time study metodh modapts

7/23/2019 Time Study Metodh Modapts

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MODAPTSModular Arrangement of Predetermined Time Standards

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MODAPTSModular Arrangement of Predetermined Time Standards

Predetermined time systems

Steps

How to be usedClasses of motions

Allowances

Exercises

(From: International MODAPTS Association, Inc. Kalamazoo, MI)


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Predetermined Time Systems

Techniques for studying work methods

Work is divided into micro elements that

are standard in any activity

These micro elements are represented

by symbols.

Note that in MTM system these symbols

are called therbligs.


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Steps

Determine all the symbols in a work

process

Assign standard time values to eachmicro movement

Total up the times to find total time/task

(Assuming additivity and independence)


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How to be used

Determine an efficient work method

Determine the time/unit for an efficient work method

MODAPTS uses modules (MOD) to express units ofhuman physical work (normal time- done by qualified,

thoroughly experienced employee) 1 MOD = .129 sec. 1 sec. = 7.75 MOD

1 MOD = .00215 min. 1 min. = 465 MOD

1 MOD = .000036 hr. 1 hr. = 27933 MOD

(Standard time with no allowances)

MODAPTS codes

Type of activity + Time to complete

M3P2,W5, etc.


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MODAPTS Classes of Motions

Movement

Done by the finger-hand-arm-shoulder trunk

system

Required to position a part of the arm to perform

the Terminal activities

Terminal Activities (GET and PUT)

Done at the end of a movement

In close proximity to the things being worked onAuxiliary Activities

Walking, bending, inspection, deciding, etc.


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Movement

Movements and terminal activities take place in pairs.Movement first then terminal activities Move to get, move to put

Examples: M3GO (move to touch)

Movement activities are classified by: Distance moved

Body part required to perform the move

Light/small objects vs. heavy/large objects Large objects : 16 x 16 x 16

Heavy objects : over 18 lbs.

Award the lowest category that is possible tosuccessfully complete the activity


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Movement (cont.)

Finger

1 MODHand

2 MODs

Forearm

3 MODs

Arm

4 MODsExtended Arm

5 MODs

1

2

6

12

18


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Moves with Small/Light Objects

Type Movement MODs DistancesFinger (M1) Knuckle 1 1

Hand (M2) Wrist 2 2

Forearm (M3) Elbow 3 6Whole Arm

(M4)

Shoulder directly

forward, perhaps body

assistance

4 12

Extended Arm(M5)

Shoulder fully left, right,or across the body 5 18

Trunk (M7) Shoulder involving thebody trunk

7 30

Note: Body assistance means to require the body to bend slightly (simultaneously with Move).It increases distances not time.


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Examples

M1 Movements Rub your thumb and index finger together

Depressing keys M1P0

Squeezing trigger M1P0

M2 Movements Following a body move: 5 x W5, M2G1 Positioning of a washer: M4G3 M2P5

M3 Movements Turning over the page

Draw a free hand line approximately 6 inches long How about half an inch long?

M4 Movements An imaginary 45 degree cone

Move forward 18 (inside the cone)


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Examples (cont.)

M5 Movements Outside imaginary 45 degree cone

Reaching up to an object from a high shelf

M5P2

Moving an object across the body M5P0

M7 Movements

Fully up, down, or across the body (hinged at the

waist) Picking up objects from the floorM7G1 M7P0


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Exercises

Hand moves are typically______inches

Whole arm move forward 15_______

Hand turns a nut down______

Reach to the floor while standing______

Using a pen or pencil perform the following and

provide the correct code:

Carry the object from I-10 to J-10_______

Turn your wrist to view the bottom of the object________

Carry the object to imaginary point H-20_______

Return the object to G-16_______

Carry the object to K-1_______


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Moves with Large/Heavy Objects

WeightLimit

Maximum Distance

For Large Object Only

2 6 12 18 24 35 39

ONE 0-2 lb M2 M3 M4 M5 M7 M7 M7

HAND 2-9 lb M3 M3 M4 M5 M7 M7 M7

9-18 lb M4 M4 M4 M5 M7 M7 M7

TWO 18-35 lb M4 M4 M4 M4 M4 M5 M7

HAND 35-136 lb M7 M7 M7 M7 M7 M7 M7


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Exercises

One hand Move a 14 lb. box 14 ________

Move a 18 lb. box 3 _________

Two hands Move a 100 lb. box 6 _________

Move a 40 lb. box 34 _________

Move a 30 lb. box 10 _________


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Terminal Activities

PUT and GET must be joined to a move

Influenced by:

Muscular control: precision Visual control: eye action

Mental control: mental decision

Low conscious control (G0, G1, P0)

Automatic response

Little muscular control, no visual or mental control

High conscious control (P2, P5, G3)

What is done at the end of move?


