Static Analysis of VMC Spindle for Maximum Cutting Force

Spindle of VMC450 machine is an important component of a vertical machining center. The spindle shaft rotates at different speeds and holds a carbide tool cutter, which machines a work piece attached to the machine tool table. The stiffness of spindle directly affects the VMC machining productivity and finish excellence of work pieces. Spindle shaft is the weakest point in machine tool structure, increasing its stiffness will increase machine tools accuracy and machining product quality. High productivity needs machine tools with high speed machining proficiency, which leads into unavoidable dynamic effects that occur in the machine tools spindle during production process such as regenerative chatter. The objective of this dissertation is to optimize the parameters inducing the stiffness of the high Speed VMC spindle. In this dissertation work, the significant parameters of the spindle bearing spam, diameter, over hanging length, torque are considered while modeling the spindle. The Modeling as well as the analysis of the spindle is done by using ANSYS ® software.