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1、MODAPTSModular Arrangement of Predetermined Time Standards,Predetermined time systems Steps How to be used Classes of motions Allowances Exercises (From: International MODAPTS Association, Inc. Kalamazoo, MI),Predetermined Time Systems,Techniques for studying work methods Work is divided into micro
2、elements that are standard in any activity These micro elements are represented by symbols. Note that in MTM system these symbols are called therbligs.,Steps,Determine all the symbols in a work process Assign standard time values to each micro movement Total up the times to find total time/task (Ass
3、uming additivity and independence),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 of human physical work (“normal” time- done by qualified, thoroughly experienced employee) 1 MOD = .129 sec. 1 sec. =
4、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.,MODAPTS Classes of Motions,Movement Done by the finger-hand-arm-shoulder trunk system Required to position a part of
5、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 on Auxiliary Activities Walking, bending, inspection, deciding, etc.,Movement,Movements and terminal activities take place in pairs. Movement first
6、 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 cat
7、egory that is possible to successfully complete the activity,Movement (cont.),Finger 1 MOD,Hand 2 MODs,Forearm 3 MODs,Arm 4 MODs,Extended Arm 5 MODs,1”,2”,6”,12”,18”,Moves with Small/Light Objects,Note: Body assistance means to require the body to bend slightly (simultaneously with Move). It increas
8、es distances not time.,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 H
9、ow about half an inch long? M4 Movements An imaginary 45 degree cone Move forward 18” (inside the cone),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
10、 (hinged at the waist) Picking up objects from the floor M7G1 M7P0,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
11、-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_,Moves with Large/Heavy Objects,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
12、” _ Move a 30 lb. box 10” _,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 c
13、onscious control (P2, P5, G3),What is done at the end of move?,Terminal Activities (cont.),*Employees are required to follow an activity through the end, using their eyes *Provided by the employees eyes,Terminal Activities (cont.),For each activity below, is it high or low conscious? Pick up a penci
14、l 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. _,Simultaneous Activities,Always use an M2 to precede the second high conscio
15、us control activity Left hand -movement-High control activity at end Right hand-simo-movement-wait-M2 moveHigh control activity at end Both low conscious control: record the highest total MOD One low , one high conscious control: record on the total high conscious control activity MOD value Both hig
16、h conscious control: sum of MOD values from both hands,Example,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 around objects) Pick up raised object M4G1 Grasp drawer handle G3:Get with feedback (sensory
