Week 8 - Challenge 1 - Base Bracket Design

AIM:

Create the Base Bracket 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.

REPORT ON DRAFT ANALYSIS:

CLASS A SURFACE:

STEP 1: Check the connectivity of the Class A Surface

• Ensure that there is no gap between the component, using join command.
• We can visually check it or by clicking boundary command.
• It has 3 boundaries one outer and two inner circle boundarie

STEP 2: Find the tooling axis of the component. The tooling axis is nothing but the cavity opens.

• Check visaully which is the best possible tooling axis.
• Check all three axis.
• z is the best possible tooling axis.

Creating a Tooling axis along z:

Intersect the yz plane with the fan component. As a result we get 2 line on yz plane. Therefore the main tooling axis is along z axis.

Now perform the Draft analysis using the Featured Draft Analysis tool in the tools. Then after opening the draft analysis tool box go for the compass and place the compass alinged to tooling axis and click on the lock symbol after alinging and further click on the surface.

Then it will be shown green colored.Now measure individually.

creating Class B Surface:

• extracting the right side rib using extract option from Class A surface
• perform Untrim option
• perform Extrapolate inorder to increase the length
• trim the surfaces to required surfaces
• Offset the surface inorder to get the required thickness

similarly create for other side

Now Similarly get the slanted as well as the flat surface and offset it to desired value And now trim inorder to get the required surface Now fillet the surface to required amount

creating Class C Surface:

Using boundary option to select the outer boundary of the surface and holes in that surface and sweep the selected boundary using sweep tool and then give final trims to get required shape of a class c surface

EXPLANATION ON BISECTING METHOD:

• Bisecting method is use to find the proper tooling axis using the dummy tooling axis.
• Bisecting line is used which either bisect the two line or it will show error which means the two lines are parallel to each other.
• In order to know whether the particular surface is toolable or not we intersect the surface with the respective plane and get a sketch which consist of two lines and with the help of bisecting line option we bisect the line which creates a line at the mid point of the two lines.
• create tooling clearing axis for x and y which will be used to create the main tooling axis using the bisecting line option in in the line comand.

Screenshot of the complete Draft analysis:

Class A Surface:

Final Plastic Product:

Screenshots of the solid model with the proper color code of the draft angle in various orientation:

ISOMETRIC VIEW:

FRONT VIEW:

TOP VIEW: