Challenge

Week 9 - Attachment Feature Creation - Challenge 1

Automotive Plastic Design using CATIA V5

AIM: To Create the rib for the Centre console coin holder considering the design rules mentioned in the video.

PROCEDURE:

First,Import the CAD part body or geometry to the Catia V5 designing software to work on the ribs.
Publish the input using publication option for the comfort of user.

To create the ribs first we need to create a Tooling axis for the model.
So for that, first create a new geometrical set and after that create a surface from the model by using extract command and then create a point by using point in surface option.
After a point is created,using that point create a axis system(make sure it is not in current).
Intersect the model in x axis by using intersection option and taking the intersection as refetence draw two lines and then create a bisecting line for those two lines using the point as a reference.
Do the same along y axis also and create a bisecting line on the same point.
Now, again create a bisecting line for this two lines which we have got along the same point along the point.
Finally we will have the tooling axis for the model , do some graphical change like increasing the thickness and color and publish the tooling axis so that the user can use it faster according to his comfort.

Now, we need to create ribs, for that first create a geometrical set and name it as RIB DESIGN.
Using the axis system we nned to create a sketch as in which a line is drawn.

Use the line and extrude the line along the tooling axis direction.
The main important point we need to keep in mind is that the height of the rib should be defined now.
The hight for the rib is given as (5* the thickness of the component). So in this model the thickness of the compound is 2.5(5*2.5=12.5).

After the height is determined.We have to create a body and using Thickness option we have to give the thickness for the ribs.
The thickness also have a relation (0.4*the thickness of the model),so thickness of rib is given as 1mm. (0.4*2.5=1mm).

Then we have to use the assembly option to combine the rin and the body.
Now, using fillet option give the fillets to all the edges of the ribs.The mim radii is 0.25 for ribs.
Finally one rib is created.

Now, we have to do the same process to create other rib. But the gap between the ribs should alsom be defined with a condition i.e., hight/width ration should be 3:1 for steel and 2:1 is preffered.(i tool it as 2:1).

Finally we have to check the rib root thickness to confirm weather the rib whic is designed is correct or not.
For that we need to create a circle using Tritangent.
Befor that first intersect the model. then use the tritangent in circles and extract the curves by right clicking and selecting create extract option . Finally the circle will be created
The diameter of the circle should be almos the same or more to the thickness .than the rib which is designed is proper.