Week 8 - Challenge 5 - Core & Cavity Design

Aim:

To create a solid, core and cavity from the drawings given and perform Draft Analysis.

Procedure:

• Open the Generative Shape Design from the Start Menu in software.
• Select the open option from the File menu.
• Select the model and click on Open.

Tooling Axis:

• Intersect the model with the plane perpendicular or to an axis system.
• Extend the lines which are perpendicular to the plane.
• 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.

Class B Surface:

Side Walls:

• Extract the side walls with no propagation in extract option.
• Untrim them.
• Extrapolate the walls with point continuity of distance 20mm.
• Trim the walls to get the required shape.
• Offset those trimmed walls with thickness value.

Top & Bottom Surfaces:

• Extract the surfaces 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.

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.

Final model:

• 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 surface.

Draft Analysis:

• Go to the Insert menu and select the Analysis option.
• Select Feature Draft Analysis.
• Select the Material option and select the surface.
• Drag the compass and place on tooling axis.
• Make sure that the top surface is in green colour as draft angle should not exceed 3deg.
• Click on Okay after confirm the model.

Parting Surface:

• Extract the Class A surface boundary lines with boundary option.
• Extrapolate the Class A surface by 15mm.
• Trim the extrapolated surface with Class C & B surfaces respectively.

Core:

• Open the new sketch in XY plane.
• Create a rectangle and constraints it.
• Extrude the sketch on both sides.
• Trim the parting surface with the above surface of the rectangle.
• Fill the open surface with the Fill option.
• Join the filled surface with the trimmed surface.

Cavity:

• Trim the extrude surface with b surface.
• Fill the open surface with the Fill option.
• Join the filled surface with the trimmed surface.
• Now open the Part body.
• Create two bodies separately and create closed surfaces.
• Intersect with the perpendicular plane and unhide the tooling axis.
• Translate the bodies in required directions.

Tree Structure:

Result:

A solid is created from the given drawings and performed the Draft Analysis.

Core and cavity is created for the model.