Study On Rolling Force Deviation Of PC Mill

This paper will do theory and experimental research on the problems of deviation of rolling force on two sides of the rolling mill Bao gang Steel 1580PC mill.Firstly, this paper do resarch on the self-adaptive mechanism to uniformly distributing axial force of the PC rolling mill structure.Modeling in ADAMS and extract the degree of freedom of uniform load mechanism of work roll and back-up roll. The message show that the degree of freedom is zero and can make dynamics simulation.Simulate uniform load mechanism of work roll and uniform load mechanism of back-up roll with the method of mechanical sysytem dynamic emulation. The results show that the uniform load mechanism can compensate the axial displacement when the bearing frame turn around the roll fixed end and can deliver the axial force to the frame avoiding deviation of rolling force on two sides of the rolling mill because of excessive axial force in roll system when asymmetric cross.Secondly,analysis the impact on deviation of rolling force of the additional torque of the PC transmission system and universal-joint spindle.Finally, using the finite element software DEFORM analysis the impact on the deviation of rolling force under the cross point movement of roll systerm . Simulate the alter of the deviation of rolling force when cross point changes under the same cross angle and when cross angle changes under the same crossing point.This provide basis for the control and debugging of the rolling mill.Design and manufacture PC simulation rolling mill according to the similarity theory.It has controllable crossing angle and adjustable mechanism of crossing point position and it is convenient and swift to adjust the crossing angle and the crossing point position.It can finish many kinds of experiments,for example,crossing state and shape of strip of PC rolling mill,crossing state and rolling force,working roll deviation distance and rollling system steady state. This provide a good experimental platform for rolling theory and working state of PC rolling mill.It finished a series of experiment research on the PC simulation experiment rolling mill including crossing angle and deviation of rolling force,the alter crossing point of rolling system and deviation of rolling force, crossing state and shape of stripand rollling system steady state.The experiment result have important guiding significance on the design theory and maintenance of the PC rolling mill even the four-high rolling mill.