Importance

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Abstract

An indexable insert milling tool with a milling body which on the circumference comprises distanced chip spaces, in which insert seats for indexable cutting inserts are formed, and with fastening screws which can be screwed into a threaded bore in the insert seat for fastening the indexable inserts via a middle hole, wherein the insert seat comprises a first bearing surface extending roughly perpendicular to the threaded bore, against which the rear side of the indexable inserts bear and a second bearing surface on the inner side of the chip spaces, against which the indexable inserts laterally bear. The indexable insert on the rear side on the cutting edge sides comprise raised elongate support sections wedge-shaped in cross section with lower parallel distanced elongate support surfaces. Bordering the second bearing surface in the insert seat there are formed recesses whose axes run approximately parallel to the second bearing surface and which in cross section are formed complementarily to the cross section of the support sections. The one support section is accommodated in the recess with an approximately positive fit and the indexable insert on tightening the fastening screw on account of the wedging effect is pressed against the second bearing surface, whilst the support surface of the other support section bears on a radial outer section of the first bearing surface.

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First Claim