What are the advantages and disadvantages of CNC machining?
2021-08-03

What are the advantages and disadvantages of CNC machining?

With the development of the manufacturing industry, many precision parts are now processed by CNC. So why is CNC machining so popular? Because CNC machining is not only easy to operate but also has a good machining effect.


Advantages of CNC machining:

1. CNC can be processed automatically

CNC machining usually refers to precision machining controlled by a computer. Therefore, it can be controlled by the program instructions of the CNC machine tool, and the entire machining process is carried out automatically according to the program instructions. The high degree of automation of the machine tool greatly reduces the labor intensity of the workers.

At present, many CNC machine tools can run unattended during the entire processing cycle, allowing the operator to free up time for other tasks. This brings some side benefits to CNC users, including reduced operator fatigue, reduced errors caused by human error, and consistent and predictable machining time for each workpiece.


2. CNC machining accuracy is high

The second major advantage of CNC technology is the consistency and accuracy of the workpiece. The typical accuracy of today's CNC machine tools has reached two thousandths to four thousandths of an inch or 0.05 to 0.10 mm, and the repeatability is close to or better than eight-thousandths of an inch or 0.02 mm. This means that once the program is verified, two, ten, or a thousand identical parts can be easily produced with the same accuracy and consistency. Mass production can be realized, and product quality is easy to control.


3. CNC machining flexibility is strong

Since computer programs, running different workpieces run these machines is as easy as loading different programs.

This also brings another benefit, namely fast conversion. Since these machines are very easy to set up and run and can easily load programs, their setup time is very short.


4. CNC machining efficiency is high

CNC machining can carry out multi-coordinate linkage and can process complex zero points. When the shape and size of the part need to be changed, only the NC program needs to be changed, saving production preparation time.

 

5. Complicated profile can be processed

It can process complex profiles that are difficult to process by conventional methods and even process some unobservable processing parts.

 

6. High production efficiency

In the case of multi-variety and small batch production, the production efficiency is higher, and the time for production preparation, machine tool adjustment, and process inspection can be reduced. The cutting time can be reduced due to the use of the best cutting amount.


CNC machining also has some disadvantages

1. Higher technical requirements for operators and machine maintenance personnel

 

2. The CNC machining route is not easy to control, and it is not as intuitive as standard machine tools.

 

3. The purchase cost of machine tool equipment is more expensive.


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