1, the problem point: after bending the workpiece at the bending deformation sheet metal bending process.
Cause: The deformation is mainly due to the fast bending speed, and the hand did not keep up with the workpiece bending speed.
Solution: reduce the bending speed, hand workpiece and workpiece at the same time.
2, the problem point: bending longer workpiece, there will be a large Angle, a small.
This situation is generally caused by the following situations:
(1) The thickness of the material is inconsistent, thick at one end and thin at the other.
(2) Uneven wear of the mold, with different heights at both ends.
(3) The middle block is unbalanced and not at the same level.
Solutions:
(1) Feedback to laser or NCT, let it pay attention to material selection.
(2) Change the knife die.
(3) Adjust the middle block.
3, the problem: when bending Z, some workpiece will be deformed.
Cause: This situation is mainly due to the positioning of C after the regulation, bending B, the workpiece bending up movement, hit the regulation, after the regulation was crowded. After bending, D is squeezed out of shape.
Solution: use after - defined after - pull function.
4, the problem: the bending size is small, it is not easy to locate, and the upper die is easy to press on the final gauge.
Cause: Because t=0.8, according to the principle of mold selection, V =5×0.8=4mm. The distance from the center of 4V to the edge is 3.5mm, while the internal size of 2.9mm is 2.9-0.8=2.1mm. The bending size is within the distance from the center line of V to the edge, so it cannot be positioned in formal assembly. Using the lower die reverse, the upper die will be pressed after the regulation, positive and negative installation will not work, to think of other methods.
Solution: (1) The mold can be reversed. Add a gasket (not more than 3T) in front of the rear gauge, so as to make the rear gauge backward and avoid the upper die; (2) If the size of the other end is ≧3, the other end can also be installed by the lower mold.