曼哈特（广东）数控机床有限公司如何在折弯过程中减少应力？

Reducing stress is crucial during the bending process, as excessive stress can lead to material cracking, deformation, or other quality issues. Here are some methods to reduce stress during the bending process:
1. * * Optimize bending process * *: By optimizing the bending process, stress concentration can be reduced. For example, adding pre bending steps, adjusting the bending sequence, or adopting a gradual bending method can make the material more evenly stressed during the bending process.
2. * * Choose the right mold and fixture * *: Choosing the right mold and fixture is crucial for reducing stress. Ensure the accuracy and flatness of molds and fixtures to reduce friction and stress concentration during the bending process of materials.
3. * * Control bending speed and force * *: Properly controlling bending speed and force can effectively reduce stress. Excessive bending speed may lead to uneven force distribution of the material, while excessive force may cause excessive stretching of the material. Therefore, it is necessary to adjust the bending speed and force reasonably based on the properties and thickness of the material.
4. Material preheating treatment: For certain materials, preheating treatment can reduce their hardness and brittleness, thereby reducing stress during bending. The preheating temperature should be selected based on the type and properties of the material to avoid damage caused by excessively high or low temperatures.
5. * * Optimizing Material Selection * *: Selecting materials with good plasticity and toughness can reduce stress during the bending process. Meanwhile, it is important to avoid using materials with internal defects or unstable quality.
6. * * Reasonable design of sheet metal structure * *: By designing the shape and structure of the sheet metal reasonably, stress concentration can be avoided. For example, adding rounded corners, optimizing bending radii, or using reinforcement ribs can improve the bending strength and stability of sheet metal.
7. Lubrication and Reducing Friction: During the bending process, the appropriate use of lubricants can reduce the friction between the mold and the material, thereby reducing stress. At the same time, regularly cleaning molds and fixtures to keep their surfaces smooth can also help reduce friction and stress.
In summary, by optimizing the bending process, selecting appropriate molds and fixtures, controlling bending speed and force, material preheating treatment, optimizing material selection, designing sheet metal structures reasonably, and lubricating and reducing friction, the stress during the bending process can be effectively reduced, and product quality and production efficiency can be improved.