120 Production Systems

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<p>PRODUCTION SYSTEMS</p> <p>DEFINITION</p> <p>MANUFACTURING PROCESSApplication of physical and chemical process to alter the geometry properties and/or appearance of a given started material to make parts or products. This definition includes assembly process.PRODUCTION SYSTEMA production system is a collection of people, equipment and procedures organized to perform the manufacturing operations of a company.MANUFACTURING SYSTEMA manufacturing system is a collection of integrated equipment designed for some special mission, such as machining a defined part family or assembling certain product. Include people.LEVELS IN PRODUCTION SYSTEM</p> <p> Facilities Manufacturing support systems</p> <p>FACILITIES</p> <p> Factory Production machines Tooling Material handling equipment Inspection equipment Computer system Plant layout</p> <p>MANUFACTURING SUPPORT SYSTEMS</p> <p>Procedures or process needed to manage the production operationsInvolve a cycle of information processing </p> <p>Figure 1.3Functions:1. Business functions communication with the customer Marketing Forecasting Order entry Cost accounting Customer billing2. Product design Research and development Design engineering Prototype shop3. Manufacturing planning Process planning. Operation sequence Master scheduling Planning. MPS. Listing of product to be make Material Requirement planning. MRP. Raw material and purchasing parts. Capacity resource planning. CRP </p> <p>4. Manufacturing control Shop floor control Inventory control Quality control</p> <p>MANUFACTURING SYSTEM CATEGORIESIn terms of human participation in the process,1. Manual work systemOne or more workers performing one or more tasks with the aid of hand tools.Hand tools: Is a small tool that is manually operated by the strength and skill of the human user.</p> <p>2. Worker-machine systemA human worker operates powered equipment</p> <p>3. Automated systemThe process is performed by a machine without the direct participation of a human workerRequirement: Program of instructions and control system</p> <p>AUTOMATIZATION IN PRODUCTION SYSTEMS</p> <p>1- Automation of manufacturing system2- Computerization of manufacturing support systems</p> <p>Automated Manufacturing System</p> <p>The process is performed by a machine without the direct participation of a human workerBasic types:1- Programmable automation2- Flexible automation3- Fixed automation</p> <p>Programmable automation</p> <p>The equipment are designed with the capability to change the sequence of operation to accommodate different product configuration Features:1- High investment in general purpose equipment2- batch production3- Low production rates4- Certain flexibility to change product configurationExampleCNC machine tools with manual part charge lost time</p> <p>Flexible automation</p> <p>Is an extension of programmable automation. 1- High investment in custom-engineered equipment2- Continuous production of variable mixture product3- Medium production rates4- Flexibility to deal with product design variation. Virtually no time lost for changeover ExampleMachining operation with automated part charge </p> <p>Fixed automation</p> <p>System in which the sequence of processing operation is fixed by the equipment configuration1- High initial investment for custom-engineered equipment2- High production rates3- Relative inflexibility of the equipment to accommodate product varietyExampleMachining lines transfersAutomated assembly machines assembly lines</p> <p>Figure 1.5</p> <p>AUTOMATION PRINCIPLES AND STRATEGIES</p> <p>USA Principles</p> <p>1- Understand the existing process2- Simplify de process3- Automated the process</p> <p>Strategies</p> <p>1- Specialization de operation2- Combined operations3- Simultaneous operation4- Integration of operation 5- Increase of flexibility6- Improve material handling and storage7- On line inspection8- Process control and optimization9- Plant operation control10- Computer integrated manufacturing (CIM)</p> <p>MIGRATION</p> <p>1- Manual production2- Automated production3- Automated integrated production</p>


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