| 摘要 |
PURPOSE:To automate the polishing finish work of a large impeller by covering a portion of the impeller with a cover while encapsulating a polishing medium then moving said medium relatively against the polishing face. CONSTITUTION:The outer-circumference and the central opening of an impeller 8 is covered with the covers 11, 12 through a seal member 10 then a polishing member 13 is encapsulated. When rotating the impeller 8, the polishing member 13 will move relatively against the polishing face becuase of the differential gravity of the polishing member 13 due to the rotation of the impeller 8 thus to produce the polishing force for the polishing face. When rotating the impeller 8 continuously, the polishing face is finished automatically to produce the desired surface finish. The entire impeller may be covered with the cover. |
