MODELING OF DOOR LOWER SUBSTRATE TRIM WITH ATTACHMENT FEATURES FROM CLASS A SURFACE USING CATIA

REPORT

DOOR TRIM

Aim: To create a plastic door trim from the given Class A surface

Methodology: The steps followed are as mentioned below

1. Tooling axis is created
2. Draft analysis is performed
3. Class-B surface is generated
4. Class-C surface is generated
5. A closed solid model is created from the serfaces.

Tooling axis

1. The first step is to ensure that the given surface is a closed surface. This can be fixed by using the join option. For verification use the join tool or the boundary tool.
2. An axis for the tooling direction is decided through visual inspection.
3. The tooling direction in this model will be created paralell to the Y direction. For this a point is inserted at the centre of gravity and a line is created parallel to the X direction through the point.
4. This line will be the tooling axis.

Draft analysis

1. The surface to the analysed is selected and the material options is turned on in the customize option.
2. The feature draft analysis tool is opened.
3. The compass is aligned with the tooling direction.
4. It is made sure that the pulling direction is correct. Otherwise it is flipped from the open toolbar.
5. The surface is selected to make sure that the draft values are in permissible limits on all faces.

Draft analysis of class A surface

Draft analysis of final surface

Views from different orientations

Feature tree