工业工程知识系列.ppt

MODAPTSModularArrangementofPredeterminedTimeStandards PredeterminedtimesystemsStepsHowtobeusedClassesofmotionsAllowancesExercises From InternationalMODAPTSAssociation Inc Kalamazoo MI PredeterminedTimeSystems TechniquesforstudyingworkmethodsWorkisdividedintomicroelementsthatarestandardinanyactivityThesemicroelementsarerepresentedbysymbols NotethatinMTMsystemthesesymbolsarecalledtherbligs Steps DetermineallthesymbolsinaworkprocessAssignstandardtimevaluestoeachmicromovementTotalupthetimestofindtotaltime task Assumingadditivityandindependence Howtobeused DetermineanefficientworkmethodDeterminethetime unitforanefficientworkmethodMODAPTSusesmodules MOD toexpressunitsofhumanphysicalwork normal time donebyqualified thoroughlyexperiencedemployee 1MOD 129sec 1sec 7 75MOD1MOD 00215min 1min 465MOD1MOD 000036hr 1hr 27933MOD Standardtimewithnoallowances MODAPTScodesTypeofactivity TimetocompleteM3P2 W5 etc MODAPTSClassesofMotions MovementDonebythefinger hand arm shouldertrunksystemRequiredtopositionapartofthearmtoperformtheTerminalactivitiesTerminalActivities GETandPUT DoneattheendofamovementIncloseproximitytothethingsbeingworkedonAuxiliaryActivitiesWalking bending inspection deciding etc Movement Movementsandterminalactivitiestakeplaceinpairs MovementfirstthenterminalactivitiesMovetoget movetoputExamples M3GO movetotouch Movementactivitiesareclassifiedby DistancemovedBodypartrequiredtoperformthemoveLight smallobjectsvs heavy largeobjectsLargeobjects 16 x16 x16 Heavyobjects over18lbs Awardthelowestcategorythatispossibletosuccessfullycompletetheactivity Movement cont Finger1MOD Hand2MODs Forearm3MODs Arm4MODs ExtendedArm5MODs 1 2 6 12 18 MoveswithSmall LightObjects Note Bodyassistancemeanstorequirethebodytobendslightly simultaneouslywithMove Itincreasesdistancesnottime Examples M1MovementsRubyourthumbandindexfingertogetherDepressingkeys M1P0Squeezingtrigger M1P0M2MovementsFollowingabodymove 5xW5 M2G1Positioningofawasher M4G3M2P5M3MovementsTurningoverthepageDrawafreehandlineapproximately6incheslongHowabouthalfaninchlong M4MovementsAnimaginary45degreeconeMoveforward18 insidethecone Examples cont M5MovementsOutsideimaginary45degreeconeReachinguptoanobjectfromahighshelf M5P2Movinganobjectacrossthebody M5P0M7MovementsFullyup down oracrossthebody hingedatthewaist PickingupobjectsfromthefloorM7G1M7P0 Exercises Handmovesaretypically inchesWholearmmoveforward15 Handturnsanutdown Reachtothefloorwhilestanding Usingapenorpencilperformthefollowingandprovidethecorrectcode CarrytheobjectfromI 10toJ 10 Turnyourwristtoviewthebottomoftheobject CarrytheobjecttoimaginarypointH 20 ReturntheobjecttoG 16 CarrytheobjecttoK 1 MoveswithLarge HeavyObjects Exercises OnehandMovea14lb box14 Movea18lb box3 TwohandsMovea100lb box6 Movea40lb box34 Movea30lb box10 TerminalActivities PUTandGETmustbejoinedtoamoveInfluencedby Muscularcontrol precisionVisualcontrol eyeactionMentalcontrol mentaldecisionLowconsciouscontrol G0 G1 P0 AutomaticresponseLittlemuscularcontrol novisualormentalcontrolHighconsciouscontrol P2 P5 G3 Whatisdoneattheendofmove TerminalActivities cont Employeesarerequiredtofollowanactivitythroughtheend usingtheireyes Providedbytheemployee seyes TerminalActivities cont Foreachactivitybelow isithighorlowconscious Pickupapencilfromanuncluttereddesk Pickupastraightpinfromanuncluttereddesk Pickupamatchfromamatchbox Putyourpencilpointexactlyontheperiodatthissentenceend Putyourpencilanywhereonthispage SimultaneousActivities AlwaysuseanM2toprecedethesecondhighconsciouscontrolactivityLefthand movement HighcontrolactivityatendRighthand simo movement wait M2move HighcontrolactivityatendBothlowconsciouscontrol recordthehighesttotalMODOnelow onehighconsciouscontrol recordonthetotalhighconsciouscontrolactivityMODvalueBothhighconsciouscontrol sumofMODvaluesfrombothhands Example GETwithSmall LightObjects G0 Contactget touching CountingsmallchangelyingonthecounterDepressbutton M4G0M1P0Pushbox M4G0M4P0G1 Simplegraspget closingfingersaroundobjects Pickupraisedobject M4G1GraspdrawerhandleG3 Getwithfeedback sensoryorvisualfeedbackinvolved Pickupsmallorflatorjumbledobject M4G3 GETwithLarge HeavyObjects G2 OnehandengagementPickingupasuitcaseG4 TwohandengagementsUnobstructedobject freestanding unimpededbyothersBendover graspsanobjectwithtwohandsandreturnstoastandingposition M7G4M7P0G8 ThreehandengagementsSlightlyimpededbyothersOnehand pulltheboxaway twohands pickitup PUTwithSmall LightObjects P0 Simpleput generalorindefinitelocation SlidinganobjectagainstastopPickingupasmallobjectandplacingitintheotherhand M4G3M4P0Tossingobjectintobox M3P0P2 Putwithfeedback definitelocation Requiringonlyonefeedbackformoneormoreofsenses usuallyeyes LocatePhillipsscrewdriverinslot M3P2P5 Putwithfeedbacks exactlocation Morethanonecorrectingmotion andmorethanonechangeindirectionPuttingascrewdriverbladeintoaslottedscrewhead M4P5Placingnutonbolt M4P5 PUTwithLarge HeavyObjects P0 Generallocation noorderliness HanddoesnottouchobjectagainPlace40lb boxontable P2 WithorderlinessHanddonottouchobjectagainPlace40lb boxtotableedge P5 Onenewcontact exactlocation UsingoneadditionalhandengagementoncetheobjectisplaceddownModeratelyheavyboxplacedexactlyinlinewithothers Exercises Leanover pickupacarton andreturntoastandingpositionbeforewalking Placeapencilpointwheretwolinescross BeginwithhandsintheprintedareaPickupapencilatC 14 putpointonF 9 PickupapinatC 14 putpointonE 10 PickupawasheratI 9 putinotherhand SlideawasherfromH 9offthetableintothelap Withbothhands slidetheruleruptolineF Pickupthepencilnearthesharpendwith