Method of manufacturing variable diameter driveshaft

Details Method of manufacturing variable diameter driveshaft Method of manufacturing variable diameter driveshaft

1987-05-11

1988-06-21

Jones, David

Metal deforming

By application of fluent medium, or energy field

Using fixed die

72 60, 29421R, B21D 2212

Patent

active

047518359

ABSTRACT:
A driveshaft for a motor vehicle having a double tapered tubular body with its largest diameter near its midpoint and its least diameter adjacent its opposite ends. The body is substantially and continuously tapered from the midpoint to each of the ends. The tapered section of the tubular body has its outer surface positioned near a surface defined by a parabola revolved about the longitudinal axis of the body. The parabola has its apex at the midpoint of the driveshaft and intersects two points on the longitudinal axis at approximately the mounting planes where the driveshaft is supported at its ends. In addition, a method of manufacturing the tapered tubular body of the driveshaft includes a mold having a tapered wall section and cylindrical shaped end sections to receive the cylindrical tube. The cylindrical tube is able to receive varying lengths of elastomeric plugs which can be sequentially compressed to deform the tube outwardly to abut the tapered wall section of the mold.

REFERENCES:
patent: 1000574 (1911-08-01), Bauroth
patent: 1700867 (1929-02-01), Wolfe
patent: 1734268 (1929-11-01), Moorhouse
patent: 2380952 (1945-08-01), Dewey
patent: 2742873 (1956-04-01), Moore
patent: 3229488 (1966-01-01), Smith
patent: 3383901 (1968-05-01), Stalter
patent: 3659434 (1972-05-01), Wolfe
patent: 3685327 (1972-08-01), Nakamura

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