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Motion Study


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Motion Study

Motion Study

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  • 1. Motion Study & Work Design
  • 2. Motion Study & Work Design Evelean William BY Eng . Ahmad Bassiouny
  • 3. Operation Analysis Approach-1
    • Method analysis
      • Eliminate, simplify, or combine operations
    • Design analysis
      • Reduce the number of parts
      • Design for manufacturability and assembly
    • Manufacture sequence
      • Rearranging operations
      • Mechanizing manual operation
  • 4. Operation Analysis Approach-2
    • Set-up and Tools
      • Reduce set-up time: SMED
    • Material Handling
      • Handling equipment
      • Ergonomic principles
    • Lay-out
  • 5.  
  • 6. The Four Principles of Motion Economy
    • 1. Reduce the Number of Motions
      • Eliminate or reduce the number of motions
    • 2 . Perform Motions Simultaneously
      • Design improvements in the methods and tools which allow both hands to be used at the same time
  • 7. The Four Principles (cont’d)
    • 3. Shorten Motion Distances
      • Reduce - walking, reaching, stretching, squatting and turning, etc.
    • 4. Make Motion Easier
      • Work should be smooth and rhythmical, reduce fatigue and promote safety
  • 8. Use of the Human Body
    • Both hands should start and finish the operation at the same time.
    • Reduce idle time for either or both hands
    • Arm motions should be symmetrical
    • Employ curved movements during the operation
    • Employ rhythmical standard operation
    • Ensure a similar focal point for tools, materials, etc.
  • 9. Arrangement of the Work Place
    • Use fixed positions for tooling and parts to allow habits to form easily
    • Use gravity feeding to ensure a common pickup point
    • Position parts, materials and tools to enable sequential use
    • Use ejector systems or drop deliveries, so the operator has minimal effort to pass on parts to the next operation
    • Benches and chairs should be at the correct working height to avoid interrupted motions
    • All equipment should be within the maximum work area
  • 10. Design of Tools and Equipment
    • Eliminate the need to use one hand purely to hold a part
    • Use combination tools
    • Use counterbalances on heavy tooling
    • Ensure handles on tools are designed to use maximum hand contact
    • Place tooling in the most convenient positions
    • Separate part supplies should be used for two operators.
    • Tools should be placed to enable immediate use
    • Provide chutes for access of parts, and components in/out of the workplace
  • 11. 5 S
    • Seiri, Seiton, Seiso, Seiketsu, Shitsuke
    • Sort, Clean, Set in order, Standardize, Progress
    • 5R : Ringkas, Rapih, Resik, Rawat, Rajin
  • 12. Poka Yoke
    • “ Mistake proofing”
    • A manufacturing technique of preventing errors by designing the manufacturing process, equipment, and tools so that an operation literally cannot performed incorrectly
  • 13. Excuses…
    • I like the way I am doing it now.
    • It's too radical a change.
    • I tried it once and didn't like it.
    • It sounds like a production line.
    • It won't work in our office.
    • I think we should look into it further before we act.
    • It won't pay for itself.
    • I know a fellow who tried it.
    • We've always done it this way.