We've recently bought a 1990 QT-15N T32-2, turning center and it's been running pretty good for its age. One of the issues that we've been having is that the turret skips stations when it's cold. Say its at tool 1 and you push the manual index button to go to 2, it might skip right past 2 and land at 3. It does it equally in either direction and it will also do it in auto mode while cutting a part. I've adjusted the encoder in the turret so that it is in the middle of the range where the light is on when tool 1 is up and it makes no difference. Also cleaned things up in there while I had the cover off. It is really bad when the machine is first turned on and you're setting up a job. It might skip on the first couple of parts in auto, then all of a sudden it quits doing it and runs parts just fine. Won't do it again until the machine is turned off and it sits overnight.
I'm not sure if the encoder is bad, or if it's something else. It always displays the correct tool for where the turret is. If it tries to bring up tool 8 and lands at 9, it displays tool 9 and it knows it messed up. In auto mode, it will just sit there. Sometimes it throws an error, but most of the time it just sits there and you have to shut the control off and restart it. This machine has the 12 tool turret.
I hate to throw an $800 encoder at it if it's more simply a sticky solenoid valve or relay or something.
Anyone have any thoughts? Thanks in advance.
I'm not sure if the encoder is bad, or if it's something else. It always displays the correct tool for where the turret is. If it tries to bring up tool 8 and lands at 9, it displays tool 9 and it knows it messed up. In auto mode, it will just sit there. Sometimes it throws an error, but most of the time it just sits there and you have to shut the control off and restart it. This machine has the 12 tool turret.
I hate to throw an $800 encoder at it if it's more simply a sticky solenoid valve or relay or something.
Anyone have any thoughts? Thanks in advance.