A modeling approach for analysis and improvement of spindle-holder-tool assembly dynamics

Budak, E.
Erturk, A.
Özgüven, Hasan Nevzat
The most important information required for chatter stability analysis is the dynamics of the involved structures, i.e. the frequency response functions (FRFs) which are usually determined experimentally. In this study, the tool point FRF of a spindle-holder-tool assembly is analytically determined by using the receptance coupling and structural modification techniques. Timoshenko's beam model is used for increased accuracy. The spindle is also modeled analytically with elastic supports representing the bearings. The mathematical model is used to determine the effects of different parameters on the tool point FRF and to identify contact dynamics from experimental measurements. The applications of the model are demonstrated and the predictions are verified experimentally.


A closed-form approach for identification of dynamical contact parameters in spindle-holder-tool assemblies
Özşahin, Orkun; Özgüven, Hasan Nevzat (Elsevier BV, 2009-01-01)
Accurate identification of contact dynamics is very crucial in predicting the dynamic behavior and chatter stability of spindle-tool assemblies in machining centers. it is well known that the stability lobe diagrams used for predicting regenerative chatter vibrations can be obtained from the tool point frequency response function (FRF) of the system. As previously shown by the authors, contact dynamics at the spindle-holder and holder-tool interfaces as well as the dynamics of bearings affect the tool point...
ESKICIOGLU, AM; ESKICIOGLU, H (SAGE Publications, 1992-01-01)
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Bil, H; Kilic, SE; Tekkaya, AE (Elsevier BV, 2004-07-01)
The aim of this study is to compare various simulation models of orthogonal cutting process with each other as well as with the results of various experiments. Commercial implicit finite element codes MSC.Marc, Deform2D and the explicit code Thirdwave AdvantEdge have been used. In simulations, a rigid tool is advanced incrementally into the deformable workpiece which is remeshed whenever needed. In simulations with MSC.Marc and Thirdwave AdvantEdge, there is no separation criterion defined since chip format...
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
Ertuerk, A.; Özgüven, Hasan Nevzat; Budak, E. (Elsevier BV, 2007-01-01)
Self-excited vibration of the tool, regenerative chatter, can be predicted and eliminated if the stability lobe diagram of the spindle-holder-tool assembly is known. Regardless of the approach being used, analytically or numerically, forming the stability lobe diagram of an assembly implies knowing the point frequency response function (FRF) in receptance form at the tool tip. In this paper, it is aimed to study the effects of spindle-holder and holder-tool interface dynamics, as well as the effects of indi...
A new modal superposition method for nonlinear vibration analysis of structures using hybrid mode shapes
Ferhatoglu, Erhan; Ciğeroğlu, Ender; Özgüven, Hasan Nevzat (Elsevier BV, 2018-07-01)
In this paper, a new modal superposition method based on a hybrid mode shape concept is developed for the determination of steady state vibration response of nonlinear structures. The method is developed specifically for systems having nonlinearities where the stiffness of the system may take different limiting values. Stiffness variation of these nonlinear systems enables one to define different linear systems corresponding to each value of the limiting equivalent stiffness. Moreover, the response of the n...
Citation Formats
E. Budak, A. Erturk, and H. N. Özgüven, “A modeling approach for analysis and improvement of spindle-holder-tool assembly dynamics,” CIRP ANNALS-MANUFACTURING TECHNOLOGY, pp. 369–372, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48765.