Method for electrochemical deburring
Abstract
Abstract A METHOD AND APPARATUS TO ELECTRO-CHEMICALLY MACHINE APERTURES OF A WORK PIECE WHICH MAY BE A CUP-LIKE STRUCTURE SUCH AS THE COVER OF A CARBURETOR OR THE LIKE. THE APERTURES MAY (1) OPEN TO THE ATMOSPHERE OR (2) INTERSECT WITH OTHER APERTURES OF GREATER COMBINED SIZE OR (3) HAVE PORTIONS OF INCREASED DIAMETER. WHEN ELECTROYLTE UNDER PRESSURE IS INTRODUCED BETWEEN THE NEGATIVE ELECTRODE POSITIONED ADJACENT THE APERTURE OF THE WORK PIECE AND THE POSITIVELY CHARGED WORK PIECE, DUE TO THE INCREASED AREA BEYOND THE APERTURE, THE FLOW OF THE ELECTROLYTE UNDER PRESSURE CAUSES TURBULENCE OR TEMPORARY EDDY CURRENTS FROM A FIRST LAMINAR FLOW OF THE ELECTROLYTE THROUGH THE APERTURE TO EITHER THE UNRESTRICTED FLOW TO THE ATMOSPHERE OR TO A SECOND LAMINAR FLOW OF THE ELECTROLYTE THROUGH THE INCREASED DIAMETER PORTION OF THE APERTURE, DUE TO THE REDUCED PRESSURE. THE RESULTANT TURBULENCE EFFICIENTLY SCRUBS THE ANODIC FILM AND EFFECTIVELY REMOVES BURRS AROUND THE EDGES OF THE EXIT END OF THE APERTURE WITH MINIMAL STOCK REMOVAL ALONG THE WALL OF THE APERTURES.
Inventors
- 👤 David W Sickels
Bibliographic Details
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