Week 8 - Challenge 2 - Base Bracket Design

Base Bracket

Class A surface:

It is the visible aesthetic surface which have curvature and tangency alignment to ideal aesthetical reflection quality of any automotive component

Class A surface refers to those surfaces which are visible It is a required where aesthetics has a significant contribution.

Class B surface:

It is a surface which is offset below a certain thickness from the class A surface

All the features of the product are to be performed on the class B surface with respect to class A surface

Class C surface:

class c surface is the surface which is used to join both the Class A and Class B

This surface connects both A and B surfaces along the Tooling Axis

It contains the draft as per the design

It is basically the thickened surface between both A and B surface

PROCEDURE:

First ensure the class-A surface is properly joined and no discontinuity on it

For this we can ckeck by boundary command or join command

Analysis the model manually or visually to see which direction is most suitable for tooling axis

create the tooling axis for &check which direction is better for creating tooling axis

First create a dummy tooling axis in Z direction

the line 1 is dummy tool axis

Now create the YZ plane at the centre point of the hole

Now using the intersect option, select the YZ plane as first element and base bracket as second

This will give a 2D sketch of fan cover viewing from Y-direction

Now create lines through the walls of a base bracket using point to point option with the help of intersect 1 where you think the tooling might create problem

And using these 2 lines create a bisecting line from reference point in Z direction

This will form a main tooling axis in Z direction

draft analysis and use compass for draft direction and select the tooling axis

The green colour in this analysis shows that our model is passed in the analysis and also indicated the drafting angle 3deg

After that we have to create class B surface for that to extract the different surfaces of class A

then we have to untrim it and then we have to extrapolate the surface

then using the trim tool we have to trim extrapolated surface to get required design

Now offset the obtained trim for the thickness of 2.5mm

Perform the same procedure for the next surface and middle portion also

trim unwanted portions

Then apply the edge fillets as per required and change the color of trimed part

Create boundary for class a surface and also for holes and then draft for 3 degree by using sweep command

Then join class A and class c surface using join command and Then trim the joined surface with the Class B surface

Then use close surface boundary to make closed surface solid

features tree image -

part modei images -