Week 8 - Challenge 4 - Coin Holder Design

Coin holder design

Aim: Create the coin holder Plastic component through the given class-A surface.

Objective:

• To Design Coin holder as per the OEM standard.
• Create Class-B and Class-C.
• Convert the surface into the solid body and provide the thickness of 2.5mm.
• Performing draft analysis to verify the creation of tooling axis and Class-C surface.

Class-A surface:

Design methodology with images:

Procedure for creating tooling axis

• Intersect the model with the plane perpendicular to the axis system.
• Extend the lines which are perpendicular to the planes.
• Again, intersect the model with another plane and extend the lines perpendicular to it.
• Create a Bisecting line by bisecting option in line definition.
• Rename it as tooling axis.

Procedure for creating Class-B surface:

Side walls:

• Extract the side walls with no propagation.
• Untrim them.
• Extrapolate the walls with point continuity.
• Trim the walls to get the required shape.
• Offset those trimmed walls with thickness value.

Top and Bottom surfaces:

• Extract the surface separately and untrim them.
• Extrapolate the surfaces with required distances.
• Offset them with thickness value.
• Trim them for required shape.
• Measure the Fillets, calculate it and create fillets.

Procedure for creating class-C surface:

• Get the boundary lines of class-A surface separately.
• Smooth the curves with a smooth option as boundary lines have a lot of vertices.
• Sweep the curves with tooling axis as direction in sweep option.
• As both lines do not intersect, extrapolate them with a certain distance.
• Trim the surfaces.

Procedure for creating smooth body.

• Join the class A and Class c surfaces.
• Trim those joined surfaces with class-B surfaces.
• Go to part design and insert a body.
• Create a closed body.

Procedure for creating Draft analysis:

• Go to the insert menu and select the analysis option.
• Select the feature draft analysis.
• Select the material option and select the surface.
• Drag the compass and place on tooling axis.
• Make sure the top surface is in green color as Draft angle should not exceed 3 Deg.
• Click on Okay After confirm the model.

For Class-A surface

For the Final component:

Isometric view:

Front View:

Back view:

Side view:

Top view:

Bottom view:

Tree structure:

Conclusion:

• The class-B and class-C surfaces are successfully created from the given class-A surface.
• The class-A, Class-B, Class-C surfaces are joined together to create a final close surface of the component.
• The solid body is successfully created using the closed surface.
• The draft analysis is successfully completed.