Ed Kennell 47,509 #1 Posted 2 hours ago Much quicker than my vee blocks, dial indicator, and BFH. https://www.facebook.com/reel/1751731073081812 1 Share this post Link to post Share on other sites
ri702bill 13,144 #2 Posted 2 hours ago (edited) I worked for a local Company back in the mid 1980's that manufactured Build-to-order Deep Hole Gundrilling Machines. I spent several weeks in Kokomo Indiana nstalling & training folks how to use & maintain their new transmission shaft Gundrills. Our Machines drilled a 5MM oil hole about 75 MM deep. These machines were part of dedicated Workcells - barstock was fed in one end, finished machined parts out the other. They had an Italian Machine there that did the same straightening thing - rotate the part to locate the highest runout spot, calculate the force & apply it where needed, repeat twice more. If the part was not straight within spec after the third try, it was scrapped. Quick & efficient. The step before the Gundrill was to rollform the splines onto the shaft - one pass revolving the shaft 2 or 3 times under 100 tons of pressure. That process generated NO chips as the metal was upset into shape... Edited 2 hours ago by ri702bill 2 Share this post Link to post Share on other sites
