These work a plane or profile surface by means of rotating tools (known as milling cutters), the circular cutting movement is combined with a traversing movement of the article fixed on the machine table. Milling machines include, inter alia, horizontal milling machines, vertical milling machines, horizontal-vertical milling machines, milling machines with adjustable heads, plane-milling machines, universal milling machines which, in addition to the normal milling work, can by means of a dividing head mounted on the machine, mill splines in a shaft, or spur or helical gears, repetitive milling machines, milling machines for grooving or chamfering, engraving millers.