APRC的MTM资料2

TABLE 6: RELEASE ( RL )

It is the basic movement of fingers or hands used to control an object.

The RELEASE cases are the following:

RL1: Normal release executed by the fingers opening.

RL2: Contact release.

TABLE 7: DISENGAGE ( D )

It is the basic manual movement made in order to separate objects, that it is characterized for an involuntary movement occasioned by the sudden termination of the resistance.

The disassemble variables are:

Class of adjustment.

Ease of handling.

Care of handling.

Pressed.

TABLE 8: OCULAR TIME

Eye travel

It is the basic movement that is used in order to change the axis of vision from a place to another.

Eye focus

It is the basic visual-mental time for looking toward an object, during enough time in order to determine easily visible characteristics. If the pieces are reasonably big it could require several ocular focuses.

For practical ends, the ocular focus happens only when the eyes are immobile. The symbol for ocular focus is EF and the time of execution is 7.3 TMU.

TABLE 9: BODY, LEG AND FOOT MOTIONS

Foot movement.

Legs movement.

Bending down.

Kneeling down in a knee.

TABLE 10: SIMULTANEOUS MOTIOS

Simultaneous movements: It happens when two or more movements are executed simultaneously for several members of the body.

Combined movements: It happens when two or more movements are executed simultaneously by the same member of the body.

Any basic movement which it is not carried out with the hands will be recorder by separated.

The TABLE 10 is related with the tables:

Table 1: REACHING

Table 2: MOVING

Table 4: GRASP

(Example: 1C= Grasp with difficulty in the inferior part or by the side for diameters of 0 to 12mm)

Table 5: POSITION

       (Example: 2S= Position with symmetrical pressed)

Table 7: DISENGAGE

       (Example: 1E= Loose Disassemble with easy handling)

PROCEDURE

The employment of the MTM is very simple and the procedure could summarize in the following points:

Determining the basic micro-movements that should be use in the operation to study.

Adding the values from the MTM time table data for each one of  the micro-movements.

Adding the allowance factor CC% of each activity.

The difficult rest in the requirement of knowing and identifying all the basic-necessary micro-movements for each operation.

Example of the use for table 10:

Suppose a GRASP type 1B that arise simultaneously to a Move type A

So: It is an easy activity to carry out and it is executed inside the normal area of vision with a total time in TMU= 3.5+ 3.0= 6.5 TMU

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