Abrading – Abrading process – Hollow work
Reexamination Certificate
2005-01-25
2005-01-25
Wilson, Lee D. (Department: 3723)
Abrading
Abrading process
Hollow work
C451S051000, C451S065000, C451S107000
Reexamination Certificate
active
06846226
ABSTRACT:
Apparatus for removing a burr from an aperture in a workpiece, using a rotating deburring tool having a flexible or partly flexible shaft, an abrasive mechanism that rotates on the shaft and a collar that protects the workpiece from abrasion when the abrasive mechanism is being positioned for deburring. Optionally, the shaft and abrasive mechanism move laterally as they rotate. Optionally, a shaft holder includes a protective surrounding sleeve to catch or deflect any fragment of the shaft holder that might fly off. Optionally, the shaft and the workpiece rotate independently of each other. Two or more different abrasive mechanisms can be simultaneously attached to the shaft. The cross-sectional shape of the abrasive mechanism may be curvilinear and/or polygonal, depending upon shape of the workpiece surface. Optionally, a shaft restrictor receives the shaft and limits lateral motion of the rotating shaft. The shaft optionally includes a rotatable mass that provides additional rotational inertia after the shaft is initially spun up.
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LaRoux K. Gillespie, Deburring and Edge Finishing Handbook, 1999, pp. 237-288.
International Search Report; PCT/US01/20803.
Ojini Anthony
Wilson Lee D.
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