Pengantar CAD

Lab. CAD/CAM/CAE Fakultas Teknik UMS

Pengantar CAD


Definisi CAD• CAD (Computer Aided Design) dapat didefinisikan sebagai

penggunaan sistem komputer untuk membantu kreasi, modifikasi, analisis, atau optimisasi suatu desain.

• Sistem komputer terdiri dari hardware dan software untuk melakukan fungsi khusus desain yang diperlukan.

• Hardware untuk CAD antara lain komputer, display grafis (monitor), keyboard, pointing device (mouse, space ball, tablet/pen, digitizer), plotter/printer, dan komponen periperal lainnya.

• Software CAD adalah program komputer untuk melakukan fungsi komputer grafis dan program aplikasi untuk melakukan fungsi rekayasa.


Siklus Produksi

Customer& market

QualityControl Production Production

Scheduling

ProductConcept

DersignEngineering Drafting

Order newEquipmentAnd tooling

ProcessPlanning


Siklus Produksi dengan CAD/CAM

Customer& market

QualityControl Production Production

Scheduling

ProductConcept

DesignEngineering Drafting

Order newEquipmentAnd tooling

ProcessPlanning

Computer AidedProcess Planning

ComputerAided Design

ComputerAided DraftingAnd Documentation

Computer AidedQuality Control

Computer ControlledRobot, machines, etc.

Computerized scheduling,Material requirement planning,

Shopfloor control


Proses Desain

Evaluation

Presentation

RecognitionOf need

ProblemDefinition

Synthesis

Analysis andOptimization

GeometricModeling

EngineeringAnalysis

Design ReviewAnd Evaluation

AutomatedDrafting/

3D Modeling

Computer Aided Desain


Tujuan penggunaan CAD• Meningkatkan produktifitas perancang.• Meningkatkan kualitas desain.• Memperbaiki komunikasi.• Membuat database untuk manufaktur.

Yang pada akhirnya bertujuan untuk meningkatkan daya saing.


ELECTRONICDRAWING

VIRTUALPRODUCT& PROCESS

KNOWLEDGEWARE

DIGITALMOCKUP

3D DESIGN

Desig

n-Ce

ntric

Evolusi Teknologi CAD/CAM/CAE

Process

-

Centric


Electrical Design

Conceptual Design & Styling

ToolingFabrication

Manufacturing

Digital Mockup

Detailed Design

Design Pre-validation

Process Centric


a

THE BASIC PHILOSOPHY : FRONT-END LOADING

High

Cycle Time

Product Knowledge(as early as possible)

Freedom to Change(as late as possible)

A permanent driver for CATIA development: Front End Loading

Front endLoading

ENGINEERING / MANUFACTURING PROCESSES

Low

Diagram Front end Loading


Jenis-jenis Model

• Model fisik (physical model)• Model bidang datar (drafting)• Model komputer/digital :

- model wireframe- model surface- model solid


Model Wireframe


Model Surface


Model Solid


Dari 2D ke 3D

Mengapa 3D ?


Tahap Disain – Manufaktur : 2 D drafting

Conceptual Design

2D drafting Review &

AnalysisManufacturing

Dari 2D ke 3D


Tahap Disain – Manufaktur : 3D Modeling

Solid Modeling

Rapid Prototyping

Conceptual Design

Review & Analysis

Manufacturing

Dari 2D ke 3D


Keuntungan Model 3D

• Visualisasi & representasi lebih baik• Digital pre-assembly• Rapid prototyping• Analisis lebih cepat• Kesalahan manufaktur dihindari• Menunjang concurent engineering


Kategori CAD / CAM / CAE

High-end

Solutions

Low-endCAD

Mid-rangeCAD

CAD/CAM/CAE yang terintegrasi (satu database)CATIA, Unigraphics, Pro-Engineer, IDEAS, CADSS

Pemodelan 3D Mechanical Desktop, SolidWork, SolidEdge

Gambar 2DAutocad, Microstation, CADKey


Metoda Pembentukan Model Solid

• Constructive Solid Geometry ( CSG )

• Boundary representation ( B-Rep )


Constructive Solid Geometry ( CSG )

UNION INTERSECT SUBSTRACT


Boundary representation ( B-Rep )


Membentuk Model Solid • Extrude

• Revolute

• Thickness/Offset

• Volume/fillextrude

revolute

thickness

Lab. CAD/CAM/CAE Fakultas Teknik UMSMembuat Gambar Membuat Gambar 2D 2D dari 3D Soliddari 3D Solid


Shape Design & StylingMechanical Design Analysis

Equipment & SystemsDigital Mockup

Aplikasi CAD/CAM/CAE

Manufacturing


Styling & Shape Design

Styling

Shape Design


Mechanical Design

Part Design

Drafting

Assembly Design


Mechanical Design

Sheetmetal Design

Structure Design

Mold Tooling Design


Analysis

Part Stuctural Analysis

Assembly Structural Analysis


NC Manufacturing

• Prismatic Machining (2.5 axis)• 3-Axis Surface Machining• Multi-axis Surface Machining• Lathe Machining


Digital Mock-up

• DMU Navigator• DMU Space Analysis• DMU Kinematics• DMU Fitting


Equipment & Systems Engineering

• Electrical System Design• Piping Design• Ducting (HVAC) design• Circuit Board Design• Piping & instrumentation Diagram


CAD/CAM di Industri Otomotif Global

AvtoVAZ - Russia

IsuzuVolvo CarFHI (Subaru) Telco - IndiaMaruti - India

Proton - Malaysia

FSO - Poland

VW (with Audi, Seat, Skoda, Rolls-Royce) DaimlerChrysler (with MCC, Freightliner,.)

