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    CATIA V5Dr Ahmed Kovacevic

    City University LondonSchool of Engineering and Mathematical Sciences

    Room CM124, Phone: 8780, E-Mail: [email protected]

    www.city-design.tk www.staff.city.ac.uk/~ra600/intro.htm

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    Course Schedule

    Lecture 1

    Introduction

    Software Overview

    Part Design and Sketching

    Lecture 2

    Product Structure and

    Assembly Modelling More advance Part Design

    Lecture 3

    Wireframe and Surface

    Drafting

    Lecture 4

    Finite Element Analysis

    Data Exchange Parameters and Formulas

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    CATIA Overview

    CATIA v5 is an Integrated Computer Aided

    Engineering tool: Incorporates CAD, CAM, CAE, and other applications

    Completely re-written since CATIA v4 and still under development

    CATIA v5 is a native Windows application

    User friendly icon based graphical user interface

    Based on Variational/ Parametric technology

    Encourages design flexibility and design reuse

    Supports Knowledge Based Design

    Lecture 1

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    CATIA v5 Philosophy

    A Flexible Modelling environment Ability to easily modify models, and implement design changes

    Support for data sharing, and data reuse

    Knowledge enabled Capture of design constraints, and design intent as well as final

    model geometry

    Management of non-geometric as well as geometric design

    information

    The 3D Part is the Master Model Drawings, Assemblies and Analyses are associative to the 3D

    parts. If the part design changes, the downstream models with

    change too.

    Lecture 1

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    CATIA v5 Applications

    Product Structure

    Part Design

    Assembly Design

    Sketcher

    Drafting (Interactive and

    Generative)

    Wireframe and Surface

    Freestyle Shaper

    Digital Shape Editor

    Knowledgeware

    Photo Studio

    4D Navigator (including

    kinematics)

    Manufacturing

    Finite Element Analysis

    Lecture 1

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    CATIA User Interface

    Menu Bar

    View Toolbar

    Application

    Tool BarFile Toolbar

    Current

    Application

    Online Help

    Lecture 1

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    Interacting with CATIA (1)

    Selecting an Application

    Use the Startmenu to select an

    application

    Working with Files

    Use the File menu to create,

    open, save and print

    Lecture 1

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    Interacting with CATIA (2)

    Display Commands Fly Through

    Fit View

    Layer control

    Pan

    Rotate

    Zoom Normal View

    Standard Views

    View Types: Shaded/ HiddenLine/ Wireframe/ User Defined

    Hide/ Show Hide

    Swap Visible Space

    Properties

    Display Characteristics for an

    object are set by selecting theentity, then pressing the right

    mouse button and selecting

    Propertiesfrom the menu

    Lecture 1

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    Manipulating the Display using the Mouse

    Pan

    Press and hold the middle

    mouse button and move the

    mouse to pan Rotate

    Press and hold the middle

    mouse button then the left

    mouse button and move the

    mouse to rotate

    Zoom Press and hold the middle

    mouse button and click the left

    mouse button then move the

    mouse to zoom in and out

    Using the compass

    Drag the axes or planes of

    the compass to dynamically

    rotate the display

    Multi-select entities by

    holding down the Shiftkey

    Lecture 1

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    More Common Commands

    Copy/ Paste Geometry entities can be

    copied and pasted from onepart to another.

    Paste Special allows you to:

    Paste a complete copy withhistory

    Paste a linked copy

    Paste the result withoutlinking

    Undo/ Redo Allows you to undo previous

    actions

    Redo repeats an action that hasbeen undone

    Hide/ Show

    Allows you to temporarily hide

    entities from the display

    Hidden entities can berecovered by clicking on the

    Swap visible space icon, and

    then selecting the entity to

    make visible

    Update

    Used to update the part after

    modification

    Lecture 1

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    The Specification Tree

    The Specification Tree is displayed on theleft side of the screen while you areworking

    Provides access to the history of how apart was constructed, and shows theproduct structure

    Product entities can be selected from thespec. tree or in the geometry area

    Parts can be modified by selecting them

    from the spec. tree. Click on + to open a tree branch

    Solid Parts are stored in the PartBodybranch of the Part tree

    Lecture 1

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    Getting Help

    The online help library can be accessed by selecting

    the Help -> Contents, IndexandSearch command

    The Help home page provides a search facility, andallows you to browse by application.

    Every CATIA task has a getting started guide

    Lecture 1

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    Getting Help from the CATIA

    Community

    For general information about CATIA from IBM and Dassault

    Systemes refer to:

    www.catia.com

    For access to the database of known problems refer to:

    http://service.boulder.ibm.com/support/catia.support/databases

    The CATIA operators exchange provides a forum for the

    exchange of ideas and advice about using CATIA at:

    www.coe.org

    And look at MemberCenter -> Forum

    Lecture 1

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    Part Design

    The Part Design application is used to create solidmodels of parts

    Solid parts are usually created from 2D profiles thatare extruded or revolved to form a base feature

    The Part Design task is tightly integrated with a 2Dsketching tool

    A library of features is provided to allow user to add

    additional details to a base part Parts can be modified by selecting their features in

    the specification tree

    Parts are stored in files with the extension .CATPart

    Lecture 1

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    Part Design

    Base Features

    Pad

    Pocket

    Shaft

    Reference Elements

    Point

    Line

    Plane

    Dress-up Features

    Fillets

    Chamfers

    Transformation Features

    Translation

    Rotation

    Mirror

    Pattern

    Scale

    Slot

    Hole

    Groove

    Draft Shell

    Thickness

    Lecture 1

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    Sketcher

    The sketcher is used to create 2D sketches of

    designs, and apply constraints to the sketched

    geometry

    The sketcher is now the main environment for

    developing 2D profiles that will be used to build solid

    models (but traditional 2D wireframe techniques are

    available in the Wireframe and Surface application)

    The sketcher provides a flexible environment for

    creating and modifying 2D geometry

    Lecture 1

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    Sketcher

    Entering the sketcher

    Click on the Sketcher icon or

    select Start -> Mechanical

    Design -> Sketcher

    Exiting from the Sketcher

    Click on the Exit icon to leave

    the sketcher and return to the

    3D workspace

    Geometry Creation

    Geometry Operations

    Constraint Creation

    Tools Toolbar

    Snap to point

    Construction Geometry

    Constraint

    Lecture 1

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    Using the Sketcher

    The Sketcher is a parametric design tool

    It allows you to quickly draw the approximate shape

    of a design, and then assign constraints to completethe shape definition

    Constraints can be applied as: Driving Dimensions dimensions that control

    the size of a geometric entity

    Geometric Constraints geometric

    relationships such as parallel, perpendicular,

    tangent, collinear

    Lecture 1

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    Sketching Example

    1. Click on the Sketcher icon

    2. Select the 2D plane to sketch

    on (may be a plane, or the face

    of an existing part), and thesketching window will appear

    3. Sketch the profile

    4. Apply constraints to define the

    exact geometry required

    4. Click on the exit icon to quit the

    sketcher5. Sketch is transferred into the

    3D modelling environment

    Lecture 1

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    Sketching Tips

    To edit an existing sketch ensure that you select the sketch from

    the specification tree, or select an element in the sketch. (If you

    do not do this you will create a new sketch instead of modifying

    the existing one)

    If the sketch goes purple while you are constraining it is over-

    constrained. Generally it is best to Undo the last constraint and

    examine existing constraints to find the problem before

    continuing

    Solids can only be created from sketches that form a singleclosed boundary

    The profile icon allows yo