Week 8 - Challenge 2 - Switch Bezel Design

Aim-

Create the Switch Bezel Plastic component through the given Class-A surface. To begin with, the tooling axis for the given Class-A Surface should be created meeting the requirements of the draft angle and at the end perform the Draft analysis on the model.

Take the Thickness of the component to be 2.5 mm

INTRODUCTION:

CLASS-A SURFACE:

A surface made by the designer is given as an input to the plastic modeler to work on. It is an aesthetic surface and the outermost surface.

CLASS-B SURFACE:

A surface below a certain thickness from the class-A surface is a class-B surface. This is the surface that contains engineering aspects of a model.

CLASS C SURFACE:

The surface that joins class-A and class-B surfaces is the class-C surface.

TOOLING AXIS-

The tooling axis of the product tells us the direction of movement where the part is being produced effectively.

1. Considering the ejection from the cavity of the mold after manufacturing the interior trim (switch bezel) must have a nominal 3-degree draft angle.
2. Hence the tooling direction is created by considering the above factor and bisecting method is used.
3. The base surface of class – A was extracted and a point at the center was created and an axis system was inserted to the point with the current feature disabled.
4. Then, a project intersection along the YZ plane was created and the two inclined lines were drawn inside the positioned sketch.
5. Then bisecting lines with the two inclined lines were drawn.
6. Now the same procedure is done along the XY-plane but on one side we don’t have inclined lines so the center point is used to extrude a line along the z-direction and gave a measurement of 5 degrees (Tentatively).
7. With these two lines from sketches 1 and 2, the bisecting line is created and published as Tooling Axis (tooling direction).

Draft Analysis FOR CLASS A:

1. First the class – A surface is checked before creating the Class –B&C surface and finally the solid body must be analyzed. Both can be done by following the below procedures.
2. By changing the view mode to custom view parameters – Material mode then the feature draft analysis is enabled.
3. The compass was activated and placed with the tooling axis by dragging the red pointer and then locking it.
4. Then, by selecting the quick analysis mode, the nominal value will be 3 degrees and checked for the component's draft angle.
5. The green Colour area shows that it satisfies the 3-degree draft angle. If not satisfied then by using the Running point tool the area is measured and then altered to get a successful draft for the created tooling direction.

# Close surface draft analysis-

SOLID PART IMAGES