2016-07-05 9:34 GMT-03:00 Rick Lair <[email protected]>: > I have been having a problem on another one of our turning centers where > the x axis will "twitch", for lack of a better word, at random times > while moving down ( slant bed, back tool lathe). I have checked all > couplings between the encoder and ball screw, checked the synchronous > belt tension between the ball screw and the servo, I just replaced the > encoder, and I still cannot figure out what my be causing this. It is > not every time it is moving, and it is not in the same place every time > when it does happen. Could there be something funky going on in the > servo? I was thinking if I had a storage oscilloscope I could what the > motor voltage to see what that is doing, but I don't have one of those, > but have flirted with buying one in the past. > > Any thoughts as to what would cause this? >
Hello Rick. Not an expert on this list but, could it be this is is happening because you have the gibs of the joint a little loose? Since it's only happening while moving down it's more than a possibility. Off course this could only affect the movement of the joint no more than the backlash of the screw, in fact if you have this problem with the gibs it's time to check also the backlash too. -- *Leonardo Marsaglia*. ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
