Abrading – Precision device or process - or with condition responsive... – Computer controlled
Patent
1997-08-08
2000-04-18
Scherbel, David A.
Abrading
Precision device or process - or with condition responsive...
Computer controlled
451 6, 451254, B24B 4900
Patent
active
060508760
ABSTRACT:
An automated apparatus for testing a plurality of sample wheels includes a grindstone, a first programmable servo motor coupled to the grindstone, a plurality sample wheels disposed about a circumference of the grindstone, and a second programmable servo motor coupled to each of the plurality of sample wheels. In addition, the automated apparatus also includes a controller that outputs a first control signal to the first programmable servo motor and a second control signal to the second programmable servo motor to provide a variable slip ratio between the grindstone and the plurality of sample wheels. The controller includes a simulator that simulates a plurality of road conditions and varies the plurality of slip ratios to simulate the plurality of road conditions. The automated apparatus also includes a first optical encoder that detects the angular velocity of the grindstone and that outputs a first signal and a plurality of second optical encoders that each detect the angular velocity of a corresponding sample wheel and output a second signal. The controller includes a processor that is responsive to the first output signal and the second output signal that computes, in situ, a free rolling diameter of each of the plurality of sample wheels. The processor also determines, in situ, a wear rate of each of the plurality of sample wheels. Moreover, the automated apparatus includes a variable powder delivery system that provides a uniform amount of aerosol powder to the interface of the grindstone and each of the plurality of sample wheels at a plurality of pumping rates to simulate variable road dust conditions.
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Bedard Maurice J.
Markowitz Stanley L.
Ouyang George
Roy Lawrence A.
Wolfrom Gary K.
Cabot Corporation
Nguyen Dung Van
Scherbel David A.
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