Deep-hole drill having a plurality of chip-forming devices and recesses in the rake face
Assigneebotek Präzisionsbohrtechnik GmbH
InventorsGotthold Schur, Jürgen Deeg
Life of this patent
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Abstract
The invention relates to a single-lip drill and a double-lip drill having a plurality of chip-forming devices or depressions in the rake face which are arranged in succession and at a distance from one another. As soon as a cutting edge and/or the associated chip-forming device or the associated depression is worn, the deep hole drill according to the invention can be reground using simple means.
Claims6
Deep hole drill comprising a drill head, the drill head having an axis of rotation, a drilling diameter (D), and one or two cutting edges, a planar rake face being assigned to each cutting edge, and the deep hole drill having one or two secondary cutting edges, characterized in that in each planar rake face a plurality of chip-forming devices and/or a plurality of depressions are arranged in spaced intervals along the central axis, wherein the chip-forming devices and/or the depressions in a sectional plane (C) which extends orthogonally to the one or two cutting edges have the shape of an isosceles or uneven triangle.
Dependencies are inferred from the claim text.