How does adaptive control protect a CNC machine tool from a dull cutting tool?

Adaptive control protects a CNC machine tool from a dull cutting tool by automatically monitoring performance variables, such as the torque applied to the spindle and servomotors.1

The machine's control unit is programmed with specific thresholds for allowable torque during an operation. When a dull tool causes the torque to exceed these predefined maximum values, the system detects the change and triggers an automatic adjustment. To prevent damage to the tool, the workpiece, or the machine itself, the control unit corrects the situation by either reducing the feed rate or modifying the spindle speed. This capability is essential for maintaining operational integrity and is a key factor in the development of unmanned machining techniques.1