What Is CNC Machining? An Overview of the CNC Machining Process

Computer Numerical Control (CNC) machining is a manufacturing process in which pre-programmed computer software dictates the movement of factory tools and machinery. The process can be used to control a range of complex machinery, from grinders and lathes to mills and CNC routers. With CNC machining, three-dimensional cutting tasks can be accomplished in a single set of prompts.

The CNC process runs in contrast to — and thereby supersedes — the limitations of manual control, where live operators are needed to prompt and guide the commands of machining tools via levers, buttons, and wheels. To the onlooker, a CNC system might resemble a regular set of computer components, but the software programs and consoles employed in CNC machining distinguish it from all other forms of computation.

How Does CNC Machining Work?

When a CNC system is activated, the desired cuts are programmed into the software and dictated to corresponding tools and machinery, which carry out the dimensional tasks as specified, much like a robot.

In CNC programming, the code generator within the numerical system will often assume mechanisms are flawless, despite the possibility of errors, which is greater whenever a CNC machine is directed to cut in more than one direction simultaneously. The placement of a tool in a numerical control system is outlined by a series of inputs known as the part program.

With a numerical control machine, programs are inputted via punch cards. By contrast, the programs for CNC machines are fed to computers through small keyboards. CNC programming is retained in a computer’s memory. The code itself is written and edited by programmers. Therefore, CNC systems offer far more expansive computational capacity. Best of all, CNC systems are by no means static since newer prompts can be added to pre-existing programs through revised code.

Why are CNC machined aluminum parts popular in manufacturing?

Aluminum is a choice of material for many manufacturers across the globe. Because of its excellent machinability and other characteristics, it is the preferred option for different applications. Aluminum also offers interesting mechanical and thermal properties. Besides, Aluminum is relatively easy to shape and can be drilled and milled effortlessly. Aluminum alloy is used more as compared to other low-weight metal materials. Aluminum is also an ideal material for prototypes.

Benefits for CNC machined aluminum parts

(1)Easy to bend

The main characteristic of Aluminum is that it can easily bend. This particular reason makes Aluminum the best option for CNC machining operations. Unlike steel, it can be turned into many different shapes during the machining process. The thickness of Aluminum makes it the best option for many molding methods. You can achieve a distinct structure by pressing and processing the Aluminum through CNC machining.

(2)Easy to process

Aluminum has many features that make it stand out when it comes to CNC machining materials. Just like its machining capability. Aluminum can be processed through different CNC machining operations such as punching, drilling, folding, etc. The Aluminum can be transferred into different forms and shapes. It takes low energy in machining as compared to the machining of steel.

(3)Low-temperature resistance

Steel parts can be delicate in low-temperature environments and especially in welding. Aluminum materials are resistant to low temperatures. It can be easily machined in low temperatures as compared to steel material.

Brass and Copper Parts in CNC Machining

machining brass

As we mentioned before, brass provides advantageous properties that make it an ideal option for a variety of applications. Why is that? When it comes to CNC machining, there are a few fundamental properties that make brass and copper parts ;outstanding.

The first one is the overall machinability. In simple terms, this property refers to how easy it is for the material to be machined. Brass is one of the easiest materials to machine. While many consider free-machining steels the comparison baseline for machinability, brass alloys generally have better machinability.