On 09/24/2016 01:58 PM, Gene Heskett wrote: > 43/25.4 to get inches = 1.6929etc * pi *rpms, so its 3.63" > per rev, and 800 revs is then 2900 SFM. So I should be > turning at least 1200-1300 to dup that. Right? Well, 800 RPM is not insanely slow for that diameter. I didn't realize this was lathe work. But, you definitely can spin faster, and nothing wrong with 4000 SFPM. > The question then is what the heck do I do with all that > curly swarf? Making the pulley hub, and boring the pulley, > (its all together and looks like it will work, well > aligned now) made at least a bushel of gnarly swarf I > carried to the bin in sometimes soccer ball gobs. And the > lathe is still a mess. I'll have to sweep before its clean > enough not to clog up the vacuum. When I make a lot of aluminum chips, I can turn them in for recycling. I used to run them through an antique meat grinder, but that was too much work. If the chips won't mash down, you can snip them a little with tin snips to make them compact better. A proper chip breaker on the cutter may make them crumble into shorter pieces. > Interesting swarf story to tell this morning. The wire > joints for the x motor, located where the wire comes out > of the cable/chain, so its basically on top of the motor, > and the cable is connected to the motor wires with little > grey wire nuts. A lot of the swarf went off the back of > the toolbox, crossing the area where those nuts are > sticking up. Your are guessing by now where this is going. > At one point it must have shorted, and about 4" of that > swarf lit up white hot and exploded like a fuse, nice > attention getting pop. The 2M542 driver protected itself > well, the motor never missed a step! I either need to put > that in a small box, or at least fill the back of the nuts > with Go-2. Cheers, Gene Heskett Well, I had swarf get in the motor once or twice on my old lathe, but very lucky that didn't blow up your driver.
Jon ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
