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Published byAmbrose Kennedy Modified over 8 years ago
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Characterization of manufacturing (Wright, Ch1-2) Technology –Production Technology
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Production Technology Manufacturing Construction "Processing” Service? Other?
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Manufacturing = “systems that transform materials into products in a central location (factory)” (Wright, p.25)
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Manufacturing = “A series of interrelated activities and operations that involve product design, and the planning, producing, materials control, quality assurance, management, and marketing of that product” (Biekert, p.348)
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Manufacturing = “Building and servicing products that are not attached to a site”
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Manufacturing systems Systems approaches List the subsystems of manufacturing
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Modeling manufacturing systems IPO; Universal Systems Model DPUA PTUD Production Technology Cycle (Ritz)
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IPO Input --> Process --> Output Goals Feedback
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DPUA Design Produce Use Assess
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PTUD Procurement Transformation Utilization Disposition
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Procurement (getting) Harvesting Extracting
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Transformation (changing) Separating Combining Conditioning Forming Casting and Molding Finishing Other
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Utilization by industry by end consumer reuse
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Disposition (getting rid of) Reusing Recycling Storage –Air –Land –Water –Space
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"Production Technology Cycle” Materials Formation Extraction Materials Processing (primary) Transformation (secondary) Marketing Servicing Recovery (back to Materials Formation)
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Benefits of Production Technology Economic Growth Employment Meeting consumer wants Creating a diversity of products Product improvement Other
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Drawbacks of Production Technology Material resource depletion Energy Depletion Pollution Short-Life Products Materialism (Throw-away attitudes) Technophobia Other
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The goals of manufacturing Classic, capitalistic: “To increase the profits of the company” “To improve the well-being of humans” (Ritz, p.39) What would be a better goal?
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Major Stages in the Evolution of Production Systems Household (within the home; no surplus) Handicraft (home or shop; surplus) Factory (centralized; mass production) Automated (automated machinery) Cybernetic (totally controlled by computer) [What might the next stage be?]
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Classification Lot size –Individual –Batch –Continuous Specifications –Stock –Custom
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Manufacturing contexts Cultural Industrial/non-industrial Economic Environmental Other
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Manufacturing inputs: People Legal considerations Ethical considerations Labor capabilities
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Manufacturing inputs: Information Product design Product specifications Regulatory information Other
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Other manufacturing inputs Materials Environment Tools and equipment Energy –Environmental considerations –Supply Finance
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Manufacturing support systems Potential demand Storage Transportation Distribution Utilities and services
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Manufacturing support systems Information network Management Timing Legal framework Other
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Manufacturing processes Materials processing review Energy processing review Information processing review Synthesis of processes
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Manufacturing outputs Products Services Energy Information Waste Other
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Impacts of manufacturing Effect on the consumer Culture and society Effect on the worker Environmental impacts Other
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Manufacturing Engineering (ME) Purpose –Responsibilities Coordination –A variety of approaches Personnel –Training
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ME: Principles 1 Precision –Accuracy (stop watch exercise) –Tolerance Contamination Standardization and Interchangeability
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ME: Principles 2 Continuity –Redundancy Synchronization Efficiency Flexibility Experimentation and Testing
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ME: Facility Siting –Transportation –Storage –Legal –Proximity Technical requirements –Utilities and Access Design Implementation
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ME: Quality Assurance Purpose Total quality management Inspection and sampling Statistical process control
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ME: Equipment Tools and Machinery Tooling Materials Handling Safety Testing and Measuring Other
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ME: Common Types of Tooling Jigs & fixtures Patterns & templates Gages Other
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ME: Concepts in Tooling Registration Accumulation of tolerances Effects of wear and fatigue Vectors Chip removal Other
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ME: Tooling Purpose Design Installation Evaluation Maintenance Alternatives
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ME: Materials Handling Engineering Storage Transport Inventory Safety
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ME: Transport Equipment Gravity Fed –Hoppers –Tubes and Rails Pressurized –Pipelines Motorized –Conveyors –Lifts –AGVs
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ME: Inventory Parameters Tracking systems
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ME: Impacts of Manufacturing on Design Design for Manufacture Design for Assembly Rapid Prototyping Near Net Shape Processing Other
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ME: Workstation Design Human Requirements Physical Needs –Anthropometrics and Limitations –Ergonomics –Worker Safety –Special needs Social and Psychological Needs
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ME: Maintenance Engineering Scheduled maintenance Unscheduled maintenance Scheduled upgrades Service contracts
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