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US 2026/0199985 A1Published application
Turning tool and cutting insert therefor
AssigneeAB Sandvik Coromant
InventorsDavid WICKSTROM, Krister WIKBLAD, Ronnie LOF
Life of this patent
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AssigneeAB Sandvik Coromant
InventorsDavid WICKSTROM, Krister WIKBLAD, Ronnie LOF
Estimating the term…
The invention relates to a cutting insert (1, 40, 90) for a turning tool, the cutting insert comprising a first side (2) and a second side (3) arranged opposite each other and facing opposite directions, the first and second sides generally extending in respective first and second planes (P1, P2) that are parallel to each other, wherein the first side (2) comprises a first rake face (11). A central axis (L) of the cutting insert extends from the first side (2) to the second side (3) in a direction perpendicular to the first and second planes (P1, P2). The cutting insert comprises a peripheral surface (4) connecting the first side (2) and the second side (3), wherein the peripheral surface (4) includes a first relief surface (7) extending in parallel, or substantially in parallel, to the central axis. A first cutting edge (5) is arranged at the intersection between the first relief surface (7) and the first rake face (11), wherein the first cutting edge (5) comprises a first nose cutting edge (51). The cutting insert has a maximum thickness (t) measured from the first side (2) to the second side (3) in a direction parallel to the central axis (L), and the first relief surface (7) adjacent the first nose cutting edge (51) has a length of extension (h) in a direction parallel to the central axis (L) that is less than 75% of the maximum thickness (t) of the cutting insert (1). The invention also relates to a turning tool (10) comprising such cutting insert.
A cutting insert (1, 40, 90) for a turning tool, the cutting insert comprising:
A cutting insert according to any of the previous claims, wherein the first relief surface adjacent the first nose cutting edge has a length of extension (h) in a direction parallel to the central axis that is between 40% and 70% of the maximum thickness (t) of the cutting insert.
A cutting insert according to any of the previous claims, wherein the second side comprises a contact surface (36) arranged to abut a support surface in an insert seat of a turning tool.
A cutting insert according to any of the previous claims, wherein the first cutting edge (5) includes a first primary cutting edge (52) that is connected to the first nose cutting edge (51) and extends therefrom along the intersection between the first relief surface (7) and the first rake face (11).
A cutting insert according to any of the previous claims, wherein the peripheral surface comprises a second relief surface (8), and the first side (2) or the second side (3) comprises a second rake face (12), and wherein a second cutting edge (6) is arranged at the intersection between the second relief surface (8) and the second rake face (12), wherein the second cutting edge (6) comprises a second nose cutting edge (61), and the second relief surface (8) adjacent the second nose cutting edge (61) has a length of extension (h) in a direction parallel to the central axis (L) that is less than 75% of the maximum thickness (t) of the cutting insert.
A cutting insert (90) according to any of the previous claims, wherein the second side (3) comprises a first opposing rake face (91) opposite the first rake face (11), and wherein a first opposing cutting edge (93) is arranged at the intersection between the first opposing rake face (91) and the first relief surface (7).
A cutting insert (40, 90) according to any of the previous claims, wherein the cutting insert has a rhombic, or substantially rhombic, basic shape in a plan view of the first or second side.
Dependencies are inferred from the claim text.