FIELD: machine building.
SUBSTANCE: blank is installed in the matrix with part projection for local deformation, blank is fixed in axial direction. The matrix is put in the rotation, and the projecting part is expanded by the rotating roller. The roller is moved in the direction of the blank axis. To the projecting part of the blank during the entire expansion process the radial force is applied by means of the rotating roller. The roller is moved in the radial direction with speed corresponding to increasing of the blank radius. Simultaneously the roller moves in radial direction synchronously with the roller movement.
EFFECT: possibility to increase the deformation degree of the input blanks to receiver the quality parts.
3 dwg, 4 ex
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