Week 9 - Attachment Feature Creation - Challenge 1

Week 09 Challenge 01 : Coin Holder with Rib Feature

• Rib feature has been created by following the standard design rules for the rib.
• The Standard Design Rules are,
  • Height of the Rib 5 times of the Wall thickness
  • Thickness of the Rib should be 0.4/0.5 times of the Wall thickness.
  • Minimum Draft Angle should be 0.5deg.
  • Thickness of the Rib at top should be greater than 0.75mm
  • Radius of the Rib should be 0.25mm max.
  • Rib Root thickness should be ±30% of the Wall Thickness.
• The followings are the result when we follow the design rule for the 2.5mm wall thick component(Coin Holder)
  • Height = 5t = 5*2.5 = 12.5mm
  • Thickness of the Rib = 0.4t = 0.4*2.5 = 1mm
  • Draft angle = 0.5deg is applied
  • After Draft, Thickness of the Rib at Top = 0.786mm
  • Radius of the Rib = 0.25mm is applied
  • Rib Root thickness = Measured value is 2.686mm. So it statisfied the rule.(If ±30% of the Wall Thickness means the Rib Root Thickness should lies between 1.75 to 3.25)

Images:

• Ribs
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• Rib Model Tree
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• Dimensional Image
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• Isometric View
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• Front View
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• Top View
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• Side View
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