What is Motion Study?

What is Motion Study?

Motion study involves the analysis of the basic hand, arm, and body movements of workers as they perform work. Work design in... 5:17 PM

Motion study involves the analysis of the basic hand, arm, and body movements of workers as they perform work.

Work design involves the methods and motions used to perform a task.

This design includes 

Ø  The workplace layout and environment

Ø  The tooling and equipment (e.g., work holders, fixtures, hand tools, portable power tools, and machine tools).

Ø  Work design is the design of the work system.

Gilbreth’s Seventeen Therbligs:

1. Transport empty (TE) – reach for an object
2. Grasp (G) – grasp an object
3. Transport loaded (TL) – move an object with hand and arm
4. Hold (H) – hold an object
5. Release load (RL) – release control of an object
6. Use (U) – manipulate a tool
7. Pre-position (PP) – position object for next operation
8. Position (P) – position object in defined location
9. Assemble (A) – join two parts
10. Disassemble (DA) – separate multiple parts that were previously joined
11. Search (Sh) – attempt to find an object using eyes or hand
12. Select (St) – choose among several objects in a group
13. Plan (Pn) – decide on an action
14. Inspect (I) – determine quality of object
15. Unavoidable delay (UD) – waiting due to factors beyond worker control
16. Avoidable delay (AD) – worker waiting
17. Rest (R) – resting to overcome fatigue