Giant 20' x 3' x 2' router build

[charlieuk]

Many thanks for that info again, i will most likely then go for the EM806 drivers from zapp as it does sound like a worth will benefit as the machine is so big in the x axis.

cnc4you nema 23 were as zap call them SY60STH86-3008B, will they in fact be exactly the same? i will most probably get those and the rest of the little parts from cnc4you.

Zapp mentioned that it may be worth running a nema 34 on the x axis with possibly one of there 3 to 1 gearboxes which would allow a direct drive which may simplify things but not sure if i will be able to fit it all in like that without having to mount the motor up top and still have the belt that i was originally planning.

Does any one have any experience with the quality of the zapp gearboxes for the nema 34?

Many thanks again for all the help sorry for so many questions but i just want to be double sure on every thing as it is all totally new to me and obviously a lot of money involved in it all that is extremely tight.

[Jonathan]

It's hard to say how good the driver from CNC4You is, as the description doesn't state what algorithm they use - just some 'buzzwords' which appeal to those who don't know so much about the subject. We can therefore only speculate as to which is best - e.g. the lack of software tuning could be a disadvantage, or it could just mean the drives uses algorithms to automatically 'adapt and learn', so manual tuning is not required.

cnc4you nema 23 were as zap call them SY60STH86-3008B, will they in fact be exactly the same? i will most probably get those and the rest of the little parts from cnc4you.

I have not observed a tangible different between the two motors from the measurements I have taken.

Zapp mentioned that it may be worth running a nema 34 on the x axis with possibly one of there 3 to 1 gearboxes which would allow a direct drive which

You appear to have ballscrew on the Z-axis, so the mechanical advantage to the motor to lift the axis is already huge. You definitely don't need and therefore shouldn't use a bigger motor on the Z-axis as it is important for this machine to have quite high feedrates, which you certainly wont get with a Nema 34 motor, especially with a gearbox.

[charlieuk]

It's hard to say how good the driver from CNC4You is, as the description doesn't state what algorithm they use - just some 'buzzwords' which appeal to those who don't know so much about the subject. We can therefore only speculate as to which is best - e.g. the lack of software tuning could be a disadvantage, or it could just mean the drives uses algorithms to automatically 'adapt and learn', so manual tuning is not required.





I have not observed a tangible different between the two motors from the measurements I have taken.



You appear to have ballscrew on the Z-axis, so the mechanical advantage to the motor to lift the axis is already huge. You definitely don't need and therefore shouldn't use a bigger motor on the Z-axis as it is important for this machine to have quite high feedrates, which you certainly wont get with a Nema 34 motor, especially with a gearbox.

Many thanks Jonathan for that i will see if i can find out more about the cnc4you drivers if posable but it sounds like all you lot use the others so hopefully all your support will be sufficient to get me out of any problems im bound to have.

the z axis and y axis is a ball screw and will be the nema 23 3nm . The long X axis is what they suggested the nema 34 possibly with a gearbox for as the gantry weight will be some where around the 60kg area sorry i may have confused you.

best regards

[Jonathan]

the z axis and y axis is a ball screw and will be the nema 23 3nm . The long X axis is what they suggested the nema 34 possibly with a gearbox for as the gantry weight will be some where around the 60kg area sorry i may have confused you.

Sorry, that was my fault - for some reason I read 'x axis' as 'z axis'. The gearbox is a reasonable suggestion for X - you need something there (be it a gearbox or belt) to get sufficient resolution and better acceleration.

[charlieuk]

no worries yes im going to see if i can fit the gearbox in as it will be one less thing i will have to have made assuming they are good quality.

[JAZZCNC]

Many thanks for that info again, i will most likely then go for the EM806 drivers from zapp as it does sound like a worth will benefit as the machine is so big in the x axis.

cnc4you nema 23 were as zap call them SY60STH86-3008B, will they in fact be exactly the same? i will most probably get those and the rest of the little parts from cnc4you.

Good idea and I've not seen any differance between the motors either so your good to go there.!

Zapp mentioned that it may be worth running a nema 34 on the x axis with possibly one of there 3 to 1 gearboxes which would allow a direct drive which may simplify things but not sure if i will be able to fit it all in like that without having to mount the motor up top and still have the belt that i was originally planning.

Does any one have any experience with the quality of the zapp gearboxes for the nema 34?

Yes thats what I've done in the past and they are nice units Italian made I believe.? Just be aware thou the Nema34 motors don't spin as fast Nema 23 motors unless running High voltage drives(240V ac) so if your needing certain feeds rates for cutting your foam etc then be sure to select the correct ratio but other than that it's a good solution. Also be aware that the gearbox does make the overall motor/geabox length quite long so check you have room.

Many thanks again for all the help sorry for so many questions but i just want to be double sure on every thing as it is all totally new to me and obviously a lot of money involved in it all that is extremely tight.

Yes but it will be worth the trouble, don't look at the extra expense as costing more think of it in terms of saving money.? You'll only be spending one time not replacing and regreting.! . . . . To quote My Guru Ger21 . . "The cheapest way to get a good machine is to spend more money."