Week 8 - Challenge 1 - Base Bracket Design

BASE BRACKET DESIGN BY USING CLASS A SURFACE

AIM:

To design a Base Bracket Plastic component through the given Class-A surface by creating a tooling axis and draft analysis of the given surface.

DESIGN PROCEDURE:

• To setup the class-A surface and to creating a tooling axis
• Add draft angle
• To create a base surface of model
• To create a B-surface To create a C-surface and surface model of a base bracket
• To use close surface for creating a solid part model

CLASS-A SURFACE:

TOOLING AXIS:

• Tooling axis can be classified into two methods
• Direct method
• Bisecting method:
• In this model we use bisect method based on the requirement. This method is used for complex components.
• To use boundaries and make bisect the lines for creating a tooling axis
• To ensure the class-A surface is properly joined and has no discontinuity to it.
• To Analyze the surface for to setup tooling axis based on best suitable angle and direction.

DRAFT ANALYSIS

• The Drafting analysis was performed on the class-A surface by using the Feature Draft Analysis
• Using this command, the compass was set on the main tooling axis and the Draft angle was changed to 3 degrees.

CLASS-B SURFACE:

CREATING CLASS-B SURFACE

1.RIB:

• To create a rib by extract the rib faces from the class-A surface.
• After extraction to untrim them for collide faces and extend up to some point
• To use Extrapolate for to extend the untrim surfaces
• To use trim tool for remove unwanted surfaces
• To offset the ribs down to 2.5 mm

2. BASE SURFACE:

• To create a base surface and extrapolate to meet the ribs for remove unwanted surface.

• Base surface with ribs after the trim the unwanted surfaces.

CLASS-C SURFACE:

• To create a boundary on the class-A surface and use sweep for extended throughout the B-surface for creating a surface model.
• Similarly holes also created by using swept tool along tooling axis.

SURFACE MODEL OF A BASE BRACKET:

FEATURE TREE 1

FEATURE TREE 2

FEATURE TREE 3

FEATURE TREE 4

FEATURE TREE 5

FEATURE TREE 6

FRONT VIEW

TOP VIEW

BOTTOM VIEW

ISOMETRIC VIEW

CLOSED SURFACE OF BASE BRACKET

CONCLUSION:

• To use class-A surface and create Tooling axis, Draft analysis were performed.
• The solid component was created from the surface model.