To provide a deeper knowledge on the manufacturing processes based on material removal, with particular regard to: modelling and analysis of chip formation, machine tools and their operations, NC and programming, economical optimisation of machining. Non-traditional machining processes, additive manufacturing and reverse engineering are also studied.
The course is based on lectures, numerical exercises and laboratory of machine tools.
Principles of metal cutting: kinematics and dynamics of machining; tool life; cutting fluids; machinability. Machine tools classification. Turning: geometry and representations of the single-point tool; modelling of surface microgeometry; turning operations; types of lathes; forces and power; elastic deflections. Milling: geometries of milling cutters; up-cut and down-cut; cycloid trajectories, chip thickness; milling operations; gear cutting, milling machines, maximal and mean power. Drilling: tools; geometry of twist drills; drilling machines; forces, torque and power. Reaming: tools, machines. Machining by straight movement: motion analysis, machine tools and operations. Grinding: designation of grinding wheels; abrasive and bond materials; geometry of microchip formation; force and power; grinding machines and operations; centerless grinding. Gear cutting: spur and helical gears; parameters and metrological controls; envelope processes; hobbing process and machine; geometrical errors. Numerical control of machine tools: NC machines; types of control, interpolations, programming; ISO codices. Economical estimates of machining: time and cost for a batch; optimisation algorithms. Main non-traditional machining processes: AJM, USM, EDM, ECM, LBM. Additive manufacturing technologies. Reverse engineering: procedures, scanning 3D, CAD model.
P.M. Lonardo, Lezioni di Tecnologia Meccanica, 2009;
M. Santochi, F. Giusti, Tecnologia meccanica, Casa Editrice Ambrosiana, 2004
B.W. Niebel, A.B. Draper, R.A. Wysk, Modern Manufacturing Process Engineering, McGraw-Hill, 1986;
G. Chryssolouris, Laser Machining, Springer-Verlag, 1991.
ENRICO LERTORA (President)
CHIARA MANDOLFINO
ALESSANDRO BRUZZONE (President Substitute)
MARCO PIZZORNI (President Substitute)
https://corsi.unige.it/9269/p/studenti-orario
PRODUCTION ENGINEERING
For the admission to exam, which is oral, the uploading to a website (for automatic correction) of three exercises on lab activities is required.
Pre-requisites :
Basic knowledge on physics and manufacturing processes.
