CNC stands for computer numerical control and these machines play an important role in the manufacturing industry. These complex machines are controlled by a computer and provide a level of efficiency, accuracy and consistency that would be impossible to achieve through a manual process. Operations that were impossible years ago are now easy thanks to CNC machining. Just as there are many different parts that CNC machines can make, there are also various types of CNC machines used to accomplish this. Each machine differs in construction, the way they operate and the types of product they can make.
Different types of commonly used CNC machines
• CNC Milling Machine
One of the most common types of CNC machines, a CNC mill utilizes computer controls to cut various materials. Mills can translate specific programs of numbers and letters in order to move the spindle in various ways. A CNC mill is very large compared to other tools and can be quite costly. Some CNC milling machine manufacturers include Okuma, HAAS and DMG Mori.
• CNC Lathe
A lathe is a CNC machine that functions to cut work pieces as they are rotated. CNC lathes can make precise cuts quickly by using various tools. These CNC machines are quite effective in the precision they offer compared to manual lathes. They often have fewer axes than CNC milling machines, and are therefore smaller in size and more compact.
Benefits of CNC Machining
• The accuracy of the CNC machine ensures consistent product quality – The process is more precise than manual machining and can be repeated in exactly the same manner over and over again.
• Increased production speed and increased efficiency – Computers are used to control the machines, the process is automated therefore increasing speed and quality of manufacturing. Considering machines do not tire or need breaks it makes it more efficient than manual machining.
• One of the main advantages for the operators of CNC machines is safety – Using CNC machines are much safer than manually operated machines as they work behind a guard or even a closed, transparent safety door.
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