be on the outside looking in. For less than $10, you can move from being a button-pusher to be a true NC/CNC professional.
 
The more you know,  the more you can earn . . .
the more you can enjoy your work. 

 
By now, you've probably seen or heard of our best selling books on CNC Programming and BobCAD.

Now all CNC Programming and BobCAD/CAM books are available in convenient spiral bound copies and electronic .pdf format for immediate download or email delivery.  
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    7 Easy Steps to CNC Programming . . . A Beginner's Guide                 7 Easy Steps to CNC Programming, Book II                  7 Easy Steps to BobCAD . . . A Beginner's Guide

 
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CNC Fast Facts

CNC Fast Facts

Below are some interesting facts about CNC machines and programming.

  1. CNC is an acronym for Computer Numerical Control.
  2. NC is an acronym for Numerical Control.
  3. NC (Numerical Control) started its evolution in the late 1940s.  In 1952 MIT introduced the first NC machine.
  4. Early NC machines had no computers or calculating ability.  It was not until 1970 that on-board processing became possible and the machines were transformed from NC machines to CNC machines.
  5. The development of the CNC control opened the door for features like canned cycles, sub programming, tool length compensation, tool diamater and radial compensation.
  6. NC / CNC G Codes are referred to as preparatory codes.  They prepare the machine to perform a function like rapid travel G0 / G00,  make linear cutting moves G1 / G01,  cut arcs G2 / G02 or G3 / G03, perform drilling and automated, etc.
  7. NC / CNC M codes are miscellaneous codes.  CNC M codes basically perform on / off functions like stop processing of CNC code M0 / M00, turn the spindle on M3 / M0 or M3 / M03, stop the spindle M5 / M05, turn coolant on M8 / M08, and so on.
  8. The ANSI standard for G code and M code programming is ANSI/EIA 274D-1988.
  9. The ISO standard for G code and M code programming is ISO 6983.
  10. There is a new standard ISO 14649 aka the STEP-NC standard that addresses NC / CNC programming using the enhanced features of CAD/CAM software.
  11. Machine tool builders are not required to adhere to standards and ocassionally create variations to standard G codes and M codes.
  12. Most but not all CNC G codes are modal (stay active until changed) but not all of them. 
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