1. Simple forming bending method
The flat sheet forms bending overflow through appropriate cutting, forms bending surfaces at various angles through the stamping of concave convex cutter, surrounds each bending bread in different boxes, and the joints are connected by full welding, spot welding, fillet welding or edge welding.
2. Die stamping method
For the processing of complex structure of chassis and cabinet, the traditional processing methods and processes can not be realized. This requires the manufacture of hardware molds. The cabinet with simple shape and small volume can be pressed and formed at one time through blanking die and forming die; The box with complex shape and large volume can be divided into several parts, which can be stamped and formed respectively, and then realized by spell welding, bolt connection, assembly and other methods.
3. Block welding repair wire method
For the cabinet with large volume and complex shape, it is a good way to save the processing cost by using the method of block processing, then splicing welding and wire repair. In block processing, pay attention to the process principle of segmentation to ensure the beauty and strength after splicing. The main segmentation principles are: a) the principle of large division and small Division: that is, the parts with large volume are divided into several parts with small volume (area) and spliced. b) Segmentation principle of different shape features: it is divided into several parts according to the constituent units of different shape features, processed separately, and spliced after Zui. c) Segmentation principle of closed shape features: for parts with closed shape features, they are mainly segmented from the edge of material shortage, or from the middle. d) Segmentation principle of intersecting features: parts with intersecting features shall be segmented along the intersecting line as far as possible. After processing and connection, there are many different connection modes in addition to welding. The joint is beautiful because it coincides with the dividing line, and no segmentation defects can be seen.
4. Comprehensive connection method
It is mainly used in the machining of variable cross-section sheet metal workpiece, especially some curved sheet metal machining. For general variable cross-section sheet metal processing, it is preferred to divide the surface into surface parts with different characteristics, and then classify and process the surface parts with different characteristics. For example, it is necessary to issue stamping die processing units, make simple processing tooling processing units, simple bending units, curve blanking poor processing units, etc., and then splice these units into a whole.
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