METHOD OF ORIENTATION OF GAS TURBINE BLADE OR THE LIKE TYPE WORK PIECE STAMPED BLANKS Russian patent published in 1994 - IPC

FIELD: motor-building. SUBSTANCE: preliminary they determine control points on the blade stamped blank "feather" in places of crossings of three cross sections (1, 2, 3) and three longitudinal sections (4, 5, 6) with surfaces of blade stamped blank "feather" spine 7 and belly 8. Measured standard blade is supported at base points A, B, C. The control points are used for adjusting measuring channels, that form information about position of corresponding control points and determining given position of the standard blade. Then a blade stamped blank is supported at the base points A, B, C and deviation of its position from given one is measured. Determination of deviation of blade stamped blank position from given one is exercised in each pair of control points along middle surface, that is equally spaced from surfaces of spine 7 and belly 8 of its "feather". Then values of blade stamped blank transporting to base points A, B, C is vectorially determined by corresponding formulae and make its orientation by corresponding blade stamped blank movements in the base points. Deviation of blade stamped blank position from given one is determined by deviation of its middle surface from analogous surface of the standard blade. Direction and value of blade stamped blank movement by simplified calculation formulae. EFFECT: it decreases labour-intensiveness of stamped blanks orientation, facilitates distribution of working allowances by simplification of its movement values calculations. 2 cl, 6 dwg