Kennametal Inc.

Kennametal Widia Produktions Gmbh & Co Kg

Ralf Klötzer

Markus Heinloth

Helmut Klein

Jürgen Bär

Manfred Bauer

Günther Gnibl

The invention relates to a method and a device for the precision machining of crankshafts or camshafts to final size tolerances R&#x3c;10 &#x3bc;m, preferably &#x2266;5 &#x3bc;m and concentricity tolerances&#x2266;30 &#x3bc;M, preferably 6 &#x3bc;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.

Method and device for the precision machining of crankshafts and camshafts

The invention relates to a milling cutter head having a number of blade supports () which are inserted in recesses of a base body () and have blades (), wherein each blade support can be axially displaced by a wedge and fixed in the milling cutter head by clamping elements. According to the invention, the blade supports each have a shank which is arranged in a receiving bore of the base body and can be fixed via a centrally () located clamping piece ().

Milling cutter head

Growing community of inventors

Langewiesen, Germany

Ralf Klötzer