Manufacture of wheels
AssigneeGKN Land Systems Limited
InventorEigil Egsgaard
Life of this patent
Estimating the term…
Abstract
A method of making at least a component for a rim base of a multi-piece wheel for a vehicle, comprising providing a workpiece of tubular configuration and hot upset forging the workpiece in press tooling to form a part thereof to a required configuration, wherein the part of the workpiece is heated to a forging temperature in situ in the press tooling, preferably by induction heating.
Claims24
A method of making at least a component for a rim base of a multi-piece wheel for a vehicle, comprising providing a workpiece of tubular configuration and hot upset forging the workpiece in press tooling to form a part thereof to a required configuration, wherein the method includes the steps of:
- heating a portion of the workpiece to a forging temperature in situ in the press tooling;
- upset forging the workpiece in a first upset forging operation in which the press tooling defines a first cavity having a first configuration, to increase a thickness defined by the portion of the workpiece to a first thickness, and to shape the portion of the workpiece to a first shape corresponding to the first cavity;
- and
- upset forging the workpiece in a second upset forging operation in the press tooling subsequent to the first upset forging operation, wherein the press tooling in the second upset forging operation defines a second cavity having a second configuration different than the first configuration, to increase the thickness of the portion of the workpiece to a second thickness greater than the first thickness, and to shape the portion of the workpiece to a second shape corresponding to the second cavity different than the first shape.
A method of making an article by hot upset forging a workpiece in press tooling, wherein the method includes at least the steps of:
- heating a portion of the workpiece to a forging temperature in situ in the press tooling;
- upset forging the workpiece in the press tooling in a first upset forging operation in which the press tooling defines a first cavity having a first configuration, to increase a thickness defined by the portion of the workpiece to a first thickness, and to shape the portion of the workpiece to a first shape corresponding to the first cavity;
- and
- thereafter again upset forging the workpiece in the press tooling in a second upset forging operation, wherein the press tooling in the second upset forging operation defines a second cavity having a second configuration different than the first configuration, to increase the thickness of the portion of the workpiece to a second thickness greater than the first thickness, and to shape the portion of the workpiece to a second shape corresponding to the second cavity different than the first shape.
Dependencies are inferred from the claim text.