How is the intelligent torque protection of the Electric Tapping Machine implemented?

CNC Functions of the Servo Electric Tapping Machine: Mechanism for Precise Depth and Torque Control

1. Closed-Loop Sensing and Real-Time Torque Monitoring

The machine tool is equipped with a cutting force/torque sensor that captures the force on the tool in real time and feeds the signal back to the CNC system. The system automatically adjusts the motor output according to the set torque threshold to prevent overload or tool jamming.

2. Piecewise Approximate Torque Curve Algorithm

Uses a "piecewise approximate torque curve" control strategy, which subdivides the acceleration and deceleration process of the motor to achieve fast response and smooth torque changes. This algorithm does not rely on a precise physical model, yet it maintains high stability and high precision during rigid tapping.

3. CNC Command-Level Depth Setting

The operator presets the target tapping depth (Z-axis displacement) on the CNC panel. The system performs closed-loop control based on the position information provided by the encoder. Each feed is completed within a micrometer-level error range, ensuring consistent thread depth.

4. Real-Time Error Compensation and Safety Protection

When the sensor detects that the actual torque or depth deviates from the set value, the controller immediately performs error compensation: reducing the feed speed, decreasing the rotational speed, or pausing the feed. If the torque exceeds the safety threshold, the system will automatically stop and sound an alarm to prevent tool damage or workpiece deformation.