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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. Solution : Draft angles present one of the key aspects of designing plastic parts to for the injection molding process. Draft angles or tapers on…
abhijeet dhillon
updated on 16 Feb 2021
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.
Solution :
Draft angles present one of the key aspects of designing plastic parts to for the injection molding process. Draft angles or tapers on injection molded plastic parts facilitate part ejections from the mold. Unlike 3D printed parts or machined parts, injection molded parts must consider how the parts will be removed from the mold. Usually a mold involves a cavity side which is the hollow side, and a core side which is the opposite side.
Before the mold opens, the resin has already begun to cool. Cooling causes the resin to shrink. Shrinkage causes the resin to tighten around the core. When the mold opens, the core and cavity separate. The part sticks to the core side of the mold.
Check for Connectivity using Join Command :
As you can see it is continous,now we will see if the faces are perpendicular to the tooling axis as shown below :
As you can see the non parallel sides can be problem during moulding therefore they need to be checked.This is done by creating the bisecting line as shown below :
Now creating the tooling axis in the y axis we get :
Creating the bisecting line we get the following :
Now using the bisecting line tool we will bisect these two to get a single line as shown below :
Now we will use feature draft analysis as shown below :
If we increase the draft to 10 degrees we get :
Red meaning the draft angle is between 10 and 0 degrees.
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