What Is a Press Brake?

The bending machine is a machine capable of bending thin plates. Its structure mainly includes a bracket, a table and a clamping plate. The table is placed on the bracket. The table is composed of a base and a pressing plate. The base is connected to the clamping plate by a hinge. The base is composed of a seat shell, a coil and a cover plate. The coil is placed in the recess of the seat shell, and the top of the recess is covered with a cover plate. When in use, the coil is energized by the wire, and after the current is energized, the pressure plate is attracted, thereby clamping the thin plate between the pressure plate and the base. Due to the use of electromagnetic force clamping, the pressure plate can be made into a variety of workpiece requirements, and workpieces with side walls can be processed, and the operation is very simple.

The hydraulic bending machine includes a bracket, a table and a clamping plate. The table is placed on the bracket. The table is composed of a base and a pressure plate. The base is connected to the clamping plate by a hinge. The base is composed of a seat shell, a coil and a cover plate. It is placed in the recess of the seat shell, and the top of the recess is covered with a cover plate.

When in use, the coil is energized by the wire, and after the current is energized, the pressure plate is attracted, thereby clamping the thin plate between the pressure plate and the base. Due to the use of electromagnetic force clamping, the pressure plate can be made into a variety of workpiece requirements, and workpieces with side walls can be processed. The bending machine can change the bending machine mold to meet the needs of various workpieces. ^[1]

Bending machines are divided into manual bending machines,

Bending machine is an important equipment for the bending and forming of workpieces in the sheet metal industry. Its function is to press steel plates into parts of various shapes according to process requirements. As shown in the figure, the structure diagram of the hydraulic sheet bending machine is mainly composed of a left and right upright post, a table and a cross beam. The left and right oil cylinders are fixed on the upright post. Movement, the lower mold is fixed on the workbench, the upper mold is installed at the lower end of the slider, the hydraulic system provides power, and the electrical system gives instructions. Under the action of the oil cylinder, the slider drives the upper mold downward and the lower mold to close to achieve the folding of the sheet. bend. The left and right uprights, the table and the slider (hereinafter referred to as the three major pieces) are the key parts of the bending machine. The sum of the weights of the three major pieces accounts for 70% to 80% of the total weight of a bending machine. Its strength and rigidity directly determine the machine's running accuracy, service life, and workpiece accuracy.

1. Adopting all-steel welded structure with sufficient strength and rigidity;

2.Hydraulic upper transmission, the oil cylinders at both ends of the machine tool are placed on the slider, which directly drives the sliding work;

3. The slider synchronization mechanism uses a torsion axis to force synchronization;

4, using mechanical block structure, stable and reliable;

5. The slider stroke can be adjusted quickly and manually, finely adjusted manually, and the counter is displayed;

6. Oblique wedge-type deflection compensation mechanism to ensure higher bending accuracy. ^[1]

Processed by ordinary hydraulic bending machine

Before performing machine maintenance or wiping the machine, the upper mold should be aligned with the lower mold, then put down and shut down until the work is completed. If you need to start or perform other operations, you should select the manual mode and ensure safety. Its maintenance content is as follows:

1.Hydraulic oil circuit

1) Check the oil level of the fuel tank every week. If the hydraulic system is repaired, check the oil level. If the oil level is lower than the oil window, fill the hydraulic oil.

2) The hydraulic oil used in this machine is ISO HM46 or MOBIL DTE25;

3) The new machine should be changed after 2000 hours of work, and after every 4000 to 6000 hours of work, the oil should be changed. The oil tank should be cleaned each time the oil is changed

4) The system oil temperature should be between 35 ° C and 60 ° C, and must not exceed 70 ° C. Excessively high temperatures will cause deterioration of oil quality and accessories.

2,

When choosing a bending machine incorrectly, the production cost will rise, and the bending machine cannot be expected to recover the cost. Therefore, several factors need to be weighed in decision-making.

1. Strictly abide by the safe operating rules of machine tool workers and wear labor protection articles according to regulations;

2. Before starting, carefully check whether the motor, switch, wiring and grounding are normal and firm, and check that the operating parts and buttons of the equipment are in the correct position;

3. Check the coincidence and sturdiness of the upper and lower molds; check whether each positioning device meets the processing requirements;

4. When the upper slide and each positioning axis are not at the origin, run the program of returning to the origin;

5. After the equipment is started, it will run empty for 1 to 2 minutes, and the upper skateboard will move 2 to 3 times during full stroke. If abnormal sounds or faults are found, stop the machine immediately, remove the faults, and work after everything is normal;

6. When working, one person should be under the unified command to make the operator cooperate closely with the feeding and pressing staff to ensure that the cooperating personnel are in a safe position to issue bending signals;

7. The sheet must be compacted when bending to prevent the sheet from being warped and hurting during bending;

8. The power must be cut off when adjusting the sheet material and the die, and it should be done after stopping the operation;

9. When changing the opening of the variable lower die, no material is allowed to contact the lower die;

10. When the machine tool is working, no one is allowed to stand behind the machine tool;

11. It is strictly forbidden to fold the sheet at one end alone;

12. When the workpiece or mold is found to be incorrect during operation, stop and correct it. It is strictly forbidden to correct by hand during operation to prevent injury to the hand;

13. It is forbidden to fold extra-thick iron plates or hardened steel plates, high-grade alloy steels, square steels and plates that exceed the performance of sheet bending machines, so as not to damage the machine tools;

14, often check the overlap of the upper and lower molds; whether the instructions of the pressure gauge meet the requirements;

15. Shut down immediately if abnormal occurs, check the cause and remove it in time;

16. Before shutting down, place wooden blocks on the lower mold under the oil cylinders on both sides and lower the upper slide onto the wooden blocks;

17. Exit the control system program first, then cut off the power. ^[2]

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