Tài liệu AIRBUS UKCATIA V5 and Foundation Course Sketcher docx

AIRBUS UK CATIA V5 Foundation Course DMS42188 Page 1 of 65 Issue 1 AN—UG0300111 Compiled by: Kevin Burke Kevin Burke Date: 16/Apr/2003 Approved by: Date: Authorised by: Date: AIRBUS UK Ltd. All rights reserved. Foundation Course Sketcher AIRBUS UK CATIA V5 Foundation Course DMS42188 Page 2 of 65 Issue 1 AN—UG0300111 Contents Session 3 – The Sketcher Workbench 3 An Introduction to Sketcher 4 Renaming a Node name on the Specification Tree . 5 Accessing the Sketcher Workbench 6 Selecting a Sketch Plane . 7 The Sketcher Workbench 8 Sketcher Toolbars and Icons . 10 Selecting and Positioning Geometry . 12 The Profile Toolbar . 14 The Profile Icon . 14 Pre-Defined Profiles 18 Circles and Arcs 22 2D Splines . 24 Conical Shapes 25 Lines 26 Axis Line . 29 Points . 29 Editing the Definition of an Element 32 The Operations Toolbar 33 Create 2D Fillets 33 Relimitation or Trim functions 36 Transformation Tools 39 3D Geometry . 45 Cutting the Part by Sketch plane . 49 Constraints . 50 Constraint and Element Colours . 51 The Constraints Toolbar 53 Create Constraints using a dialog box . 53 Create Constraints by selecting elements 54 Create Automatic Constraints . 56 Animates Constraints 58 Managing Constraints . 58 Linking Constraints Together 60 Further Sketcher Options 63 An alternative way of entering Sketcher . 63 Editing a Sketch 64 Changing the Sketch Support 64 Sketch Analysis Tool 65 AIRBUS UK CATIA V5 Foundation Course DMS42188 Page 3 of 65 Issue 1 AN—UG0300111 Session 3 – The Sketcher Workbench On completion of this session the trainee will: ♦ Be able to access the Sketcher Workbench. ♦ Understand the Sketcher Toolbars and Icons. ♦ Be able create and manipulate 2D Geometry. ♦ Be able to apply and manipulate Constraints. AIRBUS UK CATIA V5 Foundation Course DMS42188 Page 4 of 65 Issue 1 AN—UG0300111 An Introduction to Sketcher The primary use for Sketcher is for the user to define precise and rapid 2D profiles, which can then be used in the definition of surfaces and solids. Within a sketch you can create 2D-wireframe geometry which can be used to produce Solids or surfaces and is represented by a solid line font. 2D-construction wireframe geometry can also be created which is used as an aid to produce the solid 2D- wireframe geometry. To position and control the size of the sketch, geometric and positional constraints are used which are displayed in green. A Sketch Node will be attached to the Specification Tree in which the Sketch Axis, Geometry and Constraints details are held. The Specification Tree can be expanded by selecting the ‘+’ symbol on the Tree Branch or collapsed by selecting the ‘-‘ symbol. Dimensional Constraints Geometric Constraints Specification Tree Wireframe Geometry Construction Wireframe Geometry AIRBUS UK CATIA V5 Foundation Course DMS42188 Page 5 of 65 Issue 1 AN—UG0300111 Renaming a Node name on the Specification Tree You can edit the name of a node on the Specification tree by selecting it with MB1 followed by MB3 to display a contextual menu. Now select Properties to display a Properties panel for the selected In the Feature Name field on the Feature Properties tab is the name of the Node. Select this field and enter the new name for the Node and click OK to apply the change. Node name to be edited AIRBUS UK CATIA V5 Foundation Course DMS42188 Page 6 of 65 Issue 1 AN—UG0300111 Accessing the Sketcher Workbench To access the Sketcher workbench select > Start > Mechanical Design > Sketcher from the Start drop down menu or select the Sketcher Icon from any workbench that allows sketches to be created. If a CATPart is not active a new part will be activated and you will be prompted to enter a part name by following panel on the desktop. Enter a name and click on OK and a new CATPart will open. Note: If the part is to be stored on the vault the name must be in uppercase and conform to the relevant project naming convention. AIRBUS UK CATIA V5 Foundation Course DMS42188 Page 7 of 65 Issue 1 AN—UG0300111 Selecting a Sketch Plane The sketcher icon will now be orange and you will be prompted to select a plane, a planar face or a sketch this is known as the Sketch Support. Select the required plane, face or sketch and the catia desktop will switch to the sketcher workench and graphic display. Select a Plane from the Specification Tree or Graphically. For additional information on creating user defined Planes see the Part Design Session Select a Planar face on an existing solid Select an existing Sketch on the Specification Tree AIRBUS UK CATIA V5 Foundation Course DMS42188 Page 8 of 65 Issue 1 AN—UG0300111 The Sketcher Workbench On entering the Sketcher graphics window a Yellow 2D Axis is displayed containing a vertical Axis ‘V’, a Horizontal Axis ‘H’ and a origin point. This is the Sketch Absolute Axis and you can use these elements to position geometry on the sketch plane by the use of Constraints. Geometry Part Specification Tree Sketcher Workbench Toolbars Sketch Grid Sketch Tools Toolba Sketch Axis V Axis H Axis Sketch Origin AIRBUS UK CATIA V5 Foundation Course DMS42188 Page 9 of 65 Issue 1 AN—UG0300111 The graphic display area will have a Grid displayed on the sketch plane to which geometry can be snapped. It is possible to change sketcher interface features such as the grid size by selecting Tools>Options from the Tools drop down menu followed by the Mechanical Design>Sketcher branch on the displayed panel. The Grid section controls the visibility, size and whether grid snapping is used. The Sketch Plane section allows the sketch plane to be shaded and to automatically position the sketch plane parallel to the screen. The Geometry section allows the creation of circle/ellipse centre points and the manipulation of geometry by the use of the mouse. The Constraints section switches on automatic constraints where appropriate. The Colors section controls element colours. AIRBUS UK CATIA V5 Foundation Course DMS42188 Page 10 of 65 Issue 1 AN—UG0300111 Sketcher Workbench Icon Profile Creation Constraints Selection Icon Exit Sketcher Operations Sketcher Toolbars and Icons There are four main toolbars within the sketcher workbench: - 1. Profile Creation – used for the creation of geometric elements. 