遊離砥粒によるガラスの加工

概要

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The present authors attempted to bore a glass plate using free-abrasives and a conventional drilling machine. Scratching and cracking action caused by the moving abrasives was applied to the working of the glass. The boring tool was a cylinder of 10mm diameter, having a drilled hole of 6mm diameter in the center and a cross slit of 2mm width. The drilled hole was filled with abrasives and water. The rotating boring tool set in the drill chuck was pressed against the glass plate in the casing(or holder). The casing prevents the abrasives and water working in the contact interface between the tool and the work from dispersing. The effect of the abrasives and tool material on the boring was investigated. The abrasives used were Green Carborundum (GC), Carborundum(C) and Alumina (A). The material of the tool was mild steel, aluminum and brass. The time for boring the glass plate of 1.8mm thickness was approximately 100 seconds using the mild steel-tool with Green Carborundum.
2004-10-29