Explaining CNC Machining Centers18

Explaining CNC Machining Centers

Production facilities that run more than one CNC machine at a time are called CNC machining centers. These groups of CNC machines are called cells. These machines are capable of long production runs with no human supervision. Parts can be created and quality control done by the computer's lasers and sensors. Automatic processing machines have changed the manufacturing process and made material handling much easier. Large quantities of products that are high quality can now be created very quickly.

Prior to CNC, CNC machining centers used NC machines. NC stood for numerically controlled. Unlike CNC machines, the operating parameters could not be changed on a NC machine. NC machines were the basis for the first CNC machines. They used the hardware from the NC machines and the computer made calculations for tool compensation. CNC machines have improved significantly over the last decade. Now CNC machines have developed to the point that they can detect errors or machinery failure and place a call to the operator even if he/she is not on site, for example on a weekend. Some machines are even smart enough to choose another part and run it while waiting for the operator to correct the error in the program or replace the part that is faulty. The CNC machine can be thought of as a manufacturing extension of the robotics industry.

Computer controlled machines are used by CNC machining centers. The term CNC means computer numerical control. Machine tools are controlled by a computer. Lathe machines use these tools to turn blocks of material into creative and decorative shapes. The computer ensures that the machine performs the required tool functions in the right order and to the specified tolerance. A good example of this is the metal lathe. The metal lathe is often used to cut threads into screws. The computer controls allow the threads to be cut in a precise and accurate way.

The manufacturing industry has been changed drastically by CNC machining centers. CNC has allowed for accurate straight line cuts and difficult 3-D designs have become very easy to manufacture. Human interaction is no longer necessary every step of the way. Automation has also made significant improvements to the quality and consistency of the products being made. Errors in the production process have been reduced. CNC automation also controls tool changes, reducing the amount of time the operator needs to spend working on the machine. Job shop cell production has increased dramatically since the addition of automated software.