Method of making an engine crankshaft

Details Method of making an engine crankshaft Method of making an engine crankshaft

1987-12-03

1989-04-04

Echols, P. W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

295276, 164 761, 1642701, B23P 1500

Patent

active

048172570

ABSTRACT:
A method of manufacturing a crankshaft 10 comprises casting in place a hollow steel tube 18 into the crankshaft 10 and laser piercing bores 32 in at least the crank pins of the crankshaft to connect with the interior of the steel tube 18.
Laser piercing avoids the risk of blockage of the oil duct by the burrs which would result from conventional drilling.

REFERENCES:
patent: 954923 (1910-04-01), Brock
patent: 1255409 (1918-02-01), Gordon
patent: 2235450 (1941-03-01), Groene
patent: 2333859 (1943-11-01), Groene
patent: 3313016 (1967-04-01), Seulen et al.
patent: 3545891 (1970-12-01), Parker

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