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Computer Aided Technical Drawing

Objectives

- To draw the orthogonal projections of a particular piece.

 

- To choose the sectioning planes and their cutting surfaces, necessary for a perfect understanding of the drawing.

 

- To recognize the drawing elements that must not be cutted and represent them.

 

- To recognize the drawing elements where dimensioning must be done.

- To draw the orthogonal projections of a particular piece, using a CAD software tool.

- To buid a 3D model from the orthogonal projections of a particular piece, using a CAD software tool.

General characterization

Code

10413

Credits

3.0

Responsible teacher

João Paulo Heitor Godinho Canejo, João Paulo Miranda Ribeiro Borges, Manuel João Dias Mendes

Hours

Weekly - 3

Total - 33

Teaching language

Português

Prerequisites

Basic knowledge of drawing and geometry.

Basic knowledge of the Microsoft Windows 7, 8 or 10 operative system.

Bibliography

MAIN:

    L. Veiga da Cunha, "Desenho Técnico", 15ª Edição, Fundação Calouste Gulbenkian (2010).

 COMPLEMENTARY:

    Arlindo Silva, João Dias e Luís Sousa, "Desenho Técnico Moderno", 11ª Edição, Lidel (2011).
    Randy H. Shih, "Exploring DraftSight", SDC Publications (2012).

Teaching method

Part I - Initial part of the lesson with exposition of the subjects using examples drawn on the blackboard. Final part with execution of a drawing by students where they apply the knowledge acquired in the previous part.

 

Part II - Initial part of the lesson with introduction to the subjects using specialized software and a projector. Final part with execution of a drawing in computer by the students where they apply the knowledge acquired in the previous part.

Evaluation method

Part I – Basic Technical Drawing (TP):

 

 Ongoing assessment :

 - 2 Tests (T1 and T2).

 - Exemption of final examination obtained with test average (TA) and final score (FS) both greater than 9.5.

 

 Assessment by Final Examination:

 - Examination test (E).

 

Part II – Computer Aided Design (Computer Lab.)

 - CAD Assessment  (CAD)

 

Final score (FS):

 - With exemption of final examination: 60% MT + 40% CAD.

 - Without exemption of final examination: 60% E + 40% CAD.

Subject matter

PART I - BASIC TECHNICAL DRAWING

  • Drafting table. 
  • Technical pencils and pens.
  • Tools for drawing: rulers; compasses; triangles; t-squares, etc
  • Types of lines : visible; hidden; center; cutting plane; section,....
  • Orthographic projections: ISO and american standards.
  • Cuts and Senctions: areas on cuts and sections.
  • Representation of threaded parts/inserts.
  • Dimensioning: linear and angular dimensions.
  • Tolerances.
  • Perspective projections.


PART II -COMPUTER-AIDED DRAWING (CAD):

  • Basic tools. Coordinate systems.
  • 2D drawings - entity creation and edition. Entity grouping. Advanced tools.
  • Sectioning and dimensioning.
  • 3D drawings.
  • Solid modeling.

Programs

Programs where the course is taught: