In this article, I will discuss the topic of Bending R Angle and Selection of V Groove, focusing on how these factors influence the quality and precision of metal bending processes. Understanding the appropriate bending R angles and the right V groove selection is crucial for achieving optimal results in fabrication. I will share my insights into the best practices for choosing the correct angles and grooves, as well as the implications for material behavior and finished product quality. Join me as we explore these important aspects of metalworking and their impact on our projects.

Понимание Bending R Angle

The bending R angle refers to the radius of the bend, which plays a significant role in determining the quality and strength of the finished product. A properly selected bending radius helps prevent material failure, such as cracking or deformation, during the bending process. The general rule of thumb is to choose a bending radius that is proportional to the thickness of the material being bent.

Sheet metal bending R angle is the key factor affecting the bending coefficient, and there are many factors affecting the bending R angle, such as sheet metal thickness, sheet metal material, bending upper mold corner, bending lower mold, bending pressure., working temperature, etc.

1 Sheet thickness: In actually working, the sheet thickness is much, the bending fillet is larger. As we know, the sheet thickness is much, the bending pressure is large, and the bending down V rabbet is large.

2 Sheet material: To different kinds sheet, with the same thickness, the bending coefficient has little difference. It proves that the material characteristics affect the bending fillet. The material has a property that resists bending and may directly affect the bending radius. The material has an effect on the bending radius, but it has little effect on our actual use.

3 Bend upper die fillet: the normal bending die fillet is not greater than R1, and the minimum bending fillet is not less than 1, which has little impact on the non-required bending fillet. For the special demand sheet metal bending fillet less than 1 or greater than 1, it is not determined by the bending upper die fillet. Therefore, the fillet of the upper die directly affects the bending radius.

4. Bending pressure: the thicker of the sheet metal is, the greater the material’s ability to resist bending deformation. At this time, it is necessary to adjust the pressure. The bending pressure cannot be increased infinitely, and it needs to be adjusted to the appropriate pressure. The bending pressure is directly proportional to the thickness of sheet metal and inversely proportional to the width of the lower die rabbet. In actual bending, the thickness of sheet metal is set, and the width of lower die rabbet is selected according to the thickness of sheet metal. Therefore, bending pressure is a constant determined by other factors. The bending radius can be free of pressure.

5. The low bending die: the width of the lower die rabbet is related to the thickness of the sheet metal, and there is a corresponding relationship. In practice, the greater of the thickness, the more of the bend fillet.

V groove selection

Thin plate: 1-3mm groove selection rule is 4-6 times of material thickness.

Thick plate: 4-10 mm groove selection rule is 8-10 times of material thickness

The smaller the groove width is, the smaller the R angle after folding is, and the greater the bending pressure is required. The larger the groove width is, the larger the R angle is, and the smaller the bending pressure is required.