FIELD: metals processing.
SUBSTANCE: invention relates to the processing of metals by pressure and can be used in mechanical engineering in the manufacture of shell parts from sheet blanks by deep drawing. By means of matrices, a plastic medium is deformed in the form of a washer together with two workpieces. The plastic medium is placed inside the container. The upper blank is placed on the upper base of the washer. The lower workpiece is placed on the lower die. Workpieces are lubricated differentially. The surfaces of the blanks facing the dies are completely lubricated. The central surfaces of the workpieces, corresponding to the points of the dies and facing the plastic washer, are degreased. The peripheral surfaces of the blanks facing the plastic washer are lubricated. After forming the blanks, the original shape of the plastic washer is restored.
EFFECT: invention makes it possible to simultaneously stamp two workpieces from a ductile aluminum alloy without pinching their flange part.
1 cl, 5 dwg, 1 ex
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