Politecnico di Torino
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Politecnico di Torino
Academic Year 2017/18
14APGMB, 14APGLS
Engineering Drawing
1st degree and Bachelor-level of the Bologna process in Chemical And Food Engineering - Torino
1st degree and Bachelor-level of the Bologna process in Material Engineering - Torino
Teacher Status SSD Les Ex Lab Tut Years teaching
Violante Maria Grazia ORARIO RICEVIMENTO     39 21 0 21 15
SSD CFU Activities Area context
ING-IND/15 6 C - Affini o integrative Attivitą formative affini o integrative
Subject fundamentals
The basic language of all engineering activities is represented, in the majority of cases, by design processes that involve the engineer in two distinct activities: modeling and communication. In areas such as systems design and analysis, industrial plants and processes, which are typical fields of automotive engineering, the engineer uses technical drawings in order to identify construction solutions, carry out design calculations, and perform a technical-economic comparative analysis of the various solutions. In this sense, technical drawing is not merely a graphical exercise, but becomes a synthesis of the engineer's expertise about a product which must respect economic, manufacturing and functional specifications.
Today, the engineering drawing is a document to communicate, in a complete, precise, unambiguous and rigorous way, all information of an industrial component with the main objective of its manufacturing.
Expected learning outcomes
The students will be expected to acquire the ability to represent and to dimension the most common industrial components, considering their functional and manufacturing requirements, as well as interpreting unambiguously and correctly drawings of parts and assemblies. The module therefore intends to provide undergraduate engineers the knowledge and methodologies necessary for components modeling and graphic description, in accordance to national and international Standards.
Prerequisites / Assumed knowledge
Basic principles of orthographic representations.
Contents
INTRODUCTION TO TECHNICAL DRAWING [6h]:
Technical Standards, drawing conventions

ORTHOGRAPHIC REPRESENTATIONS [12h]:
Orthographic projections, solid intersections, sections. Axonometric projections.

DIMENSIONING AND ERROR REPRESENTATION [12h]:
Dimensioning, standards, functional dimensioning and tolerancing, surface roughness. Basic hole and basic shaft systems. Introduction on Tolerance stack-up and geometric tolerancing.

MECHANICAL PARTS [9h]:
Fastening and joining. Threaded fasteners, definition and standards. Standard pins, retaining rings. Threading systems: screws, bolts, studs and nuts. Introduction on bearings, belts and pulleys.
Delivery modes
Practice consists in the representation of parts using orthographic or Axonometric projections. Parts can be presented stand-alone or are to be extracted from assemblies. Parts must be represented using the best views and sections, completed with dimensions, tolerances and roughness. The functional dimensioning is recommended. Clearance and interference of fits are to be calculated.
The representation is made by hand drawing and using a 3D parametric CAD system. In the 3D CAD, the parts must be modeled and assembled with the appropriate mating constraints. Then, through the software, the 2D drawings for parts and assemblies must be defined.
Texts, readings, handouts and other learning resources
1) C. H. Simmons, D. E. Maguire, Manual of engineering drawing, ed. Elsevier
2) B. Griffith, Engineering drawing for manufacture, Kogan page science
3) C. Jensen, J. D. Helsel, Engineering drawing and design, Mc Graw-Hill
Assessment and grading criteria
The exam consists of a written exam and it is divided in three parts: theory questions, calculation exercises, drawing. The exam has a duration of 2 hours and it is drawn on A4 papers, which represent a millimiter grid to simplify the hand drawing of the parts.
The theory questions are intended to evaluate the theoretical preparation of the students on all the arguments described during the lessons.
The calculation exercises regards fits characterization and the calculation of the taper parameters.
The drawing exercises requires the representation of given objects, using views, sections and dimensioning, or to extract the drawing of a part from an assembly.
For each question or exercise it is shown the corresponding score that will concur to define the final exam evaluation.
During the written test, students cannot use any information source such as books, manuals, notes or technical drawings.
Students cannot take the examination unless they have completed at least 80% of the technical drawings required in the course.

Programma definitivo per l'A.A.2017/18
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