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2015 FIRST World Championship Creo Modeling Challenge #3 - 4 Bar Linkage Mechanism

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2015 FIRST World Championship Creo Modeling Challenge #3 - 4 Bar Linkage Mechanism

Creo Parametric CAD Modeling Challenge

For this third Creo Parametric CAD modeling challenge, you will be creating a full assembly of the 4 bar linkage shown below. You need to know basic Creo Parametric assembly constraints, Kinematic constraints and assembly structure to complete the design. It is a fairly simple model to create, but you will need to master Creo Parametric Pin constraints to make it work correctly.

 

HINTS

  • Create sub-assemblies for the fixed and moving components with equally spaced linkage arm mounts
  • Assemble the fixed sub-assembly first and make sure it is grounded
  • Add all the hardware at the end
  • Set limits for the first control arm to make sure the mechanism does not freely rotate through 360 degrees
  • Use a second set of constraints to connect the moving sub-assembly to the linkage arms
  • Watch a video of the motion

 

4bar_moving_plate.jpg

 

Extra Credit

  1. Create a copy of the linkage arm and try different lengths
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