Università Roma Tre

Learning outcomes
Students will acquire:
- basic knowledge in industrial design and drafting, with particular reference to the mechanical application field.

Course contents
The course aims at providing the students with the acquisition of basic skills for drawing all the main machine components and understanding drawings already made by others. After a brief introduction to the geometrical bases, it treats, according to the international 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.
Students follow a practical training performing hand sketches.

Testi/Bibliografia
CHIRONE, TORNINCASA, Disegno Tecnico Industriale, ed. Il Capitello, Torino.

1 Role of Engineering Drawing
• Introduction, Mechanical Drawing in the design workflow;
• Technical information, general, principles of drawings, Classification of Drawings;
• Layout of drawing sheets, Title Block, Layout of drawing sheets, scales, lines, Folding of drawing sheets;
• Part and assembly representation.
2 International Standards and normative
• Introduction and motivations;
• Standard code of practice for mechanical drawings.
3 Projections
• Projections: principles, definitions, Theories of projection;
• Orthographic projections: Principle of First Angle Projection, Methods of Obtaining Orthographic Views, Presentation of Views, Presentation of Views, Position of the Object, Selection of Views, Development of Missing Views.
4 Sections
• General principles, Section Views, Hatching of Sections, Cutting Planes, Revolved or Removed Section, Half Section, Local Section, Arrangement of Successive Sections.
5 Dimensioning
• General principles;
• Termination and Origin Indication, Method of Execution;
• Methods of Indicating Dimensions, Special Indications;
• Arrangement of Dimensions and Tolerances.
6 Limits, Tolerances, and fits
• Surface Roughness, indications and symbols;
• Fundamental tolerances, fundamental deviations, Method of Placing Limit Dimensions;
• Geometrical tolerance, Indicating Geometrical Tolerances on the Drawing;
• Indication of Feature Controlled, Standards Followed in Industry.
7 Threads
• Screw thread series, nomenclature, normative;
• Thread series and designation;
• Whitworth threads;
• Thread designation, bolted joints, nuts and studs.
8 Joints
• Temporary and Thread joints;
• keys, splines, cotters and pin joints;
• Welded Joints and Symbols;
• Permanent joints, rubber band fasteners.
9 Transmitting the power
• Introduction to motion guides and joints;
• Sliding and Rolling contact Bearings;
• motion guides and joints, transmission parts, gear box.

• E. Chirone, S. Tornincasa, “DISEGNO TECNICO INDUSTRIALE”, Vol. 1, 2022 (Edizioni il Capitello);
• E. Chirone, S. Tornincasa, “DISEGNO TECNICO INDUSTRIALE”, Vol. 2, 2022 (Edizioni il Capitello);

English books:
• Nigel Cross, Engineering Design Methods: Strategies for Product Design, 4th Edition, John Willey & Sons, 2008;
• T.E. French, C. J. Vierck, R. J. Foster, “GRAPHIC SCIENCE AND DESIGN”, 4th edition, McGraw Hill, 1984;
• Giesecke, Mitchell, Spencer, Hill, Dygdon, Nocak and Lockhart, “TECHNICAL DRAWING WITH ENGINEERING GRAPHICS”, 14/e;

Online documentation on the Moodle site of the course.