1. Simple forming bending method

平的薄板通过适当的切割形成弯曲溢流，通过凹凸刀具的冲压形成各种角度的弯曲面，将各个弯曲面包围在不同的箱子里，接缝通过全焊接、点焊、角焊或边焊的方法连接。

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.模具冲压法

2. Die stamping method

对于机箱机柜复杂结构的加工，传统的加工方法和工艺是无法实现的。这就需要制造五金模具，通过落料模下料、成型模冲压成型形状简单、体积小的机柜可一次冲压成型；形状复杂、体积大的箱体，可分割成若干个零件分别冲压成型，再通过拼焊或螺栓连接、装配等方法来实现。

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.分块拼焊补丝法

3. Block welding repair wire method

对于体积大、形状复杂的机箱机柜，采用分块加工、然后在拼焊、补丝的加方法是节省加工成本的很好方法。分块加工注意分割的工艺原则保证分割加工后拼接后的美观性和强度，主要分割的原则有：a)大分小的分割原则：就是将体积较大的零件分割成若干体积（面积）较小的零件，进行拼接而成。b)不同形状特征的分割原则：就是按照不同的形状特征的构成单元，分割成若干零件，分别加工，Zui后拼接而成。c）封闭形状特征的分割原则：对于封闭形状特征的零件，主要从展开缺料边缘处分割，也可以中部分割。d)相交特征的分割原则：对于相交特征的零件，尽量沿相交线进行分割，加工接连后，除焊接方式联接外，还有多种不同的联接方式，接缝因与分割线重合而美观，看不出分割缺陷。

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.综合连接法

4. Comprehensive connection method

主要运用在变截面的钣金工件的加工，特别是一些曲面的钣金加工。一般变截面的钣金加工，需要将曲面分割成不同特征的曲面零件，再分别对不同特征的曲面零件进行分类加工，如需要开具冲压模具加工的单元，制作简易的加工工装加工的单元，简单折弯的单元、曲线下料贫寒加工的单元等，再将这些单元拼接成为整体。

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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