For those who are familiar with the machining center, the tool magazine and the automatic tool changer are the most frequently used components in the high-speed vertical machining center. Especially when the workpiece processing content is large, it is necessary to change the tool frequently to realize the processing of different processes. If there is a problem with the machine itself or some abnormality occurs during machining, it will cause the knife and knife phenomenon to occur. There are many faults in the high-speed vertical machining center. The common kinetic energy cut-off is the so-called sudden power failure, or the external factors such as insufficient air pressure and the tool can not be pulled normally. However, it is more common that the internal cause is such that the second tool change origin is abnormal and the spindle orientation angle is incorrect.
1. The spindle orientation angle is incorrect.
　　The directional angle running is also mostly caused by the collision, or the spindle synchronous tooth shape brings out a problem, resulting in an error in the orientation angle, and the inaccurate orientation also causes problems such as abnormal tool change of the tool magazine.
2. The position of the second tool change origin is abnormal.
　　If a high-speed vertical machining center has a collision accident caused by a misoperation, etc., it is most likely to cause the tool change origin to be incorrect. It is manifested by the knife arm pulling knife, the abnormal knife loading, and even the card knife. The arm is also damaged.