- Docente: Gianni Caligiana
- Credits: 6
- Language: Italian
- Teaching Mode: Traditional lectures
- Campus: Bologna
- Corso: First cycle degree programme (L) in Mechanical Engineering (cod. 0927)
Learning outcomes
The course aims at providing the students with the acquisition of basic skills for drawing all the main machine or plant components and understanding drawings already made by others. After a brief introduction to the geometrical bases, it treats, according to the italian standards, the rules and norms for the right representation of each component, by accounting for the function it plays into the device or assembly and for the cycle it experiences during its manufacturing. Some practical training are provided by utilizing drafting standard tools or hand sketches.
Course contents
Introduction. Conventional and unconventional tools for design and drafting. Use of standard line types and lettering. Utilization of formats and drawing scale.
Descriptive Geometry
Basic geometrical constructions.
Ortographic Mongian projections.
True shape representation of planar surfaces arbitrarily oriented with respect to orthographic projection planes. Sectional views of solids.
Intersections among solids.
Axonometric Pictorial parallel projections (hints).
Design process, standards, dimensioning and error restriction
Standards in technical design and drafting. Third angle projection and sectional view standard methods. Dimensioning. Renard number series. Design process: assembly and single component drawings. Fuctional dimensioning. Production process influence on shape and dimensioning of mechanical components. Fabrication and control dimensioning.
Dimensional tolerancing. Transfer criteria from functional dimensioning to fabrication dimensioning. Measurement and restriction of component surface roughness. Geometrical tolerancing. Maximum material condition.
Description and conventional representation of component assembly devoted to specific tasks
Fasteners and connections. Threaded fasteners. Keys. Splines. Rivets. Welds. Adesive joints.
Guides and bearings. Journal bearings. Rolling contact bearings. Lubrication.
Mechanical Transmission. Shafts, clutches, couplings, belts and pulleys, roller chains, gears, cams, etc.
Readings/Bibliography
UNI M1, Norme per il disegno tecnico, vol. 1,2, pubblicato a cura dell'Ente Nazionale Italiano di Unificazione. piazza Armando Diaz 2, 20123 Milano.
Manfè, Pozza, Scarato, Disegno meccanico, vol. 1, 2, 3, ed. Principato, Milano.
Conti, Disegno tecnologico, vol. 1, 2, ed. Pitagora, Bologna.
Chirone, Tornincasa, Disegno Tecnico Industriale, ed. Il Capitello, Torino.
Sobrero, Corso di Disegno, solo vol. 1, ed. Pitagora, Bologna.
Filippi, Disegno di Macchine, vol. 1, 2, ed. Hoepli, Milano.
Straneo, Consorti, Disegno di Costruzioni Meccaniche, vol. 1, 2, ed. Principato, Milano.
Teaching methods
Course configuration:
- theorethical room classes;
- practical laboratory activities.
Assessment methods
Exam consists in a written test (compulsory for admission to the speech) and a speech (oral test). This module constitutes an integrated course together with Laboratorio di Disegno meccanico T.
Teaching tools
slides and other information can be found on theacher's web
site:
http://diem1.ing.unibo.it/diem/cali/DML_meccanica/DMLcalimecAttuale.html
Links to further information
http://diem1.ing.unibo.it/diem/cali/index.htm
Office hours
See the website of Gianni Caligiana