Okuma ESV4020 Tool Change Hang Up
While machining some parts this morning the machine tried to tool change, it placed the tool in the magazine, and refused to move after. It would clamp and unclamp, but that's it. I hit reset, and managed to get the spindle up (leaving the tool in the magazine).
Upon inspection I found the alignment key was bent upwards. I replaced it with an alignment key from another pot and the tool sits perfectly again.
My problem now is I can't get the magazine to retract or index. It is currently stuck open, under the spindle. I have tried using Interlock Release and Advancing, Reversing steps and restarting cycles, but nothing works. At the moment the ATC says it's on SEQ 010 and won't move back to SEQ 001.
If anyone can help, please post. I can give more details if you need, just ask (I'm not sure what else is needed). I'm not really getting alarms (unless I try to move X and Y axis).
Here's a picture of the machine:
http://img2.classistatic.com/cps/po/...0982gb_27.jpeg
Here's a picture of the controller:
http://www.exapro.com/product/2011/0...10513490_3.jpg
And to give you an idea of what the machine looks like right now, pause this video at 0:07-0:08 after the tool is released from the spindle and before the next tool is loaded:
[ame="http://www.youtube.com/watch?v=MJCtrwiKsDI&feature=related"]Tool Change - YouTube[/ame]
Thanks,
William
Re: Okuma ESV4020 Tool Change Hang Up
Extremely useful information. This saved me yesterday when Gosiger couldn't. Thanks for posting.
Re: Okuma ESV4020 Tool Change Hang Up
hello sasamilojkovic, when i experienced the case of not being able to continue during an atc sequence, it was because, after manual intervention for changing the tool, the tool was not in proper position, and the hidraulic unit alarmed out, because it was pumping for too much time; as a result, a protection switch, inside the electrical cabinet, needed to be pushed back
but, about your case, i am sorry, i can not help / kindly :)
Re: Okuma ESV4020 Tool Change Hang Up
I'm no stranger to resetting the ATC on these machines (operator accidentally hits the E-stop during a tool change, etc), so I'm familiar with going into the parameters and walking it through.
But all of a sudden, my machine gets always stuck on sequence 5, (magazine advances to spindle)
After the 3-minute alarm comes up, the diagnostic screen says "15703 Magazine Advance LS is not ON"
So my guess is that either the limit switch has gone bad, or it somehow lost its position. Any thoughts?
Re: Okuma ESV4020 Tool Change Hang Up
hi, i found this inside manuals : something seems to be stucked, or reacting too slow; i am sorry, i can't help any futher / kindly :)
Code:
Spindle tool outside cylinder unclamp LS is not OFF.
Spindle tool UNCLAMP LS is not OFF (out side cylinder).
During ATC operation, the spindle tool outer cylinder unclamp LS remains ON at the timing
the spindle tool outer cylinder unclamp LS should come OFF.
Re: Okuma ESV4020 Tool Change Hang Up
HI BRO!
I HOPE ALL IS WELL AT YOUR SIDE, MY OKUMA MILL IS STUCK WITH 2715 WRONT T COMMAND 2 AND IN THE MACHINE DIAGNOSIS PAGE ITS SHOWING (15418 ATC SEQUENCE IS IN SPINDLE ROTATION INHIBIT) AND THE TOOL POT IS STUCK FACING TOWARDS DOWN SIDE. CAN YOU PLEASE SUGGEST HOW TO MANAGE THIS ISSUE.
REGARDS SUNIL