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Adjustment of the bending machine and its operation steps

by:WORLD     2022-08-25

Press brake machines are widely used in petrochemical shipbuilding, pressure vessels, machinery manufacturing and other operations. I believe that people who come into contact with it for the first time do not know much about its operation. Next, world press machine will introduce you to the adjustment of the press brake machine. And its operation steps, interested friends, may wish to go with the world press machine to see it!

Adjustment of the press brake machine:

1. Adjustment of the upper limit of the slider:

Adjusting the position of the striker II can make the rising slider stay at the required top dead center position, which can shorten the stroke distance of the slider, reduce the working cycle time, and improve productivity.

2. Adjustment of upper and lower die gaps

a. Operate the button on the button box at the lower right of the workbench, and operate in the direction indicated by the sign. The initial adjustment gap should be greater than the thickness of the plate, and the gap should be trimmed according to the angle of the folded workpiece. The handwheel can also be used for fine adjustment, and the adjustment value is displayed by the calculator, and each increase or decrease of a single digit is 0.1mm.

b. If the two ends of the workpiece angle are inconsistent, you can loosen the pin, move the connecting rod to the left, disconnect the left and right rotation connection, and turn the handwheel to change the distance of one end of the mechanical limit to achieve the purpose of finely adjusting the angle of the workpiece end.

c. If the angle of the workpiece is the same at both ends and the middle angle is inconsistent, this can make the upper die fine-tuning device. When using the fine-tuning device, put the upper die close to the lower die groove, slightly loosen the screws on the upper die connecting template and the adjustment block in the middle section, and then set the upper die to the lower die groove. Adjustable slant block on the upper part of the middle section. In the place where the middle angle is small, make the upper die protrude a proper amount, fasten the support pins, and try folding until the full length of the workpiece reaches the allowable value.

3. Adjustment of bending force of bending machine

Calculate the kN value of the sheet metal bending force in the table or according to the bending force calculation formula, and calculate the indicated pressure P value according to Table 1, and then adjust the handwheel of the relief valve 8 so that the force generated is slightly larger than that of the folding plate The kN value can be used.

4. Adjustment of back gauge distance

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

Operation of the press brake machine:

1. Calculate or check the bending force and the V-groove opening size of the lower die according to the thickness of the sheet and the length of the folded plate.

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

3. Determine and adjust the gap between the upper and lower molds.

4. Determine the position of the front and rear stoppers.

5. Determine the action specification 'jog', 'single' or 'continuous', and select it by the switch.

6. Put the workpiece in the middle of the machine table to test the pressure.

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

8. Pay attention to the sealing condition of each seal, and replace the seal in time when leakage is found.

9. The sheet metal bending should be in the middle of the machine, and it is not suitable for partial load and unilateral load, so as not to affect the accuracy of the workpiece and the machine. If some workpieces really need to work on one side, the load should be less than 100KN, but it should be as much as possible on both sides. At the same time, the plate is folded to solve the problem of unilateral eccentric load.

10. When the length of the folding plate is less than 600mm, it is not allowed to do full-load folding work.

11. Pay attention to the steering of the motor during the test run.

The above is the introduction of the adjustment and operation of the bending machine machine, I hope it will be helpful to everyone.



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