Aluminum driveshaft having reduced diameter end portion

Details Aluminum driveshaft having reduced diameter end portion Aluminum driveshaft having reduced diameter end portion

1995-10-19

1997-07-01

Stodola, Daniel P.

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Shafting

Hollow or layered shaft

464134, F16C 302

Patent

active

056430930

ABSTRACT:
A driveshaft includes a center portion having a larger diameter, an end portion having a reduced diameter, and a diameter reducing portion positioned between the center and end portions. The reduced diameter end portion of the driveshaft is secured to a reduced diameter tube yoke. This facilitates the introduction of tooling during assembly of a universal joint. The driveshaft is formed by a method which involves first heat treating the driveshaft to a relatively soft temper, then swaging the end portion of the driveshaft, and then heat treating the driveshaft again to a relatively hard temper. In more detail, a driveshaft is provided having a predetermined first diameter, the driveshaft being heat treated to achieve a relatively soft temper so as to possess a desired elongation factor. This allows the end portion of the driveshaft to be swaged to reduce the diameter thereof to a second predetermined diameter. After swaging, the driveshaft is heat treated again to achieve a relatively hard temper to meet the strength requirements for use.

REFERENCES:
patent: 2559485 (1951-07-01), Warner
patent: 3479030 (1969-11-01), Merola
patent: 3854316 (1974-12-01), Wilson
patent: 4358284 (1982-11-01), Federmann et al.
patent: 4527978 (1985-07-01), Zackrisson
patent: 4561799 (1985-12-01), Arena
patent: 4788841 (1988-12-01), Calhoun et al.
patent: 5320579 (1994-06-01), Hoffmann
patent: 5397272 (1995-03-01), Smiley et al.

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