Dynamic Characteristics of Rotating and Nonrotating Machine Tool Spindles

The initial concern of this paper is to establish the general relationships between vibration testing using a static machine tool, and vibration testing using a machine tool under dynamic conditions, obtaining the frequency response by a pulse technique. The application of pulse testing to determine the dynamic characteristics of a rotating machine tool spindle is investigated. The characteristics of a static spindle are contrasted with the characteristics at different rotational speeds of the same spindle while also noting any effect of table feed. The capabilities, advantages, and limitations of the testing method are discussed with respect to mounting conditions and physical aspects of the machine tools examined.