Aluminium FEA optimalized CNC router

[PotatoMill]

It would probably be best to make a 3:1 gearing to utilize the holding torque best. Or is it possible to get cheap ballscrews with shorter than 5mm lead?

[remrendes]

It would probably be best to make a 3:1 gearing to utilize the holding torque best. Or is it possible to get cheap ballscrews with shorter than 5mm lead?

I would go for 10mm pitch and direct drive.
On 500rpm it is 5000mm/min, more than enough.

[PotatoMill]

I would go for 10mm pitch and direct drive.
On 500rpm it is 5000mm/min, more than enough.

Wouldn't I want shorter pitch? If not I would not get close to the corner speed at all. And waste a lot of usable torque.

[remrendes]

Wouldn't I want shorter pitch? If not I would not get close to the corner speed at all. And waste a lot of usable torque.

With steppers? No, not really.
What do you mean with a corner speed?

Here you can see a torque curve for both. You can calculate with a 0-500rpm range.

Unfortuantely it is Hungarian, but here you can see my calculation for my X axis with servo. This is the optimal for a dynamics, but I chosen 2.5:1.