This module aims to enable the student to communicate component part information in a technical situation. The student will be able to create three dimensional CAD models, interrogate a model history tree and subsequently generate two dimensional drawing layouts with geometric dimensions.
Virtual modelling concepts: Basic principles of ‘surface modelling’ vs ‘solid modelling’, ‘direct modelling’ vs ‘parametric modelling’,
Role of solid modelling in the design process: Capturing design intent. Modelling concepts of part generation, the 3-D environment, model development, identifying the most prominent base feature, feature creation tools, model manipulation - history/modelling tree, Boolean operations. Calculation of mass properties, volume, surface area and mass.
Geometric control: Introduction to constraint systems, geometric and dimensional. Interrelationships between constraints leading to the creation of parametric CAD models.
Geometry datums: Creation of geometric datum features such as datum planes, datum axes, coordinate systems.
Part Modelling Techniques: Feature based modelling, Material addition and removal features. Prismatic parts: Rotary parts: Lofted parts: Thin shell parts. Engineering features: fillet/round, chamfer, hole, rib, draft, mirror, & Pattern.
Drawing layouts: Generating associative drawing layouts from existing three dimensional component parts. Applying a drawing template/format file. Creating orthographic views, section views, auxiliary views and pictorial views. Modifying drawing view properties.
Dimensioning: Creating dimensions on associative drawing sheets.
Data Exchange & Prototype Printing: Data export methods, Neutral formats, proprietary formats. Comparison of industry-standard filetypes. Exporting .STL files for rapid prototyping and design visualization.
