1 methods-time measurement (mtm) mtm-2 is a system of synthesized mtm data and is the second general...

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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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