The efficiency of a steel bar straightening machine largely depends on accurately setting the cutting and return times. These parameters are crucial for ensuring smooth and precise operation, especially when processing large or hard steel bars.
Understanding Cutting and Return Times
- Cutting Time: The default cutting time for many steel bar straightening machines is set at 1.4 seconds (140 milliseconds). This setting is designed to balance efficiency and effectiveness. However, adjustments may be necessary based on the steel’s characteristics. For continuous cutting operations, extending the cutting time can improve performance and accuracy.
- Return Time: Properly configuring return time is essential to avoid issues like the steel bar hitting the blade or obstructing its passage through the cutting hole. If problems occur, increasing the return time can resolve these issues. While different manufacturers might have variations in their default settings, the principle remains consistent.
Step-by-Step Configuration
Here’s how to adjust these settings using a computer-controlled steel bar straightening machine:
- Power On and Initialization:
- Turn on the machine and wait for the LCD display to reset to zero.
- Simultaneously press keys [1], [3], and [5] to enter the settings mode. Note that the tool outlet and outlet times are usually optimally set at the factory.
- Adjusting Cutting Time:
- The batch display window will show “11,” the length window will display “t1,” and the quantity window will show “200” (default value), indicating the current cutting time is 0.200 seconds.
- Use the number keys to adjust this time as needed, then press Enter to confirm.
- Configuring Return Time:
- The batch display window will now flash “22,” the length window will flash “t2,” and the quantity window will flash “180” (default value), indicating the return time is 0.180 seconds.
- Modify the return time using the number keys and press [OK] to confirm and exit.
Manufacturer Variations
- Cutting times typically range from 0.100 to 0.260 seconds, while mechanical cutting time is fixed at 0.060 seconds.
- Single-tube hydraulic presses only adjust cutting time, not return time.
Precautions
- Avoid arbitrary changes to end times and export times. These are factory-set and should be adjusted cautiously.
- Incorrect settings can lead to operational issues such as insufficient pressure, which can hinder rebar cutting, or excessive pressure, which can cause oil leakage, hydraulic system aging, motor overload, and overheating.
Conclusion
Properly configuring the cutting and return times is essential for optimizing the performance of a steel bar straightening machine. Regular adjustments and adherence to manufacturer guidelines ensure smooth operation and help prevent potential issues. By understanding and managing these settings, you can enhance machine efficiency and maintain high-quality output.
