Challenge

Week 9 - Attachment Feature Creation - Challenge 1

SSairam Baswa16 Mar 2021

WEEK 9 ATTACHMENT FEATURE CHALLENGE-1

AIM :

Create the rib for the Centre console coin holder considering the design rules which are given.

PROCEDURE :

TOOLING AXIS :

The tool axis is the parameter which decides whether the tool enters into mould or not as as it denotes the draft clearance angle where a moulded part is easily removed from the mould.

DRAFT ANALYSIS :

No parts can be ejected from the tool if it is having a straight 90 degree profile from its base surface. A small draft angle is provided to each and every area of the component in order to get an easy removal of the component from the tool. Draft analysis technique is used to analyze whether our part model created in cad is manufacturable based on the draft condition applied. Here the part should get easily removed from the panel dies (in case of Sheet metal part) or Mold (in case of plastic).
Here we are providing a direction in which components should eject inorder to get an easy removal of components from the tool. In other words it also lets us know whether the model is having a draft angle and how much is the draft angle from the tool direction.

PROCEDURE FOR CREATING TOOL AXIS :

Firstly we will be given with a class A surface which is looked as a asthetic and a smooth finish which is created with a Alias software workbench which is also known as a free imagination surface.
For that class A surface we need to check a boundaries first to check any unattached faces is present in that surface.
The below is the image of a class A surface which is given as a input.

So next we need to take a dummy tool axis to get a real tool axis.
Next we take inclined lines to the surfaces we assume that draft is required.
Then we intersect the both the lines and the bisecting line will be the tooling axis.
Below is the image of the tooling axis.

In this model as there is a shell feature we need to take the tooling axis normal to base surface.

Insert > Analysis > Draft Analysis
Draft Analysis dialog box with colour scale (with quick analysis mode) appears on the screen. So the first mode option is the quick analysis mode and second is full analysis mode. Here the quick analysis mode is used.
Change the value of green according to the draft angle provided to the part.
To get a clear picture, either we need to adjust the compass by holding the marked region of compass and dragging it towards the opposite direction or by selecting the inverses draft direction option inside the direction of Draft Analysis.
After getting green colour on the component, try to adjust the compass using the knob, and adjust the direction of the compass to get green on the entire top panel region.
Try zoom in and check if each and every region of the panel is showing green, if in some region, red or blue is showing instead of green.
If any errors is present try to adjust the compass direction to optimise the errors.
If any error is unable to change we need to use the side cores for that positions.

So the main aim of this model is to create rib features on the given model with the design rules.

So after creating the surface model from the class A surface that model should be given solid for closed surface.

Then ribs should be created on the model with design rules given.

Part model image is given below :