Hybrid Mill Design

[Chaz]

Hi Chaz,

Some thoughts -
1.The plates which hang off the Y axis (and hold the Y bearings) look weak as they cantilevered off the side.
2. How will you clamp the spindle? Are you planning on using grub screws? Not sure that is a good idea.
3. Are you only using 1 bearing per rail on the Z axis? I would use 2 per rail.
4. I would use 2 screws on Y to get the most out of a machine like this.
5. 2 screws in Z is worth looking at but it takes up Y travel and I think one screw is still pretty good.

I've also been working on a new design over the past few weeks based on the DMG Mori - here is my attempt so far:

Iso metric:


Side:


Top:


Y axis:


Box Z axis:


Underside of Z axis showing spindle clamped by front plate:

1.The plates which hang off the Y axis (and hold the Y bearings) look weak as they cantilevered off the side.

They could be improved / widened, would that still be a concern?

2. How will you clamp the spindle? Are you planning on using grub screws? Not sure that is a good idea.

Agreed, not sure either. Problem is, how do you ensure that the square remains perfectly square (for the rail system) when you tighten to clamp the spindle?

3. Are you only using 1 bearing per rail on the Z axis? I would use 2 per rail.

Understood / agreed.

4. I would use 2 screws on Y to get the most out of a machine like this.

Understood / agreed.

5. 2 screws in Z is worth looking at but it takes up Y travel and I think one screw is still pretty good.

Fair point, I was looking at this to mitigate for only having 4 carriers. I dont really want to go to 8 and I like the idea of a square / Octogon shape for strength. Suppose a traditional design might be better.