Milling tool for machining fiber reinforced composites and multilayer cutting insert therefor
AssigneeIscar, Ltd.
InventorYaron Degany
Life of this patent
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Abstract
A multilayer cutting insert includes a first layer made of a first material and a second layer made of a second material. The first material is harder than the second material. The cutting insert has opposing first and second major side surfaces and a peripheral side surface which extends therebetween. The first major side surface is formed in the first layer and includes a non-uniform relief surface. The peripheral side surface is formed in the two layers and includes a non-uniform rake surface. The rake surface and the relief surface intersect at an edge, at least portion of which is a curved major cutting edge. The rake surface is formed in at least the first layer, and the relief surface is formed only in the first layer.
Claims28
A multilayer cutting insert (22) comprising a first layer (34) made of a first material and a second layer (36) made of a second material, the first material being harder than the second material,
- the multilayer cutting insert (22) comprising opposing first and second major side surfaces (38, 40) and a peripheral side surface (42) extending therebetween;
- the first major side surface (38) being formed in the first layer (34) and comprising a non-uniform relief surface (54);
- the peripheral side surface (42) being formed in the two layers and comprising a non-uniform rake surface (52), and the rake surface (52) and the relief surface (54) intersecting at an edge, at least portion of which is a curved major cutting edge (58);
- the rake surface (52) being formed in at least the first layer (34) and the relief surface (54) being formed only in the first layer (34), wherein
- the second layer (36) is devoid of cutting edges and relief surfaces.
A multilayer cutting insert (22) comprising a first layer (34) made of a first material and a second layer (36) made of a second material, the first material being harder than the second material,
- the multilayer cutting insert (22) comprising opposing first and second major side surfaces (38, 40) and a peripheral side surface (42) extending therebetween;
- the first major side surface (38) being formed in the first layer (34) and comprising a non-uniform relief surface (54);
- the peripheral side surface (42) being formed in the two layers and comprising a non-uniform rake surface (52), and the rake surface (52) and the relief surface (54) intersecting at an edge, at least portion of which is a curved major cutting edge (58);
- the rake surface (52) being formed in at least the first layer (34) and the relief surface (54) being formed only in the first layer (34), wherein:
- the major cutting edge (58) comprises a plurality of cutting edge sections (62);
- and
- one adjacent pair of the plurality of cutting edge sections (62) converge inwardly, and meet at a trough (53).
A multilayer cutting insert (22) comprising a first layer (34) made of a first material and a second layer (36) made of a second material, the first material being harder than the second material,
- the multilayer cutting insert (22) comprising opposing first and second major side surfaces (38, 40) and a peripheral side surface (42) extending therebetween;
- the first major side surface (38) being formed in the first layer (34) and comprising a non-uniform relief surface (54);
- the peripheral side surface (42) being formed in the two layers and comprising a non-uniform rake surface (52), and the rake surface (52) and the relief surface (54) intersecting at an edge, at least portion of which is a curved major cutting edge (58);
- the rake surface (52) being formed in at least the first layer (34) and the relief surface (54) being formed only in the first layer (34), wherein:
- the relief surface (54) comprises a non-uniform primary relief surface (55) which extends from the cutting edge (58) and connects with a secondary relief surface (56);
- and
- the primary relief surface (55) comprises non-coplanar primary relief surface sections (55′).
Dependencies are inferred from the claim text.