Title: A mechanism for linking user's operational requirements with reliability and maintenance schedule for machine tool

Authors: Bhupesh Kumar Lad, Makarand S. Kulkarni

Addresses: Department of Mechanical Engineering, Indian Institute of Technology Delhi (IIT Delhi), Hauz Khas, New Delhi 110016, India. ' Department of Mechanical Engineering, Indian Institute of Technology Delhi (IIT Delhi), Hauz Khas, New Delhi 110016, India

Abstract: Historically, designers have done a good job of evaluating the functions and forms of products in the design phase. However, it is only in the past few years that there appears to be an increased focus on evaluating end user|s reliability and maintenance requirements at the design phase. Especially in case of machine tools, where the machines are used by different users with different operational requirements, optimal reliability and the corresponding maintenance policies may vary from one user to another user. It is therefore essential for the designer to have mechanisms that link the machine reliability and maintenance parameters with the user|s operational requirements. In this paper, we have identified the users| operational requirements through discussion with the managers of machine tool manufacturers and user industries. Inputs from literature survey have also been taken into consideration. A mechanism to link operational requirements with machine tool reliability and maintenance parameters is proposed. Use of such a mechanism in decision making is also demonstrated with the help of examples.

Keywords: optimal reliability; maintenance policy; operational measures; OEE; overall equipment effectiveness; LCC; life cycle cost; CPP; cost per piece; machine tools; operational requirements; machine tool maintenance; machine tool reliability.

DOI: 10.1504/IJRS.2010.035573

International Journal of Reliability and Safety, 2010 Vol.4 No.4, pp.343 - 358

Available online: 30 Sep 2010 *

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