Our spindle isn't opening up completely to allow it to release or accept tool holders. I checked the air pressure and tried it in manual mode and I got it to release the tool holder that was in, but now it doesn't want to grab any other tool holders. This was a replacement spindle that was installed approximately 4 months ago. Since the installation it had worked fine until this point. I am hoping this is something minor that I may be overlooking (I can't afford to be down another 3 days waiting on another replacement spindle). Any suggestions?
From contributor A:
I experienced the same problem occasionally with my HSD spindle. Usually the operators leave a tool in the spindle for a long time and the cone sticks to the inner opening of the spindle. Another problem I experienced was exactly what you describe. It usually means some basic cleaning is required of the release switch. Also check the connection to your spindle as the plug may be loose.
You also have to check where the controller thinks the tool is. Sometimes depending on the sequence of removing or inserting the tool, the control may think the tool is not in the correct place. On our Biesse Rovers, if the machine, for example, stops in the middle of performing a tool change, it registers that a tool change occurred but the tool is still physically in the HSD spindle.
After talking to Thermwood, we came up with two options that could be causing the problem:
1. Problem with the air cylinder.
2. The spindle shaft that I put in recently had a problem with the part that grabs the retention knob.
They are sending me both parts to try, but I think the problem is with the spindle shaft part. I took the air cylinder out and it seems to be working fine. As far as the tool holders getting stuck in the way you guys mentioned, I started cleaning the holders periodically with scotchbrite and haven't had a problem in a long while. Thanks.