Widia Gmbh

Fried. Krupp Gesellschaft MIT Beschrankter Haftung

Jose Agustin Paya

Thomas Braun

Dirk Retzkowski

Rainer Von Haas

Norbert Reiter

Erwin Stallwitz

Klaus Rodiger

Helmut Morbitzer

Klaus Mader

Polygonal cotting insert

Polygonal cutting insert

Cutting insert

Cutting insert, especially for milling

A cutting insert is formed with a plurality of cutting edges, a cutting surface spaced inward from the cutting edges, and a continuous land having an outer periphery at the cutting edges and a curved inner periphery spaced inward therefrom and outwardly delimiting the cutting surface. The land dips at the inner periphery generally centrally of each edge toward the surface and thereby forms generally centrally of each edge at the inner periphery a region of minimal height above the surface.

Cutting insert with trapezoidal indentations along the cutting edge

Cutter insert

Cutting insert with grouped chip-forming ribs arranged symmetrically and

A cutting bit (1) has a bottom side (2), flanks (3) that are inclined at a positive clearance angle (.alpha.) with respect to the bottom side (2), and a top side (7). The top side (7) has cutting edges (5 and 5') which are inclined with respect to one another at an angle of inclination (.lambda.). The cutting bit is made by sintering a blank which is formed using a pressing tool (10). The pressing tool includes a mold member (11), an upper die (12), and a lower die (13). The upper die (12) has a pressure face (20) which corresponds precisely, except for an allowance for the shrinkage ratio of the sinter material, to the actual surface of the upper side of the cutting bit (1). When the upper die (12) is fully inserted into the mold (11), a free space (31) exists between the upper die (12) and the mold member (11), the free space being disposed above the delimiting line (21) of pressure face (20) of the upper die (12).

Cutting tool produced by sintering a blank formed by a pressing tool

Growing community of inventors

Mulheim, Germany

Jose Agustin Paya