1.101: Introduction to CEE Design Introduction to Shop Drawings - PowerPoint PPT Presentation

1.101: Introduction to CEE Design Introduction to Shop Drawings September 9, 2015

Purpose of a Drawing  Convey information  Aid in design process  Documentation

Types of Drawings  Working (design) sketch  Presentation figure  Engineering (shop) drawing

Working Sketches  Aid in conceptual design  Usually hand-drawn  Pertinent dimensions included

Presentation Figures  Convey design concepts  May be hand drawn or computer generated  May be 2-D or 3-D  May display key dimensions  May display part labels and other text

Shop Drawings  Intended to convey all information necessary to manufacture a part or assembly  Should include:  One or more views of the part  Dimensions  Details and notes  Drawing and part information Drawing name Date Draftsperson Units of measure Scale Quantity Material

Shop Drawings: Views  A drawing will contain at least one view of the part  Typically two or three views are shown  Views are usually 2-D views  A 3-D view (usually isometric) may be included for conceptualization  2-D views are usually orthographic (drawn at right angles)  Orthographic views are most commonly arranged using Third Angle Projection Handouts: Projection Block, Fold Example

Shop Drawings: Line Styles  Help to clarify views of a part  Differentiate between part and dimensions

Shop Drawings: Symbols  Adds information to a dimension  Aids in describing a feature (such as a hole) Common drawing symbols: R = radius Ø = diameter THRU = feature extends “through” the part DEEP = depth of a hole or feature

Shop Drawings: Basics  The most important aspect of a drawing is clarity  Witness lines should extend to features  All features require an X and a Y dimension  Holes are dimensioned to center  Dimensions and details should not reference hidden features  Leave gaps between features and witness lines

Computer Aided Design (CAD)  Software available through IS&T  AutoCAD (Autodesk Suite)  SolidWorks  Software available through CEE  KeyCreator