FIELD: metal forming.
SUBSTANCE: invention relates to sheet metal forming and can be used in incremental deformation of a sheet with a heated tool with a hemispherical tip mounted on a robot arm. Tool is moved along the programmed trajectory. Sheet material is calibrated to obtain values of flow stress and corresponding deformation and strain-strain curve. Behaviour of sheet material in plastic region is determined, in which deformation is constant after removal of applied stress. After calibration, the contact zone of the sheet clamped along the edges and the tool is determined, in which the tool is placed at the first coordinate point of the programmed trajectory of the tool along the spiral forming the surface of the truncated pyramid, and at other points. Said points are determined from three amplitudes. Then the heated tool moves along the programmed trajectory.
EFFECT: optimized control of working tool.
1 cl, 4 dwg
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