Transcription of UNIT 1 SIMPLE MECHANISMS Simple Mechanisms
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UNIT 1 SIMPLE MECHANISMS Simple Mechanisms
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. It can be a sewing machine, a cycle or a motor car. Power is produced by the engine which makes use of a mechanism called slider crank mechanism. It converts reciprocating motion of a piston into rotary motion of the crank. The power of the engine is transmitted to the wheels with the help of different MECHANISMS .
It converts reciprocating motion of a piston into rotary ... compressors, etc. One mechanism makes possible to complete idle stroke in machine tool in lesser time than cutting stroke which reduces machining time. This mechanism being termed as quick return mechanism. Similarly, there are some mechanisms which can provide rocking motion which ...
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