- Joined
- Oct 7, 2013
- Messages
- 305
Well, I have made all the shafts I will replace. I still need to cut keyways in two of them and an oil groove in another. I went ahead and replaced the shaft that holds the clutch gear. That gave me my first experience of threading. It has a 3/8X24 threaded end that threads into the handle that engages the clutch. Turned out well. Forgot to get a picture of it.
So far, in doing this lathe rebuild, I have had to do the following tasks on the South Bend lathe:
- Turning outside diameter
- Parting-off
- Chamfering
- Mandrel making and use
- screw threading
- Making bushings
- tool bit grinding
- Use of Palmgren milling attachment for drilling an angled oil hole in a shaft
On Monday I'll learn how to use a boring bar to turn down the inside diameter of the pulley gear bushings that go on the spindle. CouldnT find the right size bushings, so I ordered bushings with the right outside diameter and extra meat on the inside, so I can turn it down to fit the newly ground journal on the spindle. Turned out the bushings were about .007 too large on the outside diameter, so I had to turn a mandrel out of a piece of scrap aluminum I had (the only thing I had that was a large enough diameter). I slipped the bushings onto the mandrel and fixed them there with red loctite, then turned the outside diameter down .005, to make a press fit into the pulley gear. Learned a little idiosyncrasy of my South Bend lathe. The cross slide nut has enough wear that it is somewhat inconsistent in movement, and I can't rely on the mic collar for increments. One bushing came out to be a tight slip fit, instead of a press fit, so I'll have to set that one with bearing set. Here you see me turning off the last .002 off the outside diameter of one of the bushings.
Now, I have a question.
After fitting and installing the bushing for the worm, I cannot figure how this bushing get lubricated. There is no oil hole and nothing to drip oil onto it. I am considering drilling an oil hole where I can at least oil it manually occasionally. If any of you happen to have your apron off, would you please take a look at the worm and tell me how its bushing gets lubricated? It's possible there is supposed to be an oil hole or something that never got drilled at the factory.
I still need to by a small burr for my Dremel, so I can make oiling grooves in some of the longer bushings and also inside the apron compound gear.
Just waiting for one MCL-271 tumbler gear to be able to get things back together. I'm also watching for a cross slide screw in either NOS or excellent condition. I've already located a good nut.
Had a nice warm couple days, in which I was hoping to be able to paint some parts. Just ran out of day and energy.
It's all coming along, slowly, but surely. I'm sure enjoying it.
So far, in doing this lathe rebuild, I have had to do the following tasks on the South Bend lathe:
- Turning outside diameter
- Parting-off
- Chamfering
- Mandrel making and use
- screw threading
- Making bushings
- tool bit grinding
- Use of Palmgren milling attachment for drilling an angled oil hole in a shaft
On Monday I'll learn how to use a boring bar to turn down the inside diameter of the pulley gear bushings that go on the spindle. CouldnT find the right size bushings, so I ordered bushings with the right outside diameter and extra meat on the inside, so I can turn it down to fit the newly ground journal on the spindle. Turned out the bushings were about .007 too large on the outside diameter, so I had to turn a mandrel out of a piece of scrap aluminum I had (the only thing I had that was a large enough diameter). I slipped the bushings onto the mandrel and fixed them there with red loctite, then turned the outside diameter down .005, to make a press fit into the pulley gear. Learned a little idiosyncrasy of my South Bend lathe. The cross slide nut has enough wear that it is somewhat inconsistent in movement, and I can't rely on the mic collar for increments. One bushing came out to be a tight slip fit, instead of a press fit, so I'll have to set that one with bearing set. Here you see me turning off the last .002 off the outside diameter of one of the bushings.
Now, I have a question.
After fitting and installing the bushing for the worm, I cannot figure how this bushing get lubricated. There is no oil hole and nothing to drip oil onto it. I am considering drilling an oil hole where I can at least oil it manually occasionally. If any of you happen to have your apron off, would you please take a look at the worm and tell me how its bushing gets lubricated? It's possible there is supposed to be an oil hole or something that never got drilled at the factory.
I still need to by a small burr for my Dremel, so I can make oiling grooves in some of the longer bushings and also inside the apron compound gear.
Just waiting for one MCL-271 tumbler gear to be able to get things back together. I'm also watching for a cross slide screw in either NOS or excellent condition. I've already located a good nut.
Had a nice warm couple days, in which I was hoping to be able to paint some parts. Just ran out of day and energy.
It's all coming along, slowly, but surely. I'm sure enjoying it.
)
