Chapter 1

G-Code is the fundamental language of CNC Programming and this is the ultimate guide to CNC G-Code Programming. It will sharpen your skills so that you’re a great CNC G-Code Programmer by covering topics from basic CNC Programming all the way through to advanced topics such as Macro B programming. Oct 19, 2005 Best image to G code software If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you. 70+ channels, more of your favorite shows, & unlimited DVR storage space all in one great price.

What is CNC Programming and how can it help you?

Chapter 2

G-Code Standards and Dialects: What’s different; what’s the same?

Chapter 3

CNC Coordinates: Learn to do what manual machinists do on your CNC machine

Chapter 4

G-Code Cheat Sheets and CNC Programming Secret Weapons

Chapter 5

Get Productive with CNC Programming Software

Chapter 6

Get Your CNC Machine Ready to Run Your Program

Chapter 7

Jedi CNC Programming Topics, Techniques, and Resources

Resources

Complete list of Fanuc and Haas G-Codes with Examples

Quick examples to give you a feel for g-code.

Extended Resource List

Chapter 1 What is CNC Programming and how can it help you?

What is CNC Programming?

CNC Programming (Computer Numerical Control Programming) is the art of programming CNC machines to make parts. A CNC Program is a text file that contains g-code. If you’re a professional who spends most of their time doing CNC Programming, your job title is probably CNC Programmer.

What is G-Code?

G-Code is the language used to control CNC machines. It’s one type of CNC programming that CNC programmers use, the other type being CAM programming. CAM programs will generate g-code from a CAD drawing, but the end result is still g-code.

Your machine’s CNC controller probably executes g-code, although there are other possibilities–Heidenhain, Mazak, Shopbot, 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.

What are the different methods of CNC Programming?

CNC Machines are programmed using one of three methods:

CAM Software
Conversational Programming
G-Code Programming

Often, it’s advantageous to use multiple methods together. For example, you might create an initial CNC program using CAM Software and then edit the g-code from the CAM Software using G-Code Programming to make the program manufacture a part faster.

Why should I learn CNC Programming?

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:

Ibrasoftware pes 2018. 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 if you want your skills to be on part with others.

CNC Programming can be a valuable skill to possess. According to Glass Door, CNC Programmers receive an average salary of $54000/year. Compare that to CNC Machine Operators that get $42,000/year and CNC Machinist’s who get $42,000/year.

Being a proficient CNC Programmer can boost your income pretty substantially based on those numbers.

Learning Conversational Programming is a start. Picking up Conversational CNC along with some MDI work will soon make you as productive if not more productive than a manual machinist on a manual machine.

Getting good with CAM Software is even more important. You’ll be able to create parts that are just not possible to do manually, or that would take too long to be worth doing.

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But being a capable g-code programmer able to tackle macros and such is the final rung on the ladder. It may come as a surprise to most CAM users, but there are many things a g-code programmer can do that simply aren’t possible with CAM. In general, G-Code Programming is ideal for these kinds of tasks:

Simple parts can be easier with g-code than CAM. You want a rectangular cover plate with 4 holes in it. If you’re proficient with g-code you’re done before you can create a CAD model, run it through CAM, get the gcode onto the machine, and run it. With Conversational CNC, you don’t even have to be proficient at g-code. For all those cases where you thought manual machining was faster, g-code or Conversational CNC will make the CNC machine an even better choice.
Getting a Second Opinion on Your CAM Code. Even expensive CAM software can have bugs. Or, if they’re not strictly speaking bugs in the CAM, they may be problems with the post-processor. With just a little bit of knowledge about GCode and the help of a GCode Simulator, you can get a second opinion on the CAM-generated GCode and fix minor errors before you have to discover them on the machine.
Specialized or Downstream Tasks that Complement CAM. As great as they are, CAM programs don’t do everything. There are many specialized tasks that are difficult or impossible to do with CAM. In addition, there are downstream tasks–things that come up when the job is actually on the machine that weren’t contemplated by the CAM or Post. Sometimes these tasks are relegated to GCode because the CAM software won’t do them. Sometimes it’s because the CAM is aiming at a generalized common denominator and something special comes up on the Shop Floor–for example, a slightly different cutting tool has to be used while we wait for another shipment of the normal tools. A simple feeds and speeds change in the gcode will handle it far faster than re-running the CAM, assuming we’re capable of making such simple changes.

For even more details on those special tasks that complement CAM, check out 37 Things CAM Won’t Do For You That G-Code Programming Can.

What’s the Best Way to Learn G-Code?

The best way to learn G-Code is slow and steady.

Find yourself a complete course like this one, start knocking out the lessons, work the exercises, and keep at it. Work at your own pace, and don’t move on to the next lesson until you’ve worked the exercises and understand the material.

Working the exercises is a whole lot easier if you’ve got some software to help you play with g-code. That’s what our G-Code Editor software is all about. It simulates g-code as well as decoding it for you. You can try out different g-codes and see visually what they do. Experimenting is one of the best ways to get a good grasp of g-code. At the end of each section is a Quiz to test your skills. Take the quiz and use the links on the questions to go back and review anythin

Free G Code Images