FIELD: metal forming.
SUBSTANCE: invention relates to metal forming and can be used in production of thin-walled articles of complex shape. Sheet blank is placed in matrix. In the lower part of the matrix there is a pusher with a piercing insert extended to a height depending on the dimensions of the finished product. Sheet blank is formed in one working stroke of the punch. At that, its peripheral part is compressed between working surfaces of punch and matrix and outflow of its material in direction of product bottom. Simultaneously, the piercing insert is introduced into the workpiece material until the cavity formed by the working surfaces of the matrix, the punch, the pusher and the piercing insert is filled.
EFFECT: obtaining an article with improved structural characteristics of the material.
1 cl, 4 dwg
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