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David Goodwin Department of Computer Science and Technology University of Bedfordshire October 24, 2012

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  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    CIS009-2, Mechatronics

    Mechanical Fundamentals - Mechanisms

    David Goodwin

    Department of Computer Science and TechnologyUniversity of Bedfordshire

    October 24, 2012

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    Outline

    1 Introduction

    2 Mechanisms

    3 Kinematics

    4 Kinematic chains

    5 Cams

    6 Gear trains

    7 Ratchet and pawl

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    Introduction

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    Mechanisms

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    What is a mechanism?

    A mechanism is a system of mechanical elements arranged totransmit motion from one form to another form.

    Example

    It might, for example, transform: a linear motion into a rotational motion a motion in one direction into a motion in a direction at right angles a linear reciprocating motion into rotary motion,

    as in the internal combustion engine where the reciprocating motion ofthe pistons is converted into rotation of the crank and hence the driveshaft.

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    Composition of a Mechanism

    Mechanisms consist of mechanical elements including linkages,cams, gears, rack-and-pinion, chains, belt drives, etc. Therack-and-pinion can be used to convert a rotational motion to alinear motion. Parallel shaft gears might be used to reduce a shaftspeed. Bevel gears might be used for the transmission of rotarymotion through 90?. A toothed belt or chain drive might be used totransform rotary motion about one axis to motion about another.Cams and linkages can be used to obtain motions which areprescribed to vary in a particular manner.

    . . . Loading. . .

    David Goodwin Mechatronics

    Newtons_cradle_animation_book_2.gif.MP4

    created with SUPER(C).v2012.bld.53

    eRightSoft

    06:33:32

    Newtons_cradle_animation_book_2.mp4Media File (video/mp4)

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    Kinematics

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    Kinematic chains

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    Cams

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    Gear trains

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    Ratchet and pawl

    David Goodwin Mechatronics

  • Mechatronics

    DavidGoodwin

    Introduction

    Mechanisms

    Kinematics

    Kinematicchains

    Cams

    Gear trains

    Ratchet andpawl

    David Goodwin Mechatronics

    IntroductionMechanismsKinematicsKinematic chainsCamsGear trainsRatchet and pawl