OVERVIEW

The course aims at providing students with the basic knowledge, according to ISO standards, for the correct interpretation, understanding and execution of technical drawings via CAD software, with particular reference to the components used in the naval industry (description of geometry, tolerances, processes, materials, etc.). In addition, it shows the symbolic representations of the main structural elements, providing indications for the correct selection of components.

AIMS AND CONTENT

LEARNING OUTCOMES

The course, comprising 12 weeks of lectures and tutorials, aims at covering the necessary skills for the realization of simple technical representations in compliance with international standards, as well as providing the essential knowledge for the implementation of a technical drawing in the Naval industry. The program complies with the current UNI/ISO standards.

AIMS AND LEARNING OUTCOMES

By the end of the course, the students will know how to apply the basics of technical communication languages in mechanical industry to the solution of simple design problems.

Particularly, they will be able to:

1. interpret assembly and component drawings relevant to machines and their components respectively
2. understand details (for example tolerances, roughness, cartouche) contained in the above-cited drawings
3. apply the theoretical concepts to the solution of simple design or verification problems (for example the calculation of couplings)
4. make part drawings of simple mechanical components in orthographic representation and assembly drawings of simple groups of related parts according to standard, in both cases preferably by means of CAD tools
5. apply the relevant standards to achieve the previously mentioned results.

TEACHING METHODS

The course is mainly based on frontal teaching (roughly 60 hours). The activities are organized in lectures and tutorials.  By taking advantage of the concepts taught in the theoretical lectures, tutorials held in the informatics hall are aimed to solve simple drawing and design problems, after an introduction about the key features of the software Bentley Microstation.

The attendance is advisable. Theoretical lessons include a final self-assessment test. Group works are encouraged especially for exercises about assembly drawings.

SYLLABUS/CONTENT

Standardization of technical drawings. Classification of the drawings. General standards: formats and sizing, title block, lines, scale. Representation methods: classification of projections. Introduction to perspectives. Orthogonal and oblique projections. Orthographic projections. Use of orthographic projections: layout and choice of views. Sections: rules, types. Dimensioning: standards, systems, dimensions of geometric elements, functional and technological dimensioning. Dimensional errors: ISO system of tolerances, types and calculation of couplings, general tolerances, tolerance of chained dimensions. Microgeometric errors: definition, measurement, symbols and choice of the roughness. Macrogeometrical errors: geometric tolerancing in outline.

Threads: elements of a thread, types, representation and dimensioning.

Threaded connections elements: bolts (nuts and screws), studs, inserts, unscrewing devices. Removable non-threaded connections elements: keys, mention of plugs, safety rings and stops, splined coupling joints. Outline of permanent connections. Materials for mechanical engineering: designation and notes on mechanical properties, types of materials and heat treatments.

RECOMMENDED READING/BIBLIOGRAPHY

Recommended material

• A collection of the slides shown during the lessons is available.
• E. Chirone, S. Tornincasa, “Disegno tecnico industriale”, vol. 1 e 2, Ed. Il Capitello, Torino, 2006.

Additional consultation books

• Baldassini L., Handbook for designers and technicians, 20th edition, Hoepli, 2010
• UNI - Technical Drawing - General principles and application of mechanical and industrial design, Vol. I-II, 2011.
• UNI - Technical Drawing - Dimensional and geometric specifications for mechanical and industrial design, 2011.

TEACHERS AND EXAM BOARD

Exam Board

FABRIZIO STEFANI (President)

GIORGIO TANI (President Substitute)

DIEGO VILLA (President Substitute)

LESSONS

LESSONS START

https://corsi.unige.it/8722/p/studenti-orario

Class schedule

The timetable for this course is available here: Portale EasyAcademy

EXAMS

EXAM DESCRIPTION

The exam consists of a written and an oral part.

The written exam consists of a Multiple Choice Question theory test. The Multiple Choice Question theory test includes questions about 10 topics of the course. A maximum of 3 questions for each topic must be answered, for a total of roughly 20 questions.

Oral exam consists of a discussion about simple design and drawing exercises as well as specific questions of the test, inclusive of the relevant theoretical topics. The drawing exercise must be preferably carried out by means of a CAD software and completed with all of the information (quote, tolerances, roughness, ...) needed to ensure compliance with the requirements prescribed in the text of the exercise.

ASSESSMENT METHODS

The written exam will evaluate the comprehension of all the main theoretical topics of the course, necessary to read and interpret drawings as well as to perform the overall design of mechanical components and related details, by means of the multiple-choice test. Each question of the test does not require the theoretical study of the theory, but its application for solving the proposed problem. In addition to further verifying the comprehension of the theoretical topics, the oral examination will evaluate the operational skills required for the completion of the exercise theme, i.e. the use of representation and detailing methods in an assembly or component drawing related to a simple mechanical part.

Assessment of students’ learning is based on:  the ability to apply drawing standards and rules; critical thinking skills applied to the exercises assigned during the course; the ability to expose the topics covered with appropriate technical terminology.

Exam schedule

FURTHER INFORMATION

Prerequisites: basic knowledge of how a computer works and of Windows® operating system.