CONTROLLED FRACTURE MACHINING METHOD FOR PRODUCING THROUGH-HOLES
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United States of America Patent
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Issued Date -
Oct 29, 2020
app pub date -
Mar 30, 2020
filing date -
Jul 15, 2009
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Abstract
A method and apparatus for producing a hole in any material by means of controlled fracturing using non-spindle CNC machining includes the steps of: fixturing a workpiece to the table of a non-spindle CNC holemaking machine tool. The cutting tool is then secured to the column of the machine tool and the face of the cutting tool is positioned perpendicular to the centerline of the proposed hole. The surface of the workpiece is approached with the cutting tool to a predetermined clearance level. Thereafter, the cutting tool is driven with sufficient linear force to induce instantaneous strain in the material of the workpiece to a depth necessary to create a hole of a desired size and shape using a drive mechanism. The cutting tool is then repositioned so that the face of cutting tool is perpendicular to centerline of a subsequent hole to be produced.
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