Week 8 - Challenge 6 - Core & Cavity Design

AIM:Create the Core and cavity blocks for the switch bezel designed in the earlier challenge.

PROCEDURE:
Part I
* Import the .STEP file into CATIA V5.
* fit the object to screen. Save the file into CATPART
*Open the file save it.

*use varnier tool to check the flat surfaces.

CREATING TOOLING AXIS
*By changing orientation and select a axis at which maximum part is visible.

*choose a surface and use point [•]

point >on surface >select a Surface >'0'

Choose line [/]

line point-direction select points Select axis

* The created line is the tooling axis Publish it.

Part II:


Offset → select the Class A Surface

*Click on the other side, so we obtain the.offset of A surface of 3mm which is considered as class B

*Fillet all the edges of required dimension

*class B surface is ready - Publish it

Part III:

* Make surface A visible and make boundary limit as required.

Sweep-> Using boundary and surface>90>and give okay

Now Join the Surface A &C.

*Use extrapolate . and completely check there is no open boundaries

*C surface is created and Join A+c and publish it

*Make the b surface visible and just extrapolate the extra edges

*Trim the extra surfaces and the required part of 3 mm thickness is created

*Go to Part Modelling Close surface → fill
* So the surface model is converted into part model.
Draft Analysis is made on both sides "3"

Challenges:

During offsetting the untrim or Extrapolated region,the wrong surface is created and it's difficult to sort out on which side the offset must be.
Trimming the excess area, affects the original surface.

Learning:

Tools such as
Untrim
Fill
Sweep
Extrapolate
Tooling axis
Draft Analysis

Conclusion
The required CORE AND CAVITY is designed meeting the requirement of 2.5 mm and the draft was analysed