Author(s)

P. Bach

Abstract

Machine tool performance can be strongly limited by the dynamic properties of a machme structure. There is a well-known problem of chatter occurrence. An analysis of a particular case is not always easy because of the modal complexity of such a structure. This paper reports on the analysis carried out at a few milling centers loolung at tools and spindles and their influence on stability levels during cutting. Different kinds of work-piece material are considered as well as low and high cutting speeds. The synthesis of machine structure properties and tool stability properties can be used either to improve a spindle unit design or to choose and fit tools to an existing spindle, both with regard to improving their use. The approach is shown in the examples discussed below. 1 Introduction A significant chatter can be detected durin

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