Reliability analysis of machine tool structures

Singiresu S Rao, C. P. Reddy

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A method of estimating the reliability of machine tool structures is developed. The reliability analysis of horizontal milling machines in various failure modes, like static deflection, fundamental natural frequency and chatter stability, is considered for illustration. The table height, distance of the cutter center from the arbor support, damping factor, Young's modulus of the material and the load acting on the cutter and the table are considered as random variables. The finite-element displacement method is used to idealize the structure. The reliability analysis is based on the linearization of a function of several random variables about the mean values of the random variables. The/overall reliability of the machine tool structure is found by treating it as a weakest-link system having several failure modes. A sensitivity analysis is also conducted to find the vdriaion of reliability with a change in the coefficients of variation of different random parameters.

Original languageEnglish (US)
Pages (from-to)882-888
Number of pages7
JournalJournal of Manufacturing Science and Engineering, Transactions of the ASME
Volume99
Issue number4
DOIs
StatePublished - 1977
Externally publishedYes

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Reliability analysis
Random variables
Machine tools
Failure modes
Milling machines
Linearization
Sensitivity analysis
Loads (forces)
Natural frequencies
Damping
Elastic moduli

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering

Cite this

Reliability analysis of machine tool structures. / Rao, Singiresu S; Reddy, C. P.

In: Journal of Manufacturing Science and Engineering, Transactions of the ASME, Vol. 99, No. 4, 1977, p. 882-888.

Research output: Contribution to journalArticle

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