Ceratizit Austria Gesellschaft M.b.h.

Plansee Tizit Aktiengesellschaft

Helmut Male

Peter Obkircher

Thomas Trenkwalder

A high-speed milling cutter has a tool parent body and one or more plate-shaped cutting inserts with a convex, approximately arc-shaped cutting edge. The insert(s) is/are fastened in an insert seat of the tool parent body. Mating elements with mutual contact surfaces for absorbing the centrifugal forces occurring during use are provided in each case between insert seat and cutting insert. The contact surface of the first mating element is designed in the shape of a circular arc, approximately concentrically to the cutting edge. The contact surface of the second mating element is likewise designed in the shape of a circular arc, approximately concentrically to the cutting edge, or consists of at least two contact zones which lie on an imaginary circular arc, approximately concentrically to the cutting edge, the contact surface or the imaginary circular arc coinciding with the contact surface of the first mating element.

High-speed milling cutter

The invention pertains to a metal-cutting tool with at least one recess ( ) for receiving a cutting insert ( ). The cutting insert ( ) is securely clamped in the recess ( ) by an elastic clamping arm ( ), which forms the upper contact surface ( ) of the recess ( ). According to the invention, the lower contact surface ( ) of the cutting insert ( ) and the lower contact surface ( ) of the recess ( ) are at least partially configured in an arc. The radius (r) of the arc of the contact surface ( ) is designed slightly smaller than the arc (R) of the contact surface ( ). The upper contact surface ( ) of the cutting insert ( ) and the contact surface ( ) of the clamping arm ( ) are matched in such a way that mutual contact takes place in a range which is at a distance from the symmetry line (S) in the direction of the cutting edge ( ) of the cutting insert ( ).

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Höfen, Austria

Helmut Male