6、Introduction to Mechanisms

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1、MechanismMachinesaremechanicaldevicesusedtoaccomplishwork.Amechanismisaheartofamachine.Itisthemechanicalportionofthemachinethathasthefunctionoftransferringmotionandforcesfromapowersourcetoanoutput.Mechanismisasystemofrigidelements(linkages)arrangedandconnectedtotransmitmotioninapre

2、determinedfashion.Mechanismconsistsoflinkagesandjoints.KenYoussefiMechanicalEngineeringDept.1ExampleofMechanismCancrusherSimplepressRear-windowwiperKenYoussefiMechanicalEngineeringDept.2ExampleofMechanismsMovespackagesfromanassemblybenchtoaconveyorMicrowavecarriertoassistLiftplatfo

3、rmpeopleonwheelchairKenYoussefiMechanicalEngineeringDept.3ExampleofMechanismsLiftplatformFrontloaderDevicetoclosethetopflapofboxesKenYoussefiMechanicalEngineeringDept.4ExampleofMechanismsRowingtypeexercisemachineConceptualdesignforanexercisemachineKenYoussefiMechanicalEngineeringDe

4、pt.5ExampleofMechanismsExtensionpositionFlexedpositionSix-barlinkageprosthetickneemechanismKenYoussefiMechanicalEngineeringDept.6Four-BarLinkageKenYoussefiMechanicalEngineeringDept.7Four-BarLinkageCategoriesKenYoussefiMechanicalEngineeringDept.8Four-BarLinkageCategoriesKenYoussefiM

5、echanicalEngineeringDept.94-BarmechanismsKenYoussefiMechanicalEngineeringDept.104-BarmechanismsS+l>p+q4doublerockermechanismsKenYoussefiMechanicalEngineeringDept.11TheSlider-CrankMechanismKenYoussefiMechanicalEngineeringDept.12TheSlider-CrankMechanismKenYoussefiMechanicalEngineerin

6、gDept.13Slider-CrankMechanism-InversionKenYoussefiMechanicalEngineeringDept.14MechanismCategoriesFunctionGenerationMechanismsAfunctiongeneratorisalinkageinwhichtherelativemotionbetweenlinksconnectedtothegroundisofinterest.Afour-barhandactuatedwheelchairbrakemechanismKenYoussefiMech

7、anicalEngineeringDept.15MechanismCategoriesFunctionGenerationMechanismsAfour-bardrivelinkageforalawnsprinklerKenYoussefiMechanicalEngineeringDept.16MechanismCategoriesMotionGenerationMechanismsInmotiongeneration,theentiremotionofthecouplerlinkisofinterest(rigidbodyguidance).NewRoll

8、erbladebrakesystemKenYouss