Nice work. My drill press is so much worse quality but I think I'll try something like this. I've been using hole saws but the sizes are limited and the finish is terrible. Thanks for posting.
Hi! Thanks for watching. And when you do boring, always take at least two cuts, to compensate support bearing tolerances, shaft runout etc. Boring bar deflection at least in my setup seemed to be insignificant. And it's always best if you can remove the boring bar before taking accurate measurements. Also try to avoid too light cuts, just to avoid tool wandering.
@@GarageOfTool since you can boar now, I suggest building a drill press specifically for boaring. This way, you don't have to waste time switching back and forth between boaring bar and drill bits. I had this idea a year ago but I don't own a lathe nor a mill so it remained just an idea .. glad to see you turn it into reality in this great video.
Hi! If talking about spindle bearings, deep groove bearings will work fine even in a milling machine, as long as they are preloaded sufficiently. But I replaced the lower spindle bearing of this drill with angular contact type, since there is only "plain" bearing at the top and that won't allow high preload. Orginally this lower spindle bearing was using ball thrust bearing with bronze sleeve supporting side forces.
bearing in table. wonderful solution, vertical lathe , I need to cut a 70mm hole for a pillar drill tool tray. Unfortunately no hole in table , will have to hang the bearing and the job over the side.
Hi! Just use cold drawn steel bar for the shaft, those are typically straight enough for this kind of boring. I also have a boring head setup for this drill and now that I've replaced the spindle bearings I think it would also work fine and would be easier to use.
Hi! I think my chatter with that boring head was caused mainly by the old plain side bearings in the spindle. I've replaced those with angular contact bearing and now it's basically a milling machine spindle. And I was very suprised that bearing replacement reduced also the drill chatter a lot, despite that drill is kind of self supporting.
@@GarageOfTool Interesting to know!, I thought the chatter might of had something to do with the long spindle stick out that some industrial drill presses have, and the spindle actually deflecting because of the stick out. Even with very light cuts I was getting chatter I'll look into swapping out bearings. Thanks
I like the drawbar ideas :-) nice job
Very nice idea
Good work! man, it was a great idea and something we can learn from.
Who built your old school drill press sir, thanks
Hi! It was made by Valmet and it was originally used in ship industry
Nice work. My drill press is so much worse quality but I think I'll try something like this. I've been using hole saws but the sizes are limited and the finish is terrible. Thanks for posting.
Hi! Thanks for watching. And when you do boring, always take at least two cuts, to compensate support bearing tolerances, shaft runout etc. Boring bar deflection at least in my setup seemed to be insignificant. And it's always best if you can remove the boring bar before taking accurate measurements. Also try to avoid too light cuts, just to avoid tool wandering.
@@GarageOfTool since you can boar now, I suggest building a drill press specifically for boaring. This way, you don't have to waste time switching back and forth between boaring bar and drill bits. I had this idea a year ago but I don't own a lathe nor a mill so it remained just an idea .. glad to see you turn it into reality in this great video.
any difference between angular contact bearings and the deep groove radial bearings??in terms of rigidity / vibration??
Hi! If talking about spindle bearings, deep groove bearings will work fine even in a milling machine, as long as they are preloaded sufficiently. But I replaced the lower spindle bearing of this drill with angular contact type, since there is only "plain" bearing at the top and that won't allow high preload. Orginally this lower spindle bearing was using ball thrust bearing with bronze sleeve supporting side forces.
bearing in table. wonderful solution, vertical lathe , I need to cut a 70mm hole for a pillar drill tool tray. Unfortunately no hole in table , will have to hang the bearing and the job over the side.
Hi! Just use cold drawn steel bar for the shaft, those are typically straight enough for this kind of boring. I also have a boring head setup for this drill and now that I've replaced the spindle bearings I think it would also work fine and would be easier to use.
I tried a 2" boring head in my Clausing 20" drill press. It had the exact same problem, lots of chatter.
Hi! I think my chatter with that boring head was caused mainly by the old plain side bearings in the spindle. I've replaced those with angular contact bearing and now it's basically a milling machine spindle. And I was very suprised that bearing replacement reduced also the drill chatter a lot, despite that drill is kind of self supporting.
@@GarageOfTool Interesting to know!, I thought the chatter might of had something to do with the long spindle stick out that some industrial drill presses have, and the spindle actually deflecting because of the stick out. Even with very light cuts I was getting chatter I'll look into swapping out bearings. Thanks
Супер! Браво маэстро!
Nice job
Geo