Challenge

Week 9 - Attachment Feature Creation (Ribs & Screw Boss) - Challenge 1

Week 9 - Attachment Feature Creation (Ribs & Screw Boss) - Challenge 1

OBJECTIVE

To create and Develop Class B and Class C surfaces along with proper Tooling axis from the Given Class A surface
To create and Assemble of Ribs and Screw Boss to the complete part body of Door Handle.
Draft analyse the both class A and completed part body of door handle.

Screenshot of Class surface of Door Handle

Tooling Axis

To Extract the bottom/Flat surface and create a point on the surface
then add axis system, on the reference point and intersect along the YZ axis
In the intersection lines ,create two lines and Create bisecting line from these two lines
And consider as Tooling Axis

Screenshot of Tooling Axis

Draft Analysis of Class A Surface

Class B Creation

Extract all the face of surface from the Class A surface Except Fillets
Then Extracted surfaces all untrim and Extrapolate the surface wheather intersect to other surface
Afterthat Trim all the surfaces and offset to 2.5mm distance to inward direction,Because component thickness is 2.5mm
then fillet all edges with measure of class A surface and also consider thickness of component
If fillet is inward minus the thickness value to the fillet value get from class A surface
If fillet is outward adding the thickness to the fillet value

Screenshot of Class B surface

Class C creation

From the Class A surface, selects boundary and sweep
In sweep,With reference surface select boundary as a guided curve and ref.surface is Class A surface at 90 degree with distance of 5mm
then some curving edges are inproper surface, so resolve those surface by using Multisolid surface command
then extrapolate corner edges were not intersect to eachother and trim the excess edges
After Using Join command join all the sweep surfaces is consider as a Class C surface

Screenshot of Class C surface

Final Component Creation

Screenshot of Final Door handle surface

Change to Part body By using Closing Surface and Door handle solid component is completed

Ribs Creation

Create Positioned sketch on the surface and draw a two lines and iso constraint
Extrude those Lines at 5t Of thickness of the component at 5*2.5 is 12.5mm
Then thicken 0.4t of thickness of the component, 0.4*2.5 is 1mm of ribs thickness
Draft angle is 0.5 degree at pulling direction of Tooling axis and neutral element is base of the ribs
then Edge fillet is 0.25mm