Assembly Design V5R8 Update

8/11/2019 Assembly Design V5R8 Update

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Copyright DASSAULT SYSTEMES 2002 1

Assembly DesignV5R8 Update

CATIA Training Foils

Version 5 Release 8January 2002

EDU-CAT-E-ASM-UF-V5R8


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Objec t ives o f the co urse :

In th is c ours e you wi l l learn n ew and enh anced capabi l i t ies of V5R8 CATIAAssemb ly Des ign workb ench

Targeted audienc eCATIA V5R7 Users

Prerequis i tesCATIA V5R7 Assembly Design

0.5 day

Assembly Design V5R8 Update


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Table of Contents

1. Constraints 04Constraint Name 05Over-constrained Assemblies 06

2. Deactivating a Component 083. Propagating Position to Reference 134. Symmetrical Sub-Assembly 165. Measuring, Sectioning, Clash 22

Measuring Minimum Distance 23Sectioning 24Clash 33


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Constraints

You w il l learn enhancem ents and new c apabi l i t ies re lated to assemb lies

cons t ra in t s

Constraint Name

Over-constrained Assemblies


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Constraint Name

The name of a con straint displays w hen passing the mo use over that constraint .

V5R8



Over-constrained Assemblies (1/2)

You can show al l constraints in volved in an over-constrained loop . V5R8

This following scenario shows you what happens when the applicationdetects an over-constrained assembly :

Over-constrained assembly

1

Two offset constraints

Edit an offset constraint and keyin a different value

Key in 60 mm



Over-constrained Assemblies (2/2)

2 Update the Assembly

V5R8

The update operation detects difficulties to obtain a validconstrained system: a dialog box appears providing thediagnosis of the problem.

The constraints involved in the inconsistent or over-constrained system are displayed. The applicationindicates :

The constraint causing trouble (Offset.14)

The constraint Offset.16, which is valid but involved in theinconsistent or over-constrained system



Deactivating a Component

You w il l learn new capabi l i ty re la ted to m anage assem blies

Deactivating a ComponentBOM

V5R8



Why Activate and Deactivate a Component ?

Visualization(Shape

Representation)

BOM(Bill of

Material)

Accessibility(possibility of

applying constraints)

NO SHOW Hiding

components NO YES

YES, you can applyconstraints between

the hidden object andthe other components

in the show space.

UNLOAD

Unloading aComponent NO NO NO

Deactivatinga Node

NO YES YES, you can apply aconstraint even if theshape is deactivated.

Deactivating aTerminal

NodeNO YES YES

Deactivatinga

ComponentNO NO NO

V5R8



Deactivating a Component (1/2)

Select the instance and Right click todisplay the Contextuel menu1

2 Select the Clamp2 object-> Activate/Deactivate Component

Its shape is deactivated and there are no traces of itsspecifications in the Bill Of Material

The symbol in the specification Tree shows you that it isstill possible for you to reactivate it by the reverseoperation



Deactivating a Component (2/2)

As o ppos e to Deact ivate a Node, Deact ivat ing a Com ponent in side a assem bly m eansdelet ing i ts representat ion in al l the CATIA docu ments c ontaining th is assembly .



BOM



Propagating Position to Reference

You w il l learn n ew capabi l i ty re la ted to m anage f lexible assemb lies

Deactivating a ComponentBOM

V5R8



Propagating Position (1/2)

1 Modify position of the Flexible Base

Instance.

: flexible instance

: rigid instance

This Product con tains 2sub-assemblies :Base.CATProductBase_unit .CATProduct

Flexible sub-assembly

We can apply overloaded posi t io n of o ne f lexible instance to reference ( ini t ia l r igidposi t ion)



Propagating Position (2/2)

2 Apply overloaded position to reference

Select th e f lexible Base instance MB3+ .object+Propagate

posi t io n to reference

Result : all rigid instancesshould have the same positionthan the flexible one.

Internal position of flexibleinstances are not impacted bythe command and have notnecessarily the same position.

