DEVICE FOR TWO-SIDED MACHINING OF CURVILINEAR BLADE SURFACES OF GAS-TURBINE ENGINES Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: spindles 12 and 13 are mounted on faceplate 6 in tailstock sleeve 7 and their cantilever arms carry fastening units of blade 14 and master form 15. Guides 19,21 have tool heads 29,30 whose spindles may carry abrasive wheel 31 or end-piece 32 with strip hold-down roller 33. End-pieces 32 and 38 for machining the internal contour of the workpiece are also cantilever- shaped. The cantilever arms of these end-pieces carry working 33 and follow-up contact rollers, respectively. This arrangement of the rollers provides for machining workpieces having small curvature radii because roller diameters can be reduced while retaining the follow-up arms. EFFECT: wider functional capabilities of the device and possibility of machining surfaces with a small curvature radius. 3 dwg