Top-Down

DesignToolsManaging

Complex

AssembliesVictor

RemmersHolland

Engineering

Consultants

BVTips

&TechniquesTop-Down

Design

Philosophy2?

2006

PTCTraditional

Design

Approach“Bottom-Up

Design”Design

of

individual

components

independent

of

the

assemblyManual

approach

to

ensure

that

components

fit

properly

and

meet

the

designcriteriaComponents

and

those

placed

in

sub-assemblies

are

brought

together

todevelop

the

top-levelassemblyErrors

are

manually

identified

and

modifications

to

each

component

are

madetomake

the

adjustment.

As

assembly

grows,

detecting

these

inconsistencies

andcorrecting

them

can

consume

a

considerable

amount

of

timeTop

LevelAssemblyComponentDesign3?

2006

PTCComponentDesignComponentDesignPossible

example

Bottom

Up?Mate4?

2006

PTCTop-Down

DesignPhilosophy“Top-Down

Design”Method

of

placing

critical

information

in

a

high-level

locationCommunicating

that

information

to

the

lower

levels

of

the

productstructureCapturing

the

overall

design

information

in

one

centralized

locationDesignInformationComponentComponentComponent5?

2006

PTCA

more

integrated

approach….6?

2006

PTCTop

Down

Design

Stages

– It

is

a

concept.6-Stage

ProcessConceptual

Engineering

PhaseLayouts

and

Engineering

NotebookPreliminary

Product

Structure

PhasePro/INTRALINK,

Model

TreeCapturing

Design

Intent

PhaseSkeleton

ModelsManage

Interdependencies

PhaseReference

Viewer

&

Reference

GraphCommunication

of

Design

Intent

PhaseCopy

Geoms,

Publish

Geoms

&

ShrinkwrapPopulation

of

the

Assembly

PhaseAutomatic

Component

Constraints

&

Component

Interfaces7?

2006

PTCThe

Bobcat

example8?

2006

PTCConceptual

Engineering

PhaseLayouts

and

Engineering

NotebookUnderstand

Existing

SituationHigh-level

RequirementsSpace

AllocationDefine

New

Space

and

Motion2DSketches3DModelsRapid

Iteration

&

ConvergenceAnimationsCapture

Key

Design

IntentParametersNotesSpreadsheetsProprietary

DataStage

19?

2006

PTCPreliminary

Product

Structure

PhasePro/INTRALINK,

Model

TreeQuickly

define

product

hierarchyBefore

any

of

the

components’

geometry

is

definedIntuitive,

automatic

mapping

to

“start

models”Templates

ensure

all

designs

share

the

necessary

commonelements

such

as

layers,

views

&

parametersFoundation

for

efficient

task

distributionAssembly

Population

EnvironmentsPro/E

menus

and

Model

Tree

pop-up

menusPro/INTRALINK

and

PDMLinkComponent

Creation

MethodsEmpty

Components;

Copy

from

start

modelsAutomatic

assembly

of

default

datumsUnplaced,

Partially-

&

Over-Constrained

ComponentsStage

210?

2006

PTCCapturing

Design

Intent

PhaseSkeleton

ModelsWhat

needs

to

happen?Capture

conceptual

design

parameters

within

the

contextof

theassemblyCapture

&

control

critical

object

interfaces

in

a

single,convenient

locationHow? Skeleton

Models…Centralized

pathway

for

communicationFacilitate

task

distributionPromote

well-organized

design

environmentsEnable

faster,

more

efficient

propagation

of

changeSpecial

Treatment

in

BOMs,

Simplified

Reps,

Drawings,Model

Tree

&

Mass

Property

CalculationsUniquely

supported

Scope

Control

SettingStage

311?

2006

PTCManage

Interdependencies

PhaseReference

Viewer

&

Reference

GraphTools

to

Manage

ReferencesExternal

Reference

ControlEnsures

Top-Down

Designmethodology

is

followedIncorporate

design

management

rulesdirectly

into

the

designEnsures

proper

design

reusePro/INTRALINKModelTreeGlobal

Reference

ViewerReference

GraphStage

412?

