chapter-7.ppt
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The document discusses different types of machine tool maintenance. Preventive maintenance aims to predict and address issues before failure and includes running maintenance done during use and shutdown maintenance during non-use. Corrective maintenance occurs after failure, including breakdown maintenance for immediate fixes and shutdown maintenance for overhauls. Preventive maintenance minimizes breakdowns, ensures production and optimal capacity while corrective maintenance risks lost time and profit.
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Maintenance management involves keeping physical plant and equipment in good operating condition to minimize downtime and costs. The objectives of maintenance management are to minimize loss of productive time, repair time and costs, and total maintenance costs while maximizing quality, equipment uptime, and safety. Effective maintenance management includes preventive, predictive, routine, and planned maintenance approaches across civil, mechanical, and electrical systems. Proper control of maintenance involves authorization, scheduling, budgeting, and equipment records. Key considerations for maintenance include determining appropriate staffing and outsourcing levels as well as leveraging computer systems. High quality, reliable equipment can improve productivity if maintenance is considered early in the procurement process.
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Maintenance management involves organized activities to keep production facilities and equipment in optimal working condition at minimum cost. The objectives of maintenance include increasing reliability, ensuring quality, maximizing equipment lifespan, and minimizing costs and interruptions. There are different types of maintenance such as preventive, which involves regular inspection and minor repairs; corrective, which restores failed units; and predictive, which aims to predict and prevent failures. Collecting failure statistics provides information to diagnose issues and improve maintenance policies.
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Maintenance management involves keeping equipment running at high capacity and low cost through a set of organized activities. The objectives of maintenance include efficient use of personnel, maximizing equipment life, reliability, quality, safety and minimizing costs and interruptions. There are various types of maintenance like preventive, corrective, and predictive. Preventive maintenance involves scheduled, running and shutdown maintenance to prevent failures. Corrective maintenance repairs equipment after failure through breakdown or shutdown maintenance. Predictive maintenance predicts failures through condition monitoring.
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The document discusses various aspects of equipment maintenance including:
1. The importance of maintenance in maintaining operational efficiency and reducing breakdowns. Common types of maintenance include planned, corrective, and predictive maintenance.
2. Planned maintenance aims to prevent failures and includes running, scheduled, and shutdown maintenance. Corrective maintenance repairs equipment after failure while predictive maintenance predicts failures.
3. A effective maintenance program involves identifying equipment, scheduling inspections, documenting history, specifying jobs, and incorporating feedback to improve planning. Total productive maintenance strives to increase production through improved maintenance practices.
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Maintenance management involves keeping physical plant and equipment in good operating condition to minimize downtime and costs. The objectives of maintenance management are to minimize loss of productive time, repair time and costs, and total maintenance costs while maximizing quality, equipment uptime, and safety. Effective maintenance management includes preventive, predictive, routine, and planned maintenance approaches across civil, mechanical, and electrical systems. Proper control of maintenance involves authorization, scheduling, budgeting, and equipment records. Key considerations for maintenance include determining appropriate staffing and outsourcing levels as well as leveraging computer systems. High quality, reliable equipment can improve productivity if maintenance is considered early in the procurement process.
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This document discusses different types of maintenance strategies. It defines maintenance as activities carried out to keep equipment in optimal working condition at minimum cost. Breakdown maintenance involves repair only after failure, while preventive maintenance aims to reduce failures through scheduled inspections and repairs. Predictive maintenance uses equipment monitoring and statistical analysis to predict and prevent failures. The strategies discussed range from reactive breakdown repair to proactive preventive and predictive approaches aimed at improving equipment reliability and productivity.
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The document discusses various aspects of equipment maintenance including:
1. The importance of maintenance in maintaining operational efficiency and reducing breakdowns. Common types of maintenance include planned, corrective, and predictive maintenance.
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chapter-7.ppt
- 1. MIME 2230-Workshop Technology Chapter-7-Workshop Maintenance
- 2. Need For Machine Tool Maintenance • To keep the machine tool in proper working condition always • To endure the accuracy • To minimize breakdown • To ensure production without any interruption • To use at the optimum capacity Types of Maintenance Preventive maintenance i)Running Maintenance ii) Shutdown maintenance Corrective Maintenance i)Breakdown Maintenance ii)Shutdown Maintenance
- 3. Preventive maintenance “Prevention is better than cure” Preventive maintenance makes use of human senses like noticing unusual sound or sensitive equipment like pressure and temperature or smoke gauges to predict the problems before equipment fails. i) Running Maintenance: The maintenance work which can be carried out when the machine is in service, like replacing a part before it breaks etc, ii) Shutdown Maintenance: The maintenance work which can be carried out when the machine is not in service. Advantages of Preventive Maintenance: The possibility of major break down is minimized Optimum production efficiency is maintained Life time of machine tools are improved Safety and working conditions are improved Availability of machine tools is ensured. Value of machine tools are maintained Operational accuracy is improved. Limitations of Preventive maintenance: Accurate and reliable prediction techniques are needed Proper plan and maintenance teams are needed
- 4. Corrective maintenance i)Breakdown Maintenance: The maintenance work which is carried out after a fault occur, like when a electric motor does not work, etc. Once the fault is rectified maintenance is carried out only after next fault occurs. Common reasons for equipment breakdown are: Not replacing worn out parts at right time In adequate lubrication or cooling Climatic conditions Improper handling Neglecting unusual sounds Limitations of break down maintenance: Loss of production time May involve accidents and injuries Cannot be adopted for items regulated by safety norms like crane, lifts etc. Involves profit loss ii) Shutdown Maintenance: T The complete overhaul of machines or equipment's after failure has happened.
- 5. References: 1. Hajra choudary, Media promoters and Publishers Pvt. Ltd, 2002.