Well I unclamped the ball nuts and checked them they spun OK, but some saw dust was covering them. I think it might have been the spring I use to separate the 2 ball nuts that might have bound them. They spun fine on their own. I didn't take them off as that's a huge PITA. When everything's together I can turn it by hand of course and it seems as though it's like it was when I first built it. The stepper definately doesnt' run as fast as when I first built it. I originally has it set at 48ipm, then over that past day or so I've lowered it to 38ipm until it stopped making the crunching sound. It is direct drive. I wonder if I should up my power?
Question: when I add more voltage does that increase the torque thorugh all rpm ranges? Right now I'm running it at 24V but can go as high as 80V with the drivers I'm using, All though I'm very gun shy as when I tried with my last set of drivers to up the voltage they all blew, NOT my fault I think the drivers were bad from the begining.
I've got all my other bits dialed in as far as IPM, I use bits as small as .0156". The particular bit I'm talking about is a 1/2" bit, so I'll start at 18,000 or so. Thanks Ger.  |