Gecko G540 or?

**JAZZCNC** · 16-10-2014

Originally Posted by JW1977

The design looks like a machine thats called "high z 1000" if you want to check with Google.
Size would be about 1000x600 mm. The machine should be allround, Wood but also alu.

Well sorry to say this but if your copying the Heiz high Z 1000 then you do need help.!! . . . It use's unsupported round rail and as got flimsy Z axis.
It may well look ok and scratch it's way thru aluminium but it's far from ideal and much better design could be made that isn't much more work.

Suggest you post your idea or drawing.!

**JW1977** · 16-10-2014

It was a bad idea to bring up the High Z. Should have stuck with just saying 4-axis machine.
I can say this much that im going to use supported rails mounted on 2 pcs of alu extrusions. These two sides will be held together by two (dont know the English Word for it) but two end pieces, watercut alu... Theres much more, i will post something when ive got something solid.
I got this, im sure of it... If not, ill ask you guys... ;-)

EddyCurrent; Yes, i will gladly take some advise for the Electronics part. Thats why im here...

**JAZZCNC** · 17-10-2014

Regards electronics then really it boils down to one standard setup for this size machine to get best performance and it goes like this.

3Nm 4.2a 8 wire low inductance Nema23 motors wired in parallel.
75-80Vdc digital drives
65-70Vdc PSU
16mm 10mm pitch ballscrews on X & Y
16mm 5mm pitch on Z axis.
Good quality BOB
And if you want the very best performance and reliabilty then external motion control card to get away from parallel port.

Yes you can calculate the torque required and probably get away with lower NM motors and possibly use 50Vdc drives along with smaller PSU but the above setup won't cost much more and will be well on top of the workload giving maximum performance while at same time giving redundencey which prolongs life of components as they are not working near there limits all the time.