When planning a CNC machining process there are many considerations and options to choose. From cutting tool selection to cutting parameters, the choices have a major effect on the end results. Here is what it might take to define a CNC toolpath:
Machining.Blog® is a weekly blog focused on manufacturing career development. It features blog articles on the fundamentals of manufacturing for aspiring machinists. Our goal is to create an interest in manufacturing in the USA. Our writer Matthew Schowalter has worked in manufacturing for 24 years, and he covers the topics that matter to someone starting their career in manufacturing.
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All tagged CNC Programming Basics
When planning a CNC machining process there are many considerations and options to choose. From cutting tool selection to cutting parameters, the choices have a major effect on the end results. Here is what it might take to define a CNC toolpath:
Each program has a program number, that should be different from other program numbers
Each line of code in a CNC program is called a “Block”. It contains G and M codes in it.
The block cannot have two M-codes in it
The ending of a Block has a End-of-Block symbol and it is a semi-colon. (Example: G1X.5; )
I recently had an opportunity to interview Phil Brown and Umair Riyas from NexGenCAM about how to begin a career in computer-aided manufacturing or CAM. They are applications engineers that specialize in CAM software. Phil and Umair have extensive backgrounds in CNC and CAM/CAD, they offer a few tips to others who may be interested in starting a career in the field.
Standard G-Codes for CNC Lathes
G0 - Rapid Movement
G1 - Linear Feed Movement
G2 - Clockwise Interpolation - Circular Movement
G3 - Counter Clockwise Interpolation - Circular Movement
G4 - Dwell
G9 - Exact Stop
G10 - Set Data
G17 - XY Machine Plane Selection