Methods to reduce errors in sheet metal processing

Methods to reduce errors in sheet metal processing

In sheet metal processing, we need to reduce the error to a minimum, but how should we do it? The slit width of laser cutting is generally about 0.5mm. As for the specific width, it is mainly related to the thickness, performance, laser power and injection pressure of the cutting material, and its precision is as high as 0.01mm.

When we use sheet metal processing for blanking, we should ensure that the shear error can be controlled. Of course, it is impossible that there are no errors during our operation, but we should make sure that the errors are within the corresponding range. In addition, CNC machining and shearing plates are the keys that cannot be ignored in machining. It would also be very beneficial for our homework if his bevel error could be controlled. This technology is very precise, so when we use it, we should see its strength, fatigue resistance and some corresponding performance. His parts are more complex, so we need to use materials with more complete properties. With the development of sheet metal processing, what is the method to reduce part error? Methods to prevent the mold from carrying materials:

① Reasonably increase the entrance modulus of the mold.

② Sheet metal processing is usually sharpened to maintain sharpness and demagnetization

③ Use a special anti-tape mold

④ Increase the mold clearance

⑤ Install mold ejector

⑥ Check the fatigue strength of the die spring or discharge sleeve

⑦ The beveled die is used to replace the flat die

Sheet metal processing

Die belt problem:

① The sharpness of the mold edge. The larger the edge fillet, the easier it is to cause the waste to increasse

② In the process of sheet metal processing, the entrance modulus of the mold is determined. The inlet modulus of the mold is small, which is easy to cause the waste to rebound

③ Whether the mold clearance is reasonable. If the mold gap is not suitable, it is easy to cause the scrap to rebound

④ Is there more oil on the surface of the machined plate?

⑤ Spring fatigue damage. Tells you the speed of the laser. In laser cutting technology, we often need to pay special attention to cutting speed, thickness and slit width. First, regarding the speed of laser cutting, when the laser power and air jet pressure increase, the speed increases, but the speed decreases as the material thickness increases

Sheet metal processing

Sheet metal processing is not only a key technology that sheet metal technicians need to master, but also an important process for sheet metal product forming. The sheet metal processing unfolded view is a plan view (2D) which is unfolded according to drawing (3D). Sheet metal processing is not only a key technology that sheet metal technicians need to master, but also an important process for forming sheet metal products.

  1. The unfolding method should be consistent, convenient, material saving and machinability; the clearance and edge sealing method should be selected reasonably. The gap below T=2.0 is 0.2, and the gap between T=2-3 is 0.5. The edge sealing method adopts the long side and the short side (door panel); reasonable consideration of tolerances and dimensions: the end of the negative difference, the positive difference is halved; the shape and size of the hole: the positive difference goes to the end, and the negative difference goes to half.
  2. Burr direction; draw sectional views of parts and directions such as tooth extraction, riveting, tearing, punching (bag), etc.; check the material and thickness of the plate, the special angle of the thickness tolerance of the plate, and the bending angle to be tested and folded. Inner diameter (usually r=0.5). expand
  3. The error-prone place should be highlighted (similar to asymmetry); when the size is large, the enlarged picture should be added; the position that needs to be painted and protected should be marked.


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