What are the advantages of CNC machining compared to traditional machining?

Aug 01, 2022

CNC machining is a widely used machining technology in modern industrial manufacturing. It has gradually replaced the machining of ordinary machine tools. CNC machining is required in terms of manufacturing technology, precision, complex part shape, production efficiency, operation safety, and quality of manufactured parts. Comprehensively surpassing traditional ordinary machine tool processing, this paper introduces the advantages of CNC machining compared to ordinary machine tool processing in detail.

CNC machining


Table of contents:

  • What is CNC machining

  • What is traditional machining

  • CNC machining advantages

  •     Flexible processing capabilities

  •     High machining accuracy

  •     high productivity

  •     complex machined parts

  •     Stable processing quality

  •     Safe processing

  •     Small batch production

  • Disadvantages of CNC machining

  • CNC machining applications

  • in conclusion

  •     Advantages of CNC machining over traditional machining


What is CNC machining?

CNC machining refers to a process method for machining parts on CNC machine tools. For example, the process rules of CNC machine tools are generally the same as those of traditional machine tools, but there have been significant changes. CNC machining methods use digital information to control the displacement of parts and tools. CNC machining is usually divided into CNC milling and CNC turning. It is an effective way to solve various parts, small batches, complex shapes, high precision, and other problems and achieve efficient and automatic processing.

CNC turning

What is traditional machining?

General machining refers to power-manufactured mechanical devices, often used to precision cut metal to produce other machines or machined metal parts. Machining is simply referred to as machining, which refers to "traditional" machining processes such as turning, boring, drilling, milling, broaching, sawing, shaping, planing, reaming, and tapping. In these "traditional" or "conventional" machining processes, machine tools such as lathes, milling machines, drill presses, or other equipment are used with sharp cutting tools to remove material to achieve the desired geometry.

CNC milling


CNC machining advantages:

1. Flexible processing capacity

CNC machining has a very flexible production capacity to manufacture custom machined parts. A CNC machine can be completely reprogrammed in a short amount of time to produce a completely different product. This allows them to quickly manufacture one part into another. In addition, they can store past programs that can be pulled out and used at any time, which gives it the flexibility to order large and small quantities.

2. High machining accuracy

Numerical control of digital templates and automatic machining virtually eliminates human error and achieves accuracy within 1/1000th of a part. Controlled by a precisely programmed computer system, CNC machining tools are processed according to instructions in digital form without human intervention, eliminating operator-made errors. In addition, when designing and manufacturing CNC machine tools, many measures have been taken to make the mechanical components of CNC machine tools achieve higher precision.

3. High production efficiency

Unlike traditional machining, CNC machines can run 24/7 as needed. They only stop working when maintenance or repair is required. As long as you perform routine maintenance checks, these machines will run flawlessly continuously. CNC machines also work much faster than humans. Because they are faster and do not require breaks, CNC machining has exceptionally high productivity.

4. Complex machined parts

CNC machining produces complex surfaces that are difficult to process with conventional methods. Computer-aided design (CAD) software is used to create the 3D design of the final assembly. Once entered into the CNC machine's computer, the machine can cut the product out of the material to exact specifications. Components of complex shapes can be easily created without taking too much time.

5. Stable processing quality

Because CNC drilling machines are controlled by computer-programmed software, once a design is entered into this computer, the same part can be produced with the same precision time and time again. No human intervention is required during the CNC machining process, allowing the production of parts with consistent quality. You can even regularly update and improve the software that powers these computers, further improving consistency and reliability.

6. Safe processing

First, CNC machining saves lives. The operator of the CNC machine is safely isolated from all sharp parts by a special protective structure. He can still see what's going on in the machine through the glass, but he doesn't need to go anywhere near the mill or the spindle. The operator also does not have to touch the coolant. Depending on the material, some liquids may be harmful to human skin.

7. Small batch production

The production efficiency is higher in the case of multi-variety and small batch production, which can reduce the time for production preparation, machine tool adjustment, and process inspection, and reduces the cutting time due to the use of cutting amount.

CNC machining center

CNC machining applications

The performance of CNC machining is better than that of ordinary machine tools. Parts with complex shapes and high precision requirements, it is widely used in aviation, shipbuilding, automobile manufacturing, mold manufacturing, automated industrial equipment, robot parts, precision instrumentation equipment, Medical equipment, light industrial equipment, and mechanical equipment.

Disadvantages of CNC machining:

1. CNC lathe processing has lower requirements on the quality of operators and higher technical requirements on maintenance personnel.
2. The machining route of CNC machine tools is not easy to control, and it is not as intuitive as ordinary machine tools.
3. The lathe is inconvenient to maintain and has high technical requirements;
4. The machining process of CNC lathes is not easy to control.


in conclusion

Advantages of CNC machining over traditional machining

After years of development of CNC manufacturing technology, modern CNC machining has comprehensively surpassed traditional ordinary machine tool processing in terms of manufacturing technology, precision, complex part shape, production efficiency, operation safety, production cost control, and surface roughness of parts, and quality of manufactured parts. If you have metal and plastic parts processing, small batch parts production, and prototype parts manufacturing, it is recommended that you use CNC machining parts, which can not only process complex parts but also process precision parts prototypes.