FIELD: metallurgy industry.
SUBSTANCE: in order to form the plate round edge of variable thickness, the plate is located between working surfaces of strikers. The above surfaces are provided with at least one groove of variable section. Generatrix of the groove complies as to the shape with the plate round edge profile and has variable radius. Strikers are supplied with ultrasonic vibrations and at the same time the plate is moved in transverse direction. Width of original plate is less than the specified width of processed plate by the value which is determined from the given formula. When the plate is moved in transverse direction, strikers are turned about their longitudinal axis.
EFFECT: improving quality of manufactured products, increasing serviceability of strikers and decreasing deformation force.
6 cl, 15 dwg, 3 ex
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