If you’re looking to have parts machined, one option you may consider is (CNC) computerized numerical control turning. But what exactly is computerized numerical control? In this guide, we’ll answer that question and give you an overview of everything you need to know about CNC turning.
What is computerized numerical control?
Computerized numerical control is a computer-controlled machining process used to create cylindrical parts. The process begins with a block of raw material (known as a workpiece) mounted on a rotating chuck. A cutting tool is then fed into the workpiece, and the machine removes material from the workpiece to create the desired shape.
What shapes can be created with computerized numerical control turning?
Computerized numerical control can be used to create a variety of shapes, including cones, cylinders, and spheres. However, a cylinder is the most common shape created with computerized numerical control.
When to use computerized numerical control?
Computerized numerical control is well-suited for the high-precision creation of small to medium-sized parts. The process is also relatively quick, making it a good choice for applications where time is a factor. Below are some of the cases you need to use computerized numerical control.
1. When you need to produce parts with a high precision level.
If you need to create parts that require a very high level of precision, such as medical devices or electronic components, computerized numerical control is likely your best option. The process can produce parts with tight tolerances (i.e., the allowable deviation from the desired dimension).
2. When you need to create complex shapes
If you need to create parts with complex shapes, such as those with multiple contours or curves, computerized numerical control may be the right choice. The process gives the operator greater control over the cutting tool, which allows for more precise machining of complex shapes.
3. When time is a factor
As we mentioned earlier, one of the benefits of computerized numerical control is that it’s a relatively quick process. Computerized numerical control is often the best option if you need parts quickly.
4. When you need to produce large quantities of parts
If you need to make many parts, computerized numerical control can be a good option because it’s relatively easy to set up the machine to produce multiple copies of the same part. That is because the process is computer-controlled, so once the program is created, it can be easily replicated.
5. When you need to produce parts with a high degree of repeatability
If you need to produce parts that are identical or very similar (i.e., have a high degree of repeatability), computerized numerical control can be a good choice. That is because, as we mentioned earlier, the process is computer-controlled, so once the program is created, it can be easily replicated.
6. When you need to machine parts made from difficult-to-machine materials
Computerized numerical control can be a good option if you need to machine parts made from difficult-to-machine materials, such as stainless steel or titanium. That is because the process allows specialized cutting tools to handle these materials.
7. When you need to produce parts with a smooth surface finish
Computerized numerical control can be a good option if you need to create parts with a smooth surface finish. That is because the process leaves a smooth surface on the work
Effects of speed on computerized numerical control
The speed of the CNC machine has a significant effect on the quality of the machined part. If the speed is too slow, it can cause the cutting tool to overheat and damage the material. If the speed is too fast, it can cause the cutting tool to chatter and produce an inferior surface finish. Therefore, it’s essential to choose the right speed for your application.
Materials used in computerized numerical control
A wide variety of materials can be machined with computerized numerical control, including metals (steel, aluminum, brass), plastics (acrylic, polycarbonate), and composites (fiberglass, carbon fiber). In most cases, the choice of material will be dictated by the intended use.
Bottom line
CNC turning control is an excellent option for the high-precision creation of small to medium-sized parts. The process is also relatively quick, making it a good choice for applications where time is a factor. Computerized numerical control may be the right choice for your application if you must produce parts with tight tolerances, complex shapes, or a smooth surface finish.