2006

PTCCommunication

of

Design

Intent

PhasePublish

Geoms,

Copy

Geoms

&

InheritancePublish

Geometry

FeaturesProvides

ability

to

pre-determine

the

geometry

to

be

referenced

by

a

CopyGeometry

featureAllows

designers

to

define

their

interfaces

to

the

rest

of

the

designCopy

Geometry

FeaturesAllows

copying

of

all

types

of

geometrySurfaces,

edges,

curves,

datums,

quilts,

copy/publish

geometryRetains

copied

geometry

name

and

layer

settingsDependency

on

parent

geometry

can

be

toggledCan

be“Externalized”External

Copy

GeometryBuild

relationships

on

external

models

independent

of

an

assemblyUseful

for

coordinate

system

assembly

practicesInheritance

–

Inherit

model

geometry

for

one-way

associativityShrinkwrap

(included

in

Foundation

Advantage

Package)Stage

513?

2006

PTCPopulation

of

the

Assembly

PhaseAutomatic

Component

Constraints

&

Component

InterfacesWhat

tools

are

available

for

populatingtheassembly?Assembly

ToolsDrag

&

Drop

PlacementComponent

InterfacesComponent

CreationWithin

the

context

of

the

assemblyMirror

Parts

orSubassembliesStage

614?

2006

PTCHow

does

Top

Down

Design

relate

to

company

goals?15?

2006

PTCFour

Goals

from

Upper

ManagementCycle

Time

Reduction.Increase

User

Satisfaction

with

Software.Margin

Increase.Cost

Reduction.Whyshouldyouuseit?16?

2006

PTCBenefits:ReduceddesigntimeReducederrors(rightthefirsttime)IncreasedqualityBetterprojectmanagementvisibilityConcurrentengineeringConfidenceintop-levelregenerationKnowledgeofhowmodulesinterfaceTop-levelchangecontrolExample:todesignanalternator...CompleteTop-LevelAssembly540MBAllSkeletonModelsinTop-LevelAssembly70MBWhatinformationshouldadesignerneedtoworkwithmosttimes?NeighboringSu眾bassemblies320MBSubassembly,withSkeletonModelcontainingallrequiredinformation~20MB17?

2006

PTCWhatdoesanexamplelooklike?ThreePhasesPro/INTRALINKPro/CONCEPTISDXPro/ENGINEERPro/NOTEBOOKCONCEPTUALDESIGNCAP待T刪URE蔥D榨ES訴IG嘴NC隆R霉I找TER如IA靠18?

2006

PTCDET免AI毀LE蓄DD半鋼ES滋IGN通ProductDefinition19?

2006

PTCProductDefinition:EngineeringLayoutWhatitis:FirstthingdoneindesigncycleUsedtoevaluatekeyinterfacepointsUsedtoevaluatekeycomponentsofprojectWhatitisNot:ThreedimensionalsolidsFullydetailed20?

2006

PTCAdvantagesofUsingaLayout21?

2006

PTCDocumentdesigninformationinonecentralizedlocationDocumentdesigninformationbeforecreatingsolidmodelsInvestigatedesignoptionswithoutinvolvingtheentireassemblyEasilymakedesignchangesbecauseallofthedesigninformationiscontainedinonelocation#2ProductDefinition:AssemblyStructureWhatitis:VirtualAssembly/BOMUsedtoorganizeassembly&assigningofdesigntasksUsedtoinputnon-geometricaldataup-frontWhatitisNot:ThreedimensionalsolidsFullydetailedFullyconstrained22?

2006

PTCAdvantagesofDefiningPreliminaryProductStructureDefiningtheproductstructurepriortodefininggeometrycanassistyouinorganizingtheassemblyintoman匹ageabletasksthatcanbeassignedtodesignteamsorindividualdesigners.Associatespecificlibraryparts(thataretobeusedont樹heproject)withtheassemblyatthestartofthedesign,preventingconfusionlater.23?

