MME2259MME2259 Design Documentation Design Documentation

Going to ManufactureGoing to Manufacture

Prepared by: Chris VandelaarPrepared by: Chris Vandelaar

Going to ManufactureGoing to Manufacture

Design finalizationDesign finalization

Drawings: Contents – OverviewDrawings: Contents – Overview

Drawings and Drawing packagesDrawings and Drawing packages

Working with University Machine Services Working with University Machine Services (UMS)(UMS)

What makes a design final?What makes a design final?

Design is finished when:Design is finished when:

You have consensus…..You have consensus…..

Majority of stakeholders agreeMajority of stakeholders agree

Design is finished when:Design is finished when:

CAD models are completeCAD models are complete

Include:Include:Fasteners,Fasteners,

Electromechanical components:Electromechanical components:Motors,Motors,

Actuators,Actuators,Power supplies,Power supplies,Limit switches,Limit switches,

Etc…Etc…

Design is finished when:Design is finished when:

Method of fastening chosenMethod of fastening chosen

for all connectionsfor all connections

Permanent -WeldedPermanent -Welded

Temporary/removable - screw Temporary/removable - screw

Tamper resistantTamper resistant

Cost effective – weld, rivet or tapeCost effective – weld, rivet or tape

DFM done for all partsDFM done for all parts

Can it be manufactured?Can it be manufactured?

Cost effectively?Cost effectively?

Virtual AssemblyVirtual Assembly

• Parts – check clearances, alignmentsParts – check clearances, alignments

• Fasteners – include tool accessFasteners – include tool access

• Bottom up assembly?Bottom up assembly?

FastenersFasteners

Ensure maximum material conditions for Ensure maximum material conditions for threaded holesthreaded holes Maximum thread engagementMaximum thread engagement

Proper chamfers on threaded holesProper chamfers on threaded holes prevents thread damageprevents thread damage

Round Table SimplificationRound Table Simplification

Saw cuts instead of mill finishesSaw cuts instead of mill finishes Chamfers instead of arcsChamfers instead of arcs Rivets or welds instead of screwsRivets or welds instead of screws

WARNING – expect it won’t workWARNING – expect it won’t work

It may need to come apartIt may need to come apart

It is a prototype…It is a prototype…

Review:Review:

ConsensusConsensus

CAD model is completeCAD model is complete

Methods of fasteningMethods of fastening

DFMDFM

Virtual AssemblyVirtual Assembly

Round table simplificationRound table simplification

Manufacturing DocumentsManufacturing Documents

What is the purpose of your product?What is the purpose of your product?• Is it a prototype?Is it a prototype?

Function – will your idea work?Function – will your idea work? Finish – how will it look and feel?Finish – how will it look and feel? Testing new techniques – can I make it this way?Testing new techniques – can I make it this way? Destructive – what is it’s breaking point?Destructive – what is it’s breaking point?

• Final product – One offFinal product – One off

All are major factors in your products manufacture and All are major factors in your products manufacture and influence cost significantlyinfluence cost significantly

Manufacturing documentationManufacturing documentation

What kind of drawings do you need for What kind of drawings do you need for prototyping?prototyping?None:None: You’re making it yourselfYou’re making it yourself

Sketches/Rough Drawings:Sketches/Rough Drawings: – – You’re working with a partner close by that You’re working with a partner close by that

you trust and know – familiaryou trust and know – familiar

Full documentation:Full documentation: You don’t know who is making it?You don’t know who is making it?

SketchesSketches

Manufacturing documentationManufacturing documentation

What kind of drawings do you need for What kind of drawings do you need for production?production?Sketches/Rough Drawings:Sketches/Rough Drawings:

– – You’re working with a partner close by that you trust and know You’re working with a partner close by that you trust and know – familiar– familiar

Full documentation:Full documentation: You don’t know who is making it?You don’t know who is making it? It’s being made overseas or far awayIt’s being made overseas or far away In a place where a different language is spokenIn a place where a different language is spoken

Drawing standards ensure clear communication Drawing standards ensure clear communication around the worldaround the world

Full drawings are time consumingFull drawings are time consuming

DrawingsDrawings

Purpose of drawings:Purpose of drawings:

Convey all information required to get Convey all information required to get what you asked for:what you asked for: PartsParts

ImportantImportant

Estimate the cost of manufacturing the partsEstimate the cost of manufacturing the partsEqually important!Equally important!

Drawings and Drawing PackagesDrawings and Drawing Packages

Assembly DrawingsAssembly Drawings

Sub-Assembly DrawingsSub-Assembly Drawings

Part DrawingsPart Drawings

Support DocumentationSupport Documentation

Assembly Drawings: IncludeAssembly Drawings: Include

At least one view of assemblyAt least one view of assembly

BOMBOM List top level parts only – Sub assemblies, big ticket List top level parts only – Sub assemblies, big ticket

componentscomponents

NotesNotes common detail occurring throughout the entire assemblycommon detail occurring throughout the entire assembly

I.e.: All fasteners to be 416 stainless steelI.e.: All fasteners to be 416 stainless steel

Overall dimensionsOverall dimensions Shows space requirementsShows space requirements

Overall Mass (estimated)Overall Mass (estimated) Shows potential shipping requirements/budgetShows potential shipping requirements/budget

Sub-Assembly Drawings: IncludeSub-Assembly Drawings: Include

At least one view of the Sub AssemblyAt least one view of the Sub AssemblyBOMBOM List all components and sub-assemblies. Including List all components and sub-assemblies. Including

fastenersfasteners

NotesNotes Special assembly instruction or sequence informationSpecial assembly instruction or sequence information All details common throughout sub-assemblyAll details common throughout sub-assembly

All ferrous metal parts must be demagnetized fullyAll ferrous metal parts must be demagnetized fully

Overall dimensions and MassOverall dimensions and Mass Shows space and handling requirementsShows space and handling requirements

Part Drawings: IncludePart Drawings: Include

Part geometryPart geometry GD&TGD&T

Part Drawings: IncludePart Drawings: Include

Part geometryPart geometry GD&TGD&T

Basic tolerances areBasic tolerances are plus / minus plus / minus

the dimension giventhe dimension given

Hole too small + shaft too big (all within basic tolerance) Hole too small + shaft too big (all within basic tolerance) = REWORK = EXTRA COSTS!!!= REWORK = EXTRA COSTS!!!

