dynamic sketcher

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Copyright DASSAULT SYSTEMES 1999

Dynamic Sketcher - Course

Version 4 Release 2.3

August 2000

FOR-E-TRSKE-03-AL

Dynamic Sketcher


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Copyright DASSAULT SYSTEMES 1999 i-2

Dynamic Sketcher

Course Schedule

Morning Afternoon

Day 1 Modules:

Sketching the Profile Defining Geometric & Dimensional Constraints

Modifying the Profile

More about Sketcher

Associated exercises

Practice on the scenarios provided in the exercise

database of the Dynamic Sketcher course


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Dynamic Sketcher

E.P.S.S.

Task Description Tools Practice on...

General

Introducingthe Dynamic Sketcher

Startingthe Dynamic Sketcher Tools (Menubar)+ Sketcher - /ske - Ctrl + K

- SOLIDE+ CREATE + icon

Profile (3)

Sketching a profile

Creating contours

Drawing freehand

Creating rounded corners

Creating chamfers

Creating points

Creating lines

Creating circles/arcs

Creating ellipses

Creating rectangles

Creating connect curves

Dynamic Sketcher + icon










Profile (1)- Guide (1)- Collar (1)- Pulley (1)

-

Profile (1)- Profile (3)

Collar (3)

Guide (1)- Collar (1)

Guide (3)- Collar (1)

Profile (1)- Profile (3)- Collar (1)- Collar (3)

-

-

-
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Dynamic Sketcher

Managing a profile

Using the compass

Savingthe profile

Cancelling the previous actions

Deletinggeometry

Viewinggeometry

Selectingelements

Dynamic Sketcher +

Dynamic Sketcher + icon - File + Save - Ctrl + S

Dynamic Sketcher + icon - Edit + Undo - Ctrl + Z


Dynamic Sketcher + icon - & mouse keys

View + Reframe/Reframe at/Zoom at


Profile (3)

Profile (2)- Guide (3)

Profile (2)

-

-

Profile (2)

Defining dimensional constraints

Defining a length

Defining a radius

Defining an angle

Defining a distance

Copying/pastinga dimension

Defining a driving/driven dimension

Defining dimensions automatically

Detecting over-dimensioning





Dynamic Sketcher + or menu


Dynamic Sketcher + menu

Dynamic Sketcher

Profile (2)- Collar (3)

Profile (2)- Guide (3)- Collar (2)

Profile (2)- Guide (3)

Profile (2)- Pulley (2)


Profile (3)

-

Profile (3)

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Dynamic Sketcher

Defining geometric constraints

Fixelements

Horizontal/verticalline

Coincidentelements

Concentriccircles/arcs

Tangentelements

Parallelelements

Perpendicularelements

Distancebetween elements

Evaluatecurrent element

Defining geometric constraints

automatically Detecting over-constrained geometry











Dynamic Sketcher

Guide (2)

-


Profile (2)- Guide (1)- Guide (2)- Collar (2)


Profile (1)- Pulley (1)

Profile (2)

-

-

-

Profile (3)

Modifying a profile

Breakingelements

Relimitingelements

Editingelements

Sketcher/Solid integration




Dynamic Sketcher - SOLIDE

Profile (3)

Profile (3)

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Customizing the Dynamic Sketcher

Customizing settings

Color meaning

Pickingelements

Settings + Settings

-

Ctrl + R - Ctrl + E

Profile (1)

-

-

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Dynamic Sketcher

Course Introduction

In order to take full advantage of thiscourse you must first go to the:

Exercises- On industrial cases- Gradual level of difficulty

Course Modules- Main concepts- Associated exercise

The Dynamic Sketcher is a CATIAproduct which allows you to easilycreate and edit 3D planar contours.

Learning path:

You can create and editthese planar contourswith greater ease of use

through direct, mouse-driven manipulation.

Contours can then beused to generate solidand surface geometry.

then
http://skeexo1.pdf/http://-/?-http://-/?-http://skeexo1.pdf/


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Dynamic Sketcher

Course Modules

Defining Geometric

& Dimensional

Constraints

Sketching the

Profile

Here you will learn how to use the Dynamic Sketcher. You will sketcha profile and create a solid part from the profile. You will then edit the

profile and update the solid part.

More aboutSketcher

Modifying the

Profile
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Copyright DASSAULT SYSTEMES 1999 1

Dynamic Sketcher - Sketching the Profile

Dynamic Sketcher

The Dynamic Sketcher allows youto draw any profile to define a 3Dfeature as easily as you would drawfree hand.

The Sketcher allows you to create contours,points, lines, arcs, circles, corners andchamfers. You can undo your previous stepsand erase geometry. Once you have thedesired profile, you can save it to your CATIA

session.

You can add dimensional andgeometric constraints both

during and after sketching.

Planar profiles created withthe Sketcher can be used inthe CATIA 3D world forcreating solids and surfaces.


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Starting the Dynamic SketcherThe Dynamic Sketcher can bestarted from a CATIA session,through the Tools menu.......

....using Ctrl + K...

.... with the /ske command.....

....or by selecting the Sketchericon in the SOLIDE function.


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Creating Geometry (1)

You can create a circle bydefining the center of the

circle and dragging to defineits radius. Or you can definethree points of an arc.

