Three Roller Curvature Scotch Straightening Mechanism Study and System Design

During the process of straightening, hot rolled deformed bars rotate around autologous axis, which cause out of the vertical of straightening surface and the straightening precision is deduced. To solve the problem of the bars's rotation , parallel roller collocation scheme of hot rolled deformed bars with high speed and no scratches is presented. Based on the theory of elastoplasticity large deformation, elastic recovery torque variety during the setting out of coiled bars is analyzed in accordance with the triple-roller equal curvature rotation blocking straightening system. The mechanical model of bars in triple-roller is established and rotation blocking mechanism of the triple-roller equal curvature rotation blocking straightening system is researched. The results indicate that the system has the effect of consistent original curvature and rotation blocking toguarantee straightening precision and supply the demand of operation.