Anyone assembling the Clough42 Electronic Leadscrew system? I have questions...

[Sprint77]

I’m sure I’ll have many, many questions, but first and foremost is figuring out how much servo motor I will need.

Here is the open-source project I’m talking about:

Lathe Electronic Leadscrew

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James is driving the combination feed/leadscrew of his Grizzly G0602 benchtop lathe (10x22”, 1hp, 432 lb. shipping weight) using a Nema23 hybrid servo of 282 oz/in, about 2 N-m.

My lathe is 70s vintage, unknown maker, 12x36”, 3hp, about 1500 lb. Obviously I need a bigger servo, but I really have no idea how to go about calculating the torque I need. For now, my only idea has been to search for a CNC conversion kit for a similar lathe and see what they spec.

Picture below shows the condition of the QCGB and the reason I’m planning this conversion:

I am working on building a Clough42 ELS also for a logan 200 lathe

 

[Lotus54]

I put one on my Precision Matthews 1030V - it is fantatic.
I used the same integrated servo that James used.
I don’t know anything about the Logan 200- but if similar size, I would think that would work.

 

[Sprint77]

Right now still ordering and getting all the parts in. I got the Clough42 board kit in friday . Got the Mouser order in for the other board and encoder in transit