Abstract

The theory and calculation of the parameters of the strain-stress state at the stages of pre-bending, calibration, straightening, bending of a straightened section and bending of the next section, taking into account the hardening of the workpiece on a roller machine, is developed. Deformations, stresses and forces acting on the workpiece from the rolls were investigated by CAD/CAE-modeling. Criteria for the formation of cracks, low accuracy and excessive springback of the workpiece after these stages of processing are determined. Recommendations for eliminating these defects are given. Keywords: sheet stamping, billet, bending, roller machine, pre-bending, calibration, straightening, CAD/CAEmodeling. dr_zharkov_v_a@mail.ru

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