A method for machining long edges of metal workpieces (2), wherein during the machining of the workpiece (2), all the cutting edges (z) are put into engagement with the machining surface (B) over an effective length (l) and having a cutting depth (t), and the removal of the chips is effected in each case over a length which is equivalent to the tooth spacing (a.sub.s) between the adjacent teeth simultaneously with their motion along the effective length (l).

A composite machining tool includes a tool body with at least one cutting edge and at least one grinding region. The grinding region is located adjacent to the cutting edge such that there is a gap between the grinding region and the cutting edge and such that when the tool performs a machining action the cutting edge and the grinding region act together on a material surface.

A composite machining tool includes a tool body with at least one cutting edge and at least one grinding region. The grinding region is located adjacent to the cutting edge such that there is a gap between the grinding region and the cutting edge and such that when the tool performs a machining action the cutting edge and the grinding region act together on a material surface.

A milling tool has a support member with an exterior surface with at least one receptacle, wherein the at least one receptacle has a bottom. At least one cutting element provided with a cutter having a cutting edge is positioned in the at least one receptacle. A three-point support is arranged between the at least one cutting element and the bottom of the at least one receptacle for positioning the cutting edge relative to the bottom of the at least one receptacle. The three-point support comprises three support pads arranged at a bottom side of the at least one cutting element and/or three projections arranged at the bottom of the at least one receptacle.

A milling tool has a support member with an exterior surface with at least one receptacle, wherein the at least one receptacle has a bottom. At least one cutting element provided with a cutter having a cutting edge is positioned in the at least one receptacle. A three-point support is arranged between the at least one cutting element and the bottom of the at least one receptacle for positioning the cutting edge relative to the bottom of the at least one receptacle. The three-point support comprises three support pads arranged at a bottom side of the at least one cutting element and/or three projections arranged at the bottom of the at least one receptacle.

A method for selecting a milling cutter, which method makes it possible to select a milling cutter on the basis of a part to be machined such that the cutting force is constant while the part is being machined.

A method for selecting a milling cutter, which method makes it possible to select a milling cutter on the basis of a part to be machined such that the cutting force is constant while the part is being machined.

The invention relates to an apparatus for processing cylinder walls of internal combustion engines (1), including a cutting element (4). The cutting element (4) is arranged on a rotary cutting ring (3). The cutting element (4) has a slit contour (5) with a plurality of cutting edges (6) arranged next to each other in a direction of an axis of rotation of the rotary cutting ring. And, the individual cutting edges (6) face in a direction of rotation of the rotary cutting ring.

A tapered end mill includes a cutting edge portion which includes an end cutting edge which extends from an inner peripheral side of an end mill body to an outer peripheral side thereof and a tapered peripheral cutting edge which extends from an outer peripheral end of the end cutting edge to a rear end side and has a cutting edge diameter which gradually increases toward the rear end side, the cutting edge portion being provided on a distal end portion of the end mill body which rotates around an axial line. A truncated conical tapered neck portion having an outer diameter which gradually increases toward the rear end side is provided on the rear end side of the cutting edge portion, and a columnar straight neck portion is provided about the axial line between the cutting edge portion and the tapered neck portion.

A tapered end mill includes a cutting edge portion which includes an end cutting edge which extends from an inner peripheral side of an end mill body to an outer peripheral side thereof and a tapered peripheral cutting edge which extends from an outer peripheral end of the end cutting edge to a rear end side and has a cutting edge diameter which gradually increases toward the rear end side, the cutting edge portion being provided on a distal end portion of the end mill body which rotates around an axial line. A truncated conical tapered neck portion having an outer diameter which gradually increases toward the rear end side is provided on the rear end side of the cutting edge portion, and a columnar straight neck portion is provided about the axial line between the cutting edge portion and the tapered neck portion.