Motion study


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Motion study is the science of eliminating wastefulness resulting from using unnecessary; ill-directed and inefficient motion. The aim of motion study is to find and perpetuate the scheme of least waste methods of labour.

Micro motion study provides a valuable technique for making minute analysis of those operations that are short in cycle, contain rapid movements and involve high production over a long period of time.

Micro-motions are also known as ‘Therbligs’.

Examples of Therbligs

 

  1. Search (Sr)
  2. Select (St)
  3. Grasp (G)
  4. Transport empty (TE)
  5. Transport loaded (TL)
  6. Hold (H)
  7. Release load (RL)
  8. Position (P)
  9. Pre-position (PP)
  10. Inspect (I)
  11. Assemble (A)
  12. Disassemble (DA)
  13. Use (U)
  14. Unavoidable delay (UD)
  15. Avoidable delay (AD)
  16. Plan (Pn)
  17. Rest for overcoming fatigue (R)
  18. Find (F)

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