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Abstract

An improved deburring brush is presented which is useful in processing aerospace parts of considerable length and surface complexity. The brush includes a cylindrical hub for providing support during use. A multiplicity of brush elements of the channel strip type are attached at regular intervals around the periphery of the hub. Attachment is typically by use of retaining strips which hold the brush strips in lengthwise channels cut in the hub surface. Each brush element includes a longitudinal metal strip bent into a generally U-shape to form a rear wall and two converging sidewalls. Bristle fibers are then laid side by side in a row, then collectively folded at their middles around a core wire for insertion into the U-shaped channel which is then compressed so that the sidewalls press against the multiplicity of protruding bristles. Each bristle is flexible and has impregnated therein a plurality of abrasive particles. The outwardly extending ends of each bristle readily flex in the plane of rotation. When the brush is set above the workpiece so that the bristle ends overlap the surface being deburred, each bristle makes a slapping contact therewith. To greatly improve the service life of the brush an elastomeric substance is applied to the surface of the bristles at and immediately adjacent the juncture of the bristles and the U-shaped channel in which they are clamped.

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