Learning outcomes
Students will acquire:
- basic knowledge in industrial design and drafting, with particular reference to the mechanical application field.
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.
Students will acquire:
- basic knowledge in industrial design and drafting, with particular reference to the mechanical application field.
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.
teacher profile teaching materials
• 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.
• Introduction to gears, definition of parameters, and table representation.
• Opzione 1: E. Chirone, S. Tornincasa, Disegno Tecnico Industriale, Vol. 1-2, Il Capitello, 2024, ISBN 9788842634058 e ISBN 884267771X
• Opzione 2: Barone S., Poli A., Razionale A. V., Berretta M., Disegno tecnico industriale, 2ª ed., CittàStudi, 2024, ISBN 9788825174663.
Moreover, some possible English books are reported here:
• 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;
Programme
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.
• Introduction to gears, definition of parameters, and table representation.
Prerequisiti
Basic concepts of analytical and descriptive geometry. Knowledge of Cartesian planes, point coordinates, key constructions of regular polygons inscribed in circles (such as the hexagon and pentagon), and the method of orthogonal projections. Ability to frame a drawing sheet and use basic drawing tools on paper, such as a compass and 45° and 30°/60° set squares.Core Documentation
In addition to the lecture slides available on the course's Moodle site, we highly recommend deepening your understanding of the subject with a reference textbook. Students can choose between two reference texts in Italian: one in two volumes and the other in a single volume.• Opzione 1: E. Chirone, S. Tornincasa, Disegno Tecnico Industriale, Vol. 1-2, Il Capitello, 2024, ISBN 9788842634058 e ISBN 884267771X
• Opzione 2: Barone S., Poli A., Razionale A. V., Berretta M., Disegno tecnico industriale, 2ª ed., CittàStudi, 2024, ISBN 9788825174663.
Moreover, some possible English books are reported here:
• 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;
Reference Bibliography
• E. Chirone, S. Tornincasa, “DISEGNO TECNICO INDUSTRIALE”, Vol. 1-2, 2024, Edizioni Il Capitello. • Barone S., Poli A., Razionale A. V., Berretta M., Disegno tecnico industriale, 2ª ed., CittàStudi, 2024.Attendance
Attendance is optional but strongly recommended.Type of evaluation
The assessment of the learning level consists of a 'single test' that includes a graphical representation exercise and a list of four questions and exercises to be answered in written form. The graphical representation exercise involves orthographically depicting a mechanical component according to ISO standards for mechanical drawing on a hand-drawn technical drawing sheet; therefore, students must come to class with drawing paper and all necessary materials. The four-question part covers the entire Machine Drawing program, including practical exercises discussed in class, such as calculating clearances and interferences in shaft-and-hole fits or representing mechanical parts according to ISO standards. The final grade is expressed on a scale from 18/30 to 30/30, with the possibility of honors, by averaging the score from the first part (graphical representation) and the second part (responses to the four questions), divided into questions and exercises. To pass the exam, students must score at least 18 in both the graphical part and the part with responses to the four questions. The maximum grade is awarded when the student demonstrates a thorough understanding of all topics covered during the course and has achieved a high level of competence in applying theoretical methods. Honors are reserved for those who master the topics and tools, go beyond the required results, and demonstrate in-depth knowledge of the subject and a high capacity for analysis and re-elaboration. The single test lasts 2 hours, with an additional 50% of the time available to eligible students.