Abstract: An end milling cutter for machining workpieces made of a non-ferrous metal or plastic including two or more helically shaped cutting edges between which helically shaped chip flutes are formed which define a chip-cutting face along with the cutting edges, and a tool flank each between the cutting edge and the chip flute which follows next wherein the tool flanks or tooth backs are facet-shaped such that they are composed of individual reference surfaces which are approximately planar and are disposed at an angle with respect to each other as viewed in a circumferential direction.

Abstract: An end milling cutter for machining workpieces made of a non-ferrous metal or plastic including two or more helically shaped cutting edges between which helically shaped chip flutes are formed which define a chip-cutting face along with the cutting edges, and a tool flank each between the cutting edge and the chip flute which follows next wherein the tool flanks or tooth backs are facet-shaped such that they are composed of individual reference surfaces which are approximately planar and are disposed at an angle with respect to each other as viewed in a circumferential direction.

Abstract: A tangential thread rolling head includes two threaded rollers supported for free rotation on two parallel shafts; each of said rollers is provided with an unbalancing weight which by the force of gravity automatically adjusts a predetermined starting position of the rollers irrespective of the angular position of the head.