Week 8 - Challenge 3 - Coin Holder Design

AIM:

Creating the coin holder plastic component through the A-class surface and add thickness to it

Objective :

• Creating the B and C surface
• Creating the tooling axis
• Performing the draft analysis on both A surface and final plastic components.
• Take the Thickness of the component to be 2.5 mm

Introduction :

The input of the product designer is in the form of the A-class surface. The job of the product designer is to create the B and C surfaces keeping all the aspects for the mold.

Class A is

1.Visible surface and aesthetic look

2.surface with textures

3.Surfaces provided by customer(OEM)

4.Don't have any features like(rib, snap, bosses, etc) on class A surface.

5.Class A surface is made from scanned data with different software like alias etc.

6.Surfaces which are having CURVATURE CONTINUITY IS CALLED class-A.

Class B surface:

1.invisible Surfaces.

2.Surface mostly don't have textures

3.Surface needs to be created according to the class-A surface.

4.having all features(Rib,boss,snap etc) in B-side surface only.

5.Surfaces which is having TANGENT CONTINUITY IS CALLED class-B

CLASS-A SURFACE:

TOOLING AXIS:

• Tooling axis can be classified into two methods

1. direct method

• For this model, to use a line at mid-point of the base of the coin holder
• Due to perpendicular walls of the class A surface

DRAFT ANALYSIS:

• The Drafting analysis was performed on the class-A surface by using the Feature Draft Analysis command.

• Using this command, the compass was set on the main tooling axis and the Draft angle was changed to 3 degrees.

CREATING CLASS-B SURFACE:

1. SIDE WALLS:

• To create a side wall by extract the class A side faces
• To untrim the extracted side walls
• To extrapolate them for make sure to pass through all together for merge
• To trim the unwanted faces from walls by trim
• To offset the walls up to 2.5 mm

3. BASE:

• To create a base by extract the base from class A
• To untrim and extrapolate the base for final trim to create a B-surface

TOP WALLS:

• To create a top wall by Mutiple extract the class A side faces
• To extrapolate them for up to requirement
• To offset the walls up to 2.5 mm

BEFORE FINAL TRIM OF CLASS B SURFACE:

AFTER INITIAL TRIM:

OUTER FLANGES:

FINAL TRIM:

B-SURFACE:

CREATING C- SURFACE:

• To use multiple extract tool on the class A surface
• The extract boundaries can be sweep at 90 degrees to the reference boundaries up to required length

SURFACE MODEL OF A COIN HOLDER:

SOLID MODEL OF A COIN HOLDER:

FEATURE TREE: