Method of making rotor blades of radial-axial hydraulic machines

Details Method of making rotor blades of radial-axial hydraulic machines Method of making rotor blades of radial-axial hydraulic machines

1977-08-24

1979-08-14

Larson, Lowell A.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

228159, 416213R, 113116W, 113116V, 113116D, B23P 1504

Patent

active

041640616

ABSTRACT:
A method of making rotor blades of radial-axial hydraulic machines, wherein a plain blade blank is obtained by welding together at least two sheet pieces that compose the blank in the direction of principal variation of the cross-sectional thickness thereof. The thickness of each of said sheet pieces is selected to be not less than a maximum cross-sectional thickness of the blank at its portion defined by said sheet piece. Then the blank is machined until the required blade outline is obtained, after which the blade blank bent to obtain the desired blade shape.

REFERENCES:
patent: 998897 (1911-07-01), Heath
patent: 1006209 (1911-10-01), Heath
patent: 1389146 (1921-08-01), Levasseur
patent: 1785543 (1930-12-01), Dornier
patent: 1984044 (1934-12-01), Sukohl
patent: 2295454 (1942-09-01), Cesare
patent: 3660882 (1972-05-01), Widowitz et al.

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