Week 8 - Challenge 1 - Base Bracket Design
AIM: to make a model from the provided class-A surface.
INTRODUCTION:
CLASS-A SURFACE: a surface made by the designer which is given as an input to the plastic modeler to work on. It is aesthetic surface and the outer most surface.
CLASS-B SURFACE: a surface below a certain thickness from the class-A surface is class-B surface. This is the surface that contains engineering aspects of a model.
CLASS-C SURFACE: a surface that joins class-A and class-B surfaces is class-C surface.
TOOLING AXIS:
- First ensure the class-A surface is properly joined and has no discontinuity on it. For this we can use boundary command or join command.
- Analyze the model manually or visually to see which direction is most suitable for tooling axis.
- As in 3D view we can see 2 holes and a flat surface, we can directly take the tooling axis perpendicular to that. But to be sure,let us analaze from all the views. The below images of the front side and top views shows the areas that we have to keep in mind while choosing tooling axis. As from X we cannot see one hole so we cannot take axis along this. In Y we cannot see any holes so here too we cannot take tooling axis. But in Z we can see 2 holes and flat surface so we can take tooling axis.
DRAFT ANALYSIS:
- Go to insert< analysis< feature draft analysis.
- Align the tooling axis with the compass.
- Click on the surface and see that the surface is within the permissible limit of the draft values.
- The surface should be green and in the column proper value (3deg) should be inserted.
CLASS-B SURFACE:
Offset Class A surface By 2.5MM i.e. thickness of the component and Join them.
CLASS-C SURFACE:
Extract the boundary of the class-A surface.
Use sweep command on the boundaries one by one to get the class-C surface.
FINAL BASE BRACKET:
Join the class-A and class-C surfaces together.
Trim the class-B surface with the join created earlier.
Go to part design and close the model.
Draft analysis Of final Component:
Tree Structure:
