Principles of Motion Economy

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Principles of Motion Economy

  1. 1. PRINCIPLES OF MOTION ECONOMY PREPARED BYJJOSEPH GEORGE KONNULLY
  2. 2. SUBDIVISIONS OF PRINCIPLES OF MOTION ECONOMY Principles of motion economy will be presented under the following three subdivisions: 1) Principles of motion economy as related to the human body. 2) Principles of motion economy as related to the arrangement of the place. 3) Principles of motion economy as related to the design of tools and equipment.
  3. 3. PRINCIPLES OF MOTION ECONOMY RELATED TO USE OF HUMAN BODYPrinciple of m otion economy as related to t he u se of t he human body.1 . T he two hands should begin as well as complete t heir m otions at t he same t ime.2. T he two hands should not be idle at t he same t ime except du ring rest period.3. Motions of t he arms should be m ade in opposite and symmetrical directions and should be m ade simultaneously.4. Hand and body motions should be confined to the lowest classification with which it is possible to per form the work sat isfactorily. General Classification o f Hand Motions a. Finger m otions. b. Motions involving fingers and wrist. c. Motions involving fingers, wrist, and forearm. d. Motions involving fingers, wrist, forearm, and u pper arm. e. Motions involving fingers, wrist, forearm, u pper arm and shoulder.
  4. 4. PRINCIPLES OF MOTIOM ECONOMY RELATED TO USE OF HUMAN BODY5. Momentum should be employed to assist the worker wherever possible, and it should be reduced to a minimum if it must be overcome by muscular effort.6. Smooth continuous cur ved motions of the hands are preferable to straight line motion involving sudden and sharp changes in direction.7. Ballistic movements are faster, easier, and more accurate than restricted (fixation) or “controlled” movements.8. Work should be arranged to permit an easy and natural rhythm wherever possible.9. Eye fixations should be as few as close together as possible. - Eye Movements - Eye – Hand Coordination
  5. 5. EXAMPLE ON USE OF HUMAN BODY USING MOTION PICTURE FILM Print of motion picture film showing eye and hand motions of the operator assembling small parts.
  6. 6. PRINCIPLES OF MOTION ECONOMY ON USE OF HUMAN BODY - EXAMPLE
  7. 7. PRINCIPLES OF MOTION ECONOMY ON USE OF HUMAN BODY - EXAMPLE
  8. 8. PUNCH PRESS EYE FIXATION EXAMPLE
  9. 9. PUNCH PRESS EYE FIXATION EXAMPLE
  10. 10. PUNCH PRESS EYE FIXATION EXAMPLE
  11. 11. PRINCIPLES RELATED TO ARRANGEMENT OF WORKPLACE Principle of motion economy as related to the work place.1 . There should be a definite and fixed place for all tools and materials.2. Tools, materials, and controls should be located close to the point of use. - Normal working area - Maximum working area
  12. 12. PRINCIPLES RELATED TO ARRANGEMENT OFWORKPLACE- NORMAL/MAXIMUM WORKING AREA
  13. 13. DIMENSIONS OF WORKING AREAS IN 2 DIMENSIONS - MALE
  14. 14. DIMENSIONS OF WORKING AREAS IN 2 DIMENSIONS -FEMALE
  15. 15. WORKING SPACE AREAS – 3DIMENSIONS
  16. 16. PRINCIPLES OF MOTION ECONOMY RELATED TO ARRANGEMENT OF WORKPLACE -EXAMPLE
  17. 17. PRINCIPLES OF MOTION ECONOMY RELATED TO ARRANGEMENT OF WORKPLACE
  18. 18. BOLT AND WASHERS ASSLY
  19. 19. BOLT AND WASHER ASSEMBLY (OLD METHOD) A - Special rubber washer B – Flat steel washer C – Lock washer D – 3/8 x 1 inch bolt Containers with bolts, lock washers, steel washers, and rubber washers arrange on the top of the bench.
  20. 20. BOLT AND WASHER ASSLY- IMPROVED METHOD
  21. 21. PRINCIPLES OF MOTION ECONOMY RELATED TO ARRANGEMENT OF WORKPLACE
  22. 22. PRINCIPLES OF MOTION ECONOMY RELATED TO ARRANGEMENT OF WORKPLACE
  23. 23. PRINCIPLES OF MOTION ECONOMY RELATED TO ARRANGEMENT OF WORKPLACE7. The height of the work place and the chair should preferably by arranged so that alternate sitting and standing at work are easily possible . Sitting-standing work place Sitting-standing work place for males. for females.
  24. 24. PRINCIPLES OF MOTION ECONOMY RELATED TO ARRANGEMENT OF WORKPLACE8. A chair of the type and height to permit good posture should be provided for every worker.Sitting work place for males. Sitting work place for females.
  25. 25. PRINCIPLES OF MOTION ECONOMY RELATED TO DESIGN OF TOOLS AND EQUIPMENT
  26. 26. PRINCIPLE OF MOTION ECONOMY RELATED TO DESIGN OF EQUIPMENT-EXAMPLE
  27. 27. PRINCIPLE OF MOTION ECONOMY RELATED TO DESIGN OF EQUIPMENT - EXAMPLE
  28. 28. PRINCIPLE OF MOTION ECONOMY RELATED TO DESIGN OF EQUIPMENT - EXAMPLE
  29. 29. PRINCIPLES OF MOTION ECONOMY RELATED TO DESIGN OF TOOLS AND EQUIPMENT
  30. 30. PRINCIPLES OF MOTION ECONOMY RELATED TO DESIGN OF EQUIPMENT AND TOOLS

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