Week 8 - Challenge 1 - Draft Analysis on a Fan Cover
AIM:
Create the tooling axis for the given Fan cover model meeting the requirements of the draft angle and perform the Draft analysis on the model.
OBJECTIVE:
Draft Analysis:
While removing the part from the tool, the consideration of draft ange should be provided to each and every area of the component in oreder to get an easy removal of the componentfrom the tool. The parts should be provided from the tool with having an certain degree from the base surface. The draft angle consideration should not be an 90 degree because the both the part and the tool surfaces will cause damage. Draft analysis technique is used to analyze whether our part model created in cad is manufacturable based on the draft condition applied. Here the part should get easily removed from the panel dies (in case of Sheet metal part) or Mold (in case of plastic). Here we are providing a direction in which components should eject inorder to get an easy removal of components from the tool. In other words it also lets us know whether the model is having a draft angle and how much is the draft angle from the tool direction.
Tooling axis creation:
Firstly, we should consider for what type of plane and axis and which is to be considerable for the easy axis creation of the component. Here the axis system is taken in the place of the plane which is easy to be considerable and understands the person for what plane is considered. Here, the point is considered in the centre of the hole and the axis system is considered at the point. The zx plane is considered and the tooling clearing X direction is created with the bisecting method of the fan cover. The another tooling clearing Y direction is created by using the bisecting line method on the yz plane. With the help of the two lines, another bisecting line method is used to create the tooling axis which is the major line to create the centre axis for the desired angle. The draft analysis is to be performed whether the angle is in the 0 to 3 degrees or above the consideration. The major consideration of Draft Analysis is whether sufficient Draft Angle is provided on the component. Components while designing should be provided with a considerable amount of draft angle depending on the manufacturing consideration. For Plastic components we provide a draft angle of 3degree(Draft angle of 0.5 is given ideally to the features inside the plastic part). But for Automotive Sheet Metal Parts, it will be from 7 degrees or more.
Complete Draft analysis
Color scale variant
Proper tree structure
Proper color code of the draft angle in various orientations:
Isometric View
Front View
Side View
Top View
Google drive link:
https://drive.google.com/file/d/1Ms7g8qAgnv-Im9ce3Q1Tc1Xu1xQxrj6Q/view?usp=sharing