In CNC lathe workpiece processing, rapid automatic correction is one of the important steps to ensure processing accuracy and efficiency. The following are general methods and steps for rapid automatic correction of CNC lathe workpiece processing:

1. Zero point calibration: Before any automatic correction of the CNC lathe, ensure that the zero point of the CNC lathe is correct. The zero point is usually the origin of the workpiece coordinate system, and the correct zero point is crucial for subsequent automatic correction.

2. Tool calibration: CNC lathes use special tool sensors for tool calibration. This usually involves mounting sensors on the tool and then letting the CNC automatically detect the tool's length and radius. This ensures accurate calculation of the tool path during the cutting process.

3. Measure the workpiece: CNC lathes use measuring instruments (such as inductive measuring instruments, laser measuring instruments, etc.) to measure the workpiece and obtain the size and position information of the actual workpiece.

4. Comparison with CAD model: The CNC lathe compares the actual measured workpiece data with the predetermined CAD model. This can be done through software in the CNC system.

5. Automatically adjust coordinates: The CNC lathe can automatically adjust the workpiece coordinate system based on the comparison between the actual measurement data and the CAD model. This includes adjustments such as offset and rotation of the workpiece to ensure that the final machined workpiece is consistent with the design.

6. Compensate tool deviation: If the CNC lathe finds tool deviation during tool calibration, the CNC system can automatically perform tool compensation, that is, automatically adjust the tool path during the machining process to maintain machining accuracy.

7. Dynamic compensation: Some advanced CNC systems for CNC lathes support dynamic compensation, which can monitor the status of workpieces and tools in real time during the processing process and make real-time adjustments to deal with possible changes and errors.

8. System calibration: CNC lathes regularly perform overall calibration of the CNC system, including servo systems, encoders, etc., to ensure the stability and accuracy of the entire system.

9. Data recording: The CNC lathe records the data of each automatic correction for quality control and subsequent analysis. This helps identify potential problems and improve production processes.

These steps are usually general methods for rapid automatic correction in CNC lathe workpiece processing. The specific steps and tools may vary depending on the model and manufacturer of the CNC system, so it is recommended to refer to the corresponding CNC system manual and technical documentation for detailed operating instructions.