METHOD FOR MANUFACTURING HARROW DISCS Russian patent published in 2022 - IPC B21H7/00 B21K19/00 B21D53/60 A01B23/00 

FIELD: harrow discs production.

SUBSTANCE: invention relates to a method for manufacturing harrow discs. The strip is laid on the matrix above the spherical surface of the molding punch rigidly fixed in the cavity of the matrix. By means of a clamp, a wedge annular rib of the contact surface of the clamp is pressed into the strip, aligning the inner surface of the rib with the generatrices of the cylindrical cavity of the clamp and the annular surface of separation of the workpiece from the strip. The strip is pressed against the matrix and a disk sphere is formed. At the same time, the values ​​of tensile stresses in the annular surface of the separation of the workpiece from the strip are in the range of values ​​of the yield strength and strength of the workpiece metal. The inter-leaf recesses of the disc are punched out along their inner contour and the edges of the recesses are cut along the annular surface of the separation of the workpiece from the strip. The edges of the blades of the disc are cut along the annular surface of the separation of the workpiece from the strip with the separation of the resulting disc from the strip.

EFFECT:energy consumption is reduced and the efficiency of manufacturing harrow discs is increased.

1 cl, 5 dwg, 1 ex