Method and apparatus for cold extruding universal seal crosspieces
AssigneeMasco Industries, Inc.
InventorGuy H. Bottger
Life of this patent
Estimating the term…
Abstract
A spider or cross for a universal joint is manufactured by first forging the basic configuration of the cross and thereafter extruding the trunnions into their final configuration. The component is initially hot or warm forged into its basic configuration including a central body and a plurality of trunnions. Thereafter, the trunnions are simultaneously extruded into their final configuration eliminating machining and a loss of materials. As a result, the grain flow of the component is not disrupted for a more reliable part.
Claims7
A process of manufacturing an integral metal component having a plurality of finished arms with specific diameter, configuration and finish comprising:
- forging a base configuration of said component, said base configuration including an integral body and a plurality of protrusions corresponding to the number of finished arms of said component, said protrusions having a diameter greater than the desired diameter of the finished arms;
- positioning said base configuration in a die assembly having a plurality of die segments corresponding to the number of arms of said components;
- closing said die assembly such that said die segments engage said protrusions of said base configuration to longitudinally extrude said arms within said die segments to their final diameter, configuration and finish thereby forming said finished arms of said integral metal component;
- and
- opening said die assembly to release said component.
A process of manufacturing an integral metal component having a plurality of arms with a predetermined diameter, configuration and surface finish comprising:
- forging a base configuration of said component having an internal material grain flow, said base configuration including an integral hub and a plurality of protrusions extending radially outwardly from said hub, said protrusions having a greater diameter and an undesirable surface finish comparative to the finished arms of the component;
- longitudinally extruding said protrusions of said base configuration while supporting said hub to form finished arms of said component having the predetermined diameter, configuration and surface finish, said arms formed such that said internal material grain flow is uninterrupted.
Dependencies are inferred from the claim text.