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1. 发明申请

US20190061024A1 CUTTING INSERT AND CUTTING TOOL 审中-公开
公开(公告)号：US20190061024A1
公开(公告)日：2019-02-28
申请号：US16039162
申请日：2018-07-18
申请人： TUNGALOY CORPORATION
发明人： Hikaru SHIROMA
IPC分类号： B23C5/20 , B23C5/22
CPC分类号： B23C5/207 , B23C5/109 , B23C5/223 , B23C2200/0461 , B23C2200/123 , B23C2200/203 , B23C2200/243 , B23C2200/246 , B23C2200/361 , B23C2210/203 , B23C2222/28
摘要： The present invention provides a cutting insert in which suitable honing is formed on a cutting edge. The cutting insert is provided with: two end surfaces opposing each other; a peripheral side surface extending between the two end surfaces; and a cutting edge formed on an intersecting ridge between at least one of the two end surfaces and the peripheral side surface. The cutting edge at least includes a major cutting edge and an inner cutting edge. Honing is provided on the major cutting edge and the inner cutting edge. A width of second honing of the inner cutting edge is narrower than a width of first honing of the major cutting edge, as viewed from a side of the end surfaces.

2. 发明申请

US20220250164A1 CUTTING INSERT 有权
公开(公告)号：US20220250164A1
公开(公告)日：2022-08-11
申请号：US17579677
申请日：2022-01-20
申请人： TUNGALOY CORPORATION
发明人： Hikaru SHIROMA , Satoru YOSHIDA
IPC分类号： B23B27/16
摘要： To provide a cutting insert that is properly manufactured with ease of use. A cutting insert has a first end face, a second end face on the opposite side from the first end face, and a peripheral side surface that is parallel to a central axis connecting the center of the first end face and the center of the second end face and connects the first end face and the second end face. A first major cutting edge is formed on the outer edge of the first end face. A first flank facing the first major cutting edge is formed between the first major cutting edge and the peripheral side surface and has a negative clearance angle α with respect to the peripheral side surface. The peripheral side surface includes a first side surface facing the first flank. Between the first flank and the first side surface, a recess line is formed to extend along a virtual edge line where a virtual plane extending from the first flank and a virtual plane extending from the first side surface cross each other, and the recess line is formed with a notch on the virtual edge line.

3. 发明申请

US20200230726A1 INDEXABLE CUTTING TOOL 审中-公开
公开(公告)号：US20200230726A1
公开(公告)日：2020-07-23
申请号：US16736056
申请日：2020-01-07
申请人： TUNGALOY CORPORATION
发明人： Hikaru SHIROMA
IPC分类号： B23G5/18 , B23G5/06
摘要： An indexable cutting tool that allows for stable clamping of cutting inserts and prevents contact between head parts of fastening members and workpieces is provided. Recesses with a bottom are formed in an upper surface of the cutting insert. At least part of an inner wall surface of the recess is a curved surface bulged toward a center axis of the recess. When the recess is divided into four, first to fourth, regions by a first imaginary reference plane parallel to a rotation axis of a body and a second imaginary reference plane perpendicular to the rotation axis, the second region is located on a center side and on a proximal side of the body. A tapered surface of the fastening member makes contact with the curved surface within the second region. A center axis line of the fastening member is inclined such that the head part opposite from a distal end part is located closer to the center side and to the proximal side of the body than the distal end part.

4. 发明申请

US20190351492A1 CUTTING INSERT AND CUTTING TOOL 审中-公开
公开(公告)号：US20190351492A1
公开(公告)日：2019-11-21
申请号：US16412965
申请日：2019-05-15
申请人： TUNGALOY CORPORATION
发明人： Hikaru SHIROMA , Satoru YOSHIDA , Yuki OIKAWA
IPC分类号： B23C5/20 , B23C5/06
摘要： 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.

5. 发明申请

US20220250174A1 CUTTING INSERT 有权
公开(公告)号：US20220250174A1
公开(公告)日：2022-08-11
申请号：US17569562
申请日：2022-01-06
申请人： TUNGALOY CORPORATION
发明人： Hikaru SHIROMA , Satoru YOSHIDA
IPC分类号： B23C5/10 , B23C5/20
摘要： Provided is a cutting insert which is resistant to breakage and can stably be restrained. A cutting insert configured as a vertically mounted insert has a first rake face adjacent to a first major cutting edge, a second rake face adjacent to a second major cutting edge, a restraint surface located further inward than the first and second rake faces to come into contact with a tool body when a second end surface is used, and a reinforcing portion projecting from the restraint surface. The reinforcing portion has a third projecting ridge provided to extend between the first and second rake faces and halve the restraint surface, a first projecting ridge connected to one end of the third projecting ridge to extend so as to cover at least a portion of a boundary between the first rake face and the restraint surface, and a second projecting ridge connected to another end of the third projecting ridge so as to cover at least a portion of a boundary between the second rake face and the restraint surface.

6. 发明申请

US20190047059A1 CUTTING INSERT AND CUTTING TOOL 审中-公开
公开(公告)号：US20190047059A1
公开(公告)日：2019-02-14
申请号：US16048257
申请日：2018-07-28
申请人： TUNGALOY CORPORATION
发明人： Hikaru SHIROMA , Yosuke YAMADA
IPC分类号： B23B51/04
摘要： Provided is a cutting insert capable of suppressing edge fracture when a work having high hardness is machined. A cutting insert includes two end surfaces having a plurality of corner parts and opposed to each other, a peripheral side surface extending between the two end surfaces, and a cutting edge formed at an intersecting edge between at least one of the two end surfaces and the peripheral side surface. The cutting edge has at least a first corner edge, a second corner edge, a major cutting edge, and an end cutting edge. The end cutting edge has a circular-arc shape, which projects outward, as viewed from the side of the end surface. The end cutting edge has a width which is from 15% to 50% of the width of the cutting insert. The end cutting edge has an arc radius which is from ⅓ to 1/1 of the width of the cutting insert.

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