Variator for small lathe

[BillTodd]

Not much of an update....

After adjusting the backlash and topping up the oil (lucky we had some old tellus at work for some other machine ) ,
I mounted the Kopp and motor on a U chassis to raise it and the belt to clear the headstock.

Nothing is bolted down yet as I may try to hifde the enormous power train under the bench top.

[BillTodd]

Small update:

I have a small pile of 4040 extrusion with which I can make a stand for the lathe and motor.

Just a mock up ATM to check height

[BillTodd]

I've settled on the basic shape.

The black motor plate determines the 600mm width of the frame.   . I have to add a counter shaft and pulleys to get the drive up to the headstock.

[philf]

Bill, Good to see the Kopp being put to good use. Phil.

[BillTodd]

Yes  Phil, it's taken a while 

[BillTodd]

Fitted the top , feet and added rubber fillets to hold the panels in.

[BillTodd]

A bit more fiddling today. I've wired a control box with no-volt switch and psu for the speed adjustment motor.

I going to have to pull the kopp apart and clean out some debris, I noticed that since changing orientation,it has developed a click (the adjustment worm bearing show noticeable wear and I suspect crap from this has got into the mechanism. Changing oil didn't shift it.) And I have a oil leak from the speed adjustment port.

It'll be easier to make a motor driven speed change with it on the bench

[philf]

A bit more fiddling today. I've wired a control box with no-volt switch and psu for the speed adjustment motor.

I going to have to pull the kopp apart and clean out some debris, I noticed that since changing orientation,it has developed a click (the adjustment worm bearing show noticeable wear and I suspect crap from this has got into the mechanism. Changing oil didn't shift it.) And I have a oil leak from the speed adjustment port.

It'll be easier to make a motor driven speed change with it on the bench

Bill, I still have another and some spares if you need them. Phil. (I did have a flexible drive for the speed change knob so you could operate it remotely but don't know where it is - or even if I still have it.)

[BillTodd]

Cheers Phil,

I'm sure it'll only need a clean I was fine until I ran it on its side. When I swapped the bungs the magnetic one was quite furry , so there is sludge in there.

Vill

[BillTodd]

Well, that was instructive. 


1, they are not difficult to take apart.

2, the largest piece of debris was a flake of paint (thst probably fell in when I opened it).

3, there is no perceivable wear , it's like new inside.

4, they are fiddly f####rs to put back together!

Still , I have fixed the leak


And decided the click is the motor coupling, which I may have to change along with the motor, as it lacks starting torque for the highest speeds.

[philf]

Good news Bill! 👍