公开(公告)号：US20190351493A1

公开(公告)日：2019-11-21

申请号：US16312408

申请日：2018-05-15

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Keiji Kinoshita ,  Kouki Matsubara ,  Yusuke Koike

IPC: B23C5/22 ,  B23C5/10 ,  B23C5/28 ,  B23C5/24

Abstract: A second distance is longer than a first distance and a value obtained by dividing the third distance by the fourth distance is more than or equal to 0.5 and less than or equal to 0.8 when it is assumed that the first distance represents a distance between the cutting edge and the mounting surface in a direction perpendicular to the rake face, the second distance represents a distance between the mounting surface and a boundary portion between the rising portion and the flat portion in the direction perpendicular to the rake face, the third distance represents a distance between the boundary portion and a tip of the cutting edge in a direction parallel to the rake face, and the fourth distance represents a distance between the second discharging opening portion and the tip of the cutting edge in the direction parallel to the rake face.

公开(公告)号：US20190126366A1

公开(公告)日：2019-05-02

申请号：US16309147

申请日：2018-01-16

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Keiji Kinoshita ,  Kouki Matsubara

IPC: B23C5/22

Abstract: A milling tool includes: a body having an outer circumferential surface formed around a central axis; a cutting insert having a rake surface, a flank surface, and a cutting edge formed by a ridgeline of the rake surface and the flank surface; and a screw attaching the cutting insert to the body. The outer circumferential surface has an insert attachment. The insert attachment portion is defined by a first seat surface continuing to the outer circumferential surface and a second seat surface continuing to the first seat surface and having a flat portion provided with a screw hole in which the screw is inserted. The cutting edge is formed of a sintered material containing at least one of cubic boron nitride and polycrystalline diamond. In a cross section perpendicular to the central axis, a first angle formed by a first direction and a second direction is an acute angle.

公开(公告)号：US10300534B2

公开(公告)日：2019-05-28

申请号：US15504484

申请日：2015-08-19

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Yuma Kawakami ,  Daisuke Murakami ,  Masaaki Jindai ,  Keiji Kinoshita

IPC: B23B51/02 ,  B23B51/00

Abstract: Provided is a drill having a flat-shaped drill tip and excellent in cutting edge strength and chip removability. The drill includes: a cutting edge extending in a direction at an angle α of not less than 85° and not more than 90° with respect to a drill axis (line O-O); a flank face contiguous to the cutting edge and having a clearance angle β of not less than 5° and not more than 10° with respect to the drill axis (line O-O); and a rake face located opposite to the flank face across the cutting edge, the cutting edge includes a recess receding in a direction parallel to the drill axis (line O-O), and the rake face includes a front clearance formed at a side of an outer periphery of the drill.

公开(公告)号：US11059112B2

公开(公告)日：2021-07-13

申请号：US16309147

申请日：2018-01-16

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Keiji Kinoshita ,  Kouki Matsubara

IPC: B23C5/22

Abstract: A milling tool includes: a body having an outer circumferential surface formed around a central axis; a cutting insert having a rake surface, a flank surface, and a cutting edge formed by a ridgeline of the rake surface and the flank surface; and a screw attaching the cutting insert to the body. The outer circumferential surface has an insert attachment portion. The insert attachment portion is defined by a first seat surface continuing to the outer circumferential surface and a second seat surface continuing to the first seat surface and having a flat portion provided with a screw hole in which the screw is inserted. The cutting edge is formed of a sintered material containing at least one of cubic boron nitride and polycrystalline diamond. In a cross section perpendicular to the central axis, a first angle formed by a first direction and a second direction is an acute angle.

公开(公告)号：US10807173B2

公开(公告)日：2020-10-20

申请号：US16312408

申请日：2018-05-15

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Inventor： Keiji Kinoshita ,  Kouki Matsubara ,  Yusuke Koike

IPC: B23B5/22 ,  B23B5/28 ,  B23C5/22 ,  B23C5/24 ,  B23C5/28 ,  B23C5/18

Abstract: A second distance is longer than a first distance and a value obtained by dividing the third distance by the fourth distance is more than or equal to 0.5 and less than or equal to 0.8 when it is assumed that the first distance represents a distance between the cutting edge and the mounting surface in a direction perpendicular to the rake face, the second distance represents a distance between the mounting surface and a boundary portion between the rising portion and the flat portion in the direction perpendicular to the rake face, the third distance represents a distance between the boundary portion and a tip of the cutting edge in a direction parallel to the rake face, and the fourth distance represents a distance between the second discharging opening portion and the tip of the cutting edge in the direction parallel to the rake face.

公开(公告)号：USD879848S1

公开(公告)日：2020-03-31

申请号：US29662337

申请日：2018-09-05

Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

Designer： Keiji Kinoshita ,  Kouki Matsubara ,  Yusuke Koike