Mill Blade Fatigue Strength And Modal Analysis For Key Components

As an aviation blade special equipment, the performance and reliability of blade-roll mill directly determine the quality and stability of blade production. This paper, with aero-engine blades roll mill as a research background, uses the finite element analysis based on modal analysis theory and fatigue theory to conduct a strength analysis for blade mold, roll axis, rack and pinion using ANSYS.Firstly, the paper studies on the relationship of the rolling force and rolling torque required during rolling of the blade, and solves it by numerical method, then uses the solution as the border condition to make a static analysis on the roll axis and rack and pinion using ANSYS; Secondly, uses the bearing mounting surface of the roller as a border condition to conduct fatigue analysis and modal analysis on the leaf mold; Finally, conducts fatigue analysis and modal analysis for the gear using a border condition in which the gear is mounted on the keyway of roller shaft.By the use of finite element analysis software, strength check for the key components of the roller mill (roll shafts, gears, rack and blade mold) was checked. The results show that all the key components of a rolling mill meet the requirements of use. The research results obtained provide a basis for the structural optimization of the rolling mill.