COSTRUZIONE DI MACCHINE
Academic Year 2019/2020 - 1° Year - Curriculum Advanced Mechanical design, Curriculum Energy and Enviroment and Curriculum Mechatronics and ManifacturingCredit Value: 9
Scientific field: ING-IND/14 - Mechanical design and machine construction
Taught classes: 42 hours
Exercise: 45 hours
Term / Semester: 2°
Learning Objectives
Based on the concepts acquired in Structural Mechanics and Applied Mechanics, we will provide the basis for the design of components and simple mechanical systems.
Course Structure
Frontal lessons and exercises on the topics of the course. The course will deals with study and design of mechanical components either on static or dynamic conditions.
Detailed Course Content
Technical project. Singular functions. Materials Testing.
Beams, diagrams of T and M.
Equivalent stresses.
Material fatigue.
Integrated design. Ecodesign.
Selection of materials.
Cumulative damage. Thermographic method.
Notch effects.
Damping.
Springs.
Leaf springs of rod holders. Springs with progressive stiffness.
Coil springs. Torsion springs.
Conical torsion springs.
Ring-shaped springs.
Tubes.
Forced shaft-hub connections. Forced connections plate-fly.
Tabs. Sticks.
Lubrication: general equations.
Thrust bearing. Plain bearing.
Theory of Hertz. Stribeck formula.
Rotational bearings.
Flanged joints. Flexible couplings. Bibby joint. Voith-Maurer joint.
Universal joint. Oldham coupling.
Gears. Thickness of the tooth. Schiebel fitting.
Minimum number of teeth. specific sliding.
Gears design. dynamic correction of the allowable voltage. Bending calculation. Wear calculation. Correct gears.
Grafts.
Exercises on the design and verification of the mechanical parts.
Textbook Information
1. R. Giovannozzi. Costruzione di Macchine. Patron Editore.
2. A. Risitano. Appunti del corso.
3. Shigley: Progetto e costruzione di macchine. McGraw-Hill, 2009.
4. Funaioli:Meccanica applicata alle macchine. Patron. Vol. I.