dparker
In Rembrance 8/2021
- Joined
- Aug 24, 2007
- Messages
- 218
- Reaction score
- 5
Hello All: I hope you all had a Merry Christmas with friends and family!
Here is a simple mounting fixture for holding something with a center hole. On the lathe it might be a flywheel for a motor that needs just a little more work. I believe I saw this several years ago in HSM and used it to finish one of my engine's flywheels.
Turn a piece of scrap to a diameter that would be a snug fit in the bore, and then measure the diameter of a roll pin or roller bearing needle and file or mill a flat just slightly deeper on the fixture diameter just slightly longer than the pin. Slide the "flywheel" over the shaft and then slip the roll pin in the open space and wring the part in the direction that will tighten the roll pin to resist the torque of the cutting tool. With the pin parallel with the bore the part will accept quite a good amount of torque and is easily removed when done machining the part. A shoulder could be used on the fixture to help resist the part moving down the shaft if desired.
For these pictures I used a oilite bearing because it was handy but still should show the idea. I would think light cuts would be in order here, this has helped me in the past and I will most likely use it again--fast and easy.
I hope this helps somebody as I have not seen this mentioned anywhere I have read for several years.
Don, Now have a Happy and Healthy New Year!
Here is a simple mounting fixture for holding something with a center hole. On the lathe it might be a flywheel for a motor that needs just a little more work. I believe I saw this several years ago in HSM and used it to finish one of my engine's flywheels.
Turn a piece of scrap to a diameter that would be a snug fit in the bore, and then measure the diameter of a roll pin or roller bearing needle and file or mill a flat just slightly deeper on the fixture diameter just slightly longer than the pin. Slide the "flywheel" over the shaft and then slip the roll pin in the open space and wring the part in the direction that will tighten the roll pin to resist the torque of the cutting tool. With the pin parallel with the bore the part will accept quite a good amount of torque and is easily removed when done machining the part. A shoulder could be used on the fixture to help resist the part moving down the shaft if desired.
For these pictures I used a oilite bearing because it was handy but still should show the idea. I would think light cuts would be in order here, this has helped me in the past and I will most likely use it again--fast and easy.
I hope this helps somebody as I have not seen this mentioned anywhere I have read for several years.
Don, Now have a Happy and Healthy New Year!