Importance

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Abstract

Cutter plates (19) with an approximately cube-shaped base body have been created, in particular for finish-milling of a crankshaft (5). At the edge of its cover surface, the base body is provided with a hump or protrusion, which can be embodied rib- or strip-shaped, has a cutting edge each on its front and back and adjoins the neighboring lateral surface. This cutting edge is a component of the main cutting edge (33) adjoining the cover surface. A corresponding protrusion (29) is provided on the lower end of the lateral surface (27) and adjoins the end of the cover surface (22) remote from the protrusion (28). In this case the lateral surface (27) is preferably inclined in such a way that it terminates flush with the protrusion (29) without forming a concave surface area with it. A corresponding milling tool can be completely and exclusively equipped with such cutter plates and can process in one work step the cylinder surface (14) of a crank pin, corresponding relief grooves (15, 16) toward both edges of the cylinder surface (14), and adjoining end faces (17, 18). In the course of this a higher number of cutting edges is provided in the area of the relief grooves (15, 16), than for the cylinder surface (14). Thus a particularly high degree of processing quality is achieved in the area of the relief grooves (15, 16) in particular. The relief grooves (15, 16) are designed in a production-friendly manner without trade-offs regarding processing quality and precision.

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First Claim