Label：Sheet Metal, Bending
Nov 8, 20232480
Sheet metal bending is a process with strict technical requirements. There are many things that you need to know during the entire bending process. Let's take a look at some of them.
1. When bending a long workpiece, do not extend your head onto the workpiece to prevent the workpiece from bouncing up and injuring your body.
2. When forming, the products should be processed in the order of "cover first, then bottom", and the sheet metal processing should be coordinated. If there is difficulty in cooperation due to insufficient angles, dimensional tolerances, bending deformation, correction is necessary.
3. During the sheet metal bending process, it is necessary to have sharp eyesight and quick hands, consistent coordination between man and machine, and concentration. Personnel unrelated must not stand near the bending machine.
4. Choose the mold according to R for arc processing. The lower mold can use a "V" groove that is slightly larger than the arc mold. If you use a straight knife or a sharp knife to "rush" the molding, be careful not to stretch the distance between the bending sections. Don't get too long distances between bending sections. Avoid obvious knife marks on the workpiece surface.
5. When the bending machine is running, it's strictly prohibited to extend your hands from under the mold to the rear of the machine tool from the front to adjust the positioning gauge or repair the machine.
6. When bending thick sheets or wide and long workpieces, the bending speed should not be too fast, and the upper and lower dies must be slowly matched to avoid damage to the mold.
7. When pressing the dead edge, the minimum angle shall not be less than 40°.
8. When processing samples, scrap materials must be trial-folded to meet the requirements of the drawings before they can be formed. Any issues that have an impact on the processing should be recorded and reported to the project engineers.
9. There are two correct ways to hold the workpiece. First, the thumb is above the material, and the other four fingers are below the material. Second, for bending small workpieces, use pliers instead of hands to clamp them.
10. For bending thin and small workpieces, the speed should be slow to avoid inconsistent human-machine cooperation, causing deformation.
11. When the machine is running, the low limit positions of the upper and low dies must be properly controlled. The workpiece should just be able to be taken out after bending. The bending speed must be reasonable. Generally speaking, the upper die should start decelerating when it is 2-5mm away from the bending surface of the workpiece. This is safe and high efficient.
12. Keep the working place tidy and the workshop passages clear. No objects are next to fire-fighting equipment.