DEVICE FOR MACHINING WORKPIECES Russian patent published in 1994 - IPC

FIELD: mechanical working. SUBSTANCE: device for mechanical working workpieces, mainly turbine blades with cylindrical surfaces, has stepped holder in the form of mandrel with flanges having holes to receive fixing members connecting it with intermediate flange. Intermediate flange of the device has radially extending recess, whereas one of fixing members is rigidly secured in the center of the intermediate flange for engagement with central hole of the holder. In addition, the holder has peripheral holes equidistantly spaced from the axis to a distance indicated in the description. Working surface of the mandrel has the form of alternating cylindrical surfaces with curvature radii R_с and R_к. EFFECT: enhanced efficiency of machining. 2 cl, 6 dwg