HISTORY OF COMPUTER AIDED DESIGN? • 30 Years in making • Replaced traditional methods of creating models • Previously requried engineers to draw advanced models by hand Examples of Computer Aided Design Application COMPUTER AIDED DESIGN - DEFINED • Software used to create simulations of different situations • Form a predictive analysis • Allows for virtually testing a design and make adjustments before production TWO TYPES OF CAD Free Form Software Modeling • Allows designs to create a “skin” over component. • Creating curves in almost any shape desired. • Uses control points called poles to curve and manipulate design Solid Modeling • Method of mathmatically describing interior and exterior of object. • Begins with 2d sketch of closed shape • Extruded or revolved to form sold. • Complex solids are created and assembled into highly complicated objects FREE FORM MODELING EXAMPLE SOLID MODELING EXAMPLES SOLID MODELING FEATURES • • • • • • • • Extrude – Revolve Chamfer Round – assemble Lofting Sweeps Shelling WHY USE CAD ? • Principal reason Cad has been adopted is – decreased time from idea conception to manufacturing • Streamlined product development • Allows design team to communicate more efficiently • Changes can be made quicker and without starting over • Allows design teams from across globe to work together via internet ADDITIONAL CAD VIDEOS WHAT IS CAD ?? CAD ENGINEERING - CENTURY COLLEGE ASSIGNMENT Upload PTC CREO to your Desktop at home.