Centerless grinding systems stability

In this paper the steady state dynamics of a centerless grinding machine an d work piece has been examined. A model of a centerless grinding system whi ch allows both the deflection of the work piece center and the deformation of the grinding machine frame has been developed. Two instabilities are dem arcated work piece surface generation instability, and grinding process instability. Both the generation and the grinding stability of self-excited vibrations a re investigated. Stability limits are defined using the characteristic equa tions of the system. The main factors that influence the limit of stability of the machine, and the transversal profile of the work piece have been sh own to be the relative position of the grinding wheel, regulating wheel and support b lade of the work piece, the width of the grinning wheel; the harmonic response of the grinding machine frame.