钣金机箱是指利用特殊的钣金材料制作而成的机箱，在钣金机箱外壳设计中，除了要发挥其特点优势，还要避免钣金加工工艺对其造型的不利影响，应注意以下几个事项。

Sheet metal case refers to the case made of special sheet metal materials. In the design of sheet metal case shell, in addition to giving full play to its characteristics and advantages, it is also necessary to avoid the adverse impact of sheet metal processing technology on its shape. The following matters should be noted.

1、钣金机箱外壳设计的展开方式一定要相当合理，要注意节省材料以及其加工性。

1. The unfolding method of the shell design of the sheet metal chassis must be quite reasonable, and attention should be paid to saving materials and its processability.

2、选择间隙及包边方式应该谨慎合理，T=2.0以下，间隙为0.2;T=2-3之间，间隙为0.5;包边方式应该采用长边包短边的方式(即门板类)。

2. The clearance and edging method shall be selected carefully and reasonably. The clearance is 0.2 when t = 2.0 or less; T = 2-3, the clearance is 0.5; The edge wrapping method shall adopt the method of wrapping the long side with the short side (i.e. door panel).

3、公差外形尺寸：负责走到底，正差走一半;孔形尺寸：走差走到底，负差走一半。

3. Tolerance outline dimension: responsible for going to the end, and half of the positive difference; Hole size: the deviation goes to the end, and the negative difference goes half.

4、毛刺方向。

4. Burr direction.

5、撕裂、压铆、抽牙、冲凸点(包)等位置方向，画出剖视图。

5. Draw a cross-sectional view of the position and direction of tearing, riveting, tooth extraction, punch bump (package).

6、核对其材质，板的厚度，以及板厚的公差。

6. Check the material, plate thickness and plate thickness tolerance.

7、注意特殊的角度，折弯角内半径(一般R=0/5)要试折而定将其进行展开。

7. Pay attention to the special angle. The inner radius of the bending angle (generally r = 0 / 5) shall be expanded according to the trial bending.

8、有易出错(比如相似不对称的地方)的地方应该提出。

8. Places prone to errors (such as similar and asymmetrical places) should be highlighted.

9、尺寸较多的地方要加上放大之后的图片。

9. Where the size is large, the enlarged picture shall be added.

10、需要进行喷涂保护的地方应该表示出来。

10. The places requiring spraying protection shall be indicated.

当然，因钣金的独特成型工艺导致其不宜有复杂的造型，所以在钣金机箱外壳设计上既要突破传统的方框造型，又要便于制造加工，不宜多做丰硕的曲面变化，比较适合多做表面工艺的处理，降低出产制造的难度，确保设计方案可行性的同时，使设备造型简洁美观，符合人们审美。更多相关内容就来我们网站http://www.metferro.com咨询了解吧。

Of course, due to the unique forming process of sheet metal, it is not suitable to have complex shapes. Therefore, in the design of sheet metal chassis shell, it is not only necessary to break through the traditional box shape, but also convenient for manufacturing and processing. It is not suitable to do more surface changes. It is more suitable to do more surface processing, reduce the difficulty of production and manufacturing, ensure the feasibility of the design scheme, and make the equipment shape simple and beautiful, and meet people's aesthetics. For more information, please visit our website http://www.metferro.com Consult and understand.