Deflagration apparatus for making a cam shaft

Details Deflagration apparatus for making a cam shaft Deflagration apparatus for making a cam shaft

1994-02-18

1995-04-18

Watson, Robert C.

Metal working

Means to assemble or disassemble

By deforming

298881, 29254, 29252, F16H 5300

Patent

active

054066867

ABSTRACT:
An assembly (10) is disclosed for making a cam shaft from a plurality of cam lobes (14) having apertures (16) disposed therethrough and a hollow tubular shaft (12). The assembly (10) comprises a support arrangement (18) for supporting the cam lobes (14) along the hollow shaft (12); a solid or liquid propellant (20) disposed within the shaft; and a deflagrator (22) for deflagrating the propellant to introduce a sudden increase of gas pressure in the hollow tubular shaft (12) to expand the shaft radially and into engagement with the cam lobes (16) thereby securing the cam lobes to the shaft and preventing movement therebetween. The propellant (20) is disposed axially along the length of the shaft (12) to promote even radial expansion of the shaft. The propellant (20) is distributed evenly along the length of a thick plastic tube (24) which is inserted in the shaft (12).

REFERENCES:
patent: 4750250 (1988-06-01), Maus et al.
patent: 5085099 (1992-02-01), Hughes
patent: 5220727 (1993-06-01), Hochstein
patent: 5280672 (1994-01-01), Hochstein

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