Method for manufacturing a crankshaft for a combustion engine wi

Details Method for manufacturing a crankshaft for a combustion engine wi Method for manufacturing a crankshaft for a combustion engine wi

1995-09-29

1997-05-06

Bryant, David P.

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

74595, B21K 108

Patent

active

056259450

ABSTRACT:
A method for manufacturing a crankshaft for a combustion engine with several cylinders, especially for a large diesel engine, the crankshaft including for each cylinder a crank web unit comprising crank webs transverse with regard to the crankshaft and a crank pin connecting the crank webs. Separate crank web units are assembled one at a time to a uniform shaft blank corresponding to the entire length of the crankshaft and having a different diameter in different points so that the diameter is at its biggest in the central part of the shaft blank and decreases towards the both ends thereof. First a crank web unit intended to the point of the shaft blank with the biggest diameter is installed and fixed to its place and after that crank web units intended always in the order of their diameter to the next biggest points are installed and fixed to both sides thereof. Lastly the portions located between the crank webs of each crank web unit at the position of the crank pin are machined away from the shaft blank.

REFERENCES:
patent: 637515 (1899-11-01), Loutzky
patent: 2218928 (1940-10-01), Towler et al.
patent: 2773400 (1956-12-01), Sulger
patent: 4305311 (1981-12-01), McGill
patent: 5088345 (1992-02-01), Kemmler et al.

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