https://ritecmachinery.com/products/cnc_press_brake_machines/CNC press brake machines play a key role in the metal processing process, and their control accuracy directly affects the quality of the final product. Since different types of hydraulic cylinders (such as plunger pump cylinders and piston rod cylinders) have a significant impact on the pressure calculation of the CNC press brake machines, size control is particularly important in the bending operation.

How to effectively control the bending size?

 

1. Avoid cumulative errors: After each bending, the unfolded size must be measured immediately to ensure the accuracy of each step.

2. Prevent incorrect positioning: Avoid using the bent edge or the position with a larger angle as the positioning reference, which can reduce the occurrence of errors.

3. Reserve adjustment space: For products that need to rely on the bent edge for positioning, the angle should be slightly less than 90 degrees during the first fold for subsequent adjustment.

4. Check the accuracy of the equipment: Before processing, confirm the accuracy of the CNC press brake machine to ensure that it meets the processing requirements.

5. First piece inspection and patrol inspection: Perform the first piece inspection before formal processing, and conduct regular patrol inspections during the processing to ensure continuous processing accuracy.

6. Choose the right equipment: Choose the most suitable bending machine model and configuration according to the precision requirements of the product.

7. Calibrate the tool: Check whether the upper die tip is in the same straight line before processing, and avoid using non-concentric tools to ensure the consistency of processing.

8. Optimize the process flow: Use a method that simplifies the difficulty of processing and reasonably arrange the process steps to improve processing efficiency and accuracy.

9. Accurate positioning: Ensure that the positioning device of the bending machine works normally. If any abnormality is found, it should be detected and corrected immediately.

 

How to solve the problem of excessive bending angle error of CNC press brake machine?

 

1. Check the compensation cylinder: Confirm whether the compensation cylinder of the CNC bending machine can be fully restored to zero position. If the compensation deflection is too large, it may cause angle error.

2. Check the quick clamp bevel: Make sure that the quick clamp bevel of the CNC press brake is not loose, which will affect the bending accuracy.

3. Observe the change of the bottom dead point: After each bending operation, check whether the position of the bottom dead point has changed, which may be the source of the angle error.

4. Check the installation of the bow plate: Make sure that the bow plate is installed in accordance with the specifications and the screw hole is not stuck, otherwise it will affect the bending accuracy.

5. Impact of material changes: Changes in the sheet itself, such as thickness, material and stress changes, will affect the bending angle.

6. Check the grating ruler: Make sure that the grating ruler of the CNC press brake machines is not loose, otherwise it will affect the accuracy of the measurement.

7. Positioning accuracy calibration: Check whether the zero offset value of the proportional valve is correct. If the positioning is inaccurate, the bottom dead point may not be in place, thus affecting the bending angle.

 

Through the above methods, the size and angle accuracy of the CNC bending machine during the bending process can be effectively controlled, thereby improving product quality and reducing rework rate. In daily maintenance, timely detection and resolution of potential problems is the key to maintaining efficient operation of the bending machine.