Using CAD StandardsUsing CAD Standards

Larry PittsLarry PittsPlug Power Inc.Plug Power Inc.

Job SecurityJob Security

job securityjob security ((jjððbb se·cu·ri·ty)se·cu·ri·ty) – –

1. Freedom from risk or danger of becoming 1. Freedom from risk or danger of becoming unemployed. 2. Existing in a stable unemployed. 2. Existing in a stable employment situation. 3. When you are the employment situation. 3. When you are the only one who can work on your CAD models.only one who can work on your CAD models.

RegenersurfingRegenersurfing

regenersurfingregenersurfing ((ree·jen·er·sir·fin)ree·jen·er·sir·fin) – –

1. The act of creating long CAD software 1. The act of creating long CAD software regeneration cycles with the intent of regeneration cycles with the intent of browsing the world-wide-web while “browsing the world-wide-web while “waitingwaiting”.”.

Topics CoveredTopics Covered SketcherSketcher

ModelingModeling

Sheet MetalSheet Metal

PipingPiping

ElectricalElectrical

DrawingDrawing

IntralinkIntralink

Energy Saving TipsEnergy Saving Tips

Avoid logical reference geometryAvoid logical reference geometry

Leave dimensions weakLeave dimensions weak

Constraints are for sissiesConstraints are for sissies

Relations are for the holidaysRelations are for the holidays

Design Intent? Design Intent?

You can be the You can be the “Lord of the Sketch”“Lord of the Sketch”

SketcherSketcher

Energy Saving TipsEnergy Saving Tips

SketcherSketcher

Lord of the SketchLord of the Sketch

““One Sketch to rule them all, One Sketch to One Sketch to rule them all, One Sketch to drive them, One Sketch to bring them all, And drive them, One Sketch to bring them all, And

in the failure-mode bind them.” in the failure-mode bind them.”

Modeling TipsModeling TipsSStart-partstart-partsTTalk is overratedalk is overratedAAllowllow assumptionsassumptionsNNever name featuresever name featuresDDon’ton’t pay attention to error messagespay attention to error messagesAAssembly cutsssembly cutsRReference anythingeference anythingDDo rounds earlyo rounds earlySSlide and leave dimensioning (.86753095)lide and leave dimensioning (.86753095)

SScrew failure mode: Suppress, Package, Freezecrew failure mode: Suppress, Package, FreezeUUnrealistic bend radius’ = untapped advantagenrealistic bend radius’ = untapped advantage CCause a CADastrophyause a CADastrophyKKeep old dataeep old data

Leave Your MarkLeave Your Mark

Leave old data (shared data, unused datums, Leave old data (shared data, unused datums, and other unneeded stuff) in your models so and other unneeded stuff) in your models so they have your personal touch on them. they have your personal touch on them.

Energy Saving TipsEnergy Saving Tips

Sheet metal suppliers are experts at this stuff Sheet metal suppliers are experts at this stuff and might make you look bad.and might make you look bad.

Bend tables limit creativity. Besides, who Bend tables limit creativity. Besides, who wants someone telling them how to design.wants someone telling them how to design.

Never create Flat States. If a part is bent, Never create Flat States. If a part is bent, formed or extended in an unrealistic fashion, formed or extended in an unrealistic fashion, it will fail when unfolded. it will fail when unfolded.

Sheet Metal Sheet Metal Do not make sheet metal parts using the SheetDo not make sheet metal parts using the Sheet Metal application. It limits what you can do.Metal application. It limits what you can do.

Energy Saving TipsEnergy Saving Tips

Unrealistic bend radius’ will failUnrealistic bend radius’ will fail

Referencing saved line-stocks might save a Referencing saved line-stocks might save a lot of time, but they sure do limit creativity. lot of time, but they sure do limit creativity.

Instead use protrusions, and swept Instead use protrusions, and swept extrusions.extrusions.

Use references across many assemblies at Use references across many assemblies at onceonce

Piping Piping Do not use the Piping application. LikeDo not use the Piping application. Like Sheet Metal, it limits what you can do. Sheet Metal, it limits what you can do.

Energy Saving TipsEnergy Saving Tips

Harnesses, connectors and boards are not Harnesses, connectors and boards are not “real” mechanical parts. Don’t waste time or “real” mechanical parts. Don’t waste time or energy worrying about making room or energy worrying about making room or provisions for them in your design envelope.provisions for them in your design envelope.

These things are usually small anyway. These things are usually small anyway. Somebody will be able squeeze them in long Somebody will be able squeeze them in long after you’ve moved on to the next project.after you’ve moved on to the next project.