V5R8


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Symmetrical Sub-Assembly

You w il l learn n ew capabi l i ty re la ted to c reate a sym metr ical assembly

Creating Symmetrical Sub-AssembliesCreating New InstancesKeep Links

V5R8


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What Symmetrical Sub-Assembly ?

Create a sym metr ical sub -assemb ly from an original on e, based on asym metry plane.

Generation:

The result of the generation of a symmetrical sub-assembly is another sub-assembly with a similar product structure.

The User chooses between both options ,The parts building the symmetrical sub-assembly are :

Either a symmetrical part from the source part. This involves creating a new part,outside any assembly context, with a new PartNumber . A typical example is theleft door in a car, relatively to the right door.

Either a new instance of the source part, in a positionsymmetric to the original part. A typical example is acars front left wheel, relatively to the front right wheel.


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Creating a Symmetry on Component (1/2)

Select the ico n

You can find it on the Product Structure Tools Toolbar

1

2

The Assembly Mirror Wizard dialog box appears:

The reference plane is now displayed in green.

Select the mirror plane

3 Select the sub-assembly to be mirrored


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Creating a Symmetry on Component (2/2)

By defaul t , CATIA create a new c omp onent b y each Part

4 Results:

4 components created

New Part Number


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Creating New Instances

On this following example , youneed to create new instance aboutthe Wheel and Disk Parts.

Select one component and activateSymmetry wih new instance option

New instance

When the user cho oses to c reate a new ins tance of a sourc e part , a t a mirrored p osi t ion ,a new instance is created in the symm etrical sub -assemb ly, then i ts posi t ion is chos enwith respect to th e symm etry plane, at creat ion t im e.

Only reference plane of the part can be used in determining thetransformation


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Keep Links

Once the symmetrical sub-assembly has been generated, changes inthe source sub-assembly shall allow updating it

FORM associativity:

A change in geometrical shape of the source partleads to update the symmetrical part.

POSITION associativity:

A change of relative position of a component of thesource sub-assembly leads to update the positionof the symmetrical component in the symmetricalsub-assembly.

STRUCTURE associativity:

A change in structure of the source sub-assembly (adding/removingcomponents) leads to update the structure of the symmetrical sub-assembly.

M i S i i Cl h


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Measuring, Sectioning , Clash

You w il l learn n ew capabi l i t ies avai lable re lated to m easure assem blies

Measuring Minimum DistanceSectioningKeep Links

V5R8

M i Mi i Di


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Measuring Minimum Distance

2 Select the computation type Inside one selection :Each selected components are tested against all others inthe same selection

Between two selections :Each component in the first selection are tested againstall components in the second selection

Selection against all :

Each product in the defined selection against all otherproducts in the document

Select the products accordingto computation type

3

Measure minimum

Click on Distance iconThe Edit Distance Window appears

1

4 Click apply to compute the distanceThe Preview window displays selected productsand the minimum distance

It is not possible to keep results on the Specification Tree

S ti i g G l P


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Sectioning : General Process

From product

Position and resize the

Section on thecomponent to section

Open andManipulate the

Section result3

2

create thesection

1

Sectioning : How to use Section Tools?


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Sectioning : How to use Section Tools?

Manipulat ing 2D in Sect ion Viewer

Manipula ting sec t ion p lanes

Kind of Sec t ion

When sect ion is created, the Sectioning Definition dialog box appears

Contextual Menuavailable in the SectionResultts Window

Activate / Deactivate GIrd

Modify Gird Properties

Sectioning : Creating a Section Plane


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Sectioning : Creating a Section Plane

Click on

The plane created will section all components

1

Manipulate your Section Plane2

Create dynamical ly a sect ion us ing a cut t ing p lane

Sectioning : Creating 3D Section Cut


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Sectioning : Creating 3D Section Cut

Edit the desired section plane, slice or box by double clicking

Click on Volume Cut icon

Cutt ing away the m aterial above the plane, beyond the s l ice orouts ide the box to expose the cav i ty wi th in the product

