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US 8,506,208 B2Granted
Shim plate for milling tools for chip removing machining as well as a milling tool having such a shim plate
AssigneeSandvik Intellectual Property AB
InventorTord Engström
Life of this patent
Estimating the term…
Abstract
A shim plate for milling tools for chip removing machining, including an upperside, an underside, and at least one side surface extending between the upperside and the underside and forming an angle ≦90° with the upperside. A through hole includes a first section mouthing in the upperside, and a second section mouthing in the underside and having a diameter that is smaller than a diameter of the first section. The upperside at least partially transforms into the side surface via an edge portion configured to be an active auxiliary chip-removing cutting edge upon failure of a cooperating cutting insert. The edge portion includes a chamfer surface that forms an obtuse angle (δ) with the upperside.
Claims36
A shim plate for milling tools for chip removing machining, comprising:
- an upperside, an underside, and at least one side surface extending between the upperside and the underside and forming an angle ≦90° with the upperside;
- and
- a through hole including a first section mouthing in the upperside, and a second section mouthing in the underside and having a diameter that is smaller than a diameter of the first section,
- wherein the upperside at least partially transforms into the side surface via an edge portion configured to be an active auxiliary chip-removing cutting edge upon failure of a cooperating cutting insert,
- wherein the edge portion includes a chamfer surface that forms an obtuse angle (δ) with the upperside, and
- wherein the through hole in the shim plate is not centrically placed in the shim plate.
3 more elements
A shim plate for milling tools for chip removing machining, comprising:
- an upperside, an underside, and at least one side surface extending between the upperside and the underside and forming an angle ≦90° with the upperside;
- and
- a through hole including a first section mouthing in the upperside, and a second section mouthing in the underside and having a diameter that is smaller than a diameter of the first section,
- wherein the upperside at least partially transforms into the side surface via an edge portion configured to be an active auxiliary chip-removing cutting edge upon failure of a cooperating cutting insert,
- wherein the edge portion includes a chamfer surface that forms an obtuse angle (δ) with the upperside, and
- wherein the chamfer surface is formed along a first side surface, but not along the other side surfaces.
3 more elements
A milling tool for chip removing machining, comprising:
- a basic body, which includes two ends between which a center axis (C1) extends, around which the basic body is rotatable and with which an envelope surface is concentric;
- an indexable milling insert, which includes an upperside, an underside and at least one clearance surface that extends between the upperside and the underside and connects to a chip-removing cutting edge;
- and
- a shim plate, comprising;
- an upperside against which the underside of the milling insert is pressed;
- an underside that is pressed against a bottom in a seat recessed in the basic body;
- at least one side surface extending between the upperside and the underside and forming an angle of ≦90° with the upperside;
- and
- a through hole extending between the upperside and the underside of the shim plate, the through hole including an upper section having a greater diameter than a lower section, to house a screw semi-permanently fixed in the basic body,
- wherein the upperside of the shim plate at least partially transforms into the side surface via an edge portion configured to be an auxiliary chip-removing cutting edge upon failure of the milling insert,
- wherein the edge portion of the shim plate includes a chamfer surface that is delimited between outer and inner boundary lines and forms an obtuse angle (δ) with the upperside of the shim plate, and
- wherein the underside of the milling insert projects radially a distance past the inner boundary line of the chamfer surface without projecting past the side surface of the shim plate.
9 more elements
A milling tool for chip removing machining, comprising:
- a basic body, which includes two ends between which a center axis (C1) extends, around which the basic body is rotatable and with which an envelope surface is concentric;
- an indexable milling insert, which includes an upperside, an underside and at least one clearance surface that extends between the upperside and the underside and connects to a chip-removing cutting edge;
- and
- a shim plate, comprising;
- an upperside against which the underside of the milling insert is pressed;
- an underside that is pressed against a bottom in a seat recessed in the basic body;
- at least one side surface extending between the upperside and the underside and forming an angle of ≦90° with the upperside;
- and
- a through hole extending between the upperside and the underside of the shim plate, the through hole including an upper section having a greater diameter than a lower section, to house a screw semi-permanently fixed in the basic body,
- wherein the upperside of the shim plate at least partially transforms into the side surface via an edge portion configured to temporarily be an auxiliary chip-removing cutting edge upon failure of the milling insert,
- wherein the edge portion of the shim plate includes a chamfer surface that is delimited between outer and inner boundary lines and forms an obtuse angle (δ) with the upperside of the shim plate, and
- wherein the through hole in the shim plate is not centrically placed in the shim plate;
- wherein the underside of the milling insert projects radially a distance past the inner boundary line of the chamfer surface.
10 more elements
Dependencies are inferred from the claim text.