Back to results
US 10,076,788 B2Granted
Cutting insert with chip-control arrangement
AssigneeIscar, Ltd.
InventorRoman Krishtul
Life of this patent
Estimating the term…
Abstract
A cutting insert has a cutting corner, having a bisector, located on a top surface of the cutting insert. A chip-control arrangement is located at the cutting corner. The chip-control arrangement includes a projection protruding from the top end face and that extends longitudinally in a direction transverse to, and to opposites sides of, the bisector. The chip-control arrangement also includes a protrusion protruding from the top end face and comprising a protrusion ridge that extends from the projection towards a corner cutting edge at the cutting corner.
Claims21
A cutting insert (20) comprising:
- opposing top and bottom end faces (24, 26) and first and second side surfaces (28A, 28B) extending therebetween;
- a central axis (C) extending through the top and bottom end surfaces (24, 26) and defining an upward direction (DU) and a downward direction (DD) of the insert;
- a corner surface (30A) connecting the first and second side surfaces (28A, 28B) and intersecting the top end face (24) to form a corner cutting edge (32);
- a cutting corner (40A), located on the top end face (24) adjacent the corner cutting edge (32), the cutting corner (40A) having a bisector (B);
- and
- a chip-control arrangement (22) located at the cutting corner (40A) and comprising:
- a projection (44) protruding from the top end face (24) and extending longitudinally in a direction transverse to, and to opposites sides of, the bisector (B), the projection (44) comprising two opposing projection extremities (46A, 46B) and an elongated surface (48) extending therebetween, the elongated surface (48) inclining upwardly from the top end face (24) in a direction away from the corner cutting edge (32);
- and
- a protrusion (68) protruding from the top end face (24) and comprising a protrusion ridge (70) which, in a top view of the cutting corner, is longer in a second direction along the bisector (B) than in a first direction perpendicular to the bisector (B) and extends longitudinally lengthwise along the bisector (B), from the elongated surface (48) in a direction towards the corner cutting edge (32);
- wherein
- in a top view of the cutting corner (40A):
- the projection (44) has a projection length (L′) measured in the first direction perpendicular to the bisector (B);
- the projection (44) has a maximum projection width (W) measured in the second direction along the bisector (B), and
- the maximum projection width (W) is smaller than the projection length (L′);
- the protrusion (68) is lower than the projection (44), in relation to the upward direction (DU);
- and
- in a cross-sectional view taken in a plane along, and through, a longitudinal extension of the protrusion ridge (70), the protrusion ridge (70) is concavely curved.
14 more elements
A cutting insert (20) comprising:
- opposing top and bottom end faces (24, 26) and first and second side surfaces (28A, 28B) extending therebetween;
- a central axis (C) extending through the top and bottom end surfaces (24, 26) and defining an upward direction (DU) and a downward direction (DD) of the insert;
- a corner surface (30A) connecting the first and second side surfaces (28A, 28B) and intersecting the top end face (24) to form a corner cutting edge (32);
- a cutting corner (40A), located on the top end face (24) adjacent the corner cutting edge (32), the cutting corner (40A) having a bisector (B);
- and
- a chip-control arrangement (22) located at the cutting corner (40A) and comprising:
- a projection (44) protruding from the top end face (24) and extending longitudinally in a direction transverse to, and to opposites sides of, the bisector (B), the projection (44) comprising two opposing projection extremities (46A, 46B) and an elongated surface (48) extending therebetween, the elongated surface (48) inclining upwardly from the top end face (24) in a direction away from the corner cutting edge (32);
- and
- a protrusion (68) protruding from the top end face (24) and comprising a protrusion ridge (70) which, in a top view of the cutting corner, is longer in a second direction along the bisector (B) than in a first direction perpendicular to the bisector (B) and extends longitudinally lengthwise along the bisector (B), from the elongated surface (48) in a direction towards the corner cutting edge (32);
- wherein
- the protrusion (68) is lower than the projection (44), in relation to the upward direction (DU);
- in a cross-sectional view taken in a plane along, and through, a longitudinal extension of the protrusion ridge (70), the protrusion ridge (70) is concavely curved;
- and
- in a cross-sectional view taken in a plane perpendicular to, and through, a longitudinal extension of the projection (44), the elongated surface (48) comprises an upwardly extending convex portion (50).
