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Mechanisms

Mechanisms. What is a Mechanism?. A mechanism is the part of a machine which contains two or more pieces arranged so that the motion of one compels the motion of the others. Generally used to: Change the direction of movement Change the type of movement Change the speed of movement

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Mechanisms

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  1. Mechanisms

  2. What is a Mechanism? A mechanism is the part of a machine which contains two or more pieces arranged so that the motion of one compels the motion of the others. Generally used to: • Change the direction of movement • Change the type of movement • Change the speed of movement • Change the amount of torque or force available to do work

  3. Mechanism Movement Rotary Oscillating • Linear • Reciprocating

  4. Crank and Slider • Input Movement rotary • Output Movement reciprocating • Slider Moves 1 in. - diameter of crank • Increased Crank increased distance slider moves • Flow of Power not reversible

  5. Where Do You Find a Crank and Slider? • Steam train • Internal combustion engine

  6. Pulley and Belt • Input and Output Shaft parallel • Speed is increased • Torque is decreased • Ratio 1:2.5 • Flow of Power is reversible • Open Belt wheels turn in same direction • Crossed Belt wheels turn in opposite direction

  7. Where Do You Find a Pulley and Belt? • Lawn mower • Car engine BELTS

  8. Image Resources Microsoft, Inc. (2008). Clip Art. Retrieved November 25, 2008, from http://office.microsoft.com/en-us/clipart/default.aspx

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