Common problems and treatment methods of bending of sheet metal shell processing:

In the bending process of sheet metal shell processing in Hunan, many problems are often encountered. By understanding these common problems and their treatment methods, we can provide solutions to the problems encountered in subsequent bending, so as to achieve the purpose of fast and efficient production.

First, a, the problem point: the workpiece is deformed at the bend after bending.

B. Reason for occurrence: The deformation is mainly caused by the fast bending speed, and the hand does not keep up with the bending speed of the workpiece

C. Solution: Reduce the bending speed and hold the workpiece and the workpiece simultaneously.

Second, a, the problem point: bending a longer workpiece, there will be an angle of one end is large and the other end is small

B. This situation generally occurs due to the following circumstances:

(1) The thickness of the material is inconsistent, one end is thick and the other is thin

(2) Uneven mold wear and tear, with different heights at both ends

(3) The intermediate blocks are unbalanced and not at the same level

C. Solution:

(1) Feedback to the laser or NCT to make it pay attention to material selection

(2) change the tool die

(3) Adjust the middle block

Third, a, the problem point: when bending, some workpieces will deform.

B. Reason for occurrence: This situation is mainly due to the fact that C is located at the back gauge. When bending B, the workpiece is bent and moved upward, bumped into the back gauge, and squeezed by the back gauge. After bending, D is squeezed and deformed.

C. Solution: Adopt the post-setting pull-back function.

Fourth, a, the problem point: the bending size is small, it is not easy to locate, and the upper mold is easy to press on the back gauge.

B. Causes: Because t = 0.8, press the mold selection principle, v = 50.8 = 4mm.4v center to the edge distance is 3.5mm, and 2.9mm inner size is 2.9-0 = 2.1mm. The bending size is within the distance from the center line to the edge of v, and it cannot be positioned during formal wear. Use the lower mold to reverse the installation, the upper mold will be pressed, and after living, the front and back installation will not work. Think of other methods.

C. Solution: 1. You can reverse install the lower die. Add a gasket (not more than 3t) before the rear gauge, so that the rear gauge can retreat and avoid the upper die. 2. If the size of the other end is ☺ 3, you can also use the other end to lean against the position and reverse install the lower die.