italian version

Aims :

The course lays the scientific foundations for various methods of representation. Drawing must be a means to acquire a knowledge of the spatial relations between the different geometrical elements. It must also take into consideration the knowledge of CAD systems.

Topics :

Graphic representation – Historical background – The fundamental problem of graphic representation - Fundamental geometrical entities - The concept of point and straight line to infinity – The geometrical operation of projection and section – Representation methods – Orthogonal projections – Preliminary remarks – The reference system – Representation of the point – Representation of the straight line – Representation of the plane – Conditions of belonging – Conditions of parallelism - Conditions of perpendicularity - Transformation of projections –Representation of solids – Representation of polyhedrons – Representation of special polyhedrons – Intersections between surfaces – Intersections between polyhedrons and planes - Intersections between planes and conical surfaces – Method of auxiliary planes – Axonometric projections - Historical background – Axonometric projection in general – Pohlke theorem – Reduction ratios – Representation of geometrical elements in oblique axonometry - Conditions of belonging – Conditions of parallelism – Oblique axonometry – Orthogonal axonometry – Perspective – Historical background –Geometrical genesis – Representation of geometrical elements – Methods of perspective in the representation of plane figures.
Special requirements of CAD systems – Hardware structure of a CAD Work Station – Mathematical basis of a CAD 2D system – Characteristics – System of plane coordinates – System of space coordinates – Mathematical models – Generation of base elements – Characteristics – Positioning of points – Positioning with coordinates – Digitalisation – Identification –Choice of geometrical elements – Graphics primitive - Modifications and construction in CAD systems – CAD drawing techniques.

Textbooks :

“Segno, Disegno ed Elettronica” – E. Guglielmi. ed. La Nuova Italia Scientifica, Florence 1993. “Il disegno: analisi di un linguaggio” – C. Mezzetti, G. Bucciarelli, L. Lunazzi. ed. La Gogliardica. “Sistemi di Rappresentazione Grafica” – R. Gagliardi, G. Parra. ed. Clua edizioni, Ancona. “Costruzione del Disegno in CAD” – G. Parra ed. Clua edizioni, Ancona

Exam :

The examination involves the presentation and critical discussion of the graphics developed during both the practical sessions (for Descriptive Geometry by means of traditional drawings and for automatic design on magnetic devices)

Tutorial Session :

Tuesday and Thursday 11.00 - 13.00