What are the problems in the actual operation of hydraulic plate shears? CNC plate shearing machine maintenance needs to pay attention to what?

Hydraulic shearing machine is a widespread existence in today's mechanized operation, the working principle of hydraulic shearing machine:

1. By using the main oil cylinder (fixed on the wall panel) to do downward shear movement, nitrogen cylinder return, shear should be able to ensure the straightness and parallelism requirements of the shear surface of the shear sheet, and minimize the plate distortion, in order to obtain high quality workpiece. So the hydraulic system is simplified and the operation is more stable.

2. The upper tool rest swings around a fixed axis in the shearing process. Through the action of lever, the fulcrum has little force, which can improve the service life of the shear blade and the machine. The upper blade is fixed on the knife rest and the lower blade is fixed on the work table. The working table is provided with a feeding ball, so that the sheet material will not be scratched when sliding on it.

3. The rear stopper is used for plate positioning, and the position is adjusted by the motor. The press cylinder is used to compress the sheet to prevent it from moving during shearing.

4. Guardrail is a reliable device to prevent industrial accidents. The return journey usually depends on nitrogen, which is fast and has little impact.

Common faults and troubleshooting:

1, loosen the power supply, the indicator light is on, the motor can not start; The power supply is out of phase, or the main control line is virtual. Check power supply, control line and stop button.

2, the board is thin and thick; The knife is high or low, the knife seam is not consistent with the feeding wheel. Adjust the height of the knife, the knife joint and the hanging wheel.

3, automatic cutting, when into when stop; Corresponding control circuit is virtual connected. Check whether the line is falsely connected.

4, the board before thick thin; Knife low, knife seam too small. Adjust knife height and seam.

5, hit the switch to control the back, the knife can not automatically back off; Travel switch broken or broken and stuck edge. Repair or replace the switch that controls the travel and deal with the problem of the cutters.

6, the thickness of the cross section is not uniform; Blade is not straight, knife gap size is not consistent. Resharpen the knife and adjust the seam.

7, the board is not smooth; The blade is not straight. A knife.

8, the surface is not smooth; The knife is not sharp. A knife.

9, automatic feed; The feed circuit is broken or the fuse is broken. Check and repair the incoming line, replace, check and repair.

One of the drive systems of CNC shears is to rotate the movable blades downward by connecting them to roller bearings. In this layout, Wuxi Shenclong considers that it is no longer necessary to use concave guide bars or slideways to connect the blades to the proper position during the cutting process.

The cutting Angle (the Angle at which the moving edge determines the torque of the knife) is the tension factor that determines the quality of jargon. Generally, the smaller the shear Angle, the better the quality of the code. If the specific force of the parts falling on the back of the shears is very small (less than 4'(1.22m)), bending, distortion, arch and other implicit quality problems may occur. The smaller the shear Angle, the more power the shears need

The oil in the oil pump of the plate cutter can be pumped up, but the cutting force is not enough. I have checked all the connecting parts on the tubing. Another is cut, the retreat speed is slow, retreat is not in place. If there is a technical expert in this area, please give guidance. What's the problem?

The slow return rate is due to the lack of nitrogen in the return cylinder and the need to flush nitrogen. The lack of nitrogen also leads to a lack of pressure. When cutting a sheet, the sheet must not be under pressure. If the cutting force is insufficient, the main pressure of the system can be appropriately increased. The hydraulic disc has a valve with a handle that can be adjusted to 18MPA. However, it is recommended not to adjust easily. If it is too high, it will affect the service life of the machine.