How to unlock the locked rear axle of machining center

Try to pull the knife out. First, there are two protruding knives stuck next to the central axis of the tool changing arm. In case of power failure or emergency stop, a person holds down the protruding object to correspond to the knife to be stuck, so that the knife on the knife changing arm is removed first, and then the machine is turned off and turned on. See if you can recover. If not, there is an ATC key to advance and retreat. The point is that this system is similar. If it is brilliant or constantly advancing, it is very simple. For others, you must tell the specific model.