Tolerances matter!Tolerances matter!

Part Drawings: IncludePart Drawings: Include

Part geometryPart geometry GD&TGD&T

Notes - specific to the partNotes - specific to the part FinishFinish

I.e. All edges to be chamfered 0.01-0.02” unless I.e. All edges to be chamfered 0.01-0.02” unless specifiedspecified

Surface treatmentSurface treatmentI.e. part to be chemically treated with Black Oxide I.e. part to be chemically treated with Black Oxide coatingcoating

Drawing exampleDrawing example

Support Documentation: IncludesSupport Documentation: Includes

Data Sheets – for purchased components. Data Sheets – for purchased components. Available from most component manufacturersAvailable from most component manufacturersSupplier Data – Suggest potential sources for Supplier Data – Suggest potential sources for purchased componentspurchased componentsSet up documentation – for proven techniques and Set up documentation – for proven techniques and processes used in the manufacture of specific processes used in the manufacture of specific components or assembliescomponents or assemblies Not generally seen in prototypingNot generally seen in prototyping

ONLY GIVE PERTINENT INFORMATIONONLY GIVE PERTINENT INFORMATIONNO DUPLICATIONNO DUPLICATION

Presentation of drawing packages:Presentation of drawing packages:

OrderOrder• Main Assembly Drawing with BOMMain Assembly Drawing with BOM• Main Assembly Detail DrawingsMain Assembly Detail Drawings• Sub-Assembly Drawings Sub-Assembly Drawings • Sub-Assembly Detail DrawingsSub-Assembly Detail Drawings• Individual Part Drawings belonging to the sub-Individual Part Drawings belonging to the sub-

assembly – repeat if neededassembly – repeat if needed• Support DocumentationSupport Documentation

Presentation of drawing packages:Presentation of drawing packages:

Continued….Continued….

Ease of access to important informationEase of access to important information Folded so title block is on topFolded so title block is on top

Gives access to part numbers, material type, Gives access to part numbers, material type, quantities, etc.quantities, etc.

Supply contact informationSupply contact informationManufacturer/Estimator may have questions Manufacturer/Estimator may have questions

Working with UMSWorking with UMS

ResourcesResources Materials sourcing – common to Materials sourcing – common to

obscureobscure Outsourcing supportOutsourcing support Standard component catalogue libraryStandard component catalogue library 100+ years in prototyping and technical 100+ years in prototyping and technical

expertiseexpertise

What you need to Work with UMSWhat you need to Work with UMS

Help – The faculty supports UMS to help Help – The faculty supports UMS to help Undergraduate students gain actual Undergraduate students gain actual industry standard experience at no cost to industry standard experience at no cost to youyouAn idea – UMS can provide discrete design An idea – UMS can provide discrete design support support A problem – UMS can provide complete A problem – UMS can provide complete solutions – Not free ~$73.00/hrsolutions – Not free ~$73.00/hrA full design – UMS offers in house A full design – UMS offers in house machining and Fabricatingmachining and Fabricating

What to expect as What to expect as Undergraduate studentsUndergraduate students

Consultation if neededConsultation if neededDesign/Drawing reviewDesign/Drawing reviewWorkshop trainingWorkshop trainingEstimating of project costs with explanation of Estimating of project costs with explanation of where costs are incurredwhere costs are incurredSuggested cost reducing measuresSuggested cost reducing measures

Call come in or e-mail us to set a meetingCall come in or e-mail us to set a meetingugm@uwo.caugm@uwo.ca

UMS CostsUMS Costs

Consulting = No cost to Undergraduate StudentsConsulting = No cost to Undergraduate StudentsBasic Shop Rate = $63.00/hrBasic Shop Rate = $63.00/hr

Technical staffTechnical staffMachine rates: (approximate)Machine rates: (approximate)

CNC Machining Center = $15.00/hr + operator = CNC Machining Center = $15.00/hr + operator = $70/hr - $15/hr if unattended run is possible$70/hr - $15/hr if unattended run is possibleFDM FDM ≈ $40 / cubic inch – very approximate – ≈ $40 / cubic inch – very approximate – always get proper quote – depends on buildalways get proper quote – depends on build

All other equipment is covered under basic shop All other equipment is covered under basic shop raterate

Where is UMS?Where is UMS?

Thompson Engineering Building. Room 50Thompson Engineering Building. Room 50

University of Western OntarioUniversity of Western Ontario

1151 Richmond Street1151 Richmond Street

London Ontario Canada N6A 5B9London Ontario Canada N6A 5B9

Phone (519) 661-4276Phone (519) 661-4276

Fax (519) 661-3066Fax (519) 661-3066

Email: Email: ums@uwo.ca

Resources:Resources:

Resources: Interpreting Engineering Resources: Interpreting Engineering Drawings 3Drawings 3rdrd edition by Jensen & Hines edition by Jensen & Hines

The Free Dictionary – The Free Dictionary – www.thefreedictionary.com

Aiolos Engineering – Toronto Ontario Aiolos Engineering – Toronto Ontario CanadaCanada

www.universitymachineservices.com