Reciprocating Saw (Sawzall)

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Reciprocating Saw(Sawzall)
By Jackie Ho

• Objectives
• Introduce different types of motion
• Explain the mechanism used in the reciprocating
  saw

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Types of Motion

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How do reciprocating saws cut?

• Reciprocating saws convert rotary motion into
  reciprocating motion

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ANSWER!!!
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Slider-Crank Mechanism

• a four-bar linkage with 3 revolute joints and one
  prismatic joint

Example Engine
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Other Mechanisms

• Other ways convert rotary motion to reciprocating
  motion
• Cardan Gear
• Geared Mechanism

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The slider-crank mechanism transforms the rotary
motion of the motor to reciprocating motion of
the blade
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References

• http//www.engr.utexas.edu/dteach/Experience/mecha
  nisms/brief_mechanisms.htm
• http//www.cs.cmu.edu/People/rapidproto/mechanisms
  /chpt5.html
• http//www.flying-pig.co.uk/mechanisms/pages/carda
  n.html