Lathe operation, feed rod vs leadscrew

[rock_breaker]

i Have an Enco Model 510-2585, 13x40 lathe and like yours I don't think it has any relatives. Around the corner from the the quick change gear box on the change gears cover is a chart that has 2 tables. 1 for MM and the other for ZOLL (IMPERIAL?) Each lettered line (A-E) has a coarse cut image which I take to be be threads and a fine image which I believe indicates distance moved per turn of the spindle. It does have a threading chart on the quick change gear box which I use quite heavily. except for threading I run it a great deal of time by SOMP, taking light cuts and slow feed rate.

It does have half nuts and the machining functions are by a separate lever that can be engaged with the spindle turning, up for longitudinal down for cross feed.

I do like running it especially when real precise work is not required. Hopefully I will learn to do precise work on it.

Have a good day
Ray

 

[RJSakowski]

This was my take on the process. You have to adapt it to your machine, but some of the stuff in there might be useful for you. I don't recall how RJ did it off hand, I'm sure he'll mention it later.

Electronic Lead Screw

I'm going to attempt to adapt clough42's ELS to my PM1127. I figure I might as well do it publicly in case it ends up being useful for someone else. I have most of the parts now, and have the electronics and servo running on the bench. The first thing I decided to mess with is the rotary...

www.hobby-machinist.com

I used Clough42's board and firmware. My setup was slightly different than Clough's as I used a different stepper motor. As I recall, most of the build details were given in this thread:

electronic lead screw

I'm wondering what is state of the art for electronic lead screws these days and if anyone has advise based on implementing on on an import lathe?

www.hobby-machinist.com

The setup has performed well over the past two years. The only feature that I would like to see added is the ability to enter a custom thread pitch from the control panel. (I haven't followed Clough's work recently so that may have been done already .)

@greenail, the OP of the above thread, is working on a more sophisticated electronic lead screwthat looks ineteresting.