Thread Cutting on the Hardinge Lathe

[TomG]

I was making some threaded collars tonight and one of the steps was to cut a 3/4-14 internal thread. It's so much different than cutting threads on other lathes that I thought you might enjoy seeing the process.

Tom

[stevec]

That's pretty slick Tom!
But with my right hand -left hand spasticity I'd have a crash well before the thread was to depth.

[PixMan]

I've used the Hardinge HLV-H toolroom lathes and their super-slick threading before. I'd like to believe that there's nothing easier for manual lathe threading, but I've never run a Monarch 10EE. I believe both machines use a dog clutch mechanism. I do like the HLV-H a lot though, it's a well thought out machine, high quality construction. Robust cuts aren't going to happen, bu for the intended purpose it's quite a nice machine.

Nice video, thanks for putting it together and posting it.

[TomG]

One other feature I forgot to mention is the auto stop. You can set it to stop the tool when threading to a shoulder and it will stop within thousandths every time (even with a spastic hand). It's a bit scary to use the first time, but once you get over the initial terror of threading full speed to a shoulder or the chuck hands off, you'll wonder how you ever got along without it.

Tom

[Mayhem]

Ken pointed out the retracting lever when we visited the L.S. Starrett plant in Athol, MA and I thought it was a cool feature. This is the first time I have seen it in use and I am really glad you took the time to put the video up Tom. Of course, I have seen that particular lathe in person but both Tom and I were enjoying one of his home brews, so it never got fired up.

[DaveH]

Tom,
Really slick and quick
Nicely shown

DaveH

[Brian]

(03-27-2013, 01:09 PM)DaveH Wrote: Tom,
Really slick and quick
Nicely shown

DaveH

+ 2 tom Oh for a lathe of that quality

Perhaps I could say

Brian

[doubleboost]

Hi
Tom
Nice video clip
I have never seen a top slide like that
Top quality lathe
John

[EdK]

Tom,

Thanks for the tip about cutting steel threads by advancing the compound versus cutting Delrin threads using the cross slide. I did not know that about Delrin but it makes good sense.

Ed

[Hopefuldave]

Nice... I have a quick-withdraw too on my Holbrook (on the cross-slide, which has two sets of dovetails so taper attachment and power cross-feed are independent), but for no readily apparent reason they left out leadscrew reverse on the model C... All the other Holbrooks got it :( I have to rely on the VFD and transmission brake to stop when threading, Dammit!

I have a cunning plan to add it, it's getting the stops to work (without a horribly complicated mechanism) on threading that has me stumped...

Dave H. (the other one)