公开(公告)号：US20170326658A1

公开(公告)日：2017-11-16

申请号：US15536412

申请日：2016-04-21

Applicant: TUNGALOY CORPORATION

Inventor： Yuki OIKAWA ,  Ryuichi SAJI ,  Satoru YOSHIDA

IPC: B23C5/22 ,  B23C5/10

CPC classification number: B23C5/2208 ,  B23C5/109 ,  B23C5/202 ,  B23C5/2221 ,  B23C5/223 ,  B23C2200/0494 ,  B23C2200/164 ,  B23C2210/168

Abstract: A tool body having an insert seat and a cutting tool which allow a cutting insert to be stably held are provided. A tool body according to the present invention is a tool body having an insert seat for mounting a cutting insert on the tool body, wherein the insert seat has a base surface and a side wall surface which extends so as to intersect with the base surface. The base surface has a contact surface and a contact projected part which come into contact with the cutting insert. A contact part of the contact surface is comprised of a surface, and a contact part of the contact projected part has a linear shape or a point shape.

公开(公告)号：US20170326656A1

公开(公告)日：2017-11-16

申请号：US15520309

申请日：2016-05-17

Applicant: TUNGALOY CORPORATION

Inventor： Ryuichi SAJI ,  Satoru YOSHIDA ,  Yuki OIKAWA

IPC: B23C5/10 ,  B23C5/24

CPC classification number: B23C5/109 ,  B23C5/2221 ,  B23C5/2472 ,  B23C2200/0411 ,  B23C2210/16 ,  B23C2210/168

Abstract: The present invention relates to a tool body provided with at least one insert seat. The insert seat comprises a bottom wall surface and a side wall surface. The side wall surface comprises a first side wall surface and a second side wall surface. The first side wall surface comprises at least two surface portions. The first surface portion is a curved surface in a recessed shape, and the second surface portion is a curved surface in a recessed shape having a greater curvature radius than that of the first surface portion or a flat surface. The two surface portions both come into contact with a cutting insert.

公开(公告)号：US20170050249A1

公开(公告)日：2017-02-23

申请号：US15307519

申请日：2015-11-26

Applicant: TUNGALOY CORPORATION

Inventor： Yuki OIKAWA ,  Ryuichi SAJI

IPC: B23C5/20 ,  B23C5/10

CPC classification number: B23C5/207 ,  B23C5/1027 ,  B23C5/109 ,  B23C5/2221 ,  B23C2200/045 ,  B23C2200/085 ,  B23C2200/164 ,  B23C2200/203 ,  B23C2210/168

Abstract: A cutting insert has first and second end surfaces, a peripheral side surface, a reference central axis A perpendicular to and passing through the two surfaces, and a cutting edge having at least one circular-arc-shaped cutting edge. A contact surface portion is formed in the second end surface. The arc-shaped cutting edge is part of virtual circle having a center E which is spaced apart from the central axis A. A longitudinal plane B includes the central axis A and the center E; a median plane C perpendicular to the central axis A passes midway between the two end surfaces; and a virtual plane D perpendicular to both the longitudinal plane B and the median plane C, intersects the circular-arc-shaped cutting edge and traverses the contact surface portion. In a cross-section along the virtual plane D, the contact surface portion is inclined relative to the median plane C.

Abstract translation: 切削刀片具有第一和第二端面，周边侧表面，垂直于并穿过两个表面的基准中心轴线A以及具有至少一个圆弧形切割刃的切削刃。 接触表面部分形成在第二端面中。 弧形切削刃是具有与中心轴线A间隔开的中心E的虚拟圆的一部分。纵向平面B包括中心轴线A和中心E; 垂直于中心轴线A的中间平面C通过两个端面之间的中间; 并且垂直于纵向平面B和中间平面C的虚拟平面D与圆弧形切割边相交并且穿过接触表面部分。 在沿着虚拟平面D的横截面中，接触表面部分相对于中间平面C倾斜。

公开(公告)号：US20190351492A1

公开(公告)日：2019-11-21

申请号：US16412965

申请日：2019-05-15

Applicant: TUNGALOY CORPORATION

Inventor： Hikaru SHIROMA ,  Satoru YOSHIDA ,  Yuki OIKAWA

IPC: B23C5/20 ,  B23C5/06

Abstract: There is provided a cutting insert which is capable of cutting by using either one of both surfaces and is stably supported by a tool body. Each of a first end surface and a second end surface of a cutting insert includes a first inclined surface which is inclined from a diagonal line by which a corner portion connecting a first peripheral side surface and a second peripheral side surface and a corner portion connecting a third peripheral side surface and a fourth peripheral side surface are joined toward a corner portion connecting the first peripheral side surface and the fourth peripheral side surface such that a distance to an imaginary plane decreases, and a second inclined surface which is inclined from the diagonal line toward a corner portion connecting the second peripheral side surface and the third peripheral side surface such that a distance to the imaginary plane decreases.

