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US 5,655,860 AGranted
Milling cutter and method of milling
AssigneeKennametal Inc.
InventorEdward J. Oles
Life of this patent
Estimating the term…
Abstract
A milling cutter for milling a workpiece comprising a milling head rotatable about its central longitudinal axis. A milling head carries at least one milling insert of a first grade which presents a cutting edge. The milling head carries a wiper insert of a second grade which presents a wiping edge.
Claims26
A method of milling a workpiece comprising the steps of:
- providing a milling head with a central longitudinal axis, and a forward face;
- providing a milling insert, having a cutting edge, being carried by the milling head wherein said milling insert is of a first grade of material having a substrate with a diamond film thereon so as to overlay said cutting edge thereof;
- providing a wiper insert, having a wiping edge, being carried by the milling head wherein the wiper insert is made from a second grade of material different from the first grade of material of said milling insert;
- rotating the milling head about its central longitudinal axis;
- moving the milling head and the workpiece relative to one another so that the milling head engages the workpiece so as to mill the workpiece;
- and
- moving the milling head and the workpiece relative to one another so that the milling head exits the workpiece thereby leaving the milled surface without a burr.
4 more elements
A method of milling a workpiece comprising the steps of:
- providing a milling head with a central longitudinal axis, and a forward face;
- providing at least one milling insert, having a cutting edge, being carried by the milling head wherein said milling insert has a first nose radius and wherein said milling insert comprises a first grade of material having a substrate with a thin diamond film thereon so as to overlay said cutting edge;
- providing a wiper insert, having a wiping edge, being carried by the milling head wherein the wiper insert has a second nose radius;
- and wherein said wiper insert is of a second grade of material different from said first grade of material;
- and wherein said second nose radius is larger than said first nose radius;
- rotating the milling head about its central longitudinal axis;
- moving the milling head and the workpiece relative to one another so that the milling head engages the workpiece so as to mill the workpiece;
- and
- moving the milling head and the workpiece relative to one another so that the milling head exits the workpiece thereby leaving the milled surface without a burr.
6 more elements
A method of milling a workpiece comprising the steps of:
- providing a milling head with a central longitudinal axis, and a forward face;
- providing a milling insert, having a cutting edge, being carried by the milling head wherein said milling insert is of a first grade of material having a cemented carbide substrate with a diamond film thereon so as to overlay said cutting edge thereof;
- providing a wiper insert, having a wiping edge, being carried by the milling head wherein the wiper insert is made from a second grade of material different from the first grade of material of said milling insert;
- wherein said wiper edge projects a greater distance from the forward face of the milling head than does the cutting edge of the milling insert;
- rotating the milling head about its central longitudinal axis;
- moving the milling head and the workpiece relative to one another so that the milling head engages the workpiece so as to mill the workpiece;
- and
- moving the milling head and the workpiece relative to one another so that the milling head exits the workpiece thereby leaving the milled surface without a burr.
5 more elements
Dependencies are inferred from the claim text.