A high precision milling cutter is usually controlled by a series of sensors that are connected to a central microprocessor within the machine. The microprocessor is also connected to peripheral devices such as computers or hard disks for easier access of CAD designs. It converts design language into machine understandable language that can be used by the sensors to control the motion of tool heads and work piece. The fact that CNC systems can easily interpret design language into machine language means that chances of making errors are reduced to zero. This leads to production of high precision complex designs.
Companies dealing with the manufacture of high precision milling cutters have also come up with sophisticated cooling systems that are used to ensure maximum efficiency in the machines. The cooling systems have been incorporated into the turning tools to ensure that areas in direct contact with the work piece are cooled properly. They have coolant holes through which the coolant can flow to reach the tool head, work piece and chips. The efficient cooling systems minimize on some defects (such as formation of built up edges) which may result to a poor surface finish.
The milling cutter is also equipped with efficient belt and gear systems that are used to control the speed of the machine. The gear systems are able to provide the user with multiple speeds depending on the sensitivity of the job and desired output. They are controlled by digital systems that are built into the microprocessor. This is an improvement from the manual speed control methods where levers were used to vary the speed of rotation of the machine. The machines are also equipped with gauges that are used to measure the internal and external diameters, depth of holes and length of work piece while undergoing various machining processes.