The course aims to provide students with the basic knowledge, according to ISO standards, for the correct interpretation and understanding of technical drawings and for drafting, using a CAD software, mechanical components with geometry description and all further information (tolerances, processes, materials, etc.) necessary for their implementation. In addition, it shows the symbolic representations of the main structural elements of machines, and gives directions for their dimensioning and for the choice of parts from commercial catalogues.
In order to facilitate the learning of the methods of representation of 2D tables to the students, grouped in pairs, themes are assigned that they develop independently. The idea is to take advantage of learn by doing and learn by trial and error. The teacher guides and assists the students without interfering with their reasoning and then asks the students to show the result to the whole class. The teacher then highlights and explains the errors and corrects them in real time.
Lectures and exercises using the CAD in computer classroom.
EU Machinery Directive and Italian D.Lgs. 81/2008.
Outlook on Design for Assembly and Manufacturing.
Standardisation: National and International standards. Drawings types. Representation of the shape and size of a mechanical part: the graphic model. Orthogonal projections, sections, dimensioning and relative rules. Overview on other types of projections (axonometric, trimetric, slanted). Tolerances: dimensional, geometrical, surface finishing tolerances. Matings: base-shaft, base-hole systems. Maximum material condition. Envelope principle. Threads. Classes of bolts and nuts. Bearings: types, mounting systems, simplified representation. Gaskets. Devices for dismountable mechanical joining (keys, tapered keys, pins, transversal pins, set-screws, “Seeger” rings, toothed matings) and for fixed assembly (riveting, welding, graving). Guidelines for the shape of mechanical parts in relation to the process used to build them.
Practice: practice will be done in computer classroom by using the CAD software Microstation.
Ricevimento: The teacher is available for the students at the end of each lesson.
LUCIA CASSETTARI (President)
ROBERTO RAZZOLI (President)
ILARIA BENDATO
GIOVANNI BERSELLI
PIETRO GIRIBONE
ROBERTO MOSCA
FABIO ROLANDO
INDUSTRIAL DRAWING
The assessment of learning is done by aggregating the results of the test on computer graphics (drafting of a mechanical part) and oral examination.
Pre-requisites :
Fundamentals on geometry and on the Windows operating system
