There are a lot of automobile sheet metal parts processing technology needs to pay attention to

2019-12-11 15:36:54

In the process of sheet metal processing, there are many processing technologies that need to be paid attention to, including welding, cutting and other processes, as well as bending, but no matter the bending radius or bending angle, we should pay attention to them to avoid failing to meet the design requirements.

When the automobile sheet metal processing materials are bent, the upper and outer layers of the fillet area are stretched, and the inner layer is compressed. Therefore, under the same thickness, the smaller the bending radius is, the more serious the material is stretched and compressed, even causing cracks and fractures.

So we know that when we design the structure of bending parts, we should avoid too small bending fillets. The small bending radius is the straight edge height of the bending parts, so the straight edge height of the bending parts should not be too small. When the side of the sheet metal bend is a bend with an angle, the small height of the side is the hole margin on the bend.

In addition, the bending curve should avoid the position where the size changes abruptly, so as to prevent the stress concentration at the sharp corner from producing bending crack. The good thing is to move the bending curve for a certain distance and take leaving the sudden change of size as the basic principle to ensure the bending effect.

In the process of sheet metal processing, laser cutting is a very important processing technology. A good laser cutting part can reduce a lot of unnecessary steps for subsequent processing. What are the important factors of high-precision laser cutting? Today's editor will explain to you:

1. The size of the spot after the laser beam passes through the focus.

The smaller the laser spot, the higher the precision, especially the smaller the slit, the smaller the laser spot can reach 0.01mm.

2. The displacement precision of the worktable determines the repeated precision of laser cutting. The higher the precision of the worktable, the higher the precision of the cutting.

3. The greater the thickness of the workpiece, the lower the precision and the larger the slit.

Because the laser beam is tapered and the slit is tapered, the material with thickness of 0.3mm is much smaller than that with thickness of 2mm.

4. The workpiece material has a certain impact on the laser cutting accuracy.

In the same case, the cutting accuracy of different materials is slightly different. Even for the same material, if the material composition is different, the cutting accuracy will also be different. Laser cutting has good quality, no extrusion, narrow incision, high precision, good incision surface cleanliness, generally no need to re treat the cutting edge, which is an ideal choice for the processing and manufacturing industry.