Transcription of UNIT 1 SIMPLE MECHANISMS Simple Mechanisms
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5 SIMPLE MECHANISMS UNIT 1 SIMPLE MECHANISMS Structure Introduction Objectives Kinematics of Machines Kinematic Link or an Element Classification of Links Degree of Freedom Kinematic Pairs Different Pairs Types of Lower Pair Higher Pair Wrapping Pair Kinematic Chains Inversions of Kinematic Chain machine Other MECHANISMS Pantograph Straight Line Motion MECHANISMS Automobile Steering Gear Hooks Joint or Universal Coupling Cams Definition Classification of Cams Classification of Followers Terminology of Cam and Follower Mechanical Advantage Summary Key Words Answers to SAQs INTRODUCTION In our daily life, we come across a wide array of machines.
Machines consist of several material bodies, each one of them being called link or kinematic link or an element. It is a resistant body or an assembly of resistant bodies. The deformation, if any, due to application of forces is negligible. If a link is made of several resistant bodies, they should form one unit with no relative motion of parts ...
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