Methods time measurement (MTM) document

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 m

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

4

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

8

10