Computer Aided Design and Manufacturing

Recommended Prerequisites

Termodynamics, Applied Thermodynamics, Fluid Mechanics I, (II)

Teaching Methods

Tutorial classes in which the basic concepts underlying the course are presented with analysis of application examples. Conducting problems / projects using the methodologies taught and using commercial software available on the DEM. It is intended that students develop two small projects: (1) a design in CAD and (2) a program in CNC. The program developed in CNC will be tested in the DEM workshop.

Learning Outcomes

The main objectives of this course are: (1) to acquire CAD knowledge regarding the design in engineering and geometric and surfaces modeling ; (2) identify and use the various features of computer programs for numerical control machines (CNC); (3) implement computer programs that allow CAD / CAM systems information processing.

At the end of the course the student must: (1) know the most common CAD / CAM systems and to use its functions; (2) understand the concepts related to the drawing dimensioning and execute drawings of parts or assemblies using CAD systems; (3) Analyze functional mechanisms from reading assembly drawings in orthographic representation; (4) know the basic principles of numerical control systems and associated machine tools; (5) develop CNC programs for machining operations and (6) have basic notions of prototyping technologies.

Work Placement(s)

No

Syllabus

1 - Computer-aided design (CAD)

Drawing parts using operations of the type:

- Extrusion;

- Revolution

- By repeating pattern (circular repeating pattern or linear)

- Scan (sweep)

- Transition between sections (loft)

parametric design

Drawing surfaces through points

dimensioning

Design / mounting hardware sets

Identification and analysis of situations interference / gaps between

parts of an assembly

2 - computerized numerical control (CNC)

Numerical control machine structure (CN)

Workload on CNC machines

CN Programs Organization

Manual programming procedures

3 - Computer Aided Manufacturing (CAM)

Introduction to CAM

Choice of machines and control systems

Machining strategies

Definition of trajectories

4 - Prototyping Technologies

Introduction to Prototyping

Method principle and steps

Advantages and limitations

Commercial prototyping systems.

Head Lecturer(s)

Pedro Mariano Simões Neto

Assessment Methods

Assessment
Project: 40.0%
Exam: 60.0%

Bibliography

- Desenho Técnico Moderno – 4ª Edição. Arlindo Silva/Carlos Ribeiro/João Dias/Luis Sousa (Lidel – Edições Técnicas)

- Luís Veiga Cunha; Desenho Técnico, Fundação Calouste Gulbenkian, 1980

- Américo Costa; Autodesk Inventor - 2.ª Edição Actualizada - Depressa & Bem, FCA Editora, 2005. ISBN: ISBN: 972-722-434-2

-. Carlos Relvas; Controlo Numérico Computorizado: Conceitos Fundamentais, Publindústria Edições Técnicas, 2000

- Hans B. Kief, T. Frederick Waters; Computer Numerical Control, Glencoe/McGraw-Hill, 1992. ISBN: ISBN-13: 9780026764117