Week 8 - Challenge 1 - Draft Analysis on a Fan Cover

FAN COVER

1. AIM :

To create the Fan cover plastic component through the given Class-A Surface by using CATIA.

CLASS A SURFACE :

The class a surface is an initial process to bring the plastic component design from scratch to mass production. The class a surface it has no thickness. The Class A surface is used for the aesthetic surface of a product. From Class A surface the solid model is created.

Procedure for Class A:

• The initial step is to import the CATIA file from the sketch designer.
• After importing the file the first step is to ensure that the Class A surface is connected. It can be ensured in two methods.

1. By using the join command
2. By using boundary command.

Fig 1.1 Boundary check-up

B. TOOLING AXIS :

The tooling axis is a direction to open the mold open or close or the cavity and the core to open and close. The tooling axis is used to create the draft analysis. Most of the designers will choose the hole in the surface or the flat surface to choose as a tooling axis point. The choosing plane in the tooling axis point main criteria is to clear all the faces on the surface. The tooling axis is to create because the parallel faces in the surface which make trouble in the drafting to avoid the intersecting lines have been creating.

PROCEDURE FOR TOOLING AXIS :

The first step in the tooling axis is to whether the hole or the flat surface is to choose for the tooling axis.

In the part, the holes are in there to create axis points. So we have to make it a hole part.

After choosing the flat surface the X, Y, Z which direction meet all the faces have to check.

In this part, the Z direction gives all the faces of the diagram.

Fig 1.2 Tooling Axis

DRAFTING ANALYSIS

Drafting analysis is used to make the product in taper or minimum angle to avoid the damage of the product. when the product is on a flat surface it may make wear and tear and to avoid friction shrink and use for the ease ejection.

PROCEDURE

• From the tool command, the analysis it has to choose then the draft analysis is to be done.
• The draft analysis dialog box will display on the screen
• The first step is to use the compass and lock the compass in the tooling axis which we created.
• Then use the lock icon to lock the compass
• Then with the help of the running point check the angle of the component is below r above 3 deg.

Fig 1.3 Draft Analysis

Tree Structure :

Result :

The fan cover is achieved on the basis of mold processing standards.