Advantages and Disadvantages of computer numerical control

Advantages

• It can produce jobs with the highest accuracy and precision than any other manual machine.
• It can be run for 24 hours a day. It has higher flexibility and consistent quality. 
• The parts produced by it have the same accuracy. There is no variation in the parts manufactured by a CNC machine. They increased productivity and operation safety.
• A highly skilled operator is not required to operate a CNC machine. A semi-skilled operator can also operate accurately and more precisely.
• Operators can easily make changes and improvements and reduce the delay time.
• It can produce complex designs with high accuracy in the minimum possible time. They reduced scrap rate, nonproductive time, nonpower, load time. Performed reliable operations
• The modern design software, allows the designer to simulate the manufacturer of his/her idea. And this removes the need of making a prototype or model and saves time and money.
• Fewer workers are required to operate a CNC machine and saves labor costs.

Disadvantages

• Despite having so many advantages, a CNC machine has some disadvantages too and there are:
• The cost of the CNC machine is very high as compared with manually operated machines. 
• The parts of the CNC machine are expensive. 
• The maintenance cost in the case of CNC is quite high
• It does not eliminate the need for costly tools.
• They have costly setup and skilled operation.
• Required computers and programming knowledge.
• Their maintenance is difficult.
• Machines have to be installed in air-conditional places.