IG A10 Simple Manufacturing Plant PF≡ Parts Fabricati Raw materials Warehouse focus of this lecture) QA Quality assurance PF1 PFn Energy OA1 QAn Scrap . Emissions Supplied parts SupplierParts Buffer Buffer abor Assembly Money Finished Inspection Goods 16.810(16682) Massachusetts Institute of techno ology it
16.810 (16.682) 6 Simple Manufacturing Plant Warehouse PF1 … PFn QA1 … QAn Parts Buffer Supplier Buffer Assembly Final Inspection Finished Goods PF = Parts Fabrication (focus of this lecture) QA = Quality Assurance Raw Materials Energy Supplied Parts Labor Money Sales Scrap Emissions
IG a10 Raw Materials Material Selection Strength Density Refer to Ashby M F. Materials Selection in Mechanical Design, Oxford; Boston Cost Butterworth-Heinemann 1999 Form Sheet Rods,… 16.810(16682) Massachusetts institute of technol ology it
16.810 (16.682) 7 Raw Materials Material Selection Strength Density Cost … Form Sheet Rods, ... Refer to Ashby, M.F., Materials Selection in Mechanical Design, Oxford; Boston: Butterworth-Heinemann, 1999
IG a10 Parts Manufacturing example: deck components Rⅰbbed- bulkheads decks a Approximate dimensions 250mm x 350mm x 30mm Wall thickness 2,54m Fundamental Parts Fabrication Techniques Machining -e. g. milling, laser and waterjet cutting Forming-eg deep drawing forging stamping Casting-fll die with liquid material, let cool Injection Molding-mainly polymers Layup-e.g. Pre-preg composite manufacturing Sintering-form parts starting from metal powder 16.810(16682) Massachusetts Institute of techn
16.810 (16.682) 8 Parts Manufacturing example: deck components Ribbed-bulkheads Approximate dimensions 250mm x 350mm x 30mm Wall thickness = 2.54mm decks Fundamental Parts Fabrication Techniques Machining – e.g. milling, laser and waterjet cutting ... Forming – e.g. deep drawing, forging, stamping Casting - fill die with liquid material, let cool Injection Molding - mainly polymers Layup – e.g. Pre-preg composite manufacturing Sintering - form parts starting from metal powder
IGAln Metal Cutting/Removal Techniques New Techniques Laser Cutting Turning on a lathe Milling Planing (mainly for sheet metal) Waterjet Cutting Slotting Drilling Reaming Countersinking Reaming Grinding 16.810(16682) Massachusetts Institute of Technology
16.810 (16.682) 9 Metal Cutting/Removal Techniques Turning on a lathe Milling Planing Drilling Countersinking Slotting Grinding Reaming New Techniques: Laser Cutting (mainly for sheet metal) Waterjet Cutting Reaming
IG A1n Quality: Engineering Tolerances Tolerance -the total amount by which a specified dimension is permitted to vary (ansi y14.5M) a Every component ply within spec adds to the yield(n y 16.810(16682) Massachusetts Institute of techn 10
16.810 (16.682) 10 Quality: Engineering Tolerances Tolerance --The total amount by which a specified dimension is permitted to vary (ANSI Y14.5M) Every component within spec adds to the yield (Y) q p(q) L U Y y p(y)