Well here goes... Aluminium frame router design

[Clive S]

There is no problem using one motor I think most would use a nema34 in this case. You can buy the belts made to measure it might be an idea to have the belts lower down so as to be able to put long lengths of stock through the back etc.

[CharlieRam]

Cheers, Just noticed your build seems to have a long belt on, Does it whip much on change of direction and whoa, there big pulleys, do they need to be that big? I was going for minimal?

[CharlieRam]

Sorry, that last post was to njhussey, You posted to quick, I know I can get a belt long enough but I don't know if the flex/whip will cause issues such as catching the inside of the box section which I plan on using just because that is whats left from my cut plan :-) If theres a problem then I would rather rectify it now rather than buy stuff that won't work...I'm tight like that ;-)

[Clive S]

The problem with big pulleys I am led to believe is the inertia that they have. I have no idea on how much the belt will sag but you can always add the belt cover when you have it up and running.
You will need to run a 70V power supply for the motors.

[njhussey]

I'm running my Nema 34 on a 230V Kinco driver and at the moment it's running on 10 m/min rapids and very happy, had it on 15 m/min and was still happy but don't need that sort of speed. I got the 40 tooth pulleys as the Nema 34 has bags of torque and I wanted as much tooth engagement as possible...

I've not noticed any whip on change of direction...

[Clive S]

Neil I thought you had used 230V but when I looked at your schematic I saw three drives connected to the PS did you originally go with nema 23 all round?

[njhussey]

Neil I thought you had used 230V but when I looked at your schematic I saw three drives connected to the PS did you originally go with nema 23 all round?

I've got an AM882 driver for a 4th axis as well now but did originally plan to use a Nema 23 on all axis as the calculator showed I'd be able to use it on the X axis but I decided to play it safe and go up a size.

[Clive S]

I've got an AM882 driver for a 4th axis as well now but did originally plan to use a Nema 23 on all axis as the calculator showed I'd be able to use it on the X axis but I decided to play it safe and go up a size.

Ah! that fooled me

[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