Cutting insert and cutting tool
AssigneeTungaloy Corporation
InventorKedar Suresh Bhagath
Life of this patent
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Abstract
An upper surface of a cutting insert includes a first rake face and a second seating surface. A lower surface of the cutting insert includes a second rake face and a first seating surface. The cutting edge includes a first cutting edge portion formed at a crossing edge line portion between the first rake face and a flank face and a second cutting edge portion formed at a crossing edge line portion between the second rake face and the flank face. The first cutting edge portion and the crossing edge line portion between the first seating surface and the flank face are positioned opposite each other. The second cutting edge portion and the crossing edge line portion between the second seating surface and the flank face are positioned opposite each other.
Claims19
A cutting insert formed like a plate and comprising a seating surface and a cutting edge formed thereon, the seating surface formed like a plate and serving as an abutting surface when the cutting insert is attached to a tool main body, the cutting edge being formed at a crossing edge line portion between a rake face and a flank face provided on a side surface of the plate,
- wherein the plate includes an upper surface with a first rake face and a second seating surface formed thereon and a lower surface with a second rake face and a first seating surface formed thereon,
- the cutting edge comprises a substantially circular-arc-shaped first cutting edge portion formed at a crossing edge line portion between the first rake face formed on the upper surface of the plate and a first flank face portion formed on the side surface of the plate, and a substantially circular-arc-shaped second cutting edge portion formed at a crossing edge line portion between the second rake face formed on the lower surface of the plate and a second flank face portion formed on the side surface of the plate,
- between the upper surface and lower surface of the plate, the substantially circular-arc-shaped first cutting edge portion and a crossing edge line portion between the first seating surface and the first flank face portion are positioned opposite each other, and
- between the upper surface and lower surface of the plate, the substantially circular-arc-shaped second cutting edge portion and a crossing edge line portion between the second seating surface and the second flank face portion are positioned opposite each other.
A plate-like cutting insert comprising:
- an upper surface and a lower surface facing in opposite directions;
- a side surface connecting the upper and lower surfaces, the side surface comprising a flank face and an abutting surface;
- wherein:
- the upper surface has first rake face and a second seating surface formed thereon;
- the lower surface has with a second rake face and a first seating surface formed thereon,
- a substantially circular-arc-shaped first cutting edge portion is formed at a crossing edge line portion between the first rake face formed on the upper surface and a first flank face portion formed on the side surface;
- a substantially circular-arc-shaped second cutting edge portion is formed at a crossing edge line portion between the second rake face formed on the lower surface and a second flank face portion formed on the side surface;
- between the upper surface and lower surface of the plate, the first cutting edge portion and a crossing edge line portion between the first seating surface and the first flank face portion are positioned opposite each other, and
- between the upper surface and lower surface of the plate, the second cutting edge portion and a crossing edge line portion between the second seating surface and the second flank face portion are positioned opposite each other.
Dependencies are inferred from the claim text.