You can create points, linesellipses and rectangles.

You can create rounded cornersand chamfers between consecutive

lines, arcs or circles.

You can draw freehandas the system

recognizes contoursand constraints.

You can create contourscomposed of consecutive

lines,arcs and curves.

You can create and editgeometric and dimension

constraints.

You can create connect curves between two

curves, arcs, circles or lines. The connectingcurve respects point continuity and tangent and

curvature continuity, if necessary.


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Creating Geometry (2)

The compass is an intuitive,easy-to-use tool designed to quickly

create horizontal and vertical lines. Byre-orientating the compass, it also

allows you to define lines parallel toexisting angled lines.

Saves current workand updatesgeometry to CATIA.

Cancels previous actionsallthe way to the beginning ofthe Sketcher session.

Deletes selectedgeometry, dimensions orconstraints.


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Viewing Geometry

Click on an area tocenter it in the

window.

Drag the mouseupwards and the

model is zoomedout.

Drag the mousedownwards and themodel is zoomed in.

Drag the mouse leftor right and the

model pans left or

right.

Drag the mouse leftor right, then up or

down and the modelpans up and down.

Reframes and bringselements into view.


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Dynamic Sketcher - Defining Geometric & Dimensional Constraints

Creating Dimensional ConstraintsDimensional constraintsinclude: length, radius,angle and distance.

Driven dimensions are definedby the geometry (e.g. referencedimensions).

You can copy and

paste a dimensionsvalue to otherdimensions.

Driving dimensions define thegeometry and their values canbe edited.

You can change adriven dimension toa driving and vice

versa.


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Defining Geometric Constraints

You can fix anelements direction

in space.

You can define a

line to be horizontalor vertical.

Geometric constraints aredefined by selecting theelement(s) andclicking theright mouse button.

The element(s) you selectdetermines the contextualmenus options.


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Defining Dimensions Automatically

Select multipleelements

The Sketcher automatically dimensionsselected elements when using the AutoDimension contextual menu item.

Using the Shift key and the

Select icon....

Select the Constraintsicon...


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Defining Geometric Constraints AutomaticallyThe Sketcher can automatically create geometricconstraints on geometry created using CATIAfunctions (LINE, CURVE1, LIMIT1, etc.).

Using the Select icon, trapthe geometry created inCATIA....

Select the Constraintsicon...


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Detecting Over-Constrained

Diagnostics are available fordetecting when the dimensionalsystem is over-constrained.

You cannot modify the

values of dimensions that arecausing an over-constrainedcondition.

Over dimensioning a part cancause an over-constrainedpart.

Over-constrainedgeometry is displayed

in magenta.


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D i Sk t h M dif i th P fil


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Dynamic Sketcher - Modifying the Profile

Solids & the Dynamic SketcherThere are various ways to accessthe Dynamic Sketcher.....

....or select a solid FSUR.

.... define the working plane.....

.... select several CATIAelements that define a plane..... By selecting a prism, revolution, pyramid

or sweep, CATIA extracts the contour(profile) used to build the solid featureand imports the contour as editable(grey) elements into the Sketcher....

Other elements located in the sameplane as the features contour are allimported and editable. Other geometrylying in the same plane, but belongingto other solids are imported asreference only (yellow) elements.

.... select a solid feature.....

Dynamic Sketcher More About Sketcher


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Dynamic Sketcher - More About Sketcher

Customizing Settings

Setting the angular tolerance level(in degrees) allows you todetermine the highlightingsensitivity of the compass arrowswhen creating lines and contours.

Turning off the visualization ofshadow geometry is useful whenyour screen is full of geometry.

Pick Window Sizesets the size of the pickwindow area which determines thesensitivity when picking elements.

The Snap on Valuelets your movethe cursor according to the stepdefinition. The coordinate of thecursor position will always bemultiples of the defined value.

With Minimize Shape Deformationturnedon, the system tries to keep the originalshape of the geometry as much aspossible while applying modifications.

The Automatic Updateoption allowsyou to visualize immediately or not themodifications performed on a profile.

You can either work with CATIAcolors or with Sketcher colors.



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Colors (1)

Sketcher colors convey adifferent meaning than the samecolors in CATIA.....

White: fully constrained element

Grey: editable element

Green: current elementLow light: fixed elements andshadow geometry

Bright blue: horizontal andvertical lines



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Colors (2)

Yellow: non-editable elements importedinto the Sketcher. These elements,although not editable, participate indetection by the compass and can be usedas reference for creating other elements.

Low-intensity blue: drivingdimensions, logical constraints

and associated symbols

Dark yellow: driven dimensions

Magenta: over-constrainedelements



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Element Picking

It can be difficult to pick anelement on a crowded screen.

Ctrl+R: scans backwardsthrough crowded elements

Ctrl+E: scans forward throughcrowded elements

It can be difficult to pick a smallelement on the screen.

Exercise Database


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Exercise Database

Dynamic Sketcher - ExercisesNow play the exercises given below in the prescribed ordertopractice the notions you have learned and discover new ones.

Pulley

Offset Guide

Pipe Collar
http://ske0x.pdf/http://ske0x.pdf/http://ske0x.pdf/

dynamic sketcher

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