Week 8 - Challenge 4 - Coin Holder Design

Aim- Creation of Center Console Coin holder design and its draft analysis

To create the centre 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 it.
• All the sketches should be created under the geometrical set.
• Use of the close surface features 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 centre console coin holder model in CATIA V5.

Check the connectivity of class A surface using 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 tooling axis.Now in order to create the tooling axis in Z- direction ,first create a reference point on any surface as shown in fig.

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 2.5 mm. Now we need to create a B surface which will be similar to the A surface at an offset value of 2.5 mm.

In this operation we are creating a class B surface in 4 different geometrical sets.

First, we are creating a side wall. To create this surface, we need to extract the class A surface as shown in fig.

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 2.5 mm.

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 operation 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 class B surface.

Class C Surface-

To create a class C surface first extract the boundries of the class A surface and extract the adjacent surfaces to the boundary as shown in the fig below.

Now using the sweep option to create the surface.To perform this operation,Go to the toolbar-sweep-profile type-line-subtype- with reference surface-guide curve1-select the extracted boundries-reference surface-select the extracted surface-angle and length as 90 degree and 4 mm respectively.

Trim surfaces-

After creation of class A, class B and class C surface we need to trim class B and class C surface to form a new surface. Then join the trimmed surface with class A surface to form the final required surface.

Front view

Side view

Top view

Isometric view

Now using the close surface option from part workbench form a solid body from a surface body.

Draft analysis-

To perform draft analysis on the centre console coin holder model, first set the view parameters to material mode.

To give the draft direction use the compass and align Z- axis of it 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.

Class A Surface Draft analysis

Solid body draft analysis

Full mode analysis

Design tree structure

Publication design tree