l8 - 16.810 16.810 Engineering Design and Rapid Prototyping...

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16.810 16.810 Engineering Design and Rapid Prototyping Engineering Design and Rapid Prototyping Lecture 8 Manufacturing - CAM Instructor(s) Prof. Olivier de Weck January 13, 2005
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Outline ± Introduction to Manufacturing ± Parts Fabrication and Assembly ± Metrics: Quality, Rate, Cost, Flexibility ± Water Jet Cutting ± OMax Introduction ± Computer Aided (Assisted) Manufacturing ± Converting a drawing to CNC Routing Instructions 16.810 2
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Course Concept today 16.810 3
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Course Flow Diagram (2005) 16.810 CAD Introduction Design Optimization CAM Manufacturing Training Hand sketching CAD design Optimization Revise CAD design Assembly Parts Fabrication Problem statement Final Review Test Learning/Review Deliverables (A) Hand Sketch (B) Initial Airfoil (D) Final Design (E) Completed Wing (F) Test Data & (C) Initial Design Structural Tunnel Testing optional (G) CDR Package FEM/Solid Mechanics Xfoil Airfoil Analysis FEM/Xfoil analysis Assembly Cost Estimation Design Intro / Sketch & Wind 4
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Introduction to Manufacturing ± Manufacturing is the physical realization of the previously designed parts ± Metrics to assess the “performance” of mfg ± Quality ± does it meet specifications? ± Rate ± how many units can we produce per unit time? ± Cost ± What is the cost per unit? ± What is the investment cost in machinery & tooling? ± Flexibility ± what else can be make with our equipment? ± How long does it take to reconfigure the plant? 16.810 5
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16.810 6 Field System/product Beginning of Lifecycle -M iss ion - Requirements -Cons tra in ts Customer Stakeholder User Architect Designer System Engineer Conceive Design Implement “process information” “turn information to matter” SRR PDR CDR iterate iterate The Environment The Environment : technological, economic, political, social, nature The Enterprise The Enterprise The System The System creativity architecting trade studies modeling simulation experiments design techniques optimization (MDO) virtual real Manufacturing assembly integration choose create Life Cycle: Conceive, Design, Implement
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Simple Manufacturing Plant 16.810 7 Raw Materials Energy Supplied Parts Labor Money Warehouse PF1 PFn QA1 QAn Parts Buffer Supplier Buffer Assembly Final Inspection i QA = Quality Assurance Finished Goods Sales Scrap Emissions PF = Parts Fabricat on (focus of this lecture)
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Raw Materials Ashby Diagram ± Material Selection ± Strength ± Density ± Cost ± ± Form ± Sheet ± Rods, . .. 1 / R ( /m 3 ) ± 1 ( ) 1 2 3 4 5 6 7 8 9 ± C R C = f ± C R 2/3 C = f ± C R 1/2 C = f 3 N 4 2 O 3 2 1 2 3 4 5 6 7 8 9 0.1 0.1 1.0 10 100 1000 10,000 10 Relative Cost Unit Volume C Mg Strength MPa Engineering Ceramics Engineering Composites Engineering Polymers Guide Lines for Minimum Cost Design Engineering Alloys Porous Ceramics Parallel to Gain Perpendicular to Gain Polymer Foams Elastomers Woods 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 26 100 1000 10,000 = SiC = Si = Al = Sailons = ZrO = W Alloys = CFRP = Ti Alloys = Ni Alloys = KFRP = Cu Alloys = GFRP = Zn Alloys = Mg Alloys = Al Alloys = SS = Steels = MS = Cast Irons = Polymides = Lead Alloys = PTFE = PMMA = Nylons = Epoxies
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This note was uploaded on 11/08/2011 for the course AERO 16.810 taught by Professor Olivierdeweck during the Winter '07 term at MIT.

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l8 - 16.810 16.810 Engineering Design and Rapid Prototyping...

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