Back to results
US 4,646,479 AGranted
Deburring method
AssigneeAvco Corporation
InventorsKenneth E. Walker, Anthony V. Forte, Jr.
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeAvco Corporation
InventorsKenneth E. Walker, Anthony V. Forte, Jr.
Estimating the term…
A deburring method is presented wherein a cylindrical brush rotationally contacts the workpiece. The brush includes a mandrel having a central axle to provide support during use. To the mandrel is attached a multiplicity of long bristles. Each bristle is flexible and has impregnated therein a plurality of abrasive particles. The population density of the bristles on the brush is such that the outwardly extending ends can readily flex both in the plane of rotation and sidewise along the lengthwise dimension of the brush. Setting the brush so that the bristle ends overlap the surface of the workpiece being deburred, each bristle makes a slapping contact therewith. This results in one to two inches of each bristle being dragged endwise across the surface of the workpiece. The endwise movement of each bristle causes the abrasive particles imbedded therein to abrade the sharp edges of the workpiece. An automatic conveyor may be used to feed workpiece stock past the rotating brush at a predetermined rate.
A method of deburring an edge of a structural member workpiece with a strip brush having groups of flexible bristles arranged in strips and extending normally in a generally radially extending erect condition, each bristle having a tip and being formed of abrasive impregnated fibrous material over a substantial working section extending from the tip, the length, flexibility and abrasive fibrous material of the bristles and their population density and spacing between the strips being such that when the brush is rotated axially the bristles flex axially and in the plane of rotation of the brush, the method comprising the steps of first, transporting the workpiece and the brush toward each other by relative linear motion having a component normal to the axis of rotation of said brush and second, maintaining the working sections of the bristles in contact with the edge while rotating the brush axially in a predetermined speed range so that the working sections of the bristles strike said edge and flex and make slapping overlapping contact with the workpiece and the working sections are dragged across and along the edge to cause the impregnated fibers to remove material from the edge and to deburr said edge and surfaces forming said edge.
The process of deburring a structural workpiece having an edge comprising the steps of
Dependencies are inferred from the claim text.