2. Operations – for dressing-up (Filleting, Trimming, etc.) and manipulating geometry (Mirroring, Translating, etc.). 3. Constraints – for controlling geometry size and position. 4. The Sketch Tools toolbar – is used for positioning and controlling geometry and is described on the following page. The above commands are also accessible via the Insert drop down menu [...]... the third and fourth define the start and end points of the Parabola Creates a Hyperbola defined by its Focus point using 5 points or locations First select the Focus point, followed by the centre intersect point The third selection defines the Apex, the fourth and fifth define the start and end points of the Hyperbola DMS42188 AN—UG0300111 Page 25 of 65 Issue 1 AIRBUS UK CATIA V5 Foundation Course Creates... Lines DMS42188 AN—UG0300111 Page 28 of 65 Issue 1 AIRBUS UK CATIA V5 Foundation Course Axis Line The Axis Line is used to create revolved Solids and Groove features To create an Axis line select the icon and followed by to points or locations to define the length and position of the line Profile Axis Line Note: Only one Axis line is allowed per sketch and it can not be a construction element Points Creates... radius and finally the last selection indicates the size of the large radius Fourth point First point Third point Second point Creates a Hexagon profile using 2 points or locations The first selection indicates the centre of the Hexagon and the second define the size of the profile Second point First point DMS42188 AN—UG0300111 Page 21 of 65 Issue 1 AIRBUS UK CATIA V5 Foundation Course Circles and Arcs... Polar Tab and enter the Center Point ordinates as required Enter the radius size in the Radius field and click the OK button to insert the circle The circle is generated with the controlling constraints The Center Point constraints are relative to the sketch axis H and V Constraints V Axis H Axis DMS42188 AN—UG0300111 Cartesian defined Circle Page 22 of 65 Issue 1 AIRBUS UK CATIA V5 Foundation Course. .. anywhere on the graphics window with the left mouse button DMS42188 AN—UG0300111 Page 13 of 65 Issue 1 AIRBUS UK CATIA V5 Foundation Course The Profile Toolbar Used to create wireframe geometry with sketcher Creates a profile consisting of lines and arcs Creates pre-defined profiles Creates circles and arcs Creates 2D Splines Creates Conical shapes Creates lines Creates an axis line Creates Points Note:... the command is completed If an open profile is required you can either double click after completing an element or deselect the profile icon to terminate the command If a mistake is made when defining a profile, you can click on the Undo icon during the command to step back through the profile Element snapping indicator DMS42188 AN—UG0300111 Page 16 of 65 Issue 1 AIRBUS UK CATIA V5 Foundation Course. .. Page 12 of 65 Issue 1 AIRBUS UK CATIA V5 Foundation Course Paint Stroke Selection – Select by clicking and dragging a curve through the elements that you wish to select When you double click the mouse button all elements that are crossed by the curve are selected In all cases the selected geometry will turn orange Once you selected the geometry it can be repositioned by click and dragging the left... Issue 1 AIRBUS UK CATIA V5 Foundation Course Creates an Arc using 3 points or locations starting with its limits Select 3 locations (Start point, End point and then Mid point) Again the contextual menu can be used to close to a circle or create a complement arc Creates an Arc using 3 points or locations The first selection indicates the centre point of the arc, the second defines the radius and its... indicates the centre point of the radial axis of the slot The second and third selections define the radius and radial length of the slot The final selection defines the size of the slot Second point Slot Axis First point (Centre of slot axis) Fourth point Third point DMS42188 AN—UG0300111 Page 20 of 65 Issue 1 AIRBUS UK CATIA V5 Foundation Course Creates a Keyhole profile using 4 points or locations The... points or locations There are two methods of creating a lines 1 Create a line by defining its start and end points(default option) The first selection indicates the start point of the line and the second defines the end point DMS42188 AN—UG0300111 Page 26 of 65 Issue 1 AIRBUS UK CATIA V5 Foundation Course 2 Create a line symetrically about a mid point To create a line in this way select the Insert . by: Date: Authorised by: Date: AIRBUS UK Ltd. All rights reserved. Foundation Course Sketcher AIRBUS UK CATIA V5 Foundation Course DMS42188 Page 2 of 65. access the Sketcher Workbench. ♦ Understand the Sketcher Toolbars and Icons. ♦ Be able create and manipulate 2D Geometry. ♦ Be able to apply and manipulate