Challenge

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

RRanjith S5 Nov 2021

AIM:

To create the tooling axis for the given fan cover model meeting the requirements of the draft angle and perform the draft analysis on the model.

DRAFT ANALYSIS:

The 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 zones on the analyzed element where the deviation from the draft direction at any point,corresponds to specified values.

In the case of plastic injection molded partd it also allows the designer to see if there is enough draft on the part to ensure that it can be correctly grained. I always use the tool with the axis direction method.Put the main axis on the draft direction line with z being parallel to it.Select the tool and select the part body.You may need to reposition the axis again.The results window has 2 options 1 with just 3 colour variants and the other with many varients.They can be edited by double clicking on them to give you the result you desire.The colours show the different draft angle.

CREATION OF TOOLING AXIS:

The given styling surface was importaed into catia and check irregulations by using join,boundary and disassemble option.Using the boundary option of the holes was created and the center point was marked.Then dummy tooling axis was created with the center point in the z-direction.Using the axis system the intersection curves were created over the xz plane and then sides were extended by using point to point line then by using bisecting lines the tooling axis in x direction was created.

Then by using zy plane the intersection curves were created as shown below and the same procedure was followed for creating the tooling axis in the y direction.Bisecting lines were used to get the exact medium from the two sides so that maximum positive draft angle can be achived.Finally by using the bisecting line option the tooling axis were created by selecting the tooling axis x direction and y direction axis.

CONCLUSION:

Hence the tooling axis has been created for the given fan cover model meeting the requirments of the draft angle and performed the draft analysis on the model using CATIA V5.

TREE STRUCTURE: