METHOD FOR CORRECTING SHAPING CONTOUR OF VARIABLE-CURVATURE STRETCHING PUNCH

摘要

FIELD: plastic metal working. SUBSTANCE: method for correcting shaping contour of variable-curvature stretching punch comprises steps of changing geometry of punch contour given in the form of part of parabolic function on data carrier to side of minus allowance for curvature radius values. Current radius value of punch contour in each point is formed by displacing both ends of bent portion along parabola line to side of minimum curvature radius. EFFECT: enhanced accuracy of method.