Challenge

Week 10 - Challenge 1- Attachment Feature Creation (Ribs & Screw Boss)

AIM

   To Create the Screw boss for the Drill Handle considering the design rules. 

DESIGN RULES GIVEN 

  •   Draft  - 0.5 degrees on the walls of boss
  •   Thickness -  Typically 40%* of the nominal wall at the base.
  •   Height to Diameter Ratio -  3:1
  •   Radii - 0.25mm maximum radii.  

PROCEDURE

  • Create B Surface for given A surface
  • Offset the A surface and Extract surface and extrapolate the surface
  • And Trim the surface.After edge fillet to be followed
  • Create C surface by using A SURFACE
  • Create Boundary and sweep the boundary with Reference of class A surface
  • Join the CLASS A & CLASS C SURFACE
  • Finally Trim the CLASS B & CLASS A&C JOIN
  • Create Ribs and screw boss
  • create a sketch and extrude the sketch and thickening the surface
  • And Union Trim the Main body
  • create Sketch and draw circle and pad that inner and outer circle
  • Extrude the circle and ASSEMBLE MAIN BODY
  • Before that need to give draft for all body
  • Finally Edge fillet to be use in sharp corners
  • Draft Analysis to be followed in CLASS A , FINAL OUTPUT

GUIDELINES

RIB DESIGN

  • Draft angle - 0.5 degree
  • Thickness  - 0.4 * t
  • Height - 5 * t 
  • Spacing
  • Thickness at Top -0.75mm
  • Optional Radius - 0.75 mm
  • Design suggessions

SCREW BOSS DESIGN

  • Draft
  • Thickness
  • Height of Dia ratio
  • Optional radius
  • Boss gussets
  • Carryout bottom
  • Planning a head of type of rejection

TREE STRUCTURE

CONSTRUCTION ELEMENTS

PART BODY

PUBLICATIONS

DRAFT ANALYSIS

CLASS A

FINAL BODY

VIEWS

ISOMETRIC VIEW

FRONT VIEW

SIDE VIEW

TOP VIEW

BOTTOM VIEW

RESULT

   Thus  the Screw boss for the Door  Handle considering the design rules to be completed with Final part Draft analysis.

NOTE

IN GIVEN QUESTION attachment is not visible. So, many times page to be refreshed.

IN screw boss diameter value taken from help video coin holder screw boss.

Kindly give me a corrections. I will Ensure further.

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