| 摘要 |
An enclosed chamber carries a high speed rotating abrasive throwing wheel which discharges, by centrifugal force, abrasive particles through radially extending channels against a circumferential array of workpieces requiring machining, and positioned in the path of the high speed abrasive particles. The chamber is subjected to vacuum pressure or a low density atmosphere, with little aerodynamic loss due to windage effects on the high speed rotating wheel, low drag on the abrasive particles as they move freely from the channels to the work piece and no cushioning due to the entrapment of air between the particles and the workpiece.
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