Currently, the bending machine industry is providing increasing technical support to the manufacturing sector. According to statistics, bending machines are distributed by manufacturing segments in sales, with sheet metal accounting for 35%, automotive 34%, aerospace 12%, and others 19%. High-quality bending machine molds can also attract customers. For users, affordable products with good quality have always been the procurement goal. Good products can improve work efficiency, which also means cost savings in processing and increased economic benefits. What are the key points to note when installing bending machine components?

One, Bending Machine Springback Control - Significant springback occurs without mandrels. This must be considered when selecting bending dies. Depending on the bending radius, springback can cause the tube to return 2 to 10 degrees, and may also increase the bending radius of the tube. The smaller the bending radius, the less springback. Springback is affected by the position of the pressure die and the pressure applied. This method allows for different radii from the same bending die. Additionally, the position of the mandrel can cause significant springback, reducing the bending angle and possibly increasing the radius. When the radius increases, the mandrel (towards the cutting point) should be advanced. There is no standard formula for adjusting the mandrel setting. Clearly, when the springback angle exceeds 3 degrees, the mandrel is too far back and the tube's bending radius will be greater than the bending die.

The mandrel is too far forward – there are several consequences of this. At the end of the bend on the outer cutting point, there will be a bulge, and at the beginning of the bend on the inner cutting point, there will be a depression. These deformations are illustrated on a single tube, but they do not always occur simultaneously due to variations in mandrel shape and bending radius. When using an insertable mandrel, the mold length should be at least three times the diameter of the tube.

The mandrel of the bending machine is too far back — the mandrel is slightly forward, and there are no wrinkles at the front but they start to appear at the back of the cutting point. The mandrel's position is still not far enough forward to generate the necessary pressure on the inside for material contraction. When removing the bent tube from the bending machine mold, there is a significant wrinkle. Therefore, it is necessary to advance the mandrel further until the material is no longer compressed between the mandrel and the bending mold.

Four, "Pick pump" or "suck pump," commonly occurs due to the steel ball of the oil outlet valve failing to return to its normal position. By extending the actuating rod, when the plunger pump is under pressure, a few taps with a hammer on the handle seat can reset the valve ball.

Five, insufficient oil intake in both large and small pumps is caused by debris on the filter screen inside the filter element or insufficient oil volume. Unscrew the elbow mold part, clean the screen with gasoline, and fill it with oil.

Six, oil leakage at the top of the rod is mainly caused by the damage to the piston rod top seal. Replacing the 14×2.4 O-ring should resolve the issue.

Seven, Cracks in the mold installation holes are generally caused by lateral loads during the mold item's production, such as when bent workpieces are bent again and the position is not properly aligned. Check if the positions of the two support wheels are symmetrical, oil the contact area between the support wheels and the workpiece, and align the position for the second bending.