Week 8 - Challenge 2 - Base Bracket Design

Intoduction:

In automotive design, a class A surface is any of a set of freeform surfaces of high efficiency and quality. Although strictly, it is nothing more than saying the surfaces have curvature and tangency alignment – to ideal aesthetical reflection quality, many people interpret class A surfaces to have G2 (or even G3) curvature continuity to one another (see free form surface modelling).

Class A surfacing is done using computer-aided industrial design applications. Class A surface modellers are also called "digital sculptors" in the industry. Industrial designers develop their design styling through the A-Surface, the physical surface the end-user can feel, touch, see etc.

A common method of working is to start with a prototype model and produce smooth mathematical Class A surfaces to describe the product's outer body. From this, the production of tools and inspection of finished parts can be carried out. Class A surfacing complements the prototype modelling stage by reducing time and increasing control over design iterations.

Class A surfaces can be defined as any surface, that has styling intent, that is either seen, touched or both and mathematically meets the definition for Bézier.

• Automotive design application
• Product design application
• Aerospace design application
• Clay modelling
• Notable software.

BASE BRACKET DESIGN

Creating class B & class C Surfaces with the reference of Class A Surface given in the question.

Class-A Surface: The top-most surface which is the present exterior of the component is ca be a Class-A Surface

Class-B Surface: The Surface which is interior to the component is said to be a Class-B Surface.

Class-C Surface: The Surface which joins the Class-A & 8 Surfaces is our Class-C Surface

Procedure:

Step-1:

1. Create an axis for the component for which the component should move in the tooling axis.
2. For that, take an axis system and make an intersection to the corresponding plane.
3. Then make a bisecting line to that intersection and make that line your tooling axis
4. From that tooling axis, were gonna make Class B & C Surfaces;

Step-2:

1. After taking your tooling axis, take the Class-A Surface as the reference to make Class-8 Surface.
2. First, take a Geometrical Set and rename it as Class-B Surface and work it from there.
3. Then divide the Class-A into simpler geometry. First, take the two ribs and work on them.

Step-3:

On the first rib, Extract the three surfaces which act as a rib.

Step 4:

After Extracting, Untrim the surfaces and extrapolate it with point continuity.

Step-5:

Trim those extrapolate and make it as a single component (rib)

Step-6:

Make an offset to the trimmed component (rib) of 2.5mm downwards Do the same process for another rib, slope surface and base surface also

Step-7:

Trim those four surfaces and make it as a single component (Class-B).

Stop-8:

Make fillets to your surface according to your thickness and Class-A Surface

Step-9:

The next step is to make Class-C Surface from Class-A

Take boundary to your Class-A & sweep the curve to the draft direction.
And Make the entire Class-A to the Class-C Surface.

Step-10:

Now, Trim the Class-B & Class C Surfaces to get a component that joins to your Class-A and makes as a final component

Step-11

The last step of your component is to make a solid body by going into Part Workbench and doing the Closed Surface command. Then you obtain your PartBody

Step-12:

After making it as a complete body, do draft analysis and ensure the body is manufacturable.