1

2

Sectioning : Manipulating a Section Plane


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Sectioning : Manipulating a Section Plane

Reset Position icon : Restore the plane to its original position

Edit the desired section plane by double clicking it1

Re-dimension the section plane clicking anddragging plane edges

3a

3b Move the section plane along its normal vector clicking overthe plane and drag

Move the cursor over the section plane,section plane edge or local axis system

Translate the plane by pressing MB1 , then MB2and dragging

Rotate the section plane clicking over thedesired plane axis system and dragging

3c

3d

2 The appearance will changeand arrows appear to help youmoving your section plane

Re-dimens ion, mov e and rot ate sect ion p lanes

Sectioning : Positioning Plane


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Sectioning : Positioning Plane

Reset Position icon :Restore the plane to its original position

Edit the desired section plane by double clicking on it

Click on Geometrical Target icon

Point to the target of interest :

Simply Click an Edge or an Axis to position thesection plane normal to the desired edge

Simply Click a Surface to position the sectionplane on the tangent to a surface

Simply Click on a Cylindrical Surface to positionthe Section Plane normal to the Axis

1

2

3

The Rectangle is arepresentation of thesection plane, to assistyou in positioning it

Sectioning : Positioning Plane Using the Edit Position Command


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Sectioning : Positioning Plane Using the Edit Position Command

Edit the desired section plane by double clicking it

Click on to Edit Position

Change the current position :Click X, Y or Z to position the normal vector (z-axis) of theplane perpendicular to the selected absolute axis system

Change the center ofthe plane coordinates :Values in Origin X, Y and Zboxes (absolute systemcoordinates)

Move the section plane :Enter translation step, thenclick +Tx, - Tx, +Ty tomove the plane along theselected axis by the definedstep (local plane axissystem)

Rotate the section plane :

Same as for the translation use, torotate the plane around the selectedaxis by the defined step

1

2

Fill Edit Position Dialog Box 3

Click close to exit and savelast plane position

4

Undo / Redo section plane move

Change the plane / slice / box dimensionsEnter the width of the main section planeEnter the width of the main section planeEnter thickness of the box or the slice(Distance between the 2 parrallel cuting planes)

Posi t ion th e sect ion p lane mo re precisely

Sectioning : Section Viewer (1/2)


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Display the result of the section, in a particular interface Special tools areavailable in this interface, in order to: Display Grid Modify Grid options Rotate section Lock 2D

Viewercontextualmenu



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g ( )

Lock 2DVisualization

Rotate90

Edit Grid PropertiesSwap tosymmetrical

position

Show / No ShowGrid

Horizontal andVertical Grid step

Reset Grid stepsto defaults

Use Absolute Axisor section planecenter as origin

Choose styleof Grid

Fill / No FillSection

Contextual Menu in the Viewer

Clash (1/2)


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( )

Part to Part Clash This is the simplest tool for Clash Detection

Select 2 parts then Click Apply The result isgiven by the traffic lights

Check Clash Window

This is the powerful tool for Clash Detectionin Space AnalysisThis in fact the one you must know

V5R8

It is not possible to save and keep results on the Specification Tree

Clash (2/2)

V5R8


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( )

Choose Computation type :- Clash: products occupy samespace zone- Contact: products in contact-Clearance: products separatedby less than the definedclearance distance

Choose Selection type : Between all components : each product against all otherproducts Inside one selection : within any one selection, tests eachproduct of the selection against all other products in thesame selection Between two selections : each product in the first selectionagainst all products in the second selection Selection against all : each product in the defined selectionagainst all other products in the document

Select the products according tocomputation type

2

1

3

Before Compute the Clash Operations,you will have to fill the Check Clash window

Click apply to calculate the Clash

The Results are displayed at the bottom of theCheck Clash Box

A Preview window displays the selected Clash

4

To Sum Up ...


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In this Course you have seen enhancements and new capabilities about

ConstraintsDeactivate a ComponentFlexible Assemblies with the Propagate Posi t ion to Reference optionSymmetrical Assemblies

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Assembly Design V5R8 Update

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