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Methods time measurement (mtm)
 

Methods time measurement (mtm)

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    Methods time measurement (mtm) Methods time measurement (mtm) Presentation Transcript

    • Methods-Time Measurement (MTM)
      • MTM-2 is a system of synthesized MTM data and is the second general level of MTM data
        • Consist 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 actions
        • Special situations:
          • Principle of simultaneous motions
          • Principle of limiting motions
          • Principle of combined motions
    • MTM-2 System
    • MTM-2 simultaneous hand motion allowances MTM-2 classes of actions MTM-2 System
    • Methods-Time Measurement (MTM)
      • MTM-3
        • Save time at the expense of some accuracy: ±5%,95%
        • Not use for operations: eye focus, eye travel time
        • 4 categories of manual motions: handle, transport, step and foot motions, bend and arise
      • MTM-V
        • Use in metal cutting operations
        • To establish setup time for all typical machine tools
      • MTM-C
        • Use in baking and insurance industries,2-level system
        • To establish time standards for clerical-related works
    • Methods-Time Measurement (MTM)
      • MTM-M: Use for evaluating operator work using a stereoscopic microscope
      • Other specialized MTM systems
        • MTM-TE: electronic test, 3-level
        • MTM-MEK: electronic test, 3-level, small-lot
        • MTM-UAS: describe process, determine allowed times for batch production, 3-level system
      • MTM systems comparison
        • Criteria: accuracy, number of therbligs utilized, time to analyze a job (at 90% confidence level)
        • MTM-2 is the best
    • 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 air
        • Controlled move: object remains contact with surface or attached to another objects during the movement
        • Tool use: use of common hand tools
      • Two adaptations: Mini and Maxi MOST
        • Mini MOST: identical, short-cycle operations
        • Maxi MOST: long-cycle operations
      • Both manual and computerized versions