What is CNC Machining?
CNC stands for Computer Numerical Control. CNC Machining is a process used in the manufacturing sector that involves the use of computers to control machine tools. People can control many tools in this manner. The tools include lathes, mills, routers, and grinders.
On the surface, it may look like a normal PC controls the machines, but the computer’s unique software and control console are what really sets the system apart for use in CNC machining.
Under CNC Machining, machine tools function through numerical control. A computer program is customized for an object and the machines are programmed with CNC machining language (called G-code) that essentially controls all features like feed rate, coordination, location, and speeds. With CNC machining, the computer can control exact positioning and velocity. CNC machining is used in manufacturing both metal and plastic parts.
Before machining, first, a CAD drawing is created (either 2D or 3D), and then a code is created that the CNC machine will understand.
The program is loaded and finally, an operator runs a test of the program to ensure there are no problems. This trial run is referred to as “cutting air”. And it is an important step because any mistake with speed and tool position could result in a scraped part or a damaged machine.
What are the advantages of CNC Machining?
For precision parts manufacturing, there are many advantages to use CNC Machining.
- First, it’s continuous and faster than manual machining.
- Secondly, the process is more precise and we can repeat it in exactly the same manner over and over again. Because of the precision possible with CNC Machining, this process can produce complex shapes that would be almost impossible to achieve with manual machining. CNC Machining is used in the production of many complex three-dimensional shapes. Because complex three-dimensional shapes need a high level of precision or very repetitive tasks.
