Simulation Analysis and Experiment Research for a Large Span and Heavy Load Crossbeam
Aiming at solving issues of load bearing deformation compensation and sympathetic vibration, this paper takes a large span and heavy load crossbeam of a domestic heavy-type numerical control milling planer for research object, the final purpose is to improve machining precision and stability of the heavy machine tool product. The load curve considering the influence of columns deformation, natural frequency and vibration model are obtained, respectively by the dynamic and static simulation analysis of the crossbeam with the finite element analysis method. Then, the modal analysis results are verified through the model experiment. Lastly, this paper presents an approach by estimating the load curve to improve machining precision, points out the weak links, and provides guidance for crossbeam structure design, optimization and reverse manufacture.
T. N. Guo et al., "Simulation Analysis and Experiment Research for a Large Span and Heavy Load Crossbeam", Advanced Materials Research, Vols. 211-212, pp. 1210-1215, 2011