Mike Hill
Cast Iron
- Joined
- Aug 28, 2004
- Location
- upper michigan
Hi all I have a 4hp series II Bridgeport that I bought several years ago, I rebuilt the head last year all I have left to do is grind the spindle taper then it will be a usable machine. The spindle didnt have the drive keys in it when I got it and it looks like the taper took a pounding because of it.
So my plan goes like this, I set up a sine bar on the table with the proper blocks under it for a 3 1/2 to a foot taper, brought the quill all the way down to the sine bar then used a presision square to tilt the head along the x axis till it was square to the sine bar locked the head down at that point.
Then I removed the internal grinding spindle from my RO grinder and mounted it to a block on the table so it is vertical.
After all that my hope is to run the grinder up into the taper on the side of the taper that is now vertical using the power knee on the machine take some light grinds and blue up a holder see how it fits, if its off tilt the head till it blues up correctly.
Am I missing anything, is there a better way?
Thanks Mike
So my plan goes like this, I set up a sine bar on the table with the proper blocks under it for a 3 1/2 to a foot taper, brought the quill all the way down to the sine bar then used a presision square to tilt the head along the x axis till it was square to the sine bar locked the head down at that point.
Then I removed the internal grinding spindle from my RO grinder and mounted it to a block on the table so it is vertical.
After all that my hope is to run the grinder up into the taper on the side of the taper that is now vertical using the power knee on the machine take some light grinds and blue up a holder see how it fits, if its off tilt the head till it blues up correctly.
Am I missing anything, is there a better way?
Thanks Mike