Challenge

Week 8 - Challenge 1 - Base Bracket Design

MMohana Gowtham28 Feb 2023

NOTE: I have Attached the Report, Photos and CADpart in the Attachment

Week 8 - Challenge 1 - Base Bracket Design

AIM:

To Create the Base Bracket Plastic component through the given Class-A surface. Create the tooling axis for the given Class-A Surface by meeting the requirements of the draft angle and at the end perform the Draft analysis on the model.

OBJECTIVE:

Tree Structure

Ensure Proper Tree Structure
Geometrical sets should have a proper name based on the sketches present inside of it
All the sketches should be created under the Geometrical set
Use the Close Surface feature to make a solid body from the surface.
Publications: Use the publication option and publish the below
- Tooling Axis
- Class A, B, and C surface

Report

A detailed report should be done explaining the draft analysis and the tooling axis creation.
An explanation should be given on the way of creating the tooling axis, particularly the Bisecting method.

SOFTWARE USED : CATIA

INPUT:

CAD DATA is downloaded and Opened with CATIA. You can open the file here

TOOLING AXIS:

Tooling axis is defined as such all the featres of the part can be manufactured easily. so here we followed the below steps to create the tooling axis.

Create a point in the middle of the circle.
Create a plane at the same circle so that we can take the intersection of the part.
Intersection line with reference to plane is created.

After creating the intersection line. Hide the Class A Surface.
Draw two lines by point to point line creation.
Now create a Bisecting line by taking the two lines drwan as reference.
So this is our tooling axis.

DRAFT ANALYSIS:

Draft is done on the Class A surface.
Change it to material in customise view.
Click the Draft analysis tool and click the surface and align the compass to tooling axis.
3 degree is the clearing angle
So here is photo of cleared (Green) draft

B SURFACE:

B surface is created by using the given Class A surface.
To make it simple. It is done in simple sub parts. Rib 1, Rib 2, Base.
Rib 1 is refered to any one side of Rib.
- Extract the sides of rib.
- Hide the Class A and Untrim the Extracted sides.
- Extrapolate the sides so that all the 3 faces touch eachother.
- Trim the rib as per the Class A
- Offset it to 2.5 mm Downward

Rib 2 is refered to other side of Rib.
- Extract the sides of rib.
- Hide the Class A and Untrim the Extracted sides.
- Extrapolate the sides so that all the 3 faces touch eachother.
- Trim the rib as per the Class A
- Offset it to 2.5 mm Downward

Base is refered to the outer base part and the base that connects both the ribs.
- Extract the outer base part and the base that connects both the ribs.
- Hide the Class A and Untrim the Extracted sides.
- Extrapolate the sides so that all the faces touch eachother.
- Trim the rib as per the Class A
- Offset it to 2.5 mm Downward
- Trim with the Rib 1 and Rib 2.

Fillet should be made now as per the Class A.
Measure the fillets and replicate the fillet on B surface.
As the section is below the original fillet we must add the thickness with the fillet and apply to the Class B.
Give different color to identify the Class B surface easily.

C SURFACE:

The outer edge of the Class A surface is taken as reference boundry.
This includes the two circles also.
Swept command is applied on the boundries created with draft angle of 4 Degree and extended downwards above 2.5mm.

FINAL PART:

So now we have Class A, Class B and Class C surfaces.
We can join the Class A and Class C surface now.
Trim the Joined section with Class B.
Here we form the enclosed section of the part.

DRAFT ANALYSIS:

Draft is done on the Final Part.
Change it to material in customise view.
Click the Draft analysis tool and click the surface and align the compass to tooling axis.
3 degree is the clearing angle.
So here is photo of cleared (Green) draft.