Effect analysis of bearing and interface dynamics on tool point FRF for chatter stability in machine tools by using a new analytical model for spindle–tool assemblies

Evaluation of dynamic stiffness of machine tool spindle by non-contact excitation tests

“…The basic components of a spindle, such as its rotating shaft, support bearings, and contact parts, have elasticity, and their contribution to stiffness at the tool point is complex. State-of-art design methods consider the nonlinearity of preloaded bearings [2], interface dynamics [3], and the thermal distribution of the components [4,5]. Measurement methods are important in the evaluation of the designed stiffness and its achievement in the manufacturing process.…”

Ultrasonic measurement of contact stiffness and pressure distribution on spindle–holder taper interfaces

“…The spindle-holder interface can account for 25% to 50% of the total deformation at the tool tip [2]. Furthermore, the contact stiffness of the taper interface has a significant effect on the dynamic behavior and chatter stability of the spindle systems [3]. On the other hand, the stress distribution on the taper interface also seriously affects the life of the holder and other contact characteristics of the taper interface [1].…”

“…However, acquiring accurate modal data or FRFs requires tremendous efforts [15]. Furthermore, any errors in the modeling or measurement of the spindle-holder assembly will be compensated by the extracted inaccurate or incorrect interface parameters [3,16,17].…”

Dynamic Analysis of a Rotary Hollow Shaft With Hot-Fit Part Using Contact Elements With Friction

“…The model was further modified based on the approaches suggested by Shih and Tsuei [8]. In the studies by Ozsahin, Erturk and Ozguven [9][10][11], analyses on a spindle-holder-tool assembly were conducted. The Timoshenko beam theory was employed to calculate the tool point FRF of the assembly with the use of the receptance coupling and structural modification methods.…”