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Transcript of flexiblemanufacturingsystems-140224234937-phpapp02
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Flexible Manufacturing SystemsRAVI SHERASIYAMECHANICAL ENGINEERG.E.C,BHUJ
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Flexible Manufacturing Systems (FMS)An FMS is a reprogrammable manufacturing system capable of producing a variety of products automatically. Conventional manufacturing systems have been marked by one of two distinct features:The capability of producing a variety of different product types, but at a high cost (e.g., job shops).The capability of producing large volumes of a product at a lower cost, but very inflexible in terms of the product types which can be produced (e.g., transfer lines).An FMS is designed to provide both of these features.
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FMS ComponentsNumerical Control (NC) machine toolsAutomated material handling system (AMHS)Automated guided vehicles (AGV)ConveyorsAutomated storage and retrieval systems (AS/RS)Industrial RobotsControl Software
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Flexible Manufacturing SystemPartsFinishedgoodsLoadUnloadComputercontrolroomTerminalMachineMachineToolsConveyorPallet
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Classification of FMS-related ProblemsStrategic analysis and economic justification, which provides long-range, strategic business plans.Facility design, in which strategic business plans are integrated into a specific facility design to accomplish long-term managerial objectives.Intermediate-range planning, which encompasses decisions related to master production scheduling and deals with a planning horizon from several days to several months in duration.Dynamic operations planning, which is concerned with the dynamic, minute-to-minute operations of FMS.
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FMS ProblemsPart type selection (Askin) - selecting parts that will be produced in the FMS over some relatively long planning horizon.Part selection (Stecke) - from the set of parts that have current production requirements and have been selected for processing in the FMS, select a subset for immediate and simultaneous processing.Machine grouping (Stecke) - partition machines into groups where each machine in a group can perform the same set of operations.Loading (Stecke) - allocate the operations and required tools of the selected part types among the machine groups.Control - provide instructions for, and monitor the equipment in the FMS so that the production goals identified by the above problems are met.
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Information TechnologyManagement information system (MIS)move large amounts of dataDecision support system (DSS)add decision making supportExpert systemrecommend decision based on expert knowledge
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Decision Support SystemManagement Information SystemWhat -if? analysisManagementDecision Support System
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Artificial IntelligenceNeural networksemulate interconnections in brainGenetic algorithmsbased on adaptive capabilities in natureFuzzy logicsimulate human ability to deal with ambiguity
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Advanced CommunicationsElectronic data interchange (EDI)InternetWireless communicationsTeleconferencing & telecommutingBar codingVirtual reality
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Manufacturing TechnologyNumerically controlled (NC) machinescontrolled by punched tapeComputer numerical controlled (CNC)controlled by attached computerDirect numerical control (DNC)several NC machines controlled by single computer
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Automated Material HandlingConveyorsAutomated guided vehicle (AGV)Automated storage & retrieval system (ASRS)
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Flexible Manufacturing Systems (FMS)Programmable machine toolsControlled by common computer networkCombines flexibility with efficiencyReduces setup & queue times
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RoboticsProgrammable manipulatorsFollow specified pathBetter than humans with respect to hostile environmentslong hoursconsistency
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Robot PartsControllerhardware, software, power sourceManipulatorrobot armEnd-effectorhand
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Computer Integrated Manufacturing (CIM) Integration of design, manufacture & delivery via computer technologyCAD - uses software to create & modify designsCAM - uses programmable automation in manufacturingCAE - links functional design to CAD form designCAPP - creates processing instructions for CAMGT- classifies designs to benefit from prior experience
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Components Of CIM
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Adoption Of Technology Technology ReadinessNeed well-designed products & efficient processes Technology DesignKnow what to automate Technology SelectionChoose the right level Technology IntegrationHave a strategy for incremental automation
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