CEG Rotor

 OK, I finally have the major cuts done on the CEG Rotor.  This includes the radial cut where I made the round shape of the rotor, and the peripheral holes for the electrodes.  The Rotor is four inches in diameter, and a half inch thick.  Then there are the holes around the periphery which are pilot holes for 1/4-20 screws.  There are 24 pilot holes spaced 15 degrees apart, at the four inch diameter of the Rotor.  At this point it is a rough cut piece.  There are more operations to perform.

Now take a look at the drawing.  The outer diameter of the cut is the same, and the 24 pilot holes are there.  But the drawing has more features that haven't been machined into the part yet.  There are chamfers around the edge of the Rotor on both the top, and bottom sides.  The center hole is a larger diameter.  The tooling holes are not in the drawing.  The pilot holes are the same diameter, but both the drawing, and the part do not have the 1/4-20 threads.

So, yeah, there is more work to be done in the machine shop.  The center hole was first used to align the part to the center pin on the Rotary Table.  When I finish the machine operations that use the Rotary Table I will increase the size of the center hole to 0.375" to fit the Arbor I picked to hold the Rotor in the assembly.  Also, I will need to tap the pilot holes for 1/4-20 screws in order to hold the electrodes.

Here I have revised the CEG Rotor drawing a little.  I changed the Chamfers to make the angle a little steeper.  The Tooling Holes have been added.  The change in the Chamfers is to accommodate the tooling holes.  We want some nice flat, level areas where the clamping screws are holding the part in case there is some reason I want to put it on the Rotary Table again.