Mathematical Modeling of Mechatronics System "Hydraulic Screwdown Mechanism - Electric Drive of Rolling Mill Stand"

Abstract

The article provides a rationale for the mathematical model of a mechatronics system "hydraulic screwdown mechanism - electric drive of a rolling mill stand". The authors emphasized the relevance of the research of the developed method to limit dynamic loads imposed on electromechanical system rolls in compliance with which a roll gap is increased before metal bite and roll movement to a set position during rolling. The paper presents a block diagram for a complex mathematical model including local models of a hydraulic screwdown mechanism in the automatic gage control system (AGCS) and a rolling mill stand structure interconnected by metal. Further, the setup of a system for the adjustment of the screwdown mechanism position is considered. The authors provide analytical dependences to calculate the specific roll force and mill torque. The developed method was modeled, and it was proved that its implementation results in the decrease of the dynamic torque at metal bite. The article is concluded with the recommendations on the developed model use.