Structural Parameters' Optimization Of Short Stress Path Rolling Mill

With the continuous increasing requirement of the milling precision and the continuous development of the rolling technique, short stress path high rigidity rolling mill become very popular in recent years. It is a very important question in the structural designing of short stress path high rigidity rolling mill that whether the bearing chock of the rolling mill can self-align freely and whether the self-aligning pad can come into partial loading status or even into damage because of the bearing chock's deformation. So it has very important theoretical and practical significance to study the vital structure parameters of the rolling mill. In the essay,the deformation of RR445HS short stress path high rigidity rolling mill's roller and bearing chock is calculated, also the contact stress,deformation and the failure condition of the load-bearing pad's surface is analyzed deeply on theory. According to the practical rolling standard and based on the finite element theory, use the finite element analysis software-ANSYS to calculate the mill roll and the bearing chock's deformation under this biggest draught pressure .On the result of the deformation we can get the deflection angle of the upright column's axis to the vertical direction. This angle is the dimension to check out whether the preformed gap between the bearing chock's upright column wall of hole and the upright column. To calculate the contact stress between the self-aligning pad and the load-bearing cowl under the given biggest draught pressure. Then to compare the contact stress and the allowable biggest stress. The vital structure parameters is got by the spot measure of the RR445HS short stress path high rigidity rolling mill. Combine with the rolling mill's service condition we proved the precision of the theoretical analysis. Based on this, we optimized the rolling mill's structure and gave the rational structural parameters.