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In modern precision machining applications, CNC machining has undeniable importance, mainly because it has been developed over the years to adapt to technological trends. Even though lathes are the traditional choice for metalworking processes, they are time consuming and accuracy is always an issue. Over the years, various CNC machining processes have become more and more popular.

CNC turning and milling are now two popular applications in several manufacturing companies across a wide range of industries. CNC turning and milling services are, of course, accurate, fast and less labor-intensive. This article gives an in-depth introduction to these two important precision machining processes.

What is CNC machining and why is it so popular?

Computer numerical control (CNC) machining is a modern machining technique that is considered an excellent alternative to traditional lathe operation. Traditional lathe operation is time consuming, requires attention to detail to obtain accurate measurements, and is prone to human error. CNC processing involves less manpower and extensive computational and programming intelligence.

In this process, the computer digital code is written by a NC programmer/developer with the help of a functional expert and set up to run in the NC machine tool operating system. The code is written according to the different features to be machined on the workpiece. This means that the features and their dimensions are encoded and run on the CNC system to obtain the desired objects. CNC machines are used to perform such tasks as drilling, turning and milling.

What is CNC turning?

Is a machining process similar to the lathe turning process, the only difference is that the CNC turning process does not require continuous assistance from an operator. Operators can set up codes and workpieces that can rely on CNC machines. In this CNC turning process, the workpiece is mounted on a rotating chuck in which the single-point cutting tool is fixed to the tool rest and the motion of the tool handle is biaxial on the X and Y axes. This means that the tool is limited to horizontal and vertical movements.

The chuck is rotating, that is, the workpiece rotates. As mentioned earlier, the CNC turning process is carried out using a single point cutter, similar to the cutter used in turning. The CNC code itself covers tool inclination and operating distance.

It has been recorded that the CNC turning process is three times faster than the traditional turning process. Because of the accuracy of size, it is specially called precision machining process. This process is used to manufacture lead screw, cylinder, piston, milling shaft and other products.

What is CNC milling?

CNC milling is a material removal technique that uses rotating tools. In this CNC milling process, the workpiece is stationary. The tool can be moved along the X, Y, and Z axes, which makes the process superior. CNC milling also involves the milling operation code to be set up and run in the CNC operator system. CNC milling is often used to create complex shapes with complex detail requirements. Because of the three-axis motion of the milling cutter, the NC milling process can be effectively used for prototyping. Unlike conventional milling, CNC milling is up to scratch. Complex features can be easily created during CNC milling. It does not require full-time assistance from an operator and, according to records, the process takes a third of the time compared to conventional milling.

CNC milling technology is widely used in automobile parts manufacturing, aviation products manufacturing, prototype making and so on.

What's the difference between CNC turning and milling?

Although the results of CNC turning and milling processes are completely different from each other, metalworkers can be confused during these processes due to the co-use of CNC. The difference of CNC milling process is as follows.

CNC turning uses a single point cutter, while CNC milling uses a rotary cutter.

CNC turning tool feed directions are limited to the X and Y axes, while CNC milling tools have a three-way feed stroke.

CNC turning is usually used to create simple cylindrical or conical objects. CNC milling, on the other hand, has no shape or size restrictions and can be used for complex parts.

CNC turning is mainly used to cut round bars. CNC milling uses rectangles, squares, and plates as workpiece configurations.

Because CNC turning and milling are sophisticated and complex processing techniques, it is important to obtain service from a trusted company. Xiehe is a CNC machine shop that provides these services on a professional industrial scale. For more than 30 years, it has been serving aerospace CNC machining, automotive CNC machining, Marine CNC machining and other fields. Therefore, if you need precision CNC turning and milling services, Xiehe is the company you can rely on.