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Electric/Discharge Machining Multiple Electrode Oscillating Head

IP.com Disclosure Number: IPCOM000081971D
Original Publication Date: 1974-Sep-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Brown, RE: AUTHOR

Abstract

Electrical discharge machining (EDM) is a standard technique used for working hard materials to precision tolerances by controlled electrical discharge erosion. In order to make patterns of holes which are accurately sized, it is useful to be able to make undersized holes first and then widen the holes to the diameters required.

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Electric/Discharge Machining Multiple Electrode Oscillating Head

Electrical discharge machining (EDM) is a standard technique used for working hard materials to precision tolerances by controlled electrical discharge erosion. In order to make patterns of holes which are accurately sized, it is useful to be able to make undersized holes first and then widen the holes to the diameters required.

This apparatus is a precision EDM device for enlarging a hole or pattern of holes in hard materials. The initial pattern of holes is produced by standard EDM techniques. Then the hole pattern 1 is accurately moved from the center of a drum 2 by adjusting a lead screw 3. The drum 2 rotates about an axis through its center 4 and as the hole pattern is now off the axis of rotation, the hole pattern oscillates and traces out wider circular holes 5 in the material being worked. The increase in the size of the holes 5 is determined by the distance the hole pattern is moved off the drum's axis 4 of rotation.

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