Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing What is CADD ? Computer-aided drawing is a technique where engineering drawings are produced with the assistance of a computer and, as with manual drawing, is only the graphical means of representing a design. Computer-aided design, however, is a technique where the attributes of the computer and those of the designer are blended together into a problem-solving team.
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing Two-dimensional (2D) computer drawing is the representation of an object in the single-view format which shows two of the three object dimensions or the mutiview format where each view reveals two dimensions.
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing Three-dimensional (3D) computer drawing is the coordinate format. Three dimensional computer aided drawing allows the production of geometric models of a component or product for spatial and visual analysis.
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
Milling Jig Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing A few examples from engineering disciplines will demonstrate the versatility of modern CAD systems. · Aerospace: Layout drawings, part drawings, subassemblies, assemblies · Chemical: Process schematics, process plant layout drawings · Civil, Construction: Structural detail drawings, site plan drawings, construction drawings, road - use plans · Electrical, Computer: Circuit board design, very large system integration (VLSI) design · Industrial and Manufacturing: Manufacturing plant layout drawings, subassemblies, assemblies · Mechanical : part drawing, subassemblies, assemblies Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing The advantages of using CADD systems are listed as follow:
constant quality drawing saving on repetition creation of database greater accuracy creation of library multicolour drawings use of layers editing functions
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
History and Background
1963 Sketchpad in MIT
The first computer aided drawing system was introduced by IBM
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
History and Background – 2 In modern systems the light pen has been replaced by more effective pointing hardware, that is a digitizer tablet, a mouse
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
CAD system and Hardware (a) the mainframe computer (b) the minicomputer (c) the microcomputer
Input Devices The input devices are used for making selections from a menu, which is a layout of a variety of commands and functions required to operate the system. Sending these commands into the computer produces complete engineering drawings.
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
CAD system and Hardware –2
Output Devices The output devices receive data from the computer and provide an output, hard copy.
(a) impact printers (dot matrix) (b) non-impact printers include electrostatic, ink-jet and laser (c) 3D printers (d) flatbed plotters (e) drum plotters Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
The User Interface CAD systems may be considered as comprising a large number of functions for creating or manipulating the design model. Traditionally, there are two ways in which this is achieved:
Command-based systems Command-based systems operate by reading a command and its parameters entered by the user, carrying out the required actions, then waiting for the next command.
command (optional parameters , target object) Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
The User Interface –2
Menu-driven systems The menu-driven approach contrasts markedly with the command approach. The basic principle is that the user is at any time presented with a list or menu of the functions that are available to be selected. The most important of these rules are: A clear, well presented screen layout. Easy function selection by a well-structured menu system. Meaningful function names. Meaningful and helpful prompts to the user. Easily accessible and clearly written help information.
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
CADD FUNCTIONALITY The main benefits of a computerized draughting and design system over those of manual methods is this ability to represent the design of a component or assembly in a geometrically accurate format so that the same model can be used for other modelling, analysis and manufacturing work. The functions can be said to fall into three categories: Synthesis type functions are concerned mainly with the creation of geometric features and drawing details Modification functions include those which allow for the deletion and editing of existing geometry or detail. Management functions are concerned with how the drawing is presented both on the screen and eventually on paper.
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
CADD SYSTEM SELECTION There is a large variety of different CADD packages available on the market these days and the design manager is faced with the enormous problem of selecting a package to suit the demands of the company and its product range. A lot of ease and efficiency has been obtained with the use of CADD systems. Among the more widely used CAD systems are AutoCAD, CATIA, SolidWorks, I-DEAS, and ProEngineer. Most of these packages have both a 2D and 3D component or have an integrated 2D and 3D modeling system. The newer versions of drawing software operate under a menu system which can be accessed through keyboard input or mouse manipulation. Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
CADD SYSTEM SELECTION – 2
According to these factors, the system must have;
Functional abilities: the abilities to perform memory circuits. Memory capacity : evaluation between main and branch memory circuits. Data transfer characteristics : when we consider data transfer between two computers, or a main computer and a station, we have to keep in mind the need to decrease computing time Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
CADD SYSTEM SELECTION – 3 The size of the company and the amount of investment capital available will be one of the main deciding factors but there are many other questions to be considered: Mainframe or PC/workstation platform? Two dimensions or three? Lines, surfaces or solids? Other analysis tools needed? Will the ability to transfer the geometry to these modelling and analysis systems be needed? Compatibility with other systems needed? How good is the maintenance and support from the suppliers? How much, how good and how long is the training? How easy is it to expand the system? Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
AutoCAD - AutoCAD 2012, 2011, March 22 AutoCAD is PCbased CAD software products (late 1982). System Requirements for AutoCAD Windows NT or Windows 95/98/2000/…2013 Pentium processor or compatible 32 MB of RAM 50 MB of hard disk space 64MB of disk swap space 2.5 MB of free disk space during installation only CD-ROM drive 640 x 480 VGA video display (1024 x 768 recommended) Windows-supported display adapter Mouse or other pointing device Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
MECHANICAL DESKTOP
Mechanical Desktop offers greater ease of use, flexibility and speed, 2D drawing capabilities for mechanical design, and greatly expanded 3D goemetric coverage. Mechanical Desktop is an integrated package of advanced 3D modeling tools, and 3D drafting and drawing capabilities that help you conceptualize, design, and document your mechanical product. Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
Part / Assembly Environment
Assembly Mode
Scene Mode
Drawing Mode
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
PRO/ENGINEER Creo Elements/Pro, a product formerly known as Pro/ENGINEER is a parametric, integrated 3D CAD/CAM/CAE solution created by Parametric Technology Corporation (PTC). The Pro/ENGINEER name was changed to Creo Elements/Pro on October 28, 2010, coinciding with PTC’s announcement of Creo, a new design software solution Pro/ENGINEER or Pro/E, is a three-dimensional (3D), feature-based, solids modeling system. It was developed by Parametric Technologies Corporation (PTC) in the late 1980s. Features are three-dimensional (3D) geometries that have direct analogies to shapes that can be machined or manufactured, such as holes or rounds. Feature-based solids modeling creates and modifies geometric shapes that make up an object in a way that readily represents common manufacturing processes.
