Week 8 - Challenge 4 - Coin Holder Design

AIM - Create the Coin Holder Plastic component through the given Class-A surface

Given Class-A Surface

• Ensure there is no gap between the surfaces.
• Apply Boundary on the surface and Smooth Curve.

Creation of Tooling Axis :-

It is the axis through which opening/closing of Core and Cavity takes place . During choosing the Tooling direction, we have to ensure that the surface should be visible in most possible ways ie; most faces should be clear.

• Extract the Base surface

• Create a Point on the surface and apply Axis system.

• Make the Intersection in YZ plane.

• Since the Intersection line is at angle=0 degree, It means the surface is flat surface or 90 degree surface.
• so, Create Normal line through this point for Tooling Axis.

Creation of Class-B Surface :-

Side Walls

• Extract the surfaces

• Untrim this surface and then Extrapolate to increase the length of surface.

• Trim the extrapolated surfaces .
• Offset=2.5mm for making the surface thickness.

(Extract - Untrim - Extrapolate - Offset - Trim)

• Now, Unhide Class-C Surface.
• Measure the edge angle and apply Edge Fillet on the trimmed surface.

• Edge fillet radius = measured angle of A_surface + 2.5mm . It is the outside walls having offset for thickness is 2.5mm.

Base

• from class-A surafce, Extract - Untrim - Extrapolate - Offset

• again Extract the surface - Untrim - Extrapolate - Offset - Trim

• Trim this surface with above Base surface.

Top Wall

• Use Multiple Extract - Extrapolate - Offset=2.5mm

Initial Trim

• Trim the Base surface and Side Wall surface.

• Trim this surface with Top wall

Outer Flange

• Multiple Extract the surfaces.

• Extrapolate the curved surface.

• It is showing Error while Extrapolate the other surface.

• so, Extract indivisually above and lower surface.
• Untrim surface and then use Extrapolate.

• Join the surfaces

• again Extrapolate surface and use Trim operation.

• Trim this surface with Initial Top Trim surface

(we get the B-Surface but we have to apply fillets as Class-A surface.)

• after using Edge Fillet , we get the final Class-B Surface .

Creating Class-C Surface :-

Open the Intersection in Class-A,B surfaces. we have two line - Blue intersection = Class-A surface , Orange = Class-B surface . Both lines are open; So we have to close this line to get the Class-C surface.

• Multiple Extract the Class-A surface

• use Sweep command.

(This is Class-C surface)

• Join Class-C and Class-A surafce.

Hole Portion

• Multiple EXtract then use Sweep command

• Trim this surface with Class-A,B joined surface.

(This is Final Class-C Surface)

Solid Surface

• Try to create a Boundary on the final class-C surface.

• It is showing Error that means our surface is ready to make the solid body.
• goto Mechanical Design - Part Design .
• Apply Close Surface tool

Draft Analysis :-

To perform Draft Analysis on the Coin Holder component, We have to change our view to Material Mode.

• goto Menu - Insert - Analysis - Feature Draft Analysis
• Unhide main Tooling Axis

• Initiate Draft Analysis
• Allign the axis in our main Tooling Axis by using Compass .
• Apply Draft Angle = 3degree.

• For other other Blue surface(above) which is not clear, We can crosscheck by applying Another dummy axis for clearance.

• Lock the Current orientation for getting proper Draft Analysis.

Different View :-

Normal View

Front View & Back View

Top View

Side View

Isometric View