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CNCCookbook's G-Code Tutorial and Course |
Looking to learn CNC G-Code? Need a quick and easy G-Code Tutorial or G-Code Course? Want some easy G-Code Training? Maybe you just want to learn more about a specific G-Code related topic or see particular G-Code examples. If so, you're in the right place with the CNCCookbook CNC G-Code Course. It's free, it's easy, and it's chock full of good information. This page is the syllabus. The articles are all listed below. There's no need to register, just get started learning at your own pace.
What is G-Code?
G-Code is the language used to control CNC machines. Your machine's CNC controller probably executes g-code, although there are other possibilities--Heidenhain, Mazak, and others have proprietary formats. Some machines with proprietary formats can also run g-code. It is the Lingua Franca (working language) of CNC.
In order to make a part on a CNC machine, you tell it how to make the part using a G-Code Program.
Why Learn G-Code?
Every CNC machinist should know g-code. If you're interested in CNC and machining, you should too.
We recently did a survey to assess the g-code skills of our readership. You should not be suprised to learn that many are quite proficient with G-Code:
We were impressed at how many readers can write g-code programs from scratch. In fact the overwhelming majority read, write, or tweak programs on a regular basis. If you're not yet able to do that, you need to learn. These articles are CNCCookbook's free course in g-code. No matter what stage in g-code learning you are at, you will find the tools to advance to the next stage in these articles. Check them out--it's easy to improve your g-code proficiency and well worth the productivity gains.
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Table of Contents |
Here are the articles available for maximizing your g-code proficiency.
Basics Every CNC Machinist Should Know
Introduction for Beginners: More on what you can do with g-code, basic concepts, and an interactive tool to help you learn faster.
The Coordinate System: Is it a right-handed or left-handed coordinate system?
G-Code Dialects, Post Processors, and Setting Up GWE: The great thing about standards is there are so many to choose from.
MDI: CNC For Manual Machinists: Pretend your CNC is just a manual machine with DRO's and Power Feeds on every axis.
CNC Editors: Tools of the Trade
CNC Simulators, Backplots, and Viewers: Getting a Second Opinion
Part Zero, Touch Offs, and Zeroing: Helping the machine understand where the part begins and ends.
Basic G-Code Program Structure: Blocks, sequence numbers, words, addresses, and the basic nuts and bolts of g-code line.
Linear Motion: G00 and G01: Moving your CNC in straight lines.
Circular Arcs: G02 and G03: Moving your CNC along arcs.
Running the GWE G-Code Simulator: Using a G-Code Simulator to view and debug your programs.
Relative vs Absolute Moves
Tool Changes and Preparatory Operations
Tool Lengths and Offsets
Basics for Turning and Lathe G-Coding
Intermediate
Canned Drilling Cycles
Work Offsets: Making multiple parts and fixtures easy
Precise Timing and Speed: Dwell, Constant Surface Speed, Exact Stop, Backlash Compensation
Lathe Canned Roughing Cycles: The Poor Man's Turning CAM
G71: Rough Turning Cycle: Type I
Using Mill CAM to Create Profiles for Lathe Cycles
G71 Type II: Rough Turning With "Pockets"
G70: Finishing Cycle
G72: Rough Facing Cycle
G73: Pattern Repeating Cycle
G76: Multiple Threading Cycle
Chamfering and Corner R for Lathe Programming
Tool Compensation: The Poor Man's Milling CAM
Tapping: Rigid tapping, programming tapping heads and tension compression holders
Helical Interpolation and Thread Milling: How to thread mill, NPT and tapered threads, When to thread mill instead of tapping
Polar Coordinates
Advanced
A Mini-Tutorial on G-Code Macro Programming and Fanuc Macro B:
Parameterized Programming: Macro Variables
Subprograms and Macros: Packaging G-Code Into Building Blocks
Macro Example: Digits (Work in progress)
Conditions and Looping: Making Decisions and Handling Repetition in G-Code. (Still a Work in Progress)
Modal Macro Calls
Scaling the Coordinate System
Rotating the Coordinate System with G68 and G69
Mirroring the Coordinate System
Reference Motions
Interacting With the World
In-Process Probing
Tweaking CAM Programs: Right Angle Heads and More
Resources
G-Wizard Editor: A CNC Programming Editor for g-coders and CNC G-Code Simulator. We use it in this course to help teach G-Code.
G-Wizard Calculator: A CNC Machinist's Calculator
G-Code Reference for Mills
G-Code Reference for Turning
Sample G-Code Files: G-Code examples you can download and play with
Try the Free Trial Version of G-Wizard G-Code Editor...
No credit card required--just your name and email.
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