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

Draft Analysis on a Fan Cover

draft angle -

A draft angel is a that is applied to each side of the most features of an injection molded part

The Angle, which is positioned to run toward the direction of a mold's pull and parting line, helps with releasing the part from the mold

draft analysis -

Draft analysis command enables you to detect if the part you drafted will be easily removed

This type of analysis is performed based on color ranges identifying xones on the analyzed element where the deivation from the draft direction at any point corresponds to specified values

tooling axis -

The defination tab on the tool as dialog controls how you want the tool to orient itself whilst cutting a multi-axis toolpath total as select to define the tool orientation

The default value is vertical which is used for standard 3-Axis machining an be fund larger continuously changing orientation

PROCEDURE :

To import the given class-A surface model in this case Fan cover Model in CATIA

Test the boundries in the model

first create a dummy axis in the Z-direction by creating a center point using hole as reference in the Point tool

In order to create a tooling axis clearing the direction first which needs to create a Axis system at the center point

Now using the inetersect option on the toolbar, select the ZX plane iof the Axis system as the first element and fan cover or class-A surface as the secont element

Now create lines representing the walls of the fan cover using point to point in the line coommand as shown below figure

Using the 2 lines, create a tooling axis clearing the X-direction

Create a line that bisects these two lines from the reference point in the Z-direction. This will create a tooling axis clearing X-direction

Again using intersect option select YZ plane in the Axis sytem which will give outer lines of the model in the Y-directtion

Same as before create two lines from the points on the side lines of the sketch using point to point in line command

Similarly create a tooling axis clearing Y-direction using same bisecting method as before

Now create the final tooling axis in the Z-direction for class-A surface using bisecting taking both X and Y direction clearing axis as reference in the line command as shown below

To perform draft analysis on the model:- Go to menu bar > select insert > Analysis > Feature Draft Analysis

To give the draft direction, use the compass and align Z-axis of it with the tooling axis Once it properly aligned, lock the draft direction

A red point shown ion the screen, select class-A surfaceand it will show us the current of the model

Then go to diaplay tab on draft analysis and select the first option under it Colour scale and it will show the draft value

Set the Draft value to 3 deg under the colour scale variant and press ok

features tree image -

part model image -