High Torque Motor Z Axis

[Lee Roberts]

Hi John, great reply.
I'm still trying to take it all in; I was planning to have about 100mm worth of travel on the z axis. I don’t think I’m going to need allot of speed on the z axis as most of what I want to do is in really thin wood like 3mm ply and stuff so when I design parts to be cut I will use the minimum amount of Z rais I have to as it moves to each job and so on.

I’m just trying to put this into context with what you’ve said above, I will be using the MSD range of drivers on all 3 axis's from zap/mcp. I really can’t see that I need a 400+ oz-in motor and a matching driver for such a small axis that’s not or shouldn’t really see too much in terms of cutting forces, I know I’m properly missing the point but that’s not intentional ? :confused:

[Gary]

Generally the Z axis does not need a motor the same size as X and Y.
The X 3 is different though, on mine i have SY60 on X and Y and a SY86 of Z.
The X3 Z axis is a heavy axis.

Hi John, great reply.
I'm still trying to take it all in; I was planning to have about 100mm worth of travel on the z axis. I don’t think I’m going to need allot of speed on the z axis as most of what I want to do is in really thin wood like 3mm ply and stuff so when I design parts to be cut I will use the minimum amount of Z rais I have to as it moves to each job and so on.

I’m just trying to put this into context with what you’ve said above, I will be using the MSD range of drivers on all 3 axis's from zap/mcp. I really can’t see that I need a 400+ oz-in motor and a matching driver for such a small axis that’s not or shouldn’t really see too much in terms of cutting forces, I know I’m properly missing the point but that’s not intentional ? :confused:

[John S]

Generally the Z axis does not need a motor the same size as X and Y.
The X 3 is different though, on mine i have SY60 on X and Y and a SY86 of Z.
The X3 Z axis is a heavy axis.

Very true Gary about the X3 head but the 312 oz in motor on 2:1 works just fine and this is without the gas strut.
My small Teckno Isel router that I bought minus all electronics and motors is now on 210 oz / in all round and running at 40 volts and it screams along for it's size but then again the head isn't that heavy on this one.
Again all direct drives onto 5mm pitch screws.
It remarkably accurate, here's a badge I did as an example.



Note the g's on the tails, they are all exact and no undercutting and wandering, this was engraved in brass, raised letters at 1200mm / min.

John S.