Surface treatment method with rapid repetitive motion of an ultra high pressure liquid stream
OwnerJohn D. Shepherdinventor
Life of this patent
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Abstract
A workpiece surface is treated in a cleaning, polishing or milling or similar surface treatment operation by a waterjet head. The head is located near the workpiece surface with its axis intersecting the workpiece surface and is held so that it dies not rotate about its axis. The waterjet head is driven so that its axis rapidly and repetitively moves in a closed path. The waterjet head is mounted in an eccentric member and the closed path is a surface of revolution. In one arrangement, the closed path described by the axis of the waterjet head is a circular cylinder. In another arrangement, the waterjet head is pivotally mounted and resiliently supported so that the closed path is conical.
Claims10
A method for treating a workpiece surface with a high pressure and high velocity liquid stream discharged onto the workpiece surface from the outlet nozzle of a waterjet head having a longitudinal axis, said method comprising:
- locating the waterjet head adjacent to the workpiece surface with the axis of the waterjet head intersecting the workpiece surface;
- holding the waterjet head and its outlet nozzle so they do not rotate around the waterjet head axis;
- and
- driving the waterjet head so that the waterjet head axis repetitively moves along a closed path.
Dependencies are inferred from the claim text.