Fiat (with Ferrari, Alfa Romeo, ...) Honda PSA (with Peugeot & Citroen) Renault Mitsubishi (incl. CADAM) Hyundai (with Kia, Asia Motors) BMW (with Rover) Daewoo (with Ssangyong)

CATIA, the de-facto Automotive

Industry Standard

Ford (with Mazda, ...)

SDRC

UG II

GM (with Saab, ...)

own developed system

Nissan (incl. SDRC)

Toyota (with Daihatsu)

Suzuki (incl. CATIA)

CAx System usage as core system =more than 50 % of all mech. CAx seatsare the respective CAx System

CATIA


Aerospatiale Boeing Company British Aerospace CASA (Construcciones Aeronauticas) Cessna Aircraft Company Daimler-Benz Aerospace (DASARI) Dassault Aviation Eurocopter Gulfstream Dirgantara Indonesia (IPTN) Korean Air-Line Lockheed Martin Samsung Aerospace Sikorsky Aircraft GECI

Aerospace

Lab. CAD/CAM/CAE Fakultas Teknik UMSAllied Signal BMW AG British Steel Automotive Eng Group Brose Group Christy Industries Chrysler Engineering Cosworth Engineering Courage Creative Automotive Design Ltd Daewoo Dodge Ferrari FIAT Fontana Group Freightliner Goodyear Gruppo Magneti Marelli Hella Manufacturing Ltd Honda I.DE.A SpA Italdesign Keiper Recaro

Lear Seating Co. Leyland Product Design Magna Interior Systems Mayflower Vehicle Systems Mercedes Benz MichelinMitsubishiMotor Panels for Aston Martin Oshkosh Truck Pininfarina Plymouth Prowler Red Bull-Sauber-Ford Renault Automotive Rover Scania CV AB SEAT Skoda Turkish Mercedes Benz Company Valeo Valmet, car VAZ ("Lada") Volkswagen Volvo

AutomotiveDaimler-Chrysler Indonesia Kramayudha Tiga BerlianAstra Honda MotorsNew Armada


Railway Europe• Adtranz

• Alsthom

• Auxiliar Ferrocarriles

• Bombardier Transportation Japan• Kawasaki H.I.

• Fuji H.I.

• Aruna Sharyou

• Toukyu Sharyou

Korea• Daewoo H.I.

• Hanjin H.I.

• Hyundai Pres. Instr.

• Goninan, Australia

• INKA, Indonesia


Black and Decker, US Household Products Gp Electrolux Cookers Federal Cartridge Co. Flymo Ltd Frigidaire Homelite I.DE.A SpA International Jensen Inco. L'Oreal Peavey Electronics Pfaltzgraff Plastic Technology Center (Lexmark) SamsoniteSanyoSonyNational Gobel Indonesia

Electronic &Consumer Goods


Goninan Grumman Corporation Grundfos Pumps Corporations Kawasaki Heavy Industry Klippon (Weidmuller) P and H Mining Equipment Pico Wisne Smith Meters Stadco Valmet Paper

INKASemen Gresik

PAL-GEKomatsu

ABB Zamech Elblag Black and Decker US Inc. Braun Medical Canon Cebrig Claas COMAU Gruppo Ermetek Electric Boat Corporation GEC Alsthom Transporte Goodyear Tire and Rubber Co.

Fabrication & Assembly


Plant /Ship

ABB Flakt Industri ABABB PowerABB Power OyABB Zamech ElblagASG AccessoriesATNI

BlamenginElektrovod BratislavaHwa Seung GroupISC Consulting EngineerMAERSKMeyer WerftTechnipVSZ Engineering PT. PAL Indonesia


UNIVERSITIES UNI Stuttgart TU Berlin TH Darmstadt UNI Kaiserslautern ITUV Berlin MIT, Boston - USA Lehigh University, USA Stanford University, USA NTN University, Norway NUS, Singapore

UMS, Solo ITS, Surabaya Politeknik Negeri Bandung Bina Nusantara, Jakarta Politeknik Bina Niaga, Bogor ATMI, Solo Universitas Trisakti, Jakarta

and many more ………..


Lembar Evaluasi 1. Jelaskan bagaimana CAD dapat membantu proses design !2. Apa yang dimaksud dengan ‘process centric’ ?3. Jelaskan keuntungan menggunakan model 3D dibandingkan 2D !4. Jelaskan perbedaan metoda CSG dan dan B-Rep dalam

pembentukan model solid !5. Sebutkan jenis-jenis CAD berdasarkan kategorinya dan jelaskan

masing-masing perbedaannya !

Documents

Pengantar CAD