Week 8 - Challenge 2 - Base Bracket Design
DRAFT ANALYSIS:
The Draft Analysis command enables you to detect if the part you drafted will be easily removed. This type of analysis is performed based on color ranges identifying zones on the analyzed element where the deviation from the draft direction at any point, corresponds to specified values.
DRAFT ANALYSIS OF BASE BRACKET:
Insert a class A surface model of Base Bracket in CATIA V5 Surface workbench. Before Starting an exercise. We need to check the connectivity of Class A. SO use the Join command and check how well it is connected. We have to ensure that there are no surface gaps between the faces of the components. This can be done by another method also by using the Boundary command.
TOOLING AXIS DETERMINATION:
Once this is done and We ensured the continuity of components, the next step is to Find the Best possible Tooling Axis. (Tooling axis is a direction in which mold / core-Cavity opens. So analyze the component and by analysis, we find Z direction as the best possible tooling axis for the Base Bracket as we can manufacture all faces and holes in the component.
As there is a Hole in this model our priority is to clear this hole. Insert a point at the center of the hole circle. Create a dummy tooling axis. Create a plane in the YZ direction at this point. Take an intersection with the first element as a plane and 2nd element as a class a surface. Analyze which faces can cause trouble while manufacturing. Draw lines coincidentally with those surfaces. Create a bisecting line using those two lines and we get the Tooling axis. Name this bisecting line as a TOOLING AXIS.
PUBLICATIONS:
Select Class A surface and Tooling axis and go to tools and Publish them. ( We do this for the purpose of easily selecting or picking)
FEATURE TREE:
SELECTING MATERIAL:
Go to the toolbar View mode and customize it. Select Material option in Shading column.
DRAFT ANALYSIS:
Go to Insert -Analysis-Feature Draft Analysis. Use the compass to define the new current draft direction. Hold the red dot on the compass and place it anywhere on the component. Later place it along the tooling axis considering the correct direction. The 'w' of the compass should be in line with the tooling axis. Lock the arrangement.
Click on the component. The color of the component changes to green. Look into the color table. It shows green is 2 degrees, Red is in between 0 to 2 degrees and Blue is negative. The minimum draft required for the component is 3 degrees so make green as a 3degrees. So we see even for 3 the component is clearing. Analyze the component using Analyses under the running point command. As the component is green in color it indicates that the component is ready to design.
