Seco Tools Ab

Matti Karonen

Bertrand Riviere

Christer Jonsson

The present invention relates to an indexable cutting insert for an end mill for machining of contours in a workpiece and to a milling tool. The cutting insert is asymmetrical in respect of a line through a hole in the cutting insert. The cutting insert includes two cutting edge portions. Each cutting edge portion comprises of a substantially straight cutting edge and a curved cutting edge along respective intersecting lines between a clearance surface and a chip surface. The curved cutting edges have different lengths. The cutting insert includes recesses in a bottom side of the cutting insert. The recesses are arranged on both sides of and at different distances from the hole of the cutting insert.

Milling tool with cooperating projections and recesses between the cutting insert and the holder

The present invention relates to an indexable cutting insert for an end mill for machining of contours in a workpiece and to a milling tool. The cutting insert is asymmetrical in respect of a line through a hole in the cutting insert. The cutting insert comprises two cutting edge portions. Each cutting edge portion comprises a substantially straight cutting edge and a curved cutting edge along respective intersecting lines between a clearance surface and a rake face. The curved cutting edges have different lengths. The cutting insert has a bottom side and a first and a second opposite corner. The second corner is defined in plane view by a radius that is greater than, preferably at least twice as great as a radius of the first corner.

Indexable insert with corners with different radii

A milling cutter for chip removing machining includes a milling cutter body with a number of insert pockets in connection with an end of the milling cutter body. An opposite end of the milling cutter body is adapted to cooperate with a tool attachment. An indexable cutting insert is secured in the cutting insert seats, each indexable cutting insert having two substantially identical main surfaces. Two side surfaces and two end surfaces extend between the main surfaces, each main surface including two cutting insert corners, each cutting insert corner including major cutting edge and a minor cutting edge. Parts of each main surface include rake faces. Parts of each side surface and each end surface include clearance surfaces. The cutting insert has a height between the end surfaces and each main surface includes an associated support surface. A perpendicular distance of each main cutting edge to a plane that coincides with the support surface facing away from the main cutting edge increases in a direction from the cutting corner to a crest in the area of a half height of the indexable cutting insert.

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Hedemora, Sweden

Matti Karonen