Suitable stepper motor drivers for my creation

[Lee Roberts]

Hi Chilly,

Yea I think that's a good price for the Leadshine DMA860H drivers and offers room for a bigger PSU output in the future, for the 80v drivers around 70v is a good target for the output of the power supply to get the best performance safely.

The most obvious things that stick out to me about the machine are,

The belt on your bed axis looks a little loose, I would consider designing in a couple of cam roller bearings to act as a belt tensioner, don't actually use a cam roller bearing as they can be expensive, a standard radial type bearing with a built in flange would work just as good, have a look at how others have implemented this in the build logs section, start with routercnc's MK4 machine.

I would consider lowering your gantry height as well, its quite tall and realistically you'll still have more than enough "headroom" for sheet material and quite thick plate, doing this will give better rigidity and stiffness is what its all about.

Be very careful pushing the motors to hard and or fast, those spiral beam couplings you've used don't like taking a lot of abuse, they look great at first and don't cost much which is attractive but I wouldn't use them on anything other than a really light weight machine i.e a 3D printer. I've seen quite a few just simply snap at the spiral, their just far to light weight and really need quite good alignment of the connecting shafts to be reasonably reliable.

Lastly... Get yourself a new Hat rack and move that one because its going to get covered in swarf