29642 - Mechanical Drawing T (A-K)

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.

      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.

Written test relative to the integrated course of 12 CFU (Mechanic and Automatic Design CI) consists of two parts: - Written theoretical test, structured in a series of questions, within which it is obviously foreseen to perform drawings, which each Student can, at his choice, perform with instruments or in free hand (at this stage, the student cannot read texts, notepads, tables or manuals); - Graphic test (table), consisting in extracting a particular from an assembly and in representing it in accordance with the rules of the technical drawing (during this phase, the student can read texts, notes, tables and manuals). Of course it is prevented to the Student to make any connection to the computer network. Admission to Oral examination is conditioned upon being successful in written test; Oral test consists of a series of questions concerning the topics covered in the program, which, of course, involve the execution of drawings.

Teaching tools

slides and other information can be found on theacher's web site:

http://www.diem.ing.unibo.it/diem/cali/DMA_meccanica/DMAcalimecAttuale.html

Links to further information

http://www.diem.ing.unibo.it/diem/cali/DMA_meccanica/DMAcalimecAttuale.html

Office hours

See the website of Gianni Caligiana