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Unit 017 – Computer Aided Drafting in Engineering – Level 3 – 10 Credits [A/600/0267]

Aim and purpose

This unit gives learners the knowledge and skills needed to use computer aided drafting (CAD) techniques in an engineering context.

Unit introduction

Computer aided drafting is fast becoming the primary means of communicating design information in many industry sectors, particularly in engineering and manufacturing. Two-dimensional (2D) CAD drawings and three-dimensional (3D) CAD data can be shared with computer numerical control (CNC) machines using computer aided manufacturing (CAM) software. 3D models can be rendered to produce photo-realistic representations, or can be animated to produce moving views of products and components as they would appear in service. Additionally, models can be used to analyse features such as mass, volume and mechanical properties.

This unit will enable learners to produce a variety of CAD drawings, from single-part 2D components to complex 3D models. Advanced techniques, such as using pre-prepared symbols to construct circuit diagrams and assembly drawings, will provide opportunities for learners to develop their skills. Learners will also investigate the use of CAD in industry, the hardware and software required and the links with other software packages. In doing this learners will appreciate the advantages of CAD over more conventional methods of drawing production.

Finally, learners will generate 3D models, make comparison with 2D CAD drawings and evaluate the impact of this technology on manufacturing companies and their customers.

The unit as a whole provides an opportunity to carry out practical CAD activities using a full range of commands and drawing environments. In addition, learners will gain an understanding of the use and impact of CAD on the manufacturing industry.

Learning outcomes

On completion of this unit a learner should:

  1. Know the advantages of using CAD in comparison with other methods
  2. Know about the software and hardware required to produce CAD drawings
  3. Be able to produce and interpret CAD drawings
  4. Be able to use CAD software to produce 3D drawings and views.

Recommended Resources


Ambrosius L – AutoCAD 2009 and AutoCAD LT 2009: All-in-one Desk Reference for Dummies (John Wiley and Sons, 2008) ISBN 0470243783
Cheng R – Using Pro/Desktop 8 (Delmar Publishing, 2004) ISBN 1401860249
Conforti F – Inside Microstation (Delmar, 2002) ISBN 1401814816
Simmons C and Maguire D – Manual of Engineering Drawing to British and International Standards (Newnes, 2004) ISBN 0750651202
Yarwood A – Introduction to AutoCAD 2009: 2D and 3D Design (Newnes, 2008) ISBN 0750689838





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