aametalmaster Posted December 31, 2007 Share Posted December 31, 2007 Here is a simple project i finally finished. A boring head for my SB lathe in the correct .602 taper for the spindle. Don't know if i will use it but it was fun to make. And it was FREE, the boring head was a gift i couldn't use...Bob 1st pic. Turning .602 South Bend Lathe taper. 2nd pic. Arbors made, i made extra since i was setup. 3rd pic. Threaded 1 1/2-18 for boring head. 4th pic. Boring head installed. 5th pic. Parts to use an arbor. Shaft/bushing/nut holds it inside the spindle.southbend10k : SouthBendLathe10k and lathe projects. for more pics. Quote Link to comment Share on other sites More sharing options...
hdwarner Posted January 1, 2008 Share Posted January 1, 2008 First Bob If You Ever Get A Gift Again You Cant Use , Please Regift To Chuck. I Don't Mind Regifts At All Second That Is A Nice Idea Using A Drawbar , It Is Nice And Rigid That Way. Third Lots Of Things You Can Do With This Set Up, Line Boring Holes For Precision, Boring Small Engine Cylinders, Trepanning A Plate, Fly Cutting, Etc Quote Link to comment Share on other sites More sharing options...
aametalmaster Posted January 1, 2008 Author Share Posted January 1, 2008 Thanks for the ideas Chuck. I had installed a few years back a bigger cross slide with tee slots so i could do other jobs that i could clamp on the cross slide. Like this 45 degree milling of a slot i could not do any other way because i don't have a mill. This is the arm for my home made taper attachment being milled...Bob Quote Link to comment Share on other sites More sharing options...
hdwarner Posted January 1, 2008 Share Posted January 1, 2008 HEY BOB YOU DO PRETTY WELL WITHOUT A MILL , i have been a machinist for 25 years and i never tire of inovative ideas and fixtures for machine tools. thats where the money is made , take nothing and make something. I REALLY APPRECIATE YOUR EFFORTS . thats my bag take a 50 dollar an hour job and turn it into a 150 dollar an hour job. do you have any other posts of pics. CHUCK Quote Link to comment Share on other sites More sharing options...
aametalmaster Posted January 1, 2008 Author Share Posted January 1, 2008 Chuck, everyone, I have about a thousand pics of setups i have done. Prob is they are scattered all over the net in photo albums i have. I have talked to Glenn about making blueprints and i will start some with my zillion projects from welding/ ornamental iron/ maching and some others. I used my boring head today making a clearance cut on my tool post to clear the live center that always seems to hit at the wrong time...Bob Pic #1 ALWAYS Watch the back side away from the cut, you don't want to hit anything. Turn it by hand to check for clearance. Pic #2 Cutting in backgear with the spindle running slow. Pic #3 Clearance cut done, perfect fit. Pic #4 Looks like a beaver chewed it out but it will work. Pic #5 Wrench and spindle nose protector pushing the boring head out of the taper. The taperered arbor locks itself pretty good into the tapered spindle ID. Quote Link to comment Share on other sites More sharing options...
tiptop Posted March 23, 2009 Share Posted March 23, 2009 aametalmaster I have never heard of a south bend taper or a .602. It looks like a Morse #3 to me. Interesting way of setting up a boring head I will have to admit. I use them in my millers but have not tried in any of my lathes yet. Jay Quote Link to comment Share on other sites More sharing options...
aametalmaster Posted March 23, 2009 Author Share Posted March 23, 2009 Here is a little info about the oddball spindle taper. A #3 MT will fit but it sticks out too far...Bob An interesting point concerns the spindle nose: this uses what appears to be a short No. 5 Morse taper but is actually specified as a proprietary fitting with the same taper rate as a No. 3 Morse (0.602" per foot) but with a "gauge line" of 1.629" diameter. The "proper" No. 5 taper has a rate of 0.6315" per foot, and a gauge line of 1.748" diameter. Although calculations show that a standard (but shortened) No. 5 Morse taper 2.5-inches long would be approximately 0.006" loose at the smaller-diameter end in practice a No. 5 Morse does appear fit - though there is always the chance that your lathe may be different. The correct sleeve, to South Bend's specification, can be obtained from Scot Logan at lathe.com Quote Link to comment Share on other sites More sharing options...
tiptop Posted March 24, 2009 Share Posted March 24, 2009 It seems to me now that you mention explain it, I have heard of short tapers. I can't remember where, I thought it was in reference of a brit lathe though. I didn't realize SB used them. I have had three SB's and all were morse. This is interesting, Jay Quote Link to comment Share on other sites More sharing options...
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