In this blog I’m going to show you a super easy and fast method for splitting a part (plastic injection molded part in this case) up into two parts (upper half, lower half).
The command we are going to use to do the actual “splitting” is the SPLIT command which makes quick work of this task. But a lot of times getting the curve/surface/etc that you want to use to split/cut the part with is the hard part!
One method to generate the curve to split with is to use the PARTING LINE command on the Mold Tools toolbar.
In this case we select the TOP plane to define the direction of pull. The key to getting this to put the parting line in the right spot is to use the “Split Faces” option!
This is exactly where you would most likely want to split this part so that it was moldable and didn’t get trapped in the mold (no undercuts).
After you hit OK, it will generate a CURVE that you can then use to make the surface you are going to split with.
Another method to get this curve that would give you absolute control if you didn’t want it at the exact division between positive and negative draft would be the SPLIT LINE command with the SILHOUETTE option and adjusting the ANGLE setting.
(See my last blog on using this command in detail… https://www.3dvision.com/blog/entry/2017/05/17/solidworks-surfacing-trick-for-mold-design.html)
Next you would use the curve generated with one of the above methods to create a RULED SURFACE that extends INTO the part enough to cut thru the wall thickness. The RULED SURFACE option of PERPENDICULAR TO VECTOR works great, using the TOP plane once again to define the vector.
Ok. Now time for the splitting…
Find the INSERT—FEATURES—SPLIT command. HINT: The easiest way is to search for it in the upper right corner of the screen!