DEVICE FOR MAGNETIC IMPULSE FORMING OF EXTRA THIN SHEET MATERIALS WITH LOW ELECTRICAL CONDUCTIVITY Russian patent published in 2022 - IPC B21D26/14 

FIELD: sheet stamping.

SUBSTANCE: invention relates to the field of sheet stamping, in particular to magnetic-pulse stamping of especially thin sheet metals. A device for magnetic impulse forming of especially thin sheet materials with low electrical conductivity contains a flat spiral inductor, a rigid movable element made of a material with high electrical conductivity, a movable insert spring-loaded by an elastic element, a matrix with a forming contour in the center and a cutting edge on the outer contour, an elastic punch, which are in a container, the surface of the spring-loaded outer insert, on which the workpiece is installed, is located 1...1.5 mm above the surface of the matrix, the edge of the insert on the die side has a radius of curvature equal to 3...5 material thicknesses, and the distance between the cutting edge of the die and the rounded edge of the insert when cutting in the lower position of the insert is 5...8 material thicknesses.

EFFECT: increasing the accuracy of manufactured parts and reducing the percentage of rejects.

1 cl, 3 dwg