公开(公告)号：US20230219145A1

公开(公告)日：2023-07-13

申请号：US18054200

申请日：2022-11-10

Applicant: TUNGALOY CORPORATION

Inventor： Yusuke SUZUKI

IPC: B23B27/16

CPC classification number: B23B27/16

Abstract: Provided is a tool head in a head replaceable cutting tool configured on the basis of a novel idea so as to allow external measurement to be easily performed, while allowing cutting performance to be maintained. The tool head in the head replaceable cutting tool has a substantially cylindrical shape, and can be fastened to a shank held on a machine tool, and moreover includes an insert mounting seat on which a cutting insert is to be detachably mounted, the tool head further including a point, a line, or a surface that defines a reference surface from which a cutting edge of the cutting insert has a predetermined length to a predetermined portion thereof.

公开(公告)号：US20230001488A1

公开(公告)日：2023-01-05

申请号：US17732787

申请日：2022-04-29

Applicant: TUNGALOY CORPORATION

Inventor： Hiroki SHIMANUKI ,  Yusuke SUZUKI

IPC: B23B27/16

Abstract: Provided is a holder of a cutting insert that performs turning on a work by feeding a cutting edge in a Y axis direction which is different from a longitudinal direction (X axis) of a tool holder installed in a tool rest, and that can easily adjust the projection amount without contacting a part of the holder to the tool rest. A Y axis holder holds the cutting insert including a cutting edge to perform turning on a work that moves along the Z axis, and is installed in a state where relative movement in the X axis direction with respect to the tool rest is possible, such that a projection amount of the cutting insert along the X axis is changeable. The Y axis holder performs turning on the work using the cutting insert when the holder moves in the Y axis direction which is different from the X axis direction. The Y axis holder has a shape in which an end portion thereof in the X axis direction is projected from the cutting edge of the cutting insert, and a positioning portion to determine the projection amount of the cutting insert from the tool rest is disposed on the end portion.

公开(公告)号：US20220274184A1

公开(公告)日：2022-09-01

申请号：US17550136

申请日：2021-12-14

Applicant: TUNGALOY CORPORATION

Inventor： Yusuke SUZUKI ,  Yasutake SASAKI

IPC: B23B27/16

Abstract: Chip discharge during high-feed machining and low-feed machining particularly in a high-depth-of-cut state or the like is improved so as to provide adaptability to a wide range of cutting conditions during low depth and high depth cutting and during low-feed and high-feed machining and allow so-called freedom of feed during cutting to be improved. A cutting insert includes a cutting edge body and a substrate to which the cutting edge body is joined. The cutting edge body has a prismatic shape having a longitudinal direction and a lateral direction perpendicular to the longitudinal direction and includes a cutting edge formed on an intersecting edge between a peripheral side surface and an upper surface of the cutting edge body having the prismatic shape and a recessed part formed at a position on the upper surface of the cutting edge body which is more distant from the intersecting edge than from the cutting edge. The substrate has a projected part upwardly projecting from the upper surface of the cutting edge body.

公开(公告)号：US20240278329A1

公开(公告)日：2024-08-22

申请号：US18584353

申请日：2024-02-22

Applicant: TUNGALOY CORPORATION

Inventor： Yusuke SUZUKI

IPC: B23B27/00 ,  B23B27/16

CPC classification number: B23B27/007 ,  B23B27/1622 ,  B23B2220/12

Abstract: A body of a cutting tool and a cutting insert which can further improve support stiffness of the cutting insert are provided.
A body of a cutting tool includes an insert seat provided on a leading end part of the body, a screw hole with which a fastening screw is screwed, a deep seat portion provided at a deep part in the insert seat in an axial direction of the screw hole, a receiving portion receiving a contact portion of the cutting insert, a wall portion having a base-end side rotation suppression portion which stops rotation of the cutting insert, and a shallow seat portion, the depth of a seat thereof being shallower than a part with the receiving portion, wherein the base-end side rotation suppression portion is positioned not to overlap the deep seat portion when viewed along a screw-hole axis.

公开(公告)号：US20220331883A1

公开(公告)日：2022-10-20

申请号：US17685826

申请日：2022-03-03

Applicant: TUNGALOY CORPORATION

Inventor： Yusuke SUZUKI

IPC: B23B29/04 ,  B23B27/16

Abstract: A cutting insert and a cutting tool which can suppress lowering of blade-edge positional accuracy while holding by a holder having a small thickness is enabled are provided.
The cutting insert includes a first end surface, a second end surface, and a peripheral side surface connected to the first end surface and the second end surface and having a rake face, a flank, and a cutting edge formed in a connection region between the rake face and the flank, and a through hole penetrating the first end surface and the second end surface is formed. It is the cutting insert including a first contact surface substantially perpendicular to a center axis direction of the through hole and capable of contacting the holder, a second contact surface substantially in parallel with the center axis direction of the through hole, substantially perpendicular to a plane including the first contact surface and capable of contacting the holder, and a third contact surface inclined with respect to the center axis direction of the through hole and capable of contacting the holder, and a cutting tool including the cutting insert as above.

