Re: [CAD_CAM_EDM_DRO] Lathe Retrofit.. Threading?

Hi,

This subject is well covered by the TurboCNC list. If you join you will have
access to the files section where you should find a circuit diagram on how
to do threading pickup.

Basically it is just a light source and a pickup that goes high once a
revolution. TurboCNC takes care of the rest via a G-Code instruction.

Regards,

Terry

> Either way, I DEFINITELY want to be able to thread on it!
>
> I"m not at all clear on how exactly to get it to pick up the same spot on

sucessive passes

> of thread cutting.
>
> I've sort of gathered that some kind of encoder on the spindle is

needed... but I don't

> know what kind, and I don't know how to connect it to a controller (for

example, the

> Gecko stepper controllers).
>
> What kind of encoder are we talking about, and is there a standard way to

provide the

> controller (or computer) with the feedback needed to cut threads?
>
> Or should I retrofit my Mill-Drill first?