How to Adjust The Bending Angle of The Press Brake Machine?

How to use the CNC bending machine to bend different angles, the upper and lower 90-degree molds can be used uniformly for angles above 90 degrees, and the V-shaped upper and lower molds are used for angles less than 90 degrees. The debugging angle should use single-step debugging slowly.

Bending at an angle of more than 90 degrees is based on experience. If the bending machine is digitally displayed, remember the number of the digital display each time, and adjust the number the next time. When folding 90 degrees, you need to use a 30-degree sharp knife die, and the lower die should also have a 30-degree groove.

Adjusting the size of the bending machine: Adjusting the bending size is actually adjusting the ruler of the baffle, and making coarse and fine adjustments through the buttons on the lower right of the bending machine. Adjusting the bending angle is to adjust the depth of the V-line groove cut by the knife-edge, which is adjusted by the runner on the right side of the angle, and the cutting depth S≤100.

How to Use The Bending Machine:

1. First, determine the bending force and the size of the V-shaped groove opening of the lower die, which can be calculated according to the thickness of the sheet and the length of the folded sheet.

2. Align the center of the upper and lower molds and adjust the gap.

3. Determine the position and process flow of the front and rear stoppers, and switch according to the adjustment switch.

4. Place the workpiece in the middle of the hydraulic press brake table to measure the pressure.

5. Adjust the mold gap again, and adjust the upper mold adjustment block if necessary.

6. At the same time, ensure that all seals are completely sealed, and those with leakage should be replaced in time.

7. The adjustment of the back gauge generally has electric quick adjustment and manual fine adjustment, the method is the same as that of the shearing machine.

8.Step on the footswitch to start bending, if the foot is released, it will stop working, and if you continue to step on the bending, it will continue.

Press the upper die with the smaller angle on the plane of the lower die, be careful not to be too deep, it can be infinitely close, and then adjust the oil cylinder on the other side, so that the upper die on both sides can be pressed to the lower die, and the bending accuracy requirements are A factor that needs to be carefully considered, it is this factor that determines whether a high-precision CNC bending machine or a manual bending machine needs to be considered. If the bending accuracy requires ±1° and cannot be changed, we must focus on the CNC machine.

The repeatability of the slider of the high-precision bending machine is ±0.0004 inches, and the precise angle of the forming must use such precision and a good mold. The repeatability of the slider of the manual bending machine is ±0.002 inches, and the deviation of ±2~3° will generally occur under the condition of using a suitable mold. In addition, high-precision CNC bending machines are ready for rapid die set-up, which is an indisputable reason to consider when many small batches of parts need to be bent.

How to Operate The Bending Machine Correctly?

1.Strictly abide by the safety operation rules of the bending machine, and wear labor protection equipment as required. Before starting, carefully check whether the motor, switch, circuit and grounding are normal and firm, and check that the operating parts and buttons of the equipment are in the correct position.

2. Check the coincidence and firmness of the upper and lower molds. Check whether each positioning device meets the requirements to be processed. When the upper slide plate and each positioning axis are not at the origin, run the back-to-origin program.

3. After the equipment is started, run it for 1-2 minutes. Move the upper skateboard 2-3 times in full stroke. If an abnormal sound or fault is found, stop immediately, remove the fault, and work only after it is normal. When working, one person should be under the unified command, so that the operator closely cooperates with the feeding and pressing personnel to ensure that the cooperating personnel is in a safe position to send the bending signal.

4. The sheet must be compacted when it is bent to prevent the sheet from lifting and hurting people during bending. The power supply must be cut off when the plate material is pressed, and the operation must be stopped. When changing the opening of the variable die, no material is allowed to come into contact with the die. When working, the rear of the bending machine is not allowed to stand. It is strictly forbidden to fold the sheet at one end alone.

How to adjust the bending angle of the bending machine?

Before using the bending machine to bend the material, it is necessary to adjust its various angles, including the bending force, the distance of the back gauge, the upper limit of the slider, the speed of the slider, and the adjustment of the gap between the upper and lower molds, etc. Actual job requirements.

Parameter Adjustment:

1.The adjustment of the angle of the bending machine is mainly to calculate the kN value of the bending force of the sheet material according to the calculation formula, calculate the indicated pressure P-value according to the table, and then adjust the handwheel of the relief valve to make the force generated slightly less. Greater than the kN value of the folded plate.

2. The adjustment of the back gauge distance of the bending machine needs to be used for positioning in the length direction when the sheet is bent. The button on the front button box controls the motor to adjust, and the adjustment value can be obtained from the rotation table on the button box. Readout, the conversion value of the revolution table is 0.1mm/revolution, and there is a hand wheel for fine adjustment.

3. The adjustment of the upper limit of the slider of the bending machine needs to be realized by adjusting the position of the striker I, so that the rising slider can stay at the required top dead center position, which can shorten the stroke distance of the slider and reduce the working cycle time. thereby increasing productivity.

4. The adjustment of the slow motion of the slider is related to collision block I. Touch the travel switch to make the slider move at a slow speed, and the length of the slow travel time is adjusted by the adjustable potentiometer.

5. The adjustment of the gap between the upper and lower dies in the bending machine is completed by the button on the button box at the lower right of the operating table, and the operation is in the direction indicated by the sign of the bending machine. The initial adjustment gap should be greater than the thickness of the plate, depending on the workpiece to be folded. The size of the angle to trim the gap.

6. Of course, the handwheel can also be used for fine adjustment, the adjustment value is displayed by the calculator, and each increase or decrease of a single digit is 0.1mm. The most important thing in using a bending machine is to know how to use it correctly first. I believe you already know after reading the above introduction. After knowing the correct method of use, you can adjust the bending angle. I hope you can refer to the above content. harvested.