<link rel="canonical" href="https://www.partzpro.com/blog/what-is-cnc-milling">
CNC milling is a manufacturing process where raw materials are carved and sculpted into shapes to produce a finished product. This is accomplished by using a computer to control the motion of a machine tool. The machine tool can be a cutting tool like a drill, router, or laser or a drilling machine like a milling machine.
CNC milling positions raw material between the cutting tool and anvil, the anvil moving vertically to be parallel with the cutting tool. The machine operator instructs the computer to make preparations for the desired product. They usually give the length, width, and height of the desired object. After the cutting tool moves to the particular point in space in relation to the table surface spindle, the computer moves the table to the next point in space for programming the next cut. The computer then sends a stream of data to the machine, which moves the cutting tool to the desired location. A brush removes any swarf as it is being produced.
The first operation of a CNC mill generally is to rough out the corners with a to break loose the material as well as to ensure that the table will be flat. The next steps may involve leveling the table and doing bevels and chamfers to the edges. The ight side is done by using a right-handed tool. The left side will be done by using a left-handed tool. The operator can specify on the milling machine how much material to remove, often set to three-eighths of an inch. The machine operator can choose to use a left or right-handed tool, depending on the purpose of the end product. However, left-handed tools are used to mill a right side and vice versa, they move the end product's direction by 180 degrees.
The process of CNC milling is often considered to be efficient due to its ability to remove excess material while ensuring the shape of the object. It also ensures that the object is level. While the machining process has limitations on the types of materials, many materials can be CNC milled. The grading system for determining strength of a material is used to determine the best tool for the material. The cnc milling process is also used to create objects that are more complicated than can be done by hand. It will produce pockets, holes, and slots of precise size and shape.