Sheet metal bending processing of common problems and solutions to the full analysis of the strategy

sheet metal bending processing is an important process in the field of metal processing, but in practice often encounter various problems. The following is a detailed summary of common problems and treatment of Sheet metal bending:

First, common problems and reasons

1. Deformation of the workpiece at the bend after bending

Reason: This is mainly due to the bending speed, and the operator's hand movements can not keep up with the speed of workpiece bending deformation.

Solution: Reduce the bending speed, while the operator holding the workpiece and workpiece bending synchronised to ensure that the workpiece in the bending process to ensure stable deformation.

2. Bending longer workpieces, the angle of a large head, a small head

Reason: This may be due to inconsistent thickness of the material, thick at one end and thin at the other; uneven wear of the upper die, one end of the height dimension is smaller than the other; or the middle block is not balanced, not at the same level.

Solution: Feedback to the material supplier, pay attention to the choice of material and thickness consistency.

Replace the badly worn upper mould to ensure that the height dimensions are the same at both ends.

Adjust the middle block so that it is on the same level.

3. When bending Z-fold, the workpiece is deformed

Reason: This is mainly due to the positioning problem of the rear fixing gauge, and the workpiece collides and squeezes with the rear fixing gauge in the bending process.

Solution: Adopt the function of pulling back the rear gauge to avoid the direct collision between the workpiece and the rear gauge and reduce the deformation.

4. Bending size is small, positioning difficulties, the upper mould is easy to press the rear gauge

Reason: This is usually due to the size of the workpiece does not match the position of the rear gauge, resulting in positioning difficulties.

Solution: Add a thin spacer in front of the rear gauge to make the rear gauge back, avoiding the upper die, thus facilitating positioning and bending.

5. There are holes in the workpiece, the distance from the hole to the bending line is very close, direct bending will make the hole deformation

Reason: During bending, the material around the hole is squeezed and stretched, resulting in deformation of the hole.

Solution: Press the line at the bending line and then bend it to reduce the impact on the hole during bending.

Use laser to cut the line at the bending line to avoid pulling the material and reduce the hole deformation.

If the production volume is not large and the aesthetic requirements are high, you can first laser cut small holes, then bending, and finally reaming.

Second, the summary

Sheet metal bending process encountered a variety of problems, but most of the problems can be solved by adjusting the process parameters, replacement of worn parts, optimise operating practices. In practice, the operator should be familiar with the causes of various problems and solutions, according to the specific circumstances of the flexible response, in order to ensure the quality and efficiency of sheet metal bending processing. At the same time, regular inspection and maintenance of equipment and moulds, and timely replacement of worn parts, is also an important measure to ensure the smooth progress of sheet metal bending processing.