G28 is an important reference command in CNC machines. It returns the machine to its Home Reference Point. When a program finishes or a tool change is required, the G28 command moves all or selected axes (X, Y, Z) back to their original safe position. Operators also call this process a “zero return.” What is…
G75 is an excellent CNC group cycle, one of the best advantages of which is that this command does not require repeated code writing, but rather contains complete logic in a single command. This code is a great way to save time, protect the tool, and achieve better quality. G75 is typically used for radial…
The G72 Facing Cycle is an important programming command that is widely used in CNC lathes. This command smooths the surface of the workpiece by removing material to a certain depth. G72 is a very useful facing cycle, especially for circular profiles and medium-hard materials. It completes the facing operation by repeating the programmed tool…
Thread cutting on a CNC lathe is extremely important, and G76 is a multi-pass and widely used threading cycle. It is considered one of the precision machining operations.The G76 cycle is considered an ideal choice for not only external but also internal finish quality threading.With the help of the G76 threading cycle, the machine operator…
When we work on metal to give it a specific shape, we perform most operations using straight-line movements (linear interpolation). We use G-codes for these movements. When the design includes bends, circles, or arcs, we use G02 and G03 instead. It is very important for any machinist to understand these codes so that it is…
In the world of CNC (Computer Numerical Control) machining, G-codes are the language that tells a machine exactly how to move. While there are hundreds of codes, the “Big Four”—G00, G01, G02, and G03—handle about 90% of all motion commands. Understanding these is the difference between a perfectly machined part and a broken tool. 1….
Mastering G-code is like learning the grammar of manufacturing. While there are hundreds of codes, a small core group does 90% of the heavy lifting in CNC programming. Here is a breakdown of the top 20 G-codes every programmer should have memorized, categorized by their function. 1. Motion Codes (The “Big Three”) These codes tell…
CNC machines operate with the help of special programming languages that tell the machine what to do, where to move, and how to perform operations. Among these languages, G-Code and M-Code are the most important and commonly used. Many beginners in CNC machining often ask:What is the difference between G-Code and M-Code?Although both are essential, they serve very different purposes in CNC…
For this example, we’ll program a basic stepped shaft on a CNC lathe using Fanuc-style G-code. Assume the following specifications: This is a complete, self-contained program. Note that actual code may vary slightly by machine control (e.g., Fanuc, Haas), so test in simulation first. The roughing uses G71 (stock removal cycle), and finishing uses G70…
CNC programmers rely heavily on G-codes to control the movements and operations of a machine. G-codes, or “preparatory codes,” instruct the machine on actions such as linear and circular motion, tool changes, spindle control, and coolant activation. Among the most essential G-codes are G00 for rapid positioning, G01 for linear interpolation, G02 and G03 for…