Week 8 - Challenge 1 - Draft Analysis on a Fan Cover
Model views:
Feature tree:
Draft analysis color panel:
Draft analysis on fan cover Report:
Introduction:
In this project we conduct a Draft analysis on the provided Class A surface of a Fan Cover in Catia V5.
Draft Analysis:
The Draft analysis is used to check the manufacturability of the given part. The analysis provides crucial data regarding the draft angle given to the part, i.e. if the angle satisfies the standard draft angle required on products for ease of manufacture during operations like injection molding.
The Draft angle is measured along the tooling axis. This angle allows the manufactured part to be released from its mold with ease and without friction/grinding against the mold surface. The standard draft angle usually provided is between 3-5 degrees.
Tooling Axis:
The tooling axis provides the direction in which the part is to be produced. The tooling axis is determined by taking into account the various features on the product such as holes, embosses, flanges, tapers etc.
The method to determining a tooling axis is by taking an intersection between the surface and a selected direction. The intersection creates a 2D section of the part. Then after determining the crucial features, we take a bisecting line between the selected feature section lines. This gives the tooling direction along the selected plane. Thus, repeating the process in other directions, we get two tooling direction lines and taking a bisector between these direction lines provides us with the tooling axis of the part.
Tooling axis of fan cover:
- X Tooling Direction:
For the x direction, we took an intersection of the surface with the x-z plane. This provided with the intersection lines which were used to get the tooling direction by bisecting method.
- Y tooling Direction:
- For the y direction, we took an intersection of the surface with the y-z plane. This provided with the intersection lines which were used to get the tooling direction by bisecting method.
- Tooling axis:
After getting the x and y tooling directions, we take a bisector between these x and y lines to get the tooling axis for the fan cover.
Draft analysis on the fan Cover:
For the analysis, we input the tooling direction by placing the compass on the tooling axis and then selecting the part. The color gradient panel provides information about the draft angle based on the colors, with green colour being user defined while the red and blue colors are kept as 0 and negative respectively or else the user can define their own parameters for these colors.
Below are the images of the fan cover analysis with the draft angle kept at 3 degrees.
