Engineering Drawing - a.y. 2016/2017


CFU: 6

Period (Year/Semester): II/I

Languade: Italian

Required/expected prior knowledge: 

Antonio Lanzotti - Class A-L
Fabrizio Renno - Class M-Z

Course objectives:
Analysis of technical drawings considering shapes, functions, workability and dimensional tolerances. Skill to realize the technical drawings of machine components, mechanical systems and of simple assemblies, in conformity with international standards. Skill to work out drawings of simple mechanical systems starting from their functional study and critical analysis of different design solutions. Skill to choose elements unified according to the operating conditions.

Tables of contents:
Standardization in Industrial Design. Main Technical Design Standards. Projection Methods. Sectional Views. Overview of the Main Manufacturing Processes. Functional, Technological and Testing dimensioning. Dimensional Tolerances: Limit Sizes, Fundamental Deviations. Fits (Clearance, Transition, Interference). Surface Roughness: Profiles (Actual, Reference, Datum, Mean). Mean Roughness Index, Surface Roughness Number, Machining Symbols. Surface Roughness Symbols on drawings. Relation between maximum roughness and dimensional tolerance. Removable Fasteners. Screwed fasteners: Screw Thread Nomenclature, Forms of Threads; Thread Designation; Screws, Nuts, Bolted Joints. Devices to prevent spontaneous unscrewing. Keys and Pin Joints. Permanent Fasteners: Riveted and Welded Joints. Introduction to the Functional Analysis of Industrial Assemblies. Technological and Geometrical Features Recognition. Representation of Machine Components. Analysis and study of Industrial Patents. Introduction to the Protection of Industrial Property. Patents: Features and Characteristics. Patent Claim and technical drawings.

Education method: 
Lectures, guided practices, discussion and comparison of case studies. Execution of engineering drawings, with increasing difficulties, of parts belonging to mechanical devices and equipment.
To realize individual drawings and critical discussion of industrial components (available on multimedia platform

Textbooks and learning aids:
MOOC Course on Federica WEB Learning Platform (, A.  Lanzotti, “Disegno Tecnico Industriale”.
Text-books: Disegno Tecnico Industriale (2 Volumes), 2016. Authors: E. Chirone, S. Tornincasa, Editor: Il Capitello.
UNI, ISO, EN Rules.
Practice themes and tutorials available on teacher web-site ( 

Assessment will be written and oral. Questions are: open questions, numerical exercises. Evaluation of engineering drawings executed during practices, graphical personalized test and final discussion.

© 2014 Mechanical Engeenering Courses
Department of Industrial Engineering
University of Naples Federico II
Realization and Administration: Rosario Moreschi