What is a CNC Operator?

The first numerical control machines were built in the 1940s and 1950s. The equipment was automated and ran by a program with commands on tape, electrical impulses or a computer system, rather than being manually controlled. This greatly increased the number of products that could be produced in a day. Over the years, these machines evolved into using both analog and digital computers and are now called computer numerical controlled, or CNC, tools.

Operations

Computer numerically controlled machines are programmed to perform hundreds of different functions. They drill, cut and shape highly precise items that are used in numerous industries, such as the automotive and aerospace. Computer control programmers and operators write and perform the operations that drive these machines, which include laser cutting equipment, drill presses, milling machines and lathes. Computer control programmers and operators usually manufacture large amounts of a single part at a time with little waste, although at times they may be asked to customize products in smaller numbers. They apply their experience and expertise about metals and plastics and CNC programming abilities to design and complete the operations needed by the end customer.

Responsibility

The CNC programmer creates the computer programs that run the equipment. They review blueprints of the item that needs to be made and in what order. They translate their instructions into a computer program with specified commands for the machine to follow. Then the CNC operator takes over and readies the equipment to perform the necessary work. They download the program, place the required tools and metal or plastic that is to be shaped into the machine and perform a test run. Once any problems are detected and modified, the operator will run the needed amount of product.

Function

The CNC operators, some who also have programming experience, continue to look for any problems. These can be detected by hearing too much vibration in the cutting tools, which cause errors and diminish product quality. The CNC operators also check to see that the metal or plastic, called the workpiece, is adequately lubricated and cooled. Machine tools generate a great deal of heat in their operations. One operator may watch several machines at a time, depending on the complexity of the work that needs to be performed.

Need

According to the U.S. Bureau of Labor Statistics, there is a growing shortage of computer operators. Although increased use of computer technology is decreasing the number of operators required, there are not enough skilled and knowledgeable individuals to fill the many jobs still available. Thus, CNC operators are expected to have excellent career opportunities through the coming decade.

Education

CNC operators learn their trade on the job, apprenticeship programs and in vocational and secondary schools. Many have advanced from other manufacturing positions, such as machinists or tenders. If you are interested in pursuing this field, you should take as many math courses as possible in high school. In vocational school, you will have such classes as physics, reading blueprints, computer-aided design, computer programming, drafting, machine operations and metal and plastic working.

References

• U.S. Bureau of Labor Statistics: Computer Operators