Abstract: In the case of an impactor (1) with an impact plate (7) and a classifying nozzle (2) directed at this impact plate (7), in the case of which the impact plate (7) is formed as an electronically readable resonantly oscillating, mass-sensitive element (7, 33), it is proposed to move the oscillating crystal (7, 33) held in an impact plate holder (8) in relation to the static classifying nozzle (2) by a motor (12) during the operation of the impactor (1).

Abstract: In the case of an impactor (1) with an impact plate (7) and a classifying nozzle (2) directed at this impact plate (7), in the case of which the impact plate (7) is formed as an electronically readable resonantly oscillating, mass-sensitive element (7, 33), it is proposed to move the oscillating crystal (7, 33) held in an impact plate holder (8) in relation to the static classifying nozzle (2) by a motor (12) during the operation of the impactor (1).

Abstract: The invention relates to a method and a device for the precision machining of crankshafts or camshafts to final size tolerances RZ<10 ?m, preferably ?5 ?m and concentricity tolerances?30 ?M, preferably 6 ?m. The crankshafts or camshafts has been machined by a cutting operation and at least partly subjected to hardening. According to the invention, after an initial cutting operation and subsequent hardening to 45 to 60 HRC, preferably 50 to 53 HRC, a final cutting operation is carried out using cutting inserts fitted with CBN or PCD inlets. The device used for this purpose has cutting inserts which are fitted with CBN or PCD inlets, wherein cutting inserts clamped in place laterally, radially and tangentially follow each other alternately.

Abstract: The invention relates to a cutting insert (10) with a base, having a supporting surface, a covering surface, at a distance therefrom and side faces (101, 102), connecting said surfaces, whereby two or several adjacent surfaces form cutting edges (103, 104, 105). According to said invention, the supporting surface is connected in a non-detachable manner to a supporting surface of a cutting plate (11), the geometry of which is different from the cutting insert (10) and suitable for another metal cutting operation.

Abstract: The invention relates to a cutting insert for clamping into a disc-type or strip-shaped tool body, in particular, for milling crankshafts, whereby the insert is substantially cuboid-shaped and has two front faces, two side faces, serving as cutting faces as well as an upper and a lower side face, whereby a convex face is arranged between the front faces and the upper and lower side faces, so that the upper and lower side faces and the convex face form cutting edges each with a side face. According to invention, the cutting insert has an inwardly-tapered face adjoining the convex face, which allows the cutting edge to protrude and tapered chamfers are provided between the inwardly-tapered faces of the front face on both sides of a planar supporting surface to the outer edge.

Abstract: The invention relates to a method and a device for the precision machining of crankshafts or camshafts to final size tolerances Rz<10 ?m, preferably ?5 ?m and concentricity tolerances ?30 ?M, preferably 6 ?m. The crankshafts or camshafts has been machined by a cutting operation and at least partly subjected to hardening. According to the invention, after an initial cutting operation and subsequent hardening to 45 to 60 HRC, preferably 50 to 53 HRC, a final cutting operation is carried out using cutting inserts fitted with CBN or PCD inlets. The device used for this purpose has cutting inserts which are fitted with CBN or PCD inlets, wherein cutting inserts clamped in place laterally, radially and tangentially follow each other alternately.

Abstract: The invention relates to a cutting insert (10) with a base, having a supporting surface, a covering surface, at a distance therefrom and side faces (101, 102), connecting said surfaces, whereby two or several adjacent surfaces form cutting edges (103, 104, 105). According to said invention, the supporting surface is connected in a non-detachable manner to a supporting surface of a cutting plate (11), the geometry of which is different from the cutting insert (10) and suitable for another metal cutting operation.

Abstract: The invention relates to a cutting insert for clamping into a disc-type or strip-shaped tool body, in particular, for milling crankshafts, whereby said insert is substantially cuboid-shaped and has two front faces, the distance between which defines the width (4) of the cutting insert, two side faces, serving as cutting faces (6) and the distance between which determines the thickness (3) of the cutting insert as well as an upper and a lower side face (5), whereby a convex face (1) is arranged between the front faces and the upper and lower side faces, so that the upper and lower side faces and the convex face form cutting edges (7) each with a side face, which terminate laterally in cutting corners.

Abstract: A milling cutting has a rotatable cylindrical tool carrier and is provided with polygonal cutting inserts including radial cutting inserts on the sides of the carrier and longitudinal cutting inserts on the cylindrical periphery which alternate with the radial inserts. The tangential cutting inserts have their cutting edges inclined to the axis or rotation at about 25° and have their rear most parts at a spacing from the cutting edge of the next following radial insert of less than 5 mm. The tool is especially useful for machining the cheeks and pins of a crank shaft.

Abstract: The invention relates to a side-milling cutter (15, 16) for machining cylindrical contours on a workpiece, in particular a crankshaft (10). Said cutter comprises several cutting inserts, tilted at an axial angle of inclination (x), arranged on the periphery of a disc-shaped tool carrier. One part of said inserts is mounted radially and the other part of said inserts tangentially on the tool carrier.