Method and apparatus for electrochemically finishing airfoil edg

Details Method and apparatus for electrochemically finishing airfoil edg Method and apparatus for electrochemically finishing airfoil edg

1979-06-20

1980-08-12

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

2041295, 204224M, C25F 314, B23P 104, B23P 114, B23P 120

Patent

active

042171903

ABSTRACT:
Disclosed is apparatus and method for electrochemically finishing the edges of airfoils and other thin edged objects. When the edge on an airfoil varies in thickness along its length, a tapered electrode is provided which has both a decreased diameter and increased spacing distance, providing a means for obtaining an edge with a radius proportioned to the thickness. Generally, in the system having an electrode with a unit surface area A, and with an electrode-workpiece surface spacing distance S, both A and S are changed so that the ratio A/S is lowered for electrode portions proximate to edge portions having lowered thickness.

REFERENCES:
patent: 3459645 (1969-08-01), Wilson et al.
patent: 3816272 (1974-06-01), Joslin
patent: 3849273 (1974-11-01), Johnson
patent: 3970538 (1976-07-01), Lucas

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