Challenge

Week 9 - Challenge 2 - Switch Bezel Design

UUdhayakumar R18 Apr 2023

INTRODUCTION:

The control panel bezel is the frame part of the window switch that holds its switch covers and buttons into place.Moulding is the method used to manufacture the plastic trims of an automotive by most OEM's.hence by considering the manufacturing consideration the switch bezel is designed.

PROCEDURE:

First,the given stylish surface is checked for any irregularities and if found and then it is corrected by using trim,extrapolate,split and join commands.The below images shows that the Class-A surface is clean and no irregularities present, so let's move on to the next step.

CLASS A SURFACE

CREATION TOOLING DIRECTION

Considering the ejection from the cavity of the mould after manufacturing the interior trim must have the nominal 3degree draft angle.Hence the tooling direction is created by considering the above factor and bisecting method is used.

CREATION OF B SURFACE

For creating the class-B surface the required surface except the offset surface have been extraced and then untrimmed all the surface.Then all the surface have been extrapolated to get intersections between them.Since the thickness of the switch bezel is 3mm.

CREATION OF CLASS-C SURFACE

The required outer edges of the A-surface were extracted using Multiple Extract.Then for avoiding the patches the curve is smoothened using the curve smooth option.Then by using the sweep command the surface was created.
After using the extrapolate command the edges were intersected between the surface cornors which eases the trimming operation.Now the required portion of the C-surface were trimmed out.

CREATION OF CLOSED SURFACE:

Now the class-A and class-C surfaces were joined together by removing the gaps in-between them with the help of extrapolation and Trim surface.Then the exact surface of the switch bezel was trimmed from the above -resulted trim surface with the class-B surface.
Then,by defining the part body by using the closed surface command in Part design,the components's solid body is created.