General information


Subject type: Basic

Coordinator: Julián Horrillo Tello

Trimester: First term

Credits: 6

Teaching staff: 

Pablo Alberto Genovese
Pablo Alberto Genovese 
Pedro Casariego Vales 

Skills


Specific skills
  • CE5: To train for the spatial vision and the knowledge of the techniques of graphic representation, so much by traditional methods of metric geometry and descriptive geometry, as by means of the applications of design assisted by computer.

Description


The purpose of Graphic Expression is to train students to be able to identify, interpret and use graphic representations in the fields of Engineering. Taking into account the industrial regulations of graphic representation techniques.

This course provides the essential basis for supporting graphic representation throughout the career.

Learning outcomes


  1. Know and put into practice the graphic language of representation systems in engineering.
  2. Know and implement applications of graphic expression and computer-aided drawing in 2D and 3D.
  3. Demonstrate manual dexterity in drawing sketches and sketches.
  4. Ability to interpret industrial plans.

Working methodology


  • Expository class sessions based on the teacher's explanation.
  • Face-to-face tutorials. Completion of practical exercises in the theoretical classroom without a computer.
  • Regulated practices in the computer room.
  • Non-contact activities dedicated to the resolution of practical exercises based on the data provided by the teacher. To be performed outside the classroom.

Contents


Generally the contents of the subject of Graphic Expression can be grouped in:

  1. Fundamentals and techniques of graphic representation
  2. Spatial design
  3. Industrial standardization
  4. Representation and interpretation of industrial and architectural plans
  5. Computer assisted applications

Specifically, the contents of the subject of Graphic Expression are the following:

Topic 1 - Dihedral System

  • Dihedral System. definition
  • What is a Projection
  • Dihedral views
  •  2D presentation of the Side view
  • European System and American System
  • Economy of Views
  • Axonometric system

Topic 2 - Graphical expression and normalization

  • Need for graphics in engineering
  • normalization
  • Types of drawings in engineering
  • Technical vocabulary
  • Standardization of plans

Topic 3 - Cuts and sections

  • Purpose of cuts and sections
  • Procedure to generate a cut
  • Differences between cut and section
  • Rules for representing cuts and sections
  • Type of cut
  • Cross sections
  • Elements that cannot be sectioned longitudinally

Topic 4 - Dimension

  • Functional, non-functional and auxiliary dimensions
  • General principles of dimensioning
  • Elements of a dimension
  • Dimensioning of circular elements
  • Provision of the quotas
  • Simplified dimensioning of symmetrical parts
  • Dimensioning of repeated features
  • Dimensioning of conical, pyramidal and inclined surfaces
  • Particular cases of limitation

Topic 5 - Dimensional tolerances

  • Introduction
  • Dimensional tolerances
    • Definition
    • Representation of tolerances
    • Quality tolerances
    • Position of the tolerance zone
  • adjustments
    • Representation of adjustments
    • ISO adjustment systems
  • General dimensional tolerances
  • Verification of dimensional tolerances

Topic 6 - Geometric tolerances

  • Introduction
  • symbols
  • Indications in the drawings
    • Theoretically exact dimensions
    • Tolerance rectangle
    • References and reference elements
    • Multiple references
    • Associated items
    • Application to partial lengths of elements
    • Individual zones with the same tolerance
    • Indication of "Common Area"
    • Projected tolerance zone
    • Partial references
  • Examples of geometric tolerances
  • General geometric tolerances

Topic 7 - surface states

  • Introduction
  • Symbols used in plans
  • Indication of surface roughness
  • Indications of the special characteristics of the State of the surface
  • Indications in the drawings

Topic 8 - Threaded Unions

  • Introduction
  • Characteristics of a thread. Definitions
  • Types of thread profiles
  • Conventional representation and dimensions of the threads
  • Snails
  • Females
  • bolts
  • Asparagus
  • Washers
  • Pins
  • Immobilization of screws and nuts
  • Qualities of screw materials

Topic 9 - Detachable and Non-Detachable Unions

  • PART 1: OTHER DETACHABLE JOINTS
    • Elastic rings
    • Chavetas
  • PART 2: NON-REMOVEABLE JOINTS
    • rivets
    • Welding

Topic 10 - Transmission Elements 1 -  gears

  • Types of gears
  • Profile the tooth
  • Gear elements
  • Calculation of straight tooth gears
  • Representation of cylindrical gears
  • Helical gears
  • Live without end crown
  • Representation of crown worm gears

Topic 11 - Transmission Elements 2 -  Other transmission elements

  • Belt transmission
  • Transmission by chains
  • Shafts and axles
  • couplings
  • Cardan joint

Topic 12 - bearings

  • Definition of bearing
  • Bearing type
  • Simplified representation
  • Bearing fixing systems
  • lubrication abrasive and non-abrasive fillings

Topic 13 - Preferred Numbers

  • Definition of preferred numbers
  • Basic series and derivative series

Learning activities


Attendance:

  • Exhibition of theoretical contents.
  • Solving exercises, problems and cases, with or without computer support.

Non-attendance:

  • Completion of exercises and practical theoretical projects outside the classroom, individually or in groups.
  • Study, work and personal analysis.
  • Tutoring and formative evaluation of the learning process.

The minimum recommended hours that a student must use to pass the subject are the following:

Typology Activity

Hours

Face-to-face

Exhibition of contents

30

100%

Practical individual or group work

30

100%

Completion of exercises or theoretical or practical projects outside the classroom

60

0%

Preparation and performance of evaluable activities

30

0%

Total

150 hours

Evaluation system


The subject is divided into three terms, which will be evaluated independently. The final grade for the regular assessment will be the weighted average of the grades for the three quarters:

  • Quarter 1: 33.33%
  • Quarter 2: 33.33%
  • Quarter 3: 33.33%

The final average mark to pass the subject is 5.

A minimum grade of 4,0 is set in the grade for each quarter to be able to average.

In the event that the grade for any term is less than 4, the subject will be suspended, regardless of whether the final average reaches 5.


Each quarter will be assessed as follows:

  • Theoretical part: The formative activities of acquisition of knowledge and of individual study of the student will be evaluated by means of practical tests and written (50%). The minimum grade for the theoretical part is 4.
  • Practical part: The training activities in which the students carry out some type of individual or group work will be evaluated through the analysis of the work carried out, the documentation delivered (plans, renderings...) as well as the skill and attitude shown during the evaluations and monitoring of the process by the student (50%). The minimum grade for the practical part is 4. The condition for delivering each practical is to have attended the corresponding session.

The qualification will be carried out in accordance with current regulations.

The evaluation is continuous.

 

REFERENCES


Basic

Preciado Barrena, Cándido and Moral García, Francisco Jesús. 2006. Standardization of Technical Drawing. San Sebastián: Donostiarra. ISBN: 9788470633096.

Félez Mindán, Jesús and Martínez, María Luisa. 2008. Graphic Engineering and Design. Madrid: Synthesis; Collection: Synthesis engineering. ISBN: 8497564995.

Ruiz Vassallo, Francisco. 2005. Electrical and Electronic Schematics. Reading and Interpretation. Ed. Copyright creations. ISBN: 84-96300-02-1