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The effect of linear guide representation for topology optimization of a five-axis milling machine

Yüksel, Esra and Budak, Erhan and Ertürk, Ahmet S. (2017) The effect of linear guide representation for topology optimization of a five-axis milling machine. In: 16th CIRP Conference on Modelling of Machining Operations (16th CIRP CMMO), Cluny, France

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Official URL: http://dx.doi.org/10.1016/j.procir.2017.03.257

Abstract

Topology optimization is a countermeasure to obtain lightweight and stiff structures for machine tools. Topology optimizations are applied at component level due to computational limitations, therefore linear guides’ rolling elements are underestimated in most of the cases. Stiffness of the entire assembly depends on the least stiff components which are identified as linear guides in the current literature. In this study, effects of linear guide’s representation in virtual environment are investigated at assembly level by focusing on topology optimization. Two different contact models are employed for rolling elements in the linear guides. Reliability of the contact models are verified with experiments. After the verification, heavy duty cutting conditions are considered for the system and topology optimization is performed for two different contact models to reduce the mass of the structure. The difference caused by the representation of rolling elements is demonstrated for the same topology algorithm and the optimization results are compared for the models. Lastly, the effect of using more stiff linear guides in the five-axis milling machine is investigated by increasing the stiffness of the contact elements.

Item Type:Papers in Conference Proceedings
Uncontrolled Keywords:FEM; Topology Optimization; Stiffness; Linear Guides
Subjects:T Technology > TJ Mechanical engineering and machinery
ID Code:32627
Deposited By:Erhan Budak
Deposited On:15 Sep 2017 12:13
Last Modified:15 Sep 2017 12:13

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