I recently purchased a new (used) Hurco SM1. This is my first CNC machine of any kind although I have a fair amount of time on a manual Bridgeport. The machine appears to me in good condition and was running when the previous owner unhooked it less than a year ago. I have already transported the machine to my shop and run electrical and air lines to it. The machine and computer start up and I'm able to jog around manually in X,Y, and Z. I'm also able to load a program from a PC to the machine using the RS232 port and a free DNC program. After looking through the manuals and documentation, this machine appears to have been upgraded in 2005 with new servo amps. I'm not sure if the servo motors themselves were also replaced...
Now for the bad:
When I started the spindle, it ran for a few minutes and sounded a little noisy but not too bad. Then I loaded a program and ran it just "cutting air" and the spindle motor started to smoke... I immediately shut it down but I'm pretty sure the motor is toasted.
1) Any thoughts on this? I'm planning to just have the motor rebuilt although I'd like to verify that I didn't cause it to avoid it happening again. I am using a rotart phase converter but I use it for several other machines and have never had a problem with it...
2) The servos also seem "jumpy" and they move on their own - not too much, but I'm guessing .050-.060. It seems like maybe they need tuned?
3) When I did have the spindle running, I was unable to reverse the direction (for use in back gear). In the manual, it said I can use Data Block 0 but I'm unable to access it.
I'm sure I'll have many more questions but I appreciate any help I can get. I should also mention that the upgrades in 2005 were done by Midwest CNC - they are local to me in Indianapolis so I'm able to hire them if necessary. I'd just like to make sure I'm not missing something obvious in the meantime.
I should also mention that I'm planning to use this mill for prototyping / hobby work. I already use Fusion 360 for my CAD work and I'm learning how to use the CAM now. Is anyone else using Fusion 360 for this era of Hurco? I'm assuming it doesn't have DNC capability so I'm planning to use another program to transfer to the Hurco...
Thanks
- Phil