Cutting insert and cutting tool including same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11780019
APP PUB NO 20220250175A1
SERIAL NO

17585890

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Chip discharge control is further improved. A cutting insert includes an upper surface, a lower surface, a screw hole having an axis penetrating from the upper surface to the lower surface, a peripheral side surface, and a major cutting edge, a wiper edge, and an inner edge formed in an intersecting region between the upper surface and the peripheral side surface. In a side view in which the peripheral side surface on which the inner edge is formed is seen from a direction perpendicular to the axis, the inner edge includes a recessed part recessed toward the lower surface, a length DL of the inner edge on one side of the recessed part in the side view is longer than a length DR of the inner edge on the other side of the recessed part, a lowest point of the inner edge is at a position lower than a flat part of the upper surface, and at least a part of the inner edge on the one side is at a position higher than the flat part of the upper surface. A cutting edge angle φ23L of the inner edge on the one side of the recessed part is larger than a half of a cutting edge angle φ23R of the inner edge on the other side of the recessed part.

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Patent Owner(s)

Patent OwnerAddress
TUNGALOY CORPORATIONIWAKI-SHI FUKUSHIMA 970-1144

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aso, Takahiro Iwaki, JP 25 112

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