Chattering Analysis of Cold Rolling Mill Based on the Design of an Experiment

Abstract

Cold rolling can be described as a processing method that is often used for materials with a small thickness or cross-section, or for finishing work to obtain products with accurate dimensions and clean surfaces. However, as the speed of this process increases to improve productivity, chatter vibration occurs due to the imbalance and eccentricity of the rolling roll, damaging the gear drive unit and the bearing. Therefore, in this study, to analyze the main cause of chatter vibration in the cold rolling system, chatter vibration phenomena according to various rolling conditions were calculated using a multi-body dynamics model. In addition, the experimental design method was used to statistically analyze the calculated data and the interaction effects that could correlate with the main factors causing chatter vibration were investigated. Finally, a simple regression equation model is presented.