02-01-2020, 08:13 AM
(02-01-2020, 07:15 AM)Pete O Wrote: To explain what may or may not be obvious, the shaft is free to slide back and forth through the four flange-mount bearings, which allows for the feed. The one pillow-block bearing is fixed to the shaft with grub screws, one of which is located in a hole in the shaft to provide a positive position.
The pillow block bearing is moved by a long rod (cobbled together from offcuts), the other end of which is in the lathe toolpost so the lathe provides both rotation and feed.
That is brilliant Pete.
Brian Block recently did a video on line-boring a John Deer front axle using a similar setup with the bearing block for support on the far end of his boring bar. His biggest advantage though is having a horizontal boring mill to supply the rotation and feed. Cheater....
Willie