公开(公告)号：US11185933B2

公开(公告)日：2021-11-30

申请号：US16612062

申请日：2018-05-03

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Rasmus Hemph ,  Hakan Carlberg

IPC: B23B51/04 ,  B23B51/02

Abstract: A drill body and a drill are disclosed. The drill body has a rotational axis and comprises a central chip flute extending along a periphery of the drill body. A central chip flute cross-section has a centre line extending in a plane extending perpendicularly to the rotational axis, and through the rotational axis. The central chip flute cross-section has a depth, as seen along the centre line, and a width as seen perpendicularly to the centre line. The central chip flute cross-section has a maximum depth Dp within a range of Dp=0.75×D/2 to Dp=0.90×D/2, and a maximum width W within a range of W=0.75×D/2 to W=0.90×D/2, and wherein the maximum width W extends symmetrically about the centre line.

公开(公告)号：US11014171B2

公开(公告)日：2021-05-25

申请号：US16612068

申请日：2018-05-03

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Rasmus Hemph ,  Hakan Carlberg

IPC: B23B51/04

Abstract: A drill body and a drill are disclosed. The drill body has a rotational axis and includes a peripheral chip flute extending along a periphery of the drill body. A peripheral chip flute cross-section has a centre line extending in a plane extending perpendicularly to the rotational axis, and through the rotational axis. The peripheral chip flute cross-section has a radially inner side extending perpendicularly to the centre line, and first and second lateral sides connecting to the radially inner side. The radially inner side has a length L1 within a range of L1=0.95×D/4 to L1=1.2×D/4. Each of the first and second lateral sides has a length LS1, LS2 within a range of D/4 to 1.3×D/4. The first and second lateral sides diverge from each other in a direction radially outwards from the radially inner side.

公开(公告)号：US11103935B2

公开(公告)日：2021-08-31

申请号：US16644644

申请日：2018-08-24

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Hakan Carlberg ,  Fritz Alum Yah

IPC: B23B51/02 ,  B23B51/04

Abstract: A metal cutting drill insert for a drill tool having a chip disruptor provided at a rake face. The chip disruptor is further configured with a chamfer at a leading cutting edge region to increase cutting resistance and facilitate chip breakage.