Measurement of Spindle Stiffness
for the Development of Intelligent Spindle

 
Atsushi Matsubara, Sarhan Ahmed, Motoyuki Sugihara, Soichi Ibaraki
 
 
 
Abstract
 
In this research, we measure the spindle stiffness by using a loading device for the development of an intelligent spindle. The spindle displacement and hold displacement are calculated from several displacement signals and tool load is measured with a tool dynamometer. The relationship between displacement and load is shown as stiffness chart. The nonlinearity characteristics of the spindle-holder system is observed in the measurement results.