公开(公告)号：US20220055119A1

公开(公告)日：2022-02-24

申请号：US17403944

申请日：2021-08-17

Applicant: TUNGALOY CORPORATION

Inventor： Yusuke SUZUKI ,  Katsura MOCHIZUKI

IPC: B23B27/16

Abstract: Provided is a cutting tool that implements both high positioning accuracy and simple operation when the cutting tool is installed in a tool rest. The cutting has: a tool a main body which includes a fixing seat fixing a cutting insert or a cutting edge; and a position pin, which includes a cylindrical portion that is used for positioning the main body by being abutted to an abutting surface of a tool rest in a case of installing the main body in the tool rest, and which is detachable from the main body. The main body includes a female screw hole that is provided with a female screw portion and a tapered surface that is symmetric with respect to a center axis of the female screw portion and that widens toward an opening thereof. The positioning pin includes a male screw portion that engages with the female screw portion, and a contact portion located at a connecting portion that connects an end of the cylindrical portion and an end of the male screw portion. In a case where the male screw portion is engaged with the female screw portion and the positioning pin is installed in the main body, the contact portion contacts the tapered surface, and a center axis of the cylindrical portion and a center axis of the tapered portion match with each other.

公开(公告)号：US20240278330A1

公开(公告)日：2024-08-22

申请号：US18582602

申请日：2024-02-20

Applicant: TUNGALOY CORPORATION

Inventor： Yusuke SUZUKI

IPC: B23B27/10

CPC classification number: B23B27/10

Abstract: A cutting tool able to sufficiently supply coolant toward a cutting edge of a cutting insert during a cutting process involving grooving a workpiece face includes a first flow path through which coolant is supplied toward a body leading end side, a first jetting port, a second flow path branching at a branch point along the first flow path, a second jetting port, and a guide member having a guide surface distanced from the second jetting port and forming a space for coolant to flow to the cutting edge from the second jetting port. In the first flow path, a substantially straight upstream-of-branch flow path on further toward a base end side than the branch point is at least twice as long as a downstream-of-branch flow path from the first jetting port to the branch point. The second flow path inclines at a 30° to 85° angle to the upstream-of-branch flow path.

公开(公告)号：US20240123516A1

公开(公告)日：2024-04-18

申请号：US18547064

申请日：2021-12-16

Applicant: ISCAR LTD. ,  TUNGALOY CORPORATION

Inventor： Gil HECHT ,  Yusuke SUZUKI

IPC: B23B27/16

CPC classification number: B23B27/1611

Abstract: A turning tool (1) that does not easily interfere with other tools and can supply a sufficient amount of coolant is provided. The turning tool (1) includes: a cutting insert (10) which is mirror-image symmetric with respect to a first and second symmetric surfaces (M1, M2); and a tool body (2) which has a first discharge port (5) to supply coolant to a first cutting edge (21E) of the cutting insert (10) from a first rake surface (21R) side. The first discharge port (5) is disposed between a second flat surface (32) and a first reference surface (Vxz) which is parallel with the second flat surface (32) and includes an edge line of the first cutting edge (21E).

公开(公告)号：US20230415240A1

公开(公告)日：2023-12-28

申请号：US18338983

申请日：2023-06-21

Applicant: TUNGALOY CORPORATION

Inventor： Yusuke SUZUKI

IPC: B23B29/32

CPC classification number: B23B29/32

Abstract: The present invention can realize better cutting performance while suppressing an influence of, for instance, deflection of a head and an increase in a moment acting on a fastening mechanism even when a cutting insert of a long total length is used. A shank of a head replaceable type cutting tool includes: a fastening mechanism that is formed at a leading end part in a longitudinal direction of the shank, and attaches a head; and a recessed part that is formed at the leading end part so as to accommodate a part of a cutting insert held by the head and avoid an interference with the cutting insert. The recessed part may be provided to accommodate a non-use part of the cutting insert held by the head in a state where the head is attached to the leading end part, and avoid an interference with the cutting insert.

公开(公告)号：US20220258252A1

公开(公告)日：2022-08-18

申请号：US17582413

申请日：2022-01-24

Applicant: TUNGALOY CORPORATION

Inventor： Yusuke SUZUKI

IPC: B23B27/08 ,  B23B27/16

Abstract: Provided is a cutting insert having two cutting parts that is capable of entering a workpiece more deeply and easily supports machining of a groove or hole having a small diameter in a workpiece. A cutting insert includes: a body having at least an inner surface to be fixed to a tool body of a cutting tool and an outer surface opposed to the inner surface; and two cutting parts protruding in opposite directions in a longitudinal direction of the body. The cutting part includes: a cutting upper surface; a cutting front surface; and a first cutting side surface and a second cutting side surface. A front cutting edge is located on an edge between the cutting upper surface and the cutting front surface. In a projection view of the body as seen from the longitudinal direction, the cutting upper surfaces of the two cutting parts are oriented in directions opposed to each other, and front cutting edges of the two cutting parts are disposed so as to be more away from each other as being closer to the first cutting side surface from the second cutting side surface.