Teacher

prof.ssa aggr. Barbara MOTYL

Credits

6 CFU

Language

Italian

Objectives

The course has the purpose of: providing the basic knowledge of the theory of industrial technical drawing and of its standards; presenting, with examples, the criteria for the representation and dimensioning of simple machine elements, and also of standardized components; illustrating the characteristics and methods of use of the drawing tools - including two-dimensional CAD publishers - that could represent simple mechanical components, defined in the different stages of development of industrial product; providing the basic knowledge of the organization and management of technical documentation.

Acquired skills

- Fundamentals and rules of the technical drawing.
- Knowledge of current standards of representation and description of industrial products.
- Execution of dimensioned sketches of simple mechanical pieces.
- Use of a 2D CAD tool for the execution of technical drawing.
- Basic concepts for the management and organization of technical documentation.
- Fundamentals of Product Data Management and Product Lifecycle management Systems.

Lectures and exercises (topics and specific content)

Drawing for design and communication: drawing as the fundamental tool for technical communication, for the engineering design and for the documentation of industrial products (1 hour).
Technical drawing standards: standardization and unification; main rules for technical drawing, projection methods, views, sections, dimensioning; tools for technical drawing (4 hours).
Axonometric and orthographic projections: definitions and classification of projections; parallel projections (orthogonal and oblique axonometric projections) and orthographic projections (Monge method and theory) (6 hours).
Section, intersections and developments of surfaces: sections and surfaces of development of prisms, pyramids, cylinders and cones. Intersection of solids and development of surfaces (4 hours).
Sketching and dimensioning of mechanical parts: sketching criteria of simple mechanical parts; choice of views and/or sections; reference systems and dimensioning criteria; functional dimensioning (4 hours).
Tolerancing and surface finishing: errors in pieces construction; tolerancing and fit systems; general tolerances; ISO code system for tolerances on linear sizes; basis of tolerances, deviations and fits; surface finish and roughness, definitions and symbols (4 hours).
Examples of standardized components: fasteners: kinds of fasteners and their classification (1 hour).
Threads and threaded connections: unified thread forms; threaded fasteners; representation of threaded elements, screws, nuts, bolts (4 hours).
Non-threaded connections: shaft and hub connections, keys, tapers and pins (4 hours).
Technical drawings in industrial practice: the role of drawings in design and product life cycle; kind of drawing and fundamentals of technical drawings management (2 hours).
PDM and PLM systems: stages of product development and related support technologies; basic concepts, objectives and advantages of Product Data Management and Product Lifecycle Management systems (4 hours).
Introduction to computer aided drafting: the main functions of a 2D CAD system, drawing, editing, display and properties of geometric entities; criteria for the organization of a technical drawing, scaling and printing (6 hours).
Exercises: ortographic projection from isometric views of simple mechanical parts; sketches and 2D-CAD drawings must be completed with dimensioning and any other relative notations; the arguments of the exercises will be combined with the theoretical topics covered during the course (16 hours).

References

- E. Chirone, S. Tornincasa, "Disegno tecnico industriale", voll. 1, 2, Ed. il Capitello, Torino, 1996 e succ.
- Ente Nazionale Italiano di Unificazione, Norme per il disegno tecnico " Norme generali " M1 Vol. I

Type of exam

Written and oral

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