Patent ID: 8500988

Claim:
An ELID, electrolytic in-process dressing, honing device comprising: (a) a honing tool positionable above a workpiece having a hollow cylindrical inner surface to be honed, wherein the honing tool is vertically movable and rotationally drivable about a vertical rotation axis while rockably suspended from an upper end; and (b) a honing guide positioned in proximity to an upper portion of the workpiece to guide the honing tool to the hollow cylindrical inner surface, wherein the honing tool has i. a fixed guide having a predetermined radius R from the vertical rotation axis to an outer peripheral surface of the fixed guide; and ii. a plurality of honing stones having outer peripheral surfaces movable in parallel from a diameter-increased position outside the radius R to a diameter-reduced position inside the radius R and operable to be electrolytically dressed, and wherein the honing guide has a hollow cylindrical ELID electrode having an inner surface for guiding the outer peripheral surface of the fixed guide of the honing tool and the hollow cylindrical ELID electrode is subjectable to a negative voltage, and wherein the honing guide has a corrosion-resistant electrode positioned below the ELID electrode, proximate the upper portion of the workpiece, and the corrosion-resistant electrode is subjectable to a positive voltage.