Development of a framework for operational phase life assessment of machine tools using a structural approach
by Kumar Sarthak; Girish Kumar; Ajith Tom James; Umang Soni; Mohammad Asjad
International Journal of Product Lifecycle Management (IJPLM), Vol. 13, No. 4, 2021

Abstract: The life assessment of machine tools during operational phase is essential for ensuring the design robustness as well as scheduling of maintenance activities. To accomplish this, the factors influencing it are singled out. The operational life factors, including their interrelations are modelled, taking into consideration of their structure using graph theory. A matrix equivalent of the digraph provides machine tool operational life function (MTOLF) that characterises machine tool life, leading to the development of operational life index (OLI). An illustration of operational life assessment of two computer numerical controlled (CNC) turning centres of same capacity, but of different makes is provided using proposed methodology as an experimental application. The methodology proposed is conducive to assess and correlate design alternatives of machine tools that work in the same operating conditions and have similar specifications. This can also help the users of machine tools to improve the operating conditions to enhance the machine tool life.

Online publication date: Wed, 08-Dec-2021

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