Pengertian Umum Sistem ManufakturD0394 Perancangan Sistem ManufakturPertemuan I IIhttp://www.google.com/url?sa=t&rct=j&q=pengertian%20cam%20dalam%20manufaktur&source=web&cd=2&cad=rja&ved=0CDgQFjAB&url=http%3A%2F%2Frepository.binus.ac.id%2Fcontent%2FD0394%2FD039459489.ppt&ei=zLEwUabrEoOyrAekrYHIDg&usg=AFQjCNGLRggjD3pAk36PFfM3M7BJQ9ND9w&bvm=bv.43148975,d.bmk

Definisi ManufakturManufacturing Suatu kumpulan operasi dan aktifitas yang berkorelasi untuk menghasilkan produk, seperti perancangan produk, pemilihan bahan baku, perencanaan, pemrosesan, inspeksi, dan manajemen. Manufacturing process Aktifitas manufaktur merubah bentuk suatu produk dengan mesin-mesin seperti, milling, drilling dll. Assembly Kumpulan dari semua proses dengan mana bermacam komponen dan sub perakitan dibentuk bersamaan untuk membentuk rancangan rakitan atau produk secara geometris secara lengkap.Manufacturing System Suatu pengorganisasian beberapa proses manufaktur dan perakitan yang saling berinteraksi. Tujuannya adalah untuk menjembatani dengan diluar fungsi produksi berkenaan dengan mengoptimasikan produktifitas kinerja sistem.

Manufacturing Historical PerspectiveEnglish system (1800s)Memperkenalkan mesin-mesin yang digunakan secara umum yang dapat digunakan untuk produk yang bervariasi. American system (1850s)Menekankan pada presisi dan kemampuan untuk saling bertukar proses. Berubah dari best fit fokus kepada greatest clearance without loss of functionality.Scientific management (1900s)Prespecified worker motions - Moved the control totally into the hands of management.Process improvement (SPC) (1950s)Identical procedures produce different results on same machine at different times. Emphasized outliers instead of mean performance.

Manufacturing Historical PerspectiveNumerical control (1970s)Combining the versatility of general purpose machines with the precision and control of special-purpose machines.Computer integrated manufacturing (1980s)Pervasive use of computers to design products, plan production, control operations, and perform various business-related functions.Agile Manufacturing / Mass Customization (1990s)Creation of highly flexible organizational structures that allow systems to produce highly customized product

Manufacturing SystemCharacterized by:Number of machinesNumber of part typesPart routes through the systemProcessing timesMachine setupsDemand patternsRaw material/component availabilityEquipment layout/configurationOperator availability

Manufacturing SystemInterested in:Lead time for productsCost of processingDecisions include:System configurationScheduling methods

Manufacturing System ConfigurationsJob ShopProcess layout that groups functionally similar machinesFlow LineProduct layout that groups machines based on a products flowCellular Manufacturing SystemHybrid layout that groups similar parts and the corresponding processing machinesFlexible Manufacturing System is an automated applicationProject ShopProduct is fixed and people and equipment brought to itContinuous Process

Manufacturing System ConfigurationsJob Shop ConfigurationFlow Line Configurations

Manufacturing System ConfigurationsCellular Configuration

Product Volume vs. Product VarietyVolumeVarietyContinuousFlow Line / Transfer LineCellular / Flexible Mfg. Sys.Job Shop

Manufacturing System DesignManufacturing System DesignResource RequirementBuffer CapacityMaterial FlowResource Lay Out

Manufacturing System OperationOperation Decomposition PlanningDeciding what to doSchedulingDeciding when to do what you plannedExecutionCarrying out the planned tasks according to the scheduleHierarchical System StructureShopWorkstationEquipment

Principles of Manufacturing SystemsLittles LawWIP = Production Rate Throughput Time (L=W)Matter is conservedLarger scope implies reduced reliabilityObjects decayExponential growth in complexityM components, N states ==> NM possible system states

Principles of Manufacturing SystemsTechnology advancesSystem components appear to behave randomlyLimits of (Human) rationalityCombining, simplifying, and eliminating save time, money, and energy

Manufacturing Systems OverviewProduct DesignProcess PlanningProduction System DesignProduction PlanningOperational PlanningShop Floor ControlExecution

Product DesignIdeaUnderstanding and identifyingcustomer needsInitial DesignFeasibility study to determine initial functionalityPrototypeMarket ResearchMarket potential, economic analysis, strategic assessmentDesign RefinementFunctional specificationsDetailed SpecificationsDetailed design considering functions, quality/reliability, manufacturing, etc.

Product Design (Cont.)Functional analysisCustomer specificationsProduct reliabilityDesign for XManufacture or AssemblySimplification, standardization, modularizationTestingRepairRobustness to variationsConcurrent engineeringConsider how product will be manufactured (process and production planning) during design phaseReduce cost and time to market

Product Design (Cont.)Computer-Aided DesignUse of computer graphics to assist in the creation, modification, and analysis of a designCommon usesGeometric modelingAutomated drafting and documentation Engineering analysisDesign analysisCAD/CAMGeneration of manufacturing instructions directly from CAD design data

Product Life CycleProduct (Consumer) PerspectiveInceptionDesignProductionUseMaintenance and repairDisposalReuse, recycle, scrapProduction System (Manufacturer) PerspectiveDesignRamp-upMaturityDecline

Time

Production System Life CycleLifecycleInceptionDesignConstructionStartupUseClosureRelationship to product lifecycleTypically production system lifecycle is longer than an individual products lifecycleProduction system will revert to earlier stages in its lifecycle when new products are introducedExtent and cost depends on system flexibility

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