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
Message area Menu bar Tool bar
Graphic window
Help area Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
SOLID WORKS SolidWorks is a 3D mechanical CAD (computer-aided design) program that runs on Microsoft Windows and is being developed by Dassault Systèmes SolidWorks Corp., a subsidiary of Dassault Systèmes, S. A. (Vélizy, France). SolidWorks is currently used by over 1.3 million engineers and designers at more than 130,000 companies worldwide. SolidWorks is mechanical design automation software that takes advantage of the familiar Microsoft® WindowsTM graphical user interface. This easy-to-learn tool makes it possible for mechanical designers to quickly sketch out ideas, experiment with features and dimensions, and produce models and detailed drawings.
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
History SolidWorks was founded in December 1993 by Jon Hirschtick with headquarters in Concord, Massachusetts, USA, who recruited a team of engineers to build a company that developed 3D CAD software that was easy-to-use, affordable and available on the desktop, with its headquarters at Concord, Massachusetts, and released its first product, SolidWorks 95, in 1995. In 1997 Dassault Systèmes, best known for its CATIA CAD software, acquired the company and currently owns 100% of its shares. SolidWorks was headed by John McEleney from 2001 to July 2007 and Jeff Ray from 2007 to January 2011. The current CEO is Bertrand Sicot. Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
Name/Version Version History Value Release Date SolidWorks 95 44 1995 Release SolidWorks 96 243 1996 history SolidWorks 97 483 1996 SolidWorks 97Plus 629 1997 SolidWorks 98 817 1997 SolidWorks 98Plus 1008 1998 SolidWorks 99 1137 1998 SolidWorks 2000 1500 1999 SolidWorks 2001 1750 2000 SolidWorks 2001Plus 1950 2001 SolidWorks 2003 2200 2002 SolidWorks 2004 2500 2003 SolidWorks 2005 2800 2004 Solid Works 2006 3100 2005 SolidWorks 2007 3400 2006 SolidWorks 2008 3800 July 1, 2007 SolidWorks 2009 4100 January 28, 2008 SolidWorks 2010 4400 December 9, 2009 SolidWorks 2011 4700 June 17, 2010 SolidWorks 2012 5000 September, 2011 SolidWorks 2013 6000 September, 2012 SolidWorks 2014 7000 October 7, 2013 Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
File format SolidWorks files use the Microsoft Structured Storage file format. This means that there are various files embedded within each SLDDRW (drawing files), SLDPRT (part files), SLDASM (assembly files) file, including preview bitmaps and metadata sub- files. Various third-party tools (see Structured storage) can be used to extract these sub-files, although the subfiles in many cases use proprietary binary file formats. Solidworks 2010 SP3.1 opens/saves following file formats: SolidWorks Files (*.sldprt, *.sldasm, *.slddrw), Part Files (*.prt, *.sldprt), Assembly Files (*.asm, *.sldasm), Drawing Files (*.drw, *.slddrw), DXF (*.dxf), DWG (*.dwg), IGES (*.igs, *.iges), ProEngineer Part (*.prt, *.prt.*, *.xpr), ProEngineer Assembly (*.asm, *.asm.*, *.xas),UGII (*.prt), Autodesk Inventor Part (*.ipt), Autodesk Assembly (*.iam), Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
I-DEAS (INTEGRATED DESIGN ENGINEERING ANALYSIS SOFTWARE)
I-DEAS (Integrated Design Engineering Analysis Software) is a computer aided design (CAD), manufacturing (CAM), and engineering (CAE) package. I-DEAS is a complete Mechanical Computer Aided Engineering System for the engineering department. It provides full function design, analysis, drafting, testing, and NC programming in support of mechanical design automation. This software was designed to facilitate a collaborative concurrent engineering approach to mechanical engineering product design and analysis.
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
I-DEAS The package is separated into five distinct families, which are selected from the first menu option entering I-DEAS. I-DEAS Solid Modelling (Geomod) I-DEAS Drafting (Geodraw) I-DEAS Engineering Analysis (Supertab) contains finite element modelling for finite element solvers such as ANSYS or ABAQUES. I-DEAS System Dynamic (Systan) is used to design complex mechanical system. I-DEAS Test Data Analysis (TDAS) offers tools for general and specific data analysis, project management, and data acquisition
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
I-DEAS
Design Application Modeler Task Drafting Simulation Manufacturing Test
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
Dr. Aylin Gurkok - Florida International University - College of Engineering - Department of Mechanical and Materials Engineering - Miami
1. Introduction to Computer Aided Drawing
Web Pages for CAD softwares
Autodesk home page www.autodesk.com Pro-Engineer CAD Software www.ptc.com I-DEAS CAD software home page www.sdrc.com SolidWorks CAD software home page www.solidworks.com CATIA CAD software home page www.intergraphics.com CADKEY software www.cadkey.com