Bending Tips: Do you know what are the calibration steps of press brake?
Press brake machine used to bend and shape metal plates and is a necessary equipment for metal processing enterprises and metal workshops. However, press brakes often suffer from misalignment and loss of accuracy, which makes it difficult to produce high-quality parts. The precision and accuracy of the press brake depends on the calibration, which is necessary to ensure that the press brake is in the best condition and produces accurate parts.
Press brake motivation calibration
Press brake Motor calibration is the process of adjusting or calibrating machine parts to meet manufacturer specifications, which ensures that the material can be bent accurately to the Angle and size you require. If the press brake is not properly calibrated, it can result in inaccurate bending, resulting in poor quality parts, and damage to machine components.
How to calibrate press brakes?
The press brake calibration process consists of several steps that must be carried out in the correct sequence to ensure that the accuracy of the machine is maintained.
The steps required for the early calibration of the brake machine:
Step 1 Collect tools
It is best to prepare some detection or measurement tools, such as press brake tools, calipers or micrometers, precision goniometers, and test bending materials.
Step 2 Check the specifications
Refer to the manufacturing menu or documentation for press brake specifications such as tonnage, bend length, press speed, etc., to ensure they meet your needs for your specific task.
Step 3 Clean the machine
If the machine is dirty, it will affect the accuracy of the machine calibration, and it is necessary to ensure that the press brake is clean and free of dirt, dust or debris. Pay special attention to the pad, ram and rear gauge of the press brake, as these are the places where it is most likely to come into contact with the sheet metal, and it is necessary to ensure that all safety devices are in place and working properly.
Step 4 Check
I. Check the machine parts
Before starting the calibration process, the machine must first be inspected, looking for any damaged or loose connections, whether there is wear, etc. Because damaged and worn parts will affect the accuracy of the press brake, if there is a damaged part, it can be replaced before continuing to calibrate.
In addition, check the machine components, including cushion, ram, back gauge, bending tools, etc. Check that the hydraulic system, electrical connections, frame and controller are working properly and that there are no signs of damage. Check the workpiece and mold for abnormal phenomena, if so, you can immediately replace the damaged mold, so as to avoid inaccurate bending.
ll. Check the rear pressure gauge
After resetting the machine, the next step is to check the rear gauge. The rear gauge can be adjusted to ensure that the sheet metal is bent to the correct Angle and length. When checking the back gauge, it is important to make sure it is properly aligned, otherwise it will affect the accuracy of the bend.
lll. Check the oil level
After checking whether the hydraulic system is faulty, continue to check the oil level of the hydraulic system, too low oil level will lead to poor machine operation, resulting in inaccurate bending results. Check before each use to make sure there is enough oil to run the machine.
Step 5 Reset the machine
After checking the machine parts, the next step is to reset the machine. To do this, turn off the machine and disconnect all power, which allows you to work safely on the machine, eliminating the risk of injuring yourself or damaging the machine.
Step 6 Test
Before calibration, the press brake should be tested to check its accuracy, and you can test the press brake by operating the specimen bend on the scrap.
I. Bend check
Use a reliable protractor or Angle meter to measure the final bending Angle produced by the bending of the sheet metal. If the bending result is inaccurate, adjust the bending tool accordingly so that it reaches the required Angle.
ll. Deformation inspection
Check the press brake for deflection during bending. Excessive deflection will affect the bending accuracy. If necessary, follow the manufacturer's guidelines to minimize deflection.
lll. Test the parallelism of Ram
The next step is to test the parallelism of the ram, the parallelism of the ram refers to the alignment of the bends in different areas of the working surface of the machine, and an accurate measurement of the parallelism of the ram is essential to obtain an accurate bend.
Steps to set up the brake for calibration:
There are many different types of press brakes with different brake system calibration procedures. Nevertheless, the following steps are standard and apply to most press brakes, regardless of their place of manufacture or model.
Step 1: Disconnect the power supply
Before starting any work on the press brake, it is crucial to disconnect the power to the device. This eliminates the risk of electric shock during calibration.
Step 2: Locate the safety valve
The reducing valve is responsible for regulating the pressure force in the hydraulic system. Position the valve and turn it clockwise to minimize pressure in the system.
Step 3: Check the tonnage monitor
The tonnage monitor is responsible for measuring the tonnage applied to the workpiece by the press brake. Use a tonnage monitor to verify that the press brake moves tonnage within the manufacturer's specified range.
Step 4: Remove brake cover
When the tonnage monitor shows the required water level, remove the brake cover to reveal the ram, brake cylinder and brake pads.
Step 5: Release the brake pads
Use an Allen wrench or screwdriver to loosen the brake pads on both sides of the ram. The brake pads should be loose enough to move only a millimeter or two.
Step 6: Reinstall the brake cap
After releasing the brake pads, replace the brake cover and ensure that the brake cover is firmly fastened.
Step 7: Start press brake
Activate the brake and allow the slider to move about 10 mm. After that, check whether the brake pads are in contact with the ram. If not, adjust the brake pads until they touch the ram.
Step 8: Measure the ram travel distance
Using the dial, measure the distance the slider travels before stopping. Ideally, this distance should equal the distance from when you hit the brake pedal to when the brake stops. Adjust brake pads if necessary.
Step 9: Repeat the process
Repeat the process several times and record the distance the ram moves on each punch. If the driving distance is inconsistent, adjust the brake pads to correct any deviation.
Step 10 Run a complete test
Using different thicknesses of materials and different bending angles, the entire test procedure is run on the press brake, comparing the measurement results with the expected results to ensure accuracy and repeatability.
Step 11 Save the calibration records
Keep a detailed record of the calibration process, including any adjustments and final Settings achieved, which is very useful for later reference and troubleshooting.
In short, it is necessary to calibrate the press brake machine. It is of great significance to check the press brake machine regularly to maintain the accuracy of the press brake machine and prolong the life of the press brake machine. While the final step in the calibration process is to measure and adjust the machine to meet the manufacturer's specifications, it is also necessary to use the measuring tools to obtain accurate readings, and the adjustment can only be carried out by qualified personnel with in-depth knowledge of the press brake, the manufacturer's specifications must be followed and qualified personnel hired to handle the calibration process.
In addition, scheduling regular maintenance can keep the press brake in the best condition, regular inspection and calibration of the press brake machine to ensure the production of high quality parts, saving money and time, extending the life of the machine, but also to keep the machine accurate and safe operation. Failure to calibrate press brake compressors can result in reduced efficiency, reduced profitability and increased risk of accidents.
After knowing this, you can visit our website, if you need to learn more about CNC press brake machine knowledge or buy a machine, you can also consult our sales staff, they can recommend you the best CNC press brake for you.
