Patent ID: 8061031
Filing Date: 2011-11-22
Classification: B23P,F01D,F04D,F05D,Y10T

Abstract:
1. A method of finish machining an impeller comprising: providing a main body of the impeller having first and second sections and a plurality of blades extending between the first and second sections, each blade having a leading edge integrally-formed with the first and second sections and a front side integrally-formed with the second section, each blade further having a mounting surface extending from the first section opposite the front side for receiving an access body; providing a cover annular portion that is integrally-formed at a trailing edge of each of the plurality of blades on a rear side of each blade; providing access openings in the impeller, each access opening being defined between adjacent blades; machining at least one of the blades through the access openings; covering the access openings with the access a second body; and attaching an outer circumferential surface of the access body to an inner circumferential surface of the cover annular portion.