04-13-2013, 08:59 AM
OK good news and bad news. Found the camera so going to bore you with the end of this post.
We left the rotor with the whole end welded and the weld drying.
Now need to get a turned surface to get a steady on so the end can be single point bored to accept the revolting centre.
So this is an attachment i have found invaluable, a revolving 4 jaw chuck.
Just a standard chuck with a bearing mounted in the back of the chuck and another in the bossed backplate running on a morse arbor.
Adjusted so the shaft runs true and then the original bearing surface is cleaned up but left oversize by about 1mm or 40 thou.
Now swap to a steady and rough the shaft diameter out.
Because at this point I can't use the tail centre, I prefer to wait and see how the weld cleans up in case it needs a bit of filling in and if it's all one sided it can pull the shaft off.
because of this but to provide a bit of support and stiffening I had pushed an old ball race onto the shaft end using the revolving centre.
Once it's all cleaned up and roughed to with 1mm or 40 thou then the end can be single pointed.
Once this is cleaned up everything should be running true to each other and the steady can be discarded with to be replaced by a revolving centre.
Unfortunately it was at this point I misplaced the camera [ I blame the aliens ] so the final turning to size and cutting anew keyway was missed.
We left the rotor with the whole end welded and the weld drying.
Now need to get a turned surface to get a steady on so the end can be single point bored to accept the revolting centre.
So this is an attachment i have found invaluable, a revolving 4 jaw chuck.
Just a standard chuck with a bearing mounted in the back of the chuck and another in the bossed backplate running on a morse arbor.
Adjusted so the shaft runs true and then the original bearing surface is cleaned up but left oversize by about 1mm or 40 thou.
Now swap to a steady and rough the shaft diameter out.
Because at this point I can't use the tail centre, I prefer to wait and see how the weld cleans up in case it needs a bit of filling in and if it's all one sided it can pull the shaft off.
because of this but to provide a bit of support and stiffening I had pushed an old ball race onto the shaft end using the revolving centre.
Once it's all cleaned up and roughed to with 1mm or 40 thou then the end can be single pointed.
Once this is cleaned up everything should be running true to each other and the steady can be discarded with to be replaced by a revolving centre.
Unfortunately it was at this point I misplaced the camera [ I blame the aliens ] so the final turning to size and cutting anew keyway was missed.
John S., Nottingham, England.