Week 8 - Challenge 4 - Coin Holder Design

AIM:-

To create the center console Coin Holder plastic component through the given Class-A surface and at the end performing the draft analysis on the model.

OBJECTIVE:-

• To ensure proper tree structure is followed.
• Geometrical sets should have a proper name based on the sketches present inside of them.
• All the sketches should be created under the geometrical set.
• Use of the close surface feature to make a solid body from the surface.
• To publish the tooling axis, class A, B, and C surface.

PROCEDURE:-

First import the class A surface of the center console coin holder model in CATIA V5.Check the connectivity of the class A surface using the boundary option. Ensure that there is no gap between the two surfaces.

TOOLING AXIS:-

• Now we need to create the tooling axis for the center console Coin Holder model. Visually check which direction is better for creating the tooling axis. Now in order to create the tooling axis in the z-direction, first create a reference point on any surface as shown below figure.

• Now using the reference point, create a line normal to the surface. This line will give us the tooling axis.

CLASS B SURFACE:-

• Consider the thickness of the component as 2.5mm. Now we need to create a B surface that will be similar to the A surface at an offset value of 2.5mm.
• In this operation, we are creating a class B surface in 4 different geometrical sets.
• First, we are creating a sidewall. To create this surface, we need to extract the class A surface as shown in the below figure. Once the surface is extracted, untrim it and then extrapolate it by a required value on each side using point continuity. Trim them to form proper walls. Now offset it by 2.5mm.
• Similarly, we need to extract the base, top wall, and outer flange surface of the center console coin holder in different geometrical sets and perform similar operations on it as mentioned above.
• Once all the surfaces are created trim these surfaces to form a class B surface. Give the appropriate fillets to form a class B surface.

CLASS C SURFACE:-

• To create a class C surface, first, extract the boundaries of the class A surface and extract the adjacent surfaces to the boundary as shown in the figure below.
• Now using the sweep option create the surface. To perform this operation, Go to the toolbar > sweep > profile type > line > subtype > with reference surface > guide curve 1 – (select the extracted boundaries) > reference surface – (select the extracted surface) > angle and length as 90 deg and 4mm respectively and click ok.

CLOSED SURFACE:-

• After the creation of class A, class B, and class C surfaces, we need to trim class B and class C surfaces to form a new surface. Then join the trimmed surface with class A surface to form the final required surface.
• Now using the close surface option from part workbench form a solid body from the surface body.

DRAFT ANALYSIS:–

• To perform a draft analysis on the center console coin holder model, first set the view parameters to material mode.
• Then Go to Menu bar > Select insert > Analysis > Feature draft analysis.
• To give the draft direction, use the compass and align Z-axis with the final tooling axis for the center console coin holder model. Once it is properly aligned, lock the draft direction. Select the center console coin holder and it will show us the current draft angle of the model. Set the draft value to 3 deg under the color scale variant and press ok.

CONCLUSION:

• Center console coin holder plastic component using class A surface has been successfully created and draft analysis have also been performed for the same.