Application of Modal Analysis to Machine Tool Structures

Harmonic Analysis and Dynamical Response Optimization in Ceramic Tile Finishing

“…For instance, in Mahdavinejad (2005) the workpiece instability in metal tuning was investigated; in Mahnama et al (2010 and) the effect of chip formation was taken into account inside the simulation models. Furthermore, FEs can also be utilized for the optimization of production plants, as in Myers et al (2003) where the structural dynamics of a whole vertical milling machine was improved, or some specific parts as in Assefa (2013) and Okubo and Yoshida (1982), where a modal analysis was focused on the machine tool column. FE methods also permit to analyze complex and uncommon situations as in Kehl and Blank (2015) where the effect on machine vibrations of specific solutions in the drive controls was estimated; or in Cakair and Yahya (2005) where hard turning operations were studied with special attention to the cutting tools prior to the emerging of fracture conditions.…”

Modal analysis and stiffness optimization: The case of ceramic tile finishing

“…The desire for a better surface finish of a work piece results in a more accurate operation, leading to the need for a much more precise, stable and vibration-less machine. To solve these problems, the vibration of a machine tool should be measured and analysed with the aim to identify the source of vibration and to make it possible to modify or redesign the structure towards a vibration-less and chatter-less performance (Okubo 1982). As demonstrated in this paper, the modal analysis represents a highly powerful mean to support the structure design of machining tools regarding dynamic rigidity.…”

In-process modal parameter identification for spindle health monitoring

“…Spindles are essential elements in virtually all machine tools and their structural dynamic behavior directly affects the performance of machine tools. Identification of spindle modal parameters has been extensively investigated [1][2][3][4][5][6], and various analytical and experimental methods have been explored. For example, lumped mathematical models were applied to derive guidelines for improving the dynamics of machine tools [2].…”

“…Identification of spindle modal parameters has been extensively investigated [1][2][3][4][5][6], and various analytical and experimental methods have been explored. For example, lumped mathematical models were applied to derive guidelines for improving the dynamics of machine tools [2]. Receptance coupling substructure analysis was used to predict the structural response of a spindle-holder assembly [3].…”