Indexable insert drill and an insert with a symmetrical drill point and cutting edges of different lengths
AssigneeSandvik AB
InventorTommy Tukala
Life of this patent
Estimating the term…
Abstract
A drill with indexable inserts has one center insert (11) and one peripheral insert (12), said center insert having a symmetric drill point (25) on the drill axis (10) with a transverse edge which is continuous with one short edge (27) and one long edge (21,23) and a screw hole offset from the symmetry axis of the drill point (25) towards the side of the long edge (21,23).
Claims10
Drill with at least two indexable cutting inserts, comprising one center insert and one peripheral insert, wherein the center insert has a drill point on the axis of the drill, said drill point being symmetric with respect to the flat sides of the insert and has a transverse edge with is continuous with one short edge at a side of the insert and one long edge at another side of the insert.
Indexable insert for drills, comprising at least one drill point, said drill point being symmetrically located with respect to two flat sides of the insert and having a transverse edge which is continuous with one short edge at one side of the insert and one long edge at another side of the insert.
Dependencies are inferred from the claim text.