FIELD: mechanical engineering.
SUBSTANCE: rectified blade workpiece symmetrical with respect to a longitudinal plane is produced from a plate by transversal cold rolling in two passes. A thickness of the plate corresponds to the maximum thickness of the finished blade. Transverse rolling is carried out, starting from the place of location of a cross section of the finished blade, having the maximum thickness. A length of the rectified workpiece in transverse sections is equal to the length of an arc, passing through the centre of thickness of the corresponding cross section of an untwisted blade. Then, an airfoil profile of the blade is shaped by means of cold stamping of the rectified workpiece and its twisting and calibration are performed.
EFFECT: improvement of quality of the finished products and reduction of the labour intensity of their production.
3 cl, 17 dwg
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