In Holland we have a saying "liever lui dan moe". I don't know if there's a correct English translation for this, but it could be something like "rather lazy then tired". Since this is what I am, I decided to build an electric drive on the table of my milling machine.
You can download the drawings as Adobe PDF-files for your own use.
(Assy, P1, P2, P3, P4, P5, P6, P7, P8)
I'm going to use this geardrive with a 160W, 42 volts DC-motor, a motorcontroller and transformer that I salvaged from an old mig/mag welder that broke down.
It took me some time to figure out how to connect everything, because a part of the electric diagram of the welder was missing.
With this controller, motorspeed is steplessly variable from 0 to 180 rpm. With 2,5mm/rev., this equals a tablespeed of 0 to 0,45 meters per minute.
The table drive is going to be mounted on this bracket at the left side of the table.
First thing I did was machine the top of the bracket while it was still in place, so that it is parallel with the top of the table.
Bracket completely machined to fit the table drive.
The third mounting hole is added just to be sure. The drive motor is rather heavy and I don't want it to fall off.
OK, I didn't completely machine this motorplate myself.
I don't have anything to bore the 34mm hole in the middle.
My colleague Erik made it on a cnc milling machine at work in his spare time.
The powerfeed bracket welded and machined. The bronze bushing is where the lever comes that engages the drive coupling.
My low-budget coupling.
Made out of a 22mm hexagon socket and a piece of 22mm hexagon steel.
Not very fancy, but easy to make and it works!
These parts come from the gearbox of a 50cc JLO engine.
Why not use them for the coupling?
The lever to engage the coupling. Made out of stainless steel.
All parts finished, painted and ready to be assembled.
Looks great, doesn't it?
Now that all the mechanical work is done, it's time to install all the controls, relais, fuses, power supplies and wiring.
Let us all pray my house won't burn down. When I'm working on electrical stuff, there are usually more sparks flying through the garage then when I'm welding.