Patent ID: 6760971
Filing Date: 2004-07-13
Classification: B23B,F04D,F05D,Y10T

Abstract:
A method of machining a plurality of circumferentially spaced bores in an object, each of the bores extending generally tangentially and inwardly and being positioned in the object so as to generally asymmetrically intersect two adjacent bores, the method comprising steps of:a) providing the object; b) determining a plurality of bore positions generally around a circumference of the object; c) machining a first bore; d) performing at least one subsequent machining operation on the first bore to substantially complete the first bore; e) machining a second bore immediately adjacent to the completed first bore, wherein the second bore is machined so as to intersect the completed first bore; f) performing at least one subsequent machining operation on the second bore to substantially complete the second bore; g) sequentially machining a remaining plurality of bores except a final bore, wherein each said bore is machined so as to intersect an immediately adjacent completed bore; and h) machining the final bore immediately intermediate the first bore and a second-final bore wherein the final bore is machined so as to intersect the first and second-final bores.