Static and dynamic analysis of headstock spindle of the lathe

This paper presents a method of analysis for the prediction of static and dynamic behavior of lathe spindle. The VIBXPERT software kit is used to determine the dynamic characteristics of the spindle and FEM method is used to determine the static parameters of the headstock spindle of the lathe. Analysis of the vibration severity for different spindle speed, feed rate and depth of cut. Static analysis is carried out by determining the forces acting on spindle and deflection and stiffness of the spindle. In this vibration characterization of headstock spindle of the lathe determines the natural frequency, amplitude of vibration, level of vibration, condition of resonance and geometrical stiffness, experimentally. The results show that the maximum rotating speed of spindle is far smaller than the natural resonance region speed and good stiffness, less deflection of the spindle. From the values of vibration at spindle determined from experimental analysis, it is found that the vibration velocity increases with increase in cutting speed, depth of cut and feed rate.