K o D's Korner

[KeeponDragon]

Oh look...apprentice marks...

That gear came out of the speed change gizmo...the pin in the back for the gear pack engagement...not even locked in to place...

This tumbler looks like it was half engaged for a while
There's 2 of them on this unit...both in similar condition

Equipment mechanic tell-tale sign...

I was successful with getting it wired up and running...VFD works good
The new cone drive belt from the local distributor works like a charm
But upon light up, the gear train was making some pretty hellacious noise...
So I started looking deeper...
Lots of loose fasteners...some chipped teeth...
Not surprised...it IS 100 afterall...
If anyone has gears in a box collecting dust...lemme know lol
The gear pack for the lead screw has 3 damaged gears in it as well...
So I guess it makes sense why the previous owner made the comment about scrapping it....he just didn't want to put in the effort to repair it...
It can still turn parts though
And I'm ok with that...

 

[KeeponDragon]

Just wanted to share my latest personal achievement...I don't see any way without digital controls to cut threads...but I'm ok with that...at least now I'm not hand cranking that massive apron

 

[Susquatch]

I don't see any way without digital controls to cut threads...

Post some more photos of the gearing and headstock. Maybe it's just not obvious. Who knows what the machine team on here might find for you!

 

[Janger]

With 2 RPM meters, one on the spindle and one on the power feed, and variable speed feed control you could hit a RPM required for a thread. Then add a thead dial to your power feed gear train and you could repeatedly cut threads.

 

[Susquatch]

With 2 RPM meters, one on the spindle and one on the power feed, and variable speed feed control you could hit a RPM required for a thread. Then add a thead dial to your power feed gear train and you could repeatedly cut threads.

I don't think so John. How do you resync the shafts after the first pass....... I don't think a thread dial would resync them. So unless you can cut the whole thread in one pass, I think you are cooked.

 

[KeeponDragon]

I don't think so John. How do you resync the shafts after the first pass....... I don't think a thread dial would resync them. So unless you can cut the whole thread in one pass, I think you are cooked.

I think the challenges of set up would outweigh the benefit of cutting threads on this old girl.
Getting the timing just right would be a real PITA...

honestly gents, I'm just pleased my idea worked. I'm quite happy to turn parts and not have to hand crank that sucker...

Oh! I did try some passes using the power cross-feed in the apron....works great!
I admit I may have put a torture test to that gear headed drive motor, repeatedly making a cut, stopping the PCF, reversing it out at a higher feed rate, adding some depth of cut, and heading back in to make another pass...I kept that up for about 10 mins, playing with the feed rate to see how the finish would turn out.
That motor, and my setup, didn't complain once. The motor did get warm, but not as though it was too hot to touch.

So overall, I'm happy.