11 more elements
A cutting insert (20) comprising:
- opposing top and bottom end faces (24, 26) and first and second side surfaces (28A, 28B) extending therebetween;
- a central axis (C) extending through the top and bottom end surfaces (24, 26) and defining an upward direction (DU) and a downward direction (22) of the insert;
- a corner surface (30A) connecting the first and second side surfaces (28A, 28B) and intersecting the top end face (24) to form a corner cutting edge (32);
- a cutting corner (40A), located on the top end face (24) adjacent the corner cutting edge (32), the cutting corner (40A) having a bisector (B);
- and
- a chip-control arrangement (22) located at the cutting corner (40A) and comprising:
- a projection (44) protruding from the top end face (24) and extending longitudinally in a direction transverse to, and to opposites sides of, the bisector (B), the projection (44) comprising two opposing projection extremities (46A, 46B) and an elongated surface (48) extending therebetween, the elongated surface (48) inclining upwardly from the top end face (24) in a direction away from the corner cutting edge (32);
- and
- a protrusion (68) protruding from the top end face (24) and comprising a protrusion ridge (70) which, in a top view of the cutting corner, is longer in a second direction along the bisector (B) than in a first direction perpendicular to the bisector (B) and extends longitudinally lengthwise along the bisector (B), from the elongated surface (48) in a direction towards the corner cutting edge (32);
- wherein
- the protrusion (68) is lower than the projection (44), in relation to the upward direction (DU);
- in a cross-sectional view taken in a plane along, and through, a longitudinal extension of the protrusion ridge (70), the protrusion ridge (70) is concavely curved;
- and
- in a cross-sectional view taken in a plane along, and through, a longitudinal extension of the projection (44), each of the projection extremities (46A, 46B) comprises a respective extremity convex portion (54).
11 more elements
A cutting insert (20) comprising:
- opposing top and bottom end faces (24, 26) and first and second side surfaces (28A, 28B) extending therebetween;
- a central axis (C) extending through the top and bottom end surfaces (24, 26) and defining an upward direction (DU) and a downward direction (DD) of the insert;
- a corner surface (30A) connecting the first and second side surfaces (28A, 28B) and intersecting the top end face (24) to form a corner cutting edge (32);
- a cutting corner (40A), located on the top end face (24) adjacent the corner cutting edge (32), the cutting corner (40A) having a bisector (B);
- a chip-control arrangement (22) located at the cutting corner (40A) and comprising:
- a projection (44) protruding from the top end face (24) and extending longitudinally in a direction transverse to, and to opposites sides of, the bisector (B), the projection (44) comprising two opposing projection extremities (46A, 46B) and an elongated surface (48) extending therebetween, the elongated surface (48) inclining upwardly from the top end face (24) in a direction away from the corner cutting edge (32);
- and
- a protrusion (68) protruding from the top end face (24) and comprising a protrusion ridge (70) which, in a top view of the cutting corner, is longer in a second direction along the bisector (B) than in a first direction perpendicular to the bisector (B) and extends longitudinally lengthwise along the bisector (B), from the elongated surface (48) in a direction towards the corner cutting edge (32);
- wherein
- the protrusion (68) is lower than the projection (44), in relation to the upward direction ((DU);
- in a cross-sectional view taken in a plane along, and through, a longitudinal extension of the protrusion ridge (70), the protrusion ridge (70) is concavely curved;
- and
- a central island (76) comprising:
- a raised island upper surface (78) at least partially surrounded by an island inclined surface (80), the central island (76) having an elongated nose portion (82) directed towards the corner cutting edge (32);
- wherein
- the elongated surface (48) further comprises an elongated surface uppermost area (62) which, in relation to the upward direction (DU), is lower than a lowermost central island point (84) on the raised island upper surface (78).
13 more elements
A cutting insert (20) comprising:
- opposing top and bottom end faces (24, 26) and first and second side surfaces (28A, 28B) extending therebetween;
- a central axis (C) extending through the top and bottom end surfaces (24, 26) and defining an upward direction (DU) and a downward direction (DD) of the insert;
- a corner surface (30A) connecting the first and second side surfaces (28A, 28B) and intersecting the top end face (24) to form a corner cutting edge (32);
- a cutting corner (40A), located on the top end face (24) adjacent the corner cutting edge (32), the cutting corner (40A) having a bisector (B);
- and
- a chip-control arrangement (22) located at the cutting corner (40A) and comprising:
- a projection (44) protruding from the top end face (24) and extending longitudinally in a direction transverse to, and to opposites sides of, the bisector (B), the projection (44) comprising two opposing projection extremities (46A, 46B) and an elongated surface (48) extending therebetween, the elongated surface (48) inclining upwardly from the top end face (24) in a direction away from the corner cutting edge (32);
- and
- a protrusion (68) protruding from the top end face (24) and comprising a protrusion ridge (70) which, in a top view of the cutting corner, is longer in a second direction along the bisector (B) than in a first direction perpendicular to the bisector (B) and extends longitudinally lengthwise along the bisector (B), from the elongated surface (48) in a direction towards the corner cutting edge (32);
- wherein
- the protrusion (68) is lower than the projection (44), in relation to the upward direction (DU);
- in a cross-sectional view taken in a plane along, and through, a longitudinal extension of the protrusion ridge (70), the protrusion ridge (70) is concavely curved;
- the protrusion (68) further comprises two protrusion side surfaces (72) with the protrusion ridge (70) extending therebetween;
- and
- in a cross-sectional view taken in a plane perpendicular to, and through, a longitudinal extension of the protrusion ridge (70), each of the two protrusion side surfaces (72) comprises a respective protrusion concave portion (74).
12 more elements
Dependencies are inferred from the claim text.