# Module Overview

### Computer Aided Design

The module introduces the student to fundamental Engineering Drawing principles, thus providing the student with visualisation and drafting skills which are fundamental to engineering design concepts of Mechatronics. This module takes a software based approach to developing drawing skills and gives an introduction to CAD software (AutoCAD) that is elaborated on follow-on modules, while simultaneously reinforcing engineering drawing concepts.

MECH H2016

##### ECTS Credits

5

*Curricular information is subject to change

REGULAR AND IRREGULAR FIGURES

Construction of triangles, quadrilaterals and polygons from given data.

PROJECTION OF SOLIDS

Principles of projection: planes of reference, first and third angle projection, auxiliary planes, sectional planes. Points defined by their rectangular co-ordinates. Orthographic projection of solids such as cube, right and oblique prisms and pyramids and other simple irregular solids in various positions so that the axis of the solid is not inclined to more than one principal plane. True shape of sections. Auxiliary projections showing new plans and elevations.

DEVELOPMENTS

Developments, of the surfaces of right prisms, pyramids, and their truncations and combinations. Development of surfaces of other simple solids. Development of the surfaces of oblique prisms, pyramids and their frusta. Note: Prisms and pyramids to include cylinders and cones.

CONIC SECTIONS

Definition of focal sphere, focal points, directrix and eccentricity. Drawing of conic sections. The ellipse, parabola and hyperbola as plane loci. Construction of tangents from points on the curve and from outside the curve. Principal properties of the conic sections.

PICTORIAL PROJECTION

Isometric projection of solids from given data, from models and from orthographic projection. Use of isometric scale: Principles of oblique projection: cavalier and cabinet. Oblique projection of solids from given data.

STANDARD SPECIFICATIONS AND CONVENTIONS

B.S.I. Engineering Drawing Practice. Layout of drawings, lines and linework, lettering and numerals, systems of projection Views on drawings, general, number of views, partial views, simplified representation of symmetrical parts, adjacent parts. Sections, general, cutting planes, hatching, types of section, parts and features of parts not normally sectioned. Principles of dimensioning, general, functional dimensioning, projection lines, dimension lines and leaders Dimensions, linear dimensions, angular dimensions, redundant dimensions. Methods of dimensioning common features, diameters, radii, sizes of holes, positioning of holes and other features in circular arcs, counter-sinks, counter-bores and spot-faces, bolts, nuts and washers, screw threads, keyways and taper features. Abbreviations and symbols. Toleranced dimensions, general, application of tolerances, tolerance on individual linear dimensions, tolerance on functional dimensions. Machining and surface texture symbols, indication of surface texture.

ORTHOGRAPHIC PROJECTION

Use of standard specifications and conventions in producing engineering drawings to scale; in first or third angle projection, including auxiliary views and sections in the following cases:- (i) Fully dimensioned freehand sketches of engineering components. (ii) Working drawings of engineering components from given assembly drawings (iii) Preparation of assembly drawings from given details of components.

On campus face to face lectures and labs

Module Content & Assessment
Assessment Breakdown %
Other Assessment(s)100