Week 8 - Challenge 1 - Base Bracket Design
Report:
draft analysis and the tooling axis creation, creating the tooling axis, & the Bisecting method.
GIVEN CLASS A SURFACE:
TO Find the tooling axis of the component:
1.Check visaully which is the best possible tooling axis,Along x axis it is possible but expensive and y axis is not possible.
z axis is the best possible tooling axis.
2.Initially, we created a dummy tooling axis on Z-axis by considering the reference point created in the middle of the circle.
Using the YZ plane an intersection is to be made.
Two lines need to be created from the points-take any two of the incline lines as reference:
Create a bisecting line for the inclination lines as shown below:
now by bisecting slanted line we will get the main TOOLING AXIS as shown:
Bisecting method is basically use to find the proper tooling axis using the dummy tooling axis. In Bisecting method, bisecting line is used which either bisect the two line , if 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. Like wise we 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.
DRAFT ANALYSIS:
Now perform the Draft analysis using the Featured Draft Analysis tool in the tools.Once the draft analysis toolbar is opened, go to the display block and select the 'Analysis under the running point' command to check the angle for different sides on the class A surface. The color scale on the bottom visualizes, whether the draft angle meets the requirements or not (3 deg) by indicating the colors Green, Blue and Red. Once the draft angle analysis was done, we need to align and fix the compass to the tooling axis of the class A surface
above image is Draft analysis of Class A surface.
Now creating Class B Surface:
Extracting the right side rib using extract option from Class A surface.Then perform Extrapolate inorder to increase the length,Now trim the surfaces to required surfaces.Then Offset the surface inorder to get the required thickness.
Similary create the left side rib.
Now fillet the surface to required amount.
Now creating Class C Surface:
It is the combination of Class A, Class B and Class C surfaces. To create a class C surface, I used the sweep command by considering the outer boundary of the class A surface. In the sweep command, go to the 'line' command in the 'profile' block and the subtype is 'with draft direction'. Now select the outer boundary and tooling axis, give 3 deg in the angle (the draft angle for a plastic component is 0.5 to 3 deg) and select the direction to sweep, in this condition the class B surface is under the class A surface so select the inside down arrow to sweep. The same procedure is repeated for the two circles on the class A surface.
Draft analysis report for final plastic component:
