Areas Of Linkage Synthesis

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Areas Of Linkage Synthesis

• 1. Type Synthesis
• 2. Number Synthesis
• 3. Dimensional Synthesis

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Type Synthesis

• Determine types of mechanisms to achieve design
  goal.
• Convert rotary motion to reciprocating
  translation.

3
Number Synthesis

• Determine the number of links we can use to
  achieve design goal.
• Suppose we wish to design a 1 DOF planar
  mechanism using just pin joints and sliders.

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Number Synthesis Example
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Number Synthesis Results
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Dimensional Synthesis

• 1. Function Generation
• Point, Order, Point-Order
• 2. Path Generation
• With or without prescribed timing
• Point, Order, Point-Order
• 3. Motion Generation
• With or without prescribed timing
• Point, Order, Point-Order

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Function Generation
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Path Motion Generation
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Function Generation
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Linear Relations f-x, y-y
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Linear Relations f-x, y-y
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Function Generation Example
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Function Generation (cont)
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Function Generation (cont)
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Function Generation (cont)
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Function Generation (cont)
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Function Generation (cont)
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Summary
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Example From Text
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Text Example Summary
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Locate Ao, Bo and B
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Find B by Inversion
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Find B by Inversion
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Locate Pin Joint A
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Complete Linkage Design
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Draw a circle through 2 points
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One circle through 2 points
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Many circles through 2 points
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Draw a circle through 3 points
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One circle through 3 points
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Circle construction
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Draw a circle through 4 points
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Draw a circle through 4 points
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One circle through all points
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Motion Generation - 2 position
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2 positions of point A
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Midnormal of A1A2
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Select ground pivot location
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Repeat for second point
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Use alternate point instead
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Motion Generation - 3 position
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Identify moving pivots
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Locate ground pivot for A
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Locate ground pivot for B