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

                                                    

                                                                                          given class A  surface

Procedure for creating the switch bezel

• Creat tooling axis
• Creat B class surface
• Creat C class surface
• creat closed surface
• Do draft analysis

Creat tooling axis

1.the tooling axis is created by Normal to surface method

2.The base surface of the class - A was extracted and a point at the centre is created

3.then use line commend to creat tooling axis by normal to surface option in line command 

     

                                                                          tooling axis 

                                                                       

                                                      Tooling axis and its Tree Structure

Creat B class surface

1. For creating the class - B surfcae the required surface except the offset surface have been extracted and then untrimmed all the surface.

2.Then all the surfaces have been extrapolated to get intersections between them.

3.Since the thickness of the Switch bezel is 2.5 mm the B- Surface was offset to 2.5mm and the required trim operations must be carried out.

4.Finally, the required corners have been filleted 12.5mm ( 15mm-2.5).

                                   

                                                                                   

                                                                          B class surface and its Tree Structure

Creat C class surface

1.The requred outer edges of the A- surface were extracted using Multiple Extraxt. Then for avoiding the patches the curve is smoothened using             the curve smooth option.

2.Then by using the sweep command the surface was created with following feature controls.

        Profile type - line

        Subtype - With Draft direction

        Guide curve - smooth curve

        Draft Direction - Tooling axis

        Draft computation Mode - Square

        Angle - 3 degree

        Angle Sector - Positive Downwaed

        Length - 20mm

3.Then by using extrapolate command the edges were intersected between the surface corners which eases the trimming operation

4.Now the requred portion of the c - surface were trimmed out.

                                                         

                                                                                             

                                                                    C class surface and its Tree Structure

 create of closed surface

1.Now the class - A and Class - c surfaces were joined together by removing the gaps in between them with the help of extrapolation ( tangent continuity ) and trim surface

2.Then the exact surface of the switch Bezel was trimmed from the above - resulted trim surface with the class - b surface.

3.Then by defining the part body by using the closed surface command ib Part Design, the component's solid body is created.

                                    

                                                                                      

                                                                              close surface and its Tree Structure

Do draft analysis

1.  First the class - A surface is checked before creating the Class - B & C surface and finally the solid body must be analysed . 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. Then the compass was activated and placed with the tooling axis by dragging the redpointer and then lockes 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.

Isometric, Front, Side, and Top View

Conclusion

 Finally i done 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