Week 9 - Challenge 1 - Base Bracket Design

AIM : 

To create the Base Bracket Plastic component through the given Class-A surface.

 

OBJECTIVE :

• To make sure that the model meets the requirements of the draft angle.
• To create the Tooling axis using bisecting method.
• To perform Draft analysis on the given Class A Surface.
• To create the required Class B and Class C surfaces.
• To obtain a solid body from the surface using Close Surface feature.

 NOTE :Tooling axis not provided in cat part.

CLASS A SURFACE :

•  Class A surfaces are those surfaces which are curvature continuous while providing the simplest mathematical representation needed for the desired shape and does not have any undesirable waviness.
• The Class A surface is the used to begin the design of a product.
• All the further intricacies of the component are created based on the Class A surface.

CLASS B SURFACE :

• The Class B surface is created from the Class A surface , keeping the thickness of the component in check.
• The Class B surface resembles an offsetted surface from the Class A.

CLASS C SURFACE :

• The Class C surface is used to bind the Class A and Class B surface together inorder to form a closed surface.

Creating Class B Surface

• Initially the ribs were created from the Class A surface.
• The required surfaces were obtained from the Class A surface using Extract command.
• These surfaces were further expanded using Untrim and Extrapolate commands.
• The protuding surfaces were trimmed using the Trim command and a proper continuous surface was obtained.
• The same procedure was followed for the other side aswell.
• These surfaces were offsetted according to the required thickness of the component.
• Further the base and the inclined surface of the component were obtained from Class A in the same manner.
• These surfaces were offsetted accordingly and trimmed with the ribs, forming a proper Class B.

 

• Finally all the necessary fillets were added to the Class B surface.

 Creating Class C Surface

• The Class C surface connects the Class A and Class B surface.
• Initially the outline of the Class A surface was obtained using the Boundary command.
• The the Sweep command was used along With draft direction, with a draft angle of 3 degree.
• Further the holes presented in the surface were created in the same manner.
• All the swept surfaces were finally attached to the Class A surface using the Join command.
• Finally all the 3 surfaces were trimmed to form a closed surface.

Creating Solid Body

• Using the surface created the solid component was obtained using the Close surface feature present in the part workbench.
• The Tooling axis, Class A, B and C surfaces were published.