2006

PTCAdvantagesofDefiningPreliminaryProductStructureCont…SubmittheassemblytoPro/INTRALINKorPDMLinkandassignmodelstotheappropriatevaultsorfolders.Individualdesignerscanfocusonspecificdesigntasksinsteadofonhowtheirdesignisgoingtofitintotheov盲erallstructure.Inputnon-geometricalinformationsuchasthepartnumb類er殼,d投玻esi螺gn瞇er覺’s脆n拖a擦me,轉e伴tc健.,敵a惰ta殖v償e饅ry貪娃ear忠ly喪s遲ta遮ge爸.24?

2006

PTC#3ProductDefinition:SkeletonsWhatitis:Zero-massgeometryExactlocationdetailMinimizedgeometricdetailWhatitisNot:ThreedimensionalsolidsFullydetailed25?

2006

PTCAndDefinitelyNotThis!!26?

2006

PTCAdvantagesofUsingSkeletons27?

2006

PTCProvidesacentralizedlocationfordesigndataSimplifiesassemblycreation/visualizationAidsinassemblingmechanismsMinimizesunwantedparent-childrelationshipsAllowsyoutoassemblecomponentsinanyorderControlspropagationofexternalreferencesCentralsourceforinformation28?

2006

PTCBenefitsofCommunicatingInformationFromaCentralSourceTaskdistributionConcurrentModelingManagingExternalReferencesToolsDeclarationPublishGeometryCopyGeometryHierarchyTop_level.asmTop_level_skeleton.prtSub_assy_1.asmSub_assy_1_skeleton.prtSub_assy_2.asmSub_assy_2_skeleton.prt29?

2006

PTC3DDesign…Finally!30?

2006

PTC

Thefoundationisset…buttopologicallymodifiable…it’stimefor3D.

WithReferenceControlManager,youaresafetocreateyourpartsdirectlyintheassembly.MoreThanMeetsTheEye!31?

2006

PTCInterchangeability:FamilyofTablesInterchangeAssemblyLayoutDeclarationsPowerofTop-DownDesign32?

2006

PTCToAchieveAdvancedAutomation,considerusing:RelationsPro/ProgramMiscellaneousTips33?

2006

PTCSeparatePartVersusAssemblyforSkeletonFeaturesAvoidconstructingassembly-levelskeletonfeaturessincethesystemrequiresthatyouperformalleditsofthesefeaturesinAssemblymode.Thecomponentscanbecomeanobstructionanddegradeperformance.Furthermore,youcannoteasilyreuseskeletonfeaturesattheassemblylevelinothersubassemblies.Byusingaseparatepartfile,youcaneditthefeatureinPartModeandreassembleitintomanydifferentassemblies.GeometryFeaturesPlaceallstaticinformationinaskeletonasearlyaspossibleandplacealldynamicinformationlaterinthedesignprocesscycle.MiscellaneousTips34?

2006

PTCDatumsforSkeletonModelsConsiderrenamingskeletondatumsto“sk_”VisualizationUsesimplifiedrepsandtransparencyprolificallytomakeviewingeasierUse“displaystates”tohighlightdifferentitemsatdifferenttimesUsesurfacestoclarifymeaningofcenterlines&axesConceptualizationDon’tbeafraidtousesimplehandsketchesbeforedelvingintocomplexsituations…it’sNOTillegalPro/EWildfireEnhancementsHigh-performanceAssemblyModelingLightweightComponentsRepresentcommoncomponentswithlightweightgraphicsforoptimumdisplayspeedAccuratemasspropertiesandBOMsCustomizablesymbolicrepresentationsFlexibleComponentsRepresentmultiplestatesofasinglecomponentinanassemblyAddressescriticalneedforconsistencybetweenBOMandassemblymodelIntelligentRegenerationAssemblyregenerationisupto80%Faster!35?

2006

PTCHighlightsofTop-DownDesignCaptureknowledge,ordesignintent,allowingyoutoconcentrateonsignificantissuesbymakingthesoftwareperformtedious,repetitivecalculations.Enabletheframeworkforinterchangeabilityofcomponentsallowingforhigh-velocityproductdevelopmentbysupportingrapiditerationsofproductvariations.36?

2006

PTCNewinAdvan