In emergency mode - let's leave out why I'm in emergency mode but lets just say that a few years ago I bought a 4th axis, got it turning and never used it. I'm now working frantically to finish a job which requires 4th axis work which is due on Saturday.
I'm setting it up for the first time and to align it in the table, I purchased a long piece of 1" steel drill rod. This 4th axis has a 4 jaw chuck so my first step is to align the drill rod in the 4th axis. I found a very quick way to do this on youtube here: https://youtu.be/2KMhx4DbyDg
In the process of doing this, I saw that depending on the direction the table is rotating, I get different amounts of runout. Here's a quick video showing what I'm getting: https://youtu.be/LYiYb_h7PB4
I bought the drive several years ago but it looks exactly like this:
CNC 4th Axis Router A Axis 100mm Chuck Gapless Harmonic Drive Reducing Gear Box | eBay
I can't understand at all what could be the problem? Could it be the bearings are garbage?
Any ideas on what to do?
I'm thinking that perhaps if I can force my cam software to go in only one direction I just might be able to finish the part but I'm not even sure yet if that's possible.
Any and all ideas are welcome and much appreciated.