Even though the CNC machines require little human intervention in the development process of the end desired product, human intervention is still needed when it comes to the computer software programming for the CNC machines. A CNC machine programmer must understand the programming, so that they are capable of accurately telling the machine what to do.
CNC machines a programmed through a sentence like structure that is written in a code that it understands. Each axes that the machine uses, requires instructions for the development of the final project. If you forget to program one of the axes, the product will not turn out; in the same terms, if you program wrong, the axes will do what the program tells them and not what you want them to do.
A CNC machine operator helps on the other end. The programmer writes the code for the machine, but the operator is responsible for downloading the program into the machine and getting the machine set up to properly do the job.
The operator may have to set up the tools in the tool holder for the machine, position the material that is needed for the job in the machine, and then start the machine. If the CNC machine operator is experienced, they will begin to learn the different sounds that the machine makes and will be able to tell just by the sound whether there is a problem with the machine. A more experienced CNC machine operator is required to do this type of work.
Once the machine completes the program and the work progress is done, operators may be switched. At this point in time, a less experienced operator can take over from here. Usually CNC machine operators will start out at the lower level and gradually work their way up as they become more experienced in this type of machining.
Experienced CNC machine operators can detect program flaws and can usually make the modifications to the program themselves. If they notice that the end product is not to the specifications needed, they can fix the problem in the program and continue on with the job. They will not have to take the time to contact the programmer and wait for the program to be fixed.
Limited input from the operator is needed to operate a CNC machine. It is because of this reason that one operator may be able to watch multiple machines. The machines do all of the work and only one person is required to do the set up of the machines. This enables companies to employ fewer people and saves them in the payroll department.
CNC machine operators must adhere to safety precautions just like they would in any other machine shop. Even though the CNC machines are usually completely enclosed and can limit the noise, debris and so on, there are still dangers and the operator will need to abide by the safety rules and precautions. Wearing safety goggles/glasses and ear plugs are a good idea and can help to protect the operator.