This way of thinking works great with This way of thinking works great with insulation too.insulation too.

Electrical… SchmelectricalElectrical… Schmelectrical

Energy Saving TipsEnergy Saving Tips

Do not use repeat regions – Easier to cheat a Do not use repeat regions – Easier to cheat a bill of materialbill of material

DTL filesDTL files are for brown-nosersare for brown-nosers

Show all your dimensions and notes – it Show all your dimensions and notes – it makes checkers think you did lots of work makes checkers think you did lots of work and they won’t want to spend time checking itand they won’t want to spend time checking it

DrawingsDrawings

Energy Saving TipsEnergy Saving Tips

No Attributes, No Material, No ProblemNo Attributes, No Material, No Problem

Out of date workspaces. You can always Out of date workspaces. You can always over-ride the hard work of others.over-ride the hard work of others.

.dwg and .prt files in separate IntraLink .dwg and .prt files in separate IntraLink folders. Spread the wealth.folders. Spread the wealth.

Locking parts to prevent use. You can be a Locking parts to prevent use. You can be a show-stoppershow-stopper

Pro/IntralinkPro/Intralink

Energy Saving TipsEnergy Saving Tips

Don’t check to see if a sufficient part already Don’t check to see if a sufficient part already exist in Pro/INTRALINK or ERP before exist in Pro/INTRALINK or ERP before creating a new part. Part numbers and bytes creating a new part. Part numbers and bytes are free.are free.

Only release drawings files. This way you can Only release drawings files. This way you can sneak in a last minute correction by changing sneak in a last minute correction by changing the model without the change-control police the model without the change-control police knowing about it.knowing about it.

Pro/Intralink Pro/Intralink (continued)(continued)

Don’t Invent the Radar PistolDon’t Invent the Radar Pistol

Submit enhancement requestsSubmit enhancement requests

Fill out problem reportsFill out problem reports

Write proceduresWrite procedures

ConformConform

Are you messing things up for the rest of us?Are you messing things up for the rest of us?Do not:Do not:

Energy Saving TipsEnergy Saving Tips

The more different ways we do things, the The more different ways we do things, the better…. right? better…. right?

If you’re smart enough to find a fool-proof way If you’re smart enough to find a fool-proof way to do something, the last thing you want is to do something, the last thing you want is someone else benefiting from your hard work someone else benefiting from your hard work and experience.and experience.

If you set the bar high, the rest of us have to If you set the bar high, the rest of us have to do chin-ups.do chin-ups.

Your fellow slackers will think you are a Your fellow slackers will think you are a brown-noser.brown-noser.

Why write procedures ?Why write procedures ?

RegenersurfingRegenersurfing

Use Circular ReferencesUse Circular References

Do not “shrink-wrap” large Do not “shrink-wrap” large modelsmodels

Leave old reference data inLeave old reference data in

Over detail when possibleOver detail when possible

– Fastener threadsFastener threads

– Extruded textExtruded text

– ScreensScreens

– Unneeded Advanced roundsUnneeded Advanced rounds

More tips for long regenerationsMore tips for long regenerations

RecapRecap Job securityJob security RegenersurfingRegenersurfing Be the Lord of the SketchBe the Lord of the Sketch Leave your markLeave your mark Don’t use SheetMetal or Piping applicationsDon’t use SheetMetal or Piping applications Cables and harnesses are for electrical nerdsCables and harnesses are for electrical nerds Use the “SPF” factorUse the “SPF” factor Do not conformDo not conform Don’t watch the creditsDon’t watch the credits CAD STANDARDS SUCKCAD STANDARDS SUCK

……if you’re aif you’re a bad designerbad designer..

Plug PowerPlug Power

43 minute reduction in assembly model time.43 minute reduction in assembly model time.

Got rid of the beach ballGot rid of the beach ball

Improved SOP’sImproved SOP’s

Improved design intent understandingImproved design intent understanding

Improved supplier collaborationImproved supplier collaboration

Modelcentric productionModelcentric production

50% fewer cabling ECNs for models that include cabling data50% fewer cabling ECNs for models that include cabling data

60% fewer errors in relating drawings to changes60% fewer errors in relating drawings to changes

78% fewer errors in Intralink Gateway push to PDMLink78% fewer errors in Intralink Gateway push to PDMLink

No more broken monitorsNo more broken monitors

Design Cycle BenefitsDesign Cycle Benefits

For more…For more…

visit:visit:

www.baddesign.uswww.baddesign.us