Optimal design of mechanism parameters of rolling-cut type cut-to-length shears

Rolling-cut shear is the key equipment of medium plate producing 1ine, while pure rolling shear was set as the target, so that the rolling line is smooth, and the quality of products is improved. This paper describes an investigation into the work Mechanism of rolling-cut shear. A parametric model of rolling-cut shear has been constructed by using ADAMS software. This model was used for two working rolling-cut shear to verify factors influencing quality of products. The influences of the amount of scissors overlapping and shear force are also discussed. The indications are that the length of crank and guard bar, preliminary angle of the crank, the articulated point location of guard bar and frame are key factors to the amount of scissors overlapping and equivalent shear angle. These structure parameters are selected as design variables and the optimization model which was used to reduce scissors overlapping and shear force has been suggested. This optimization model has been employed successfully in the developing of rolling-cut shear 3800 to obtain reasonable mechanism dimensions and improve shearing quality and reduce motor power. The study results provide new idea for developing and optimum design of rolling-cut shear.