This course describes about the Projection of sectioned solids,Development of surfaces,Isometric projections,Perspective projections and Computer aided drafting.
Introduction to sections – Introduction, Classification of sections, Sectioning conventions, Conventional representation of materials (In section). Section of solids – Example. Examples – Example.
Development of surfaces - Development of surfaces, Stretch-out-line method, Radial line method. Development of surfaces problems – Example. Intersection of surfaces – Introduction, Methods of determining the line of intersection between surface of two interpenetrating solids, Intersection of two Prisms, Intersection of Cylinder and Cylinder, Example.
Isometric projection – Isometric projection, Isometric projection/view of planes, Isometric projection of a circle, Example. Isometric projection problems – Example. Conversion of Orthographic views to Isometric views – Example.
Perspective projection – Perspective projection, Perspective projection terminologies, Visual rays method, Example. Vanishing point method - Vanishing point method, Example.
CAD system – Introduction, CAD system, Hardware components, Output devices, Software, Types of CAD system, Input devices, Output device, Types of output device (Hard drives), Plotters, Hardcopy unit, Electrostatic plotter. Drafting packages - Computer Output to Micro film (COM) units, Inkjet printer, Laser printer, Dot matrix printer, Display devices, Cathode Ray Tube (CRT) display device, Plasma Panel Display(PPD) device, Liquid crystal display, CAD software. Introduction to CAD – Introduction, AutoCAD, Features of AutoCAD, Importance of AutoCAD. AutoCAD commands - Starting AutoCAD, Invoking AutoCAD commands, Planning for a drawing, Drawing entity point. Line – Line, Drawing entity rectangle, Drawing entity polygon, Drawing entity ellipse. Modifying commands - Modifying commands, Text commands, Dimensioning commands, Cross hatching and pattern filling, Line conventions, material conventions and lettering. Examples – Example. Projection of Points, Lines and Planes – Example. Projection of solids - Solid with axis perpendicular to HP, Example, Solid with axis perpendicular to VP, Example, Solid with axis parallel to both HP and VP, Example, Solid with axis parallel to HP and inclined to VP, Example. Section of solids – Example. Isometric projection problems – Example.