公开(公告)号：US20180036811A1

公开(公告)日：2018-02-08

申请号：US15553118

申请日：2016-03-04

Applicant: TUNGALOY CORPORATION

Inventor： Ryuichi SAJI ,  Satoru YOSHIDA ,  Yuki OIKAWA

IPC: B23C5/10 ,  B23C5/20

CPC classification number: B23C5/109 ,  B23C5/207 ,  B23C2200/0416 ,  B23C2200/083 ,  B23C2200/123 ,  B23C2200/162 ,  B23C2200/168 ,  B23C2200/203

Abstract: A cutting insert including a first end surface, a second end surface and a peripheral side surface extending therebetween. The first and second end surfaces each having one substantially quadrangular portion and two substantially semicircular portions which are respectively joined to two opposing sides of the substantially quadrangular portion. An intersecting edge between each of the first and second end surfaces and the peripheral side surface is provided with a cutting edge. The cutting edge is formed in at least part of the substantially semicircular portion. At least part of a portion of the peripheral side surface which is adjacent to the substantially quadrangular portion of each of the first and second end surfaces, and at least part of a portion of the peripheral side surface which is adjacent to the substantially semicircular portion, each have a function of coming into contact with an insert seat.

公开(公告)号：US20170008100A1

公开(公告)日：2017-01-12

申请号：US15120789

申请日：2015-02-25

Applicant: TUNGALOY CORPORATION

Inventor： Yuki OIKAWA

IPC: B23C5/20 ,  B23C5/06

CPC classification number: B23C5/207 ,  B23C5/06 ,  B23C2200/0494 ,  B23C2200/208 ,  B23C2200/365 ,  B23C2200/366 ,  B23C2210/045 ,  B23C2220/28 ,  B23C2220/44

Abstract: A cutting insert has an upper surface (21), a lower surface (91) and a side surface (61) that connects the two surfaces. A cutting edge is formed at an intersecting edge between the upper surface (21) and the side surface (61). The cutting edge includes at least a major cutting edge (33), a corner edge (34) connected to the major cutting edge (33), and a curved wiper edge (35) located on the opposite side of the major cutting edge (33) across the corner edge (34). A first angle θ made by the major cutting edge (33) and the chord of the wiper edge (35) is 155°≦θ

Abstract translation: 切削刀片具有连接两个表面的上表面（21），下表面（91）和侧表面（61）。 在上表面（21）和侧面（61）之间的交叉边缘处形成有切割刃。 所述切削刃至少包括主切削刃（33），连接到所述主切削刃（33）的角刃（34）和位于所述主切削刃（33）相对侧上的弯曲刮刃（35） ）穿过角落边缘（34）。 由主切削刃（33）和刮片边缘（35）的弦线构成的第一角度θ为155°≤θ<180°，在刮片边缘（35）上形成有正的平台。 所述切削刃还可以包括位于所述角部边缘（34）的穿过所述刮水器边缘（35）的相对侧上的内部切削刃（36）。

公开(公告)号：US20190118275A1

公开(公告)日：2019-04-25

申请号：US16132589

申请日：2018-09-17

Applicant: TUNGALOY CORPORATION

Inventor： Yuki OIKAWA ,  Yuma KONDOU

IPC: B23C5/20 ,  B23C5/22

Abstract: The present invention provides a cutting insert 10 which is mounted on an indexable rotating tool E comprising a body B that rotates about a predetermined rotational axis AX. The cutting insert 10 comprises an upper surface 10a, a lower surface 10b and a peripheral side surface. The cutting insert 10 further comprises an inner cutting edge 10g and a corner cutting edge 10f. A top part S, which has the maximum distance from the lower surface 10b, is located on the corner cutting edge 10f.