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AssigneeMinnesota Mining and Manufacturing Company
InventorDouglas E. Earl
Estimating the term…
A method and apparatus is provided for reducing optical chatter for use with a machine that is adapted to perform an operation on a surface of a workpiece by bringing a rotating roller into contact with the surface as the workpiece is advanced past the roller. The roller of the machine has a central axis and is powered to rotate about the central axis. The apparatus comprises an oscillation inducing device that is operably coupled to the roller for inducing an axial oscillation in the roller. The frequency of the induced oscillation of the roller is substantially greater than the frequency of rotation of the roller. The method for reducing optical chatter comprises the step of imparting axial oscillations to the roller during rotation of the roller, the imparted oscillations being of substantially greater frequency than the frequency of rotation of the roller.
An optical chatter reducing apparatus for use with a machine adapted to finish a surface of a workpiece by applying an abrasive media to the surface with a roller as the workpiece is advanced past the roller, the roller having a central axis and being powered to rotate about said axis, the apparatus comprising:
An apparatus for reducing optical chatter marks on a surface of a workpiece, in combination with a finishing machine having a roller for applying an abrasive media to a workpiece to be finished, the roller being powered and rotating about a central axis, the apparatus comprising oscillation means operably coupled to the roller for imparting axial oscillations to the roller relative to the workpiece during rotation of the roller, the oscillations being of sufficiently greater frequency than the frequency of rotation of the roller to mask the optical chatter marks, wherein the oscillations have an amplitude of between 0.025 to 0.127 millimeters and a spring to bias said roller along the central longitudinal axis of said roller to urge a cam driver means into contact with a cam race.
A method for reducing optical chatter marks on a surface of a workpiece imparted to the surface by a finishing machine having a roller being rotationally driven and rotating on an axial shaft, the method comprising the steps of imparting axial oscillations to the roller during rotation of the roller, with a cam driver and cam race, and biasing said roller with a spring toward said cam race the oscillations being of greater frequency than the frequency of rotation of the roller, wherein the oscillations have an amplitude of between 0.025 and 0.0127 millimeters.
Dependencies are inferred from the claim text.