Methods-Time Measurement (MTM)
Transcript of Methods-Time Measurement (MTM)
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Methods-Time Measurement (MTM)•MTM-2 is a system of synthesized MTM data and is the
second general level of MTM dataConsist of
•Single basic MTM motions
•Combinations of basic MTM motions
Applications•Work cycle >1’
• The cycle is not highly repetitive
• manual not complex or simultaneous hand motions
Classifications: 11 classes of actionsSpecial situations :
•Principle of simultaneous motions
•Principle of limiting motions
•Principle of combined motions
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MTM-2 System
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MTM-2 simultaneous hand motion allowances
MTM-2 classes of actions
MTM-2 System
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Methods-Time Measurement (MTM)•MTM-3
Save time at the expense of some accuracy: ±5%,95%Not use for operations: eye focus, eye travel time4 categories of manual motions: handle, transport,
step and foot motions, bend and arise
•MTM-VUse in metal cutting operationsTo establish setup time for all typical machine tools
MTM-CUse in baking and insurance industries,2-level systemTo establish time standards for clerical-related works
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Methods-Time Measurement (MTM)•MTM-M: Use for evaluating operator work using
a stereoscopic microscope•Other specialized MTM systems
MTM-TE: electronic test, 3-levelMTM-MEK: electronic test, 3-level, small-lot MTM-UAS: describe process, determine allowed
times for batch production, 3-level system
•MTM systems comparisonCriteria: accuracy, number of therbligs utilized, time
to analyze a job (at 90% confidence level)MTM-2 is the best
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Maynard Operation Sequence Technique (MOST)
•A simplified system: fast establish time standards
•MOST identifies 3 basic sequence models:General move: free object movement through the airControlled move: object remains contact with surface
or attached to another objects during the movementTool use: use of common hand tools
•Two adaptations: Mini and Maxi MOSTMini MOST: identical, short-cycle operationsMaxi MOST: long-cycle operations
Both manual and computerized versions
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