Sandvik Ab

Lars-Gunnar Wallstrom

Hans E Lindberg

Lars Markusson

Goran Pantzar

Lars-Ola Hansson

Tommy S Tukala

Per Nilsson

Goran Pantzer

Cutting insert for milling cutters

A cutting insert for chip forming machining tools is formed with a chip surface whose chip or rake angle increases with increasing cutting depth. In this manner the cutting edge becomes stronger closer to the operative cutting insert comer, where the work load is the largest. Simultaneously, the rake angle increases and the cutting forces diminish towards increasing cutting depth, where the specific work load is smaller.

Cutting insert with twisted chip surface

A ball nose end mill comprises a body having a semi-spherical front surface and a plurality of indexable cutting inserts. A central one of the inserts is of generally triangular shape, and the additional inserts are of generally rectangular shape. The central insert has a generally convexly curved top surface, and the cutting edges thereof include main cutting edges which are convexly curved when the central insert is viewed from the side.

Ball end mill and throw away insert for such end mill

The invention provides a milling cutter for machining metal workpieces and a cartridge therefor. The milling cutter comprises a plurality of peripheral recesses for the receipt of insert-equipped cartridges. One of the walls of said recess is provided by two arms integral with the milling cutter body that each by means of a screw is arranged to clamp the cartridge against one wall in said recess. The cartridge is provided with two bores having suitable clearance for the receipt of said screws.

Milling cutter and cartridge therefor

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Sandviken, Sweden

Lars-Gunnar Wallstrom