Dynamics of Machining Processes

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Description:

Pre-Requisite

ME 312

Syllabus:

Mechanics of machining processes: Physics of orthogonal cutting and oblique cutting; Analytical, mechanistic modelling for cutting forces in turning, milling (straight and helical cutters), and drilling processes; Analytical and experimental methods for Identification of cutting force coefficients. Machining dynamics and chatter vibrations: Mathematical modeling of single and multiple degrees of free and forced vibrations; Frequency response functions; Analytical and experimental modal analysis of machines tool structures; Oriented frequency response function of machine tool structures; Identification of modal parameters; Introduction to chatter or self-excited vibrations; Types of chatter; Regenerative chatter mechanism; Mathematical models for regenerative chatter in orthogonal cutting operation. Stability Analysis: Stability analysis of single and multiple degrees of freedom models of orthogonal cutting operation; Stability modelling of turning process and milling operations using frequency and time domain approach; Introduction of stability model for drilling process. Chatter detection and suppression techniques: Prediction methods and experimental techniques for chatter avoidance; Passive and active suppression techniques.

Texts/References:

[1] Yusuf Altintas, Manufacturing Automation: metal cutting mechanics, machine tool vibrations, and CNC design, 2nd Ed., Cambridge University Press, 2012

[2] Tony L. Schmitz and Kevin, S. Smith, Machining Dynamics: frequency response to improved productivity, 1st Ed., Springer Science & Business Media, 2009

[3] Kai Cheng, Machining dynamics: fundamentals, applications and practices, Springer Science & Business Media, 2008

[4] George Tlusty, Manufacturing Process and Equipment,1st Ed., Pearson Education, 1999

[5] Koenigsberger, Franz, and Jiri Tlusty. Machine tool structures, 1st Ed., Elsevier, 2016

[6] Weihong Zhang and Min Wan, Milling simulation: metal milling mechanics, dynamics and clamping principles, Wiley-ISTE, 2016