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Terminal Activities (cont.)

Type Conscious Control Description

High* Low

G0 X Touch only

G1 X Pick up easy objectP0 X No conscious

G3 X Pick up flat object,or objects in a bin, hard to

pick up object

P2 X Requires one feedback** (information)

P5 X Requires two feedbacks

*Employees are required to follow an activity through the end, using their eyes

**Provided by the employees eyes


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Terminal Activities (cont.)

For each activity below, is it high or low conscious?

Pick up a pencil from an uncluttered desk. ________

Pick up a straight pin from an uncluttered desk. ________

Pick up a match from a matchbox. _______ Put your pencil point exactly on the period at this sentence

end. _________

Put your pencil anywhere on this page. _________


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Simultaneous Activities

Always use an M2 to precede the second highconscious control activity

Left hand -----movement--High control activity at end

Right hand----simo-movement---wait----M2 moveHigh

control activity at endBoth lowconscious control: record the highest totalMOD

One low, one highconscious control: record on the

total high conscious control activity MOD valueBoth highconscious control: sum of MOD valuesfrom both hands


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Example

Left Hand Right Hand Total MODs

1 Independent

Simultaneous

M3P2

M3P2

M3P5

M2P5

13

122 Independent

Simultaneous

M4G3 M4P2

M4G3 M4P2

M4G3 M4P2

M2G3 M2P2

26

22

3 Independent

Simultaneous

M4G1 M4P2

M4G1 M4P2

M4G3 M4P5

M4G3 M2P5

27

25


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GET with Small/Light Objects

G0: Contact get (touching) Counting small change lying on the counter

Depress button- M4G0 M1P0

Push box M4G0 M4P0

G1: Simple grasp get (closing fingers aroundobjects) Pick up raised object M4G1

Grasp drawer handle

G3:Get with feedback (sensory or visualfeedback involved) Pick up small or flat or jumbled object M4G3


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GET with Large/Heavy Objects

G2: One hand engagement Picking up a suitcase

G4: Two hand engagements Unobstructed object, free standing, unimpeded by

others Bend over, grasps an object with two hands and

returns to a standing position- M7G4 M7P0

G8: Three hand engagements Slightly impeded by others One hand- pull the box away, two handspick it

up


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PUT with Small/Light Objects

P0: Simple put (general or indefinite location) Sliding an object against a stop

Picking up a small object and placing it in the other handM4G3 M4P0

Tossing object into boxM3P0

P2: Put with feedback (definite location) Requiring only one feedback form one or more of senses

(usually eyes)

Locate Phillips screwdriver in slotM3P2

P5: Put with feedbacks (exact location) More than one correcting motion, and more than one change

in direction

Putting a screwdriver blade into a slotted screw head- M4P5

Placing nut on bolt- M4P5


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PUT with Large/Heavy Objects

P0: General location (no orderliness) Hand does not touch object again

Place 40 lb. box on table ______

P2: With orderliness Hand do not touch object again

Place 40 lb. box to table edge _____

P5: One new contact (exact location) Using one additional hand engagement once the

object is placed down

Moderately heavy box placed exactly in line withothers


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ExercisesLean over, pick up a carton, and return to a standing positionbefore walking _______

Place a pencil point where two lines cross ______

Begin with hands in the printed area

Pick up a pencil at C-14, put point on F-9 _______

Pick up a pin at C-14, put point on E-10 _______

Pick up a washer at I-9, put in other hand _______

Slide a washer from H-9 off the table into the lap _______

With both hands, slide the ruler up to line F _______

Pick up the pencil near the sharp end with the left hand, from B-4.Pick up the washer with the right hand from B-13. While carrying

these to the print area, put the washer on the pencil. Slide thewasher along to the end of the pencil. ___________

Pick up a washer from B-14 and then one from B-9 with the righthand. Return to rest in the approximate starting position.___________


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Auxiliary Activities

J2: Juggle

Two criteria

The object is already in the control of the operator and better

control is required

All other activity must stop

Place a nut on a screw while there are several nuts in the

palm rolling the nut out from the palm_______

X4:Apply extra force All other motion stops, and then the body braces itself

B17: Bend and arise (if hand goes below the knee)

S30: Sit and stand (up and down movement)

W5: Walk

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