Well here goes... Aluminium frame router design

[njhussey]

On the schematic it only showed the two AC wires that were going to the driver, don't think I even put a representative box on it....

[Clive S]

On the schematic it only showed the two AC wires that were going to the driver, don't think I even put a representative box on it....

I looked here but didn't notice the 230V drive. That will teach me to assume. ..Clive

[CharlieRam]

I have been looking at the nema 34's and I am confused about the specs..
They all seem to quote a recommended voltage of about 2v, whats that all about? Would one nema 23 just not be able to move the mass because the 34's are quite a bit larger and wont fit in the location I have put it, which means putting 2 nema 23's one on each ballscrew which then also means a controller which supports slaved drives and controllers with error detection which means £££ ! I am trying to sell this to the better half as a bit of additional income but when I mention a couple of hundred pounds extra on top of my ever increasing budget she doesnt seem very impressed, I don't know why

[njhussey]

Charlie, what's the weight of your gantry complete with the spindle? If you put that weight into the motor calculator spreadsheet you'll be able to see if one Nema 23 will do it. On my gantry it was going to be only just ok (I've got more plate in mine than you have as I believe from the drawings you're using alu box sectio to mount your rails to?) so I went larger to be on the safe side. If you're borderline all it will mean is that you won't get the higher speeds of velocity and acceleration.

[CharlieRam]

Well I have attempted to work it all out and this is what I came up with?

Aluminium on gantry 31kg
800mm rails+blocks 5.8kg
400mm rails+blocks 3.6kg
4 blocks on x axis 1.6kg
Z ballscrew+mounts 2.5kg
Y Ballscrew+mounts 3kg
x axis ballnuts 1kg
2 nema23 motors 3.6kg
CapScrews? 2Kg

Total weight 54.1Kg

Does that sound about right? have I missed anything. I suppose I need to look at the calculator now.

Cheers charlie