A press brake is a type of forging machine used for bending sheet metal. By selecting different molds, it can perform various processes such as bending edges, stretching, rounding, and punching. Press brakes are widely used in industries such as light industry, aviation, and shipbuilding.
Safe Operating Procedures for Press Brakes
I. Operating the Press Brake
1. Power On: Connect the power supply, turn on the key switch, and start the oil pump.
2. Adjust Stroke: Ensure that when the lower die descends to its lowest point, there is a certain gap to prevent damage.
3. Select Bending Slot Width: Choose a slot width that is eight times the thickness of the sheet metal.
4. Adjust Back Gauge: Use electric or manual adjustments to set the back gauge.
5. Start Bending: Press the foot pedal to begin bending. Release the pedal to stop, and press again to continue the downward movement.
II. Safety Operating Procedures for Press Brakes
1. Follow Safety Regulations: Adhere strictly to the safety operating procedures for machine tools and wear appropriate protective equipment.
2. Pre-Start Checks: Inspect the motor, switches, wiring, and grounding to ensure they are in proper condition.
3. Check Molds and Positioning Device: Verify the alignment and firmness of the upper and lower molds and ensure the positioning device meets the requirements.
4. Initial Run: After starting the machine, let it run idle for 1-2 minutes. Operate the upper slide 2-3 times to check for normal operation.
5. Unified Command: During operation, one person should be in charge of directing. Ensure that assisting personnel are in a safe position before issuing the bending signal.
6. Secure Sheet Metal: Ensure the sheet metal is firmly pressed to prevent it from lifting and causing injury.
7. Power Off for Adjustments: When adjusting the sheet metal press die, turn off the power and stop the machine before proceeding.
8. Avoid Contact with Lower Die: Do not touch the lower die while changing its opening.
9. No Standing Behind the Machine: No one should stand behind the machine during operation.
10. No Solo Bending at One End: Do not bend sheet metal at one end only.
11. Stop for Corrections: If the workpiece or mold is misaligned, stop the machine to correct it. Do not attempt manual corrections while the machine is running.
12. Avoid Bending Thick or Hard Materials: Do not bend materials that are overly thick or of high hardness beyond the machine’s capacity.
13. Regular Inspections: Frequently check the alignment of the upper and lower molds and the pressure gauge to ensure they meet specifications.
14. Stop for Abnormalities: Immediately stop the machine if any abnormalities are detected, and troubleshoot the issue.
15. Shut Down Properly: Before shutting down, place a wooden block on the lower die and lower the upper slide onto it. Exit the control system program and then turn off the power.
Operating a CNC Press Brake
Operating a CNC press brake involves several steps to ensure precision and safety.
1. Power On: Turn on the power supply and start the oil pump.
2. Adjust Stroke: Set the stroke, ensuring there is a certain distance to avoid damage.
3. Select Bending Slot Width: Choose a slot width that is eight times the thickness of the sheet metal.
4. Adjust Back Gauge: Make adjustments to the back gauge either electrically or manually.
5. Start Bending: Use the foot pedal to start bending. You can control the downward movement by pressing or releasing the pedal.
Daily Maintenance of CNC Press Brakes
Regular maintenance ensures the safe and efficient operation of the press brake.
1. Check Protective Components: Inspect all protective panels, covers, and doors to ensure they are in proper condition.
2. Smooth Operation: Run all axes and observe if the movement is smooth.
3. Limit Switches: Ensure that all limit switches are functioning correctly.
4. Inspect Rails: Check the guide rails for any scratches or excessive wear.
5. Check Rail Cleaners: Ensure the rail cleaners are intact and not damaged.
6. Lubrication: Verify that the guide rails are properly lubricated.
Conclusion
By adhering to these operational and safety procedures, you can ensure the safe and effective operation of a press brake, thereby avoiding accidents and injuries. Regular maintenance and proper handling of the machine are crucial for its longevity and optimal performance.
