COMPUTER AIDED DESIGN

ING-IND/15 - 9 CFU - 2° Semester

Teaching Staff

MICHELE CALI'
Email: michele.cali@unict.it
Office: Edificio Polifunzionale (Edificio 3 - piano 6° - stanza n° 39) Città Universitaria − Via Santa Sofia, 64 − 95123 Catania
Phone: +39.095.738.2400
Office Hours: Martedì dalle ore 16:00 alle ore 18:00; Giovedì dalle ore 16:00 alle ore 18:00


Learning Objectives

The course aims to provide the student with the concepts of graphic communication and industrial technical design, so that the same is able to represent, even through the freehand sketch and to interpret, through the reading of drawings, individual components and assembled of machines, identifying their technological and functional shapes and characteristics. The design should never be an end in itself, but must provide a clear and unambiguous representation of the designer's idea, allowing the realization and subsequent testing. The student must also acquire a first knowledge of the standardized functional components of the machines and the design procedures. The study of the insertion of technical documentation into the product life cycle is a characteristic element of the course. Finally, the basic elements of Computer Graphics and solid modeling will be illustrated, as they are the modern and current alternative to the classical tools of manual design. The objectives set by the course through the planned didactic activities are included in the training project of the CdS and will allow the student to acquire a design methodology necessary for the industrial engineer.


Course Structure

The course includes lectures, during which the direct participation of the student is frequently requested. Practical exercises are planned in order to allow the student to acquire the necessary skills for the training of the industrial designer. Every year a guided tour is planned to illustrate to the students mechanical components that are studied during the course. All in perfect coherence with the training objectives of the course.



Detailed Course Content

1. DESIGN FOR THE DESIGN - STANDARDS AND INSTRUMENTS FOR DESIGN The technical design and its evolution. The design behind the industrial design. Conventional representation standards, dimensional scales. Standardization and unification. Industrial Unification. national and internazionali.Strumenti unified regulations for the design 2. PROJECTIONS AND SPELLING isometric projection of a point in space, the Monge theorem. Orthogonal projections. European screening method, American and arrows. Outline of subsidiary plans. Unified axonometries: orthogonal and oblique. Isometric, dimetric and cavalier. Theorem Polhke. 3. SECTIONS AND INTERSECTIONS Sections and representation standards. Sections in planes parallel to and competing plans. Outline of interpenetration between solidielementari 4. Dimensioning The dimensioning. Main types, special quoting conventions, classification of shares. 5. TOLERANCES DIMENSIONAL AND GEOMETRIC Errors and tollernaze. dimensional tolerances, types of coupling, ISO system. Tree-hole pair. Outline of geometric tolerances. normal numbers. Surface condition, roughness and surface finishes. 6. CONNECTIONS shaft-hub couplings by hot forcing. Sticks, tabs, splines and plugs. The threads, the main thread types (metric ISO, gas, Whitworth, trapezoidal, saw-tooth, Edison, etc.), The main elements of a thread. The main threaded elements, screws, bolts, studs, nuts and bolts classes. Notes on welding and on nails. 7. MOTION TRANSMISSION AND OTHER PARTS OF THE MACHINES sliding bearings. thrust bearings. Rolling bearings, ball bearings, roller bearings, conical, in the cages. bearing graphical representation. Selection criteria and their assembly. transmitting the rotary motion (transmission ratio, friction wheels). Sprockets, type and their representation seals and gaskets. Soft. 8. ELEMENTS DESIGN ASSISTED AND SOLID MODELLING.



Textbook Information

1 . E. Chirone, S. Tornincasa, Disegno tecnico industriale, vol. I e II, ed,
Il Capitello, Torino, 2018.
2. M. Carfagni, F. Furferi, L. Governi, Esercizi di Disegno Meccanico, Zanichelli.
3 .G. Bertoline, E. Wiebw, Fondamenti di comunicazione grafica,
McGraw-Hill.
4 . F. Caputo, M. Martorelli, Disegno e progettazione per la gestione
industriale, Ed. Scientifiche Italiane
5 . M. Calì, G. Fatuzzo, R. Licciardello, Le costruzioni geometriche nel
disegno tecnico, Bonanno Editore, Catania, 2000.
6 . S. Gambera, S. Licciardello, S.M. Oliveri, Designazione dei materiali
da costruzione con particolare riferimento allo stato superficiale,
Bonanno Editore, Catania, 2000.
7 . SKF Industrie S.p.A, Catalogo e manuale tecnico dei cuscinetti.
8. Manuale dell'Ingegnere Meccanico a cura di P. Andreini, Hoepli
9 . L. Baldassini – Vademecum per Disegnatori e Tecnici, Hoepli




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