Walter Ag

Christian Bandura

Rudi Zeeb

Clamping holder for cutting inserts has a rigid holding part and a clamping finger elastically movable with respect to the rigid holding part that define opposite sides of a substantially U-shaped recess for receiving a cutting insert. One of these two sides has first and second spaced-apart contact points for one side of a cutting insert and the opposite side has a third contact point. A stop for limiting the insertion depth of the cutting inset into the recess is provided inside the recess. That side of the cutting insert that has the third contact point is additionally assigned the stop, which is configured such that it simultaneously acts as a further, fourth lateral contact point opposite the first and second contact points and as a stop for limiting the insertion depth of the cutting insert.

Insert and clamping holder having four-point contacts

Indexable cutting insert with a plate-like main body having two parallel main surfaces and a peripheral surface connecting the two main surfaces and with a plurality of sections angled with respect to one another, wherein four cutting edges that extend transversely to the main surfaces are provided on the peripheral surface at the transition to sections, that are angled with respect to one another, of the peripheral surface, and wherein the position of the cutting edges defines a quadrilateral in the plan view of the main surfaces. Fixing with more favorable leverages and permanently more precise positioning of the cutting edges are provided by the quadrilateral having in each case two short and two long sides and cutting edges oriented in each case in opposite directions in the peripheral direction at adjacent corners and oriented in each case in the same direction at diagonally opposite corners of the quadrilateral.

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Karlsruhe, Germany

Christian Bandura