Boring Gingery Head Stock

[horty]

Thanks a lot, your good at explaining.
I was talking to the machinist that was going to do the threading, he scribbled out how It should be done with the bearings.
I'm 100% with the way you say to do it, I have do doubts you have the done this before and have the knowledge..

He wont thread it for me unless its done his way,,, thats fine with me, there are alot of machinists around here.
Anyway,
I attached the the drawing which Is from his scribbling, hope its good enough to understand.

I'm still going to do it your way but just want your opinion on his way of doing things, I'm learning
from this and maybe it will help others.

And Thanks A lot Again...
Tim

 

[cjtoombs]

As for the shaft, that's fine, but I don't see how the bearings are restrained in the housing bore. If they are not, then the front bearings and shaft will move in the housing under thrust loads. In this setup, the bore is usually step bored so that be bearings are pressed against the step (in other words, teh step would take the place of the sleve shown in the drawing in black. That sleeve will need to be held in the housing some way or this setup won't work. Locktite would probably be sufficient, I would use the green Locktite.

 

[horty]

Your right, it would want to move around in there ...I'm going to do it your way anyway, But
I guess I forgot to tell you and even forgot to put it in the drawing is that the small end of the shaft on the outside
will have a thrust washer, 1 bellevue washers to keep very little pressure and a small pulley locked on that turns the lead screw,
and a small lock collar on the right of the that bearing, I re-measured my space in there and have more that .250 allowance, its closer to .500
so a collar should fit, but your way is simple and the correct way.
I would also need some step boring for the bearings and that would be tough for me without messing up the hole thing.
going to be tricky enough boring this out and keeping everything in order, for me anyway.

In your case I woudnt need that extra bearing, I think the machinist knows nothing about angular ball bearings, when I
mentioned that to him he got that dumb look on his face like a donkey.

Well, tomorrow will check other machine shops that will do that threading for me, the reason I picked donkey face was he
could get at it right away, but I dont mind waiting for 2 weeks at some other shop, he does kinda irritate me some.

I'll Be back...

Thanks Again,
Tim

 

[horty]

and a small lock collar on the right of the that bearing,
(I mean Left of the bearing.) in previous post

Yuk, the confusion in my old brain..Must be the new arthritis drugs I'm on, hell of a time thinking lately..

 

[horty]

What a difference a day makes.. Was all goofed up on some of my drugs, that wasn't good, feeling good today so on with the project.. found a machinist today that will machine the spindle and thread it, I'm afraid that with the worn spindle bushing I have in the lathe now could cause me some problems..
Spindle will be done in a week or two..

Been getting things together for boring the head stock..This will be the fun part...
Back in a week or so.
Tim

 

[horty]

Finally have the head spindle installed, sure makes a difference with those new bearings.

No Chattering, No Flopping Around, And Nice Not To Have All That Oil Dripping All Over,

Cost me $217.50 to have the spindle machined, I furnished the 4140, he charges $100/Hr. took him alittle over 2 hours, it would have taken me forever even if I could cut threads, so for the price I'm very happy..forgot to take a pic of it but it fit right in the way it should have.

I took some shaky videos of the setup and boring but need to edit them alittle, no need to watch nothing.

Once I figure out how to do that I'll post them for you..


Might start makeing the back gears some time this winter, But I ordered the Back Gear Book When I Ordered The Lathe Book,
For The Life Of Me I Can Not Find It, Would Anyone Be Willing To Share A Copy Of The Book??

Thanks,
Tim

 

[horty]

Hi, heres a few pictures of the old spindle, the way I set up for boring and aligning boring bar with old spindle bearings.
I'll post some video as soon as I figure out how to resize them, got new computer so learning all over again..

By turning lead screw it moves the drill forward the is mounted on the cross slide loosely as not to strain the boring bar.
as the new boring bar slides in the mounted bearing bushings, I have a speed control hooked to the drill to control the the rpm, (that will show in video)

I will post more tomorrow,
Tim

 

[horty]

Heres a few more pics and some videos..
Thanks very much to cjtoombs, it was nice to have some help with this project and not give up on an old man,with out you helping I would still be staring at that old spindle..
Thanks All,
Tim


View attachment 1.mp4












View attachment 3.mp4



















View attachment Thru Bore 2.mp4






















Pic of new faceplate casting with new 1 1/8" nut cast in the middle.

 

[cjtoombs]

No problem, glad it turned out well. I've always been interested in the Gingery machines. I've read all the books more than once. I think even if you never plan to build them they are a very interesting and educational read. They provided a lot of innovative solutions to a problem that badly needed solving at the time. While commercial machines are now readily available for decent prices, for folks who don't want to spend a lot of money on this hobby or just want the experience, I think they are a great alternative.

 

[horty]

Your Right, I was about to spend $4000.00 on a lathe years ago, but what then, have a lathe that is used about 6 hours a month, so came the gingery lathe.
Was fun to build, and learned alot about how things were done years ago, and have nothing but time on my hands, so always coming up with something to build or cast...need a reason to get up in the morning.

Surprised that no one else has commented on it, I really don't mind but I wonder why, maybe I did or said something wrong on this forum..
I might have, had head injury few years back and do act and say wrong things at the wrong time and don't even realize it.
If I offended many on this site, I apologize.
Oh Well life goes on...
Tim