Originally Posted by tgrandahl  Ok so getting back in the groove of things I have some screen shots of my two current models.
First the one with the lead screw mounted on the back similar to joe's design, this is still very rough and I am just trying to get an idea of where to locate things. I dont think there will be much of a difference between mounting the beatings vertically or horizontally.
The pictures show mounting holes for a nema 23 stepper, but because the screw will be belt driven i should be able to shave that down quite a bit.
The second shows the cut out that would be needed to run the lead screw inside the y axis. I am not skilled enough to do a stress analysis of this model so I suppose it will be best to leave this idea for now.
I want to get the x and y situated before I start on the z axis. I may have some more time to work on this tonight and if so will post updated images. |
Another thing to think about is, think how much more you would have to tear down in order to fix the nut inside the beam, if anything ever goes wrong (and it always does).
So even in mounting the screw, think about mountings that make it easier to mount and remove (like a bearing plate) that bolts to the outside of the beam flange with a hole big enough in the flange to pull the whole screw through.
Alan