Modelling of Lathe Structure for the Computation of Dynamic Characteristics

Abstract

<p>As part of a general programme of machine tool research, this work initiates development of mathematical models of machine tool structures.</p> <p>The lumped-parameter method is employed in modelling a lathe spindle assembly, importance being attached to the effect of components in contact with the spindle proper. For the complete lathe structure, the finite element approach is used and computations are carried out on a commercially-available computer programme.</p> <p>In both cases the dynamic behaviour of the model is determined and compared with the behaviour of the actual structures obtained directly by measurement. The measurements belong to related studies in the general programme.</p> <p>The work also includes an introductory study of the static and modal characteristics of a model milling machine adopted by several universities in an international co-operative programme in machine tool research.</p>