What is Milling? Milling is a machining method in which a metal is cut off in stages by motion. The tool rotates, and usually the workpiece is fed in a straight line opposite the tool (in most cases, the workpiece is fed along the table). In some cases, the workpiece remains fixed while the rotating tool is fed in a transverse straight line. Milling cutters have several cutting edges that can continuously remove a certain amount of material. When two or more cutting edges are cut into the material at the same time, the tool cuts the material to a certain depth on the workpiece. The figure shows the processing schematic diagram of various milling cutters.
Rough milling
Roughing of milling (rough milling) is the cutting of cuts
Marked, large feeds and the largest possible depth of cut are used during rough milling in order to remove as much material as possible in a shorter time. Roughing does not require much of the surface quality of the workpiece.
Rhodium
The surface quality of the workpiece rather than the amount of metal removed is the primary consideration in the finishing (finishing) of milling, which usually uses a small depth of cut, and the secondary cutting edge of the tool may have a special shape. Depending on the machine used, the cutting method, the material and the standard milling cutter used, a surface quality of Ra1.6um can be achieved, and even Ra0,4 μm under excellent conditions.
