Polisher
AssigneeCrawford-Swift Limited
InventorRichard W. Turnbull
Life of this patent
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Abstract
A polishing apparatus (10) comprises a main arm (12) mounted for horizontal and vertical movement. The arm (12) is provided with a rotating belt (32) of abrasive material for polishing purposes. An article to be polished, for example a dished end is mounted on a table drive (24). The arm (12) carries an X-Y plate (28) including a contact wheel (30) movable relative to the arm (12) along two orthogonal axes. Cylinders (38, 40) bias the contact wheel toward the article to be polished. In use, the arm (12) is swept across the radius of the dished end so as to "map" the profile to be polished and thereafter the arm (12) follows this profile at a preset "off-set" of 50-75 millimeters. Minor irregularities of the surface are "ridden" by the X-Y plate (28) against the constant bias of the pneumatic cylinder without being ground away.
Claims8
A polishing apparatus which comprises a main arm movably mounted to a housing for movement in horizontal and vertical directions, the arm being provided with a contact wheel having abrasive material for polishing purposes, a drive mechanism for rotating said wheel for moving said abrasive material there along with said wheel and against an article to be polished, and means for mounting and rotating the article to be polished, said polishing apparatus characterized in that the arm carries a mechanism including the contact wheel, said mechanism including said wheel being slideably mounted to said arm for relative motion along two orthogonal axes, and an associated pneumatic cylinder providing biasing force along a respective orthogonal axis for biasing said wheel and abrasive material against the article.
Dependencies are inferred from the claim text.