In the design of sheet metal chassis shell, in addition to giving full play to its characteristics and advantages, we should also avoid the adverse impact of sheet metal processing technology on its shape. We should pay attention to the following matters.

钣金机箱是指利用特殊的钣金材料制作而成的机箱，多应用于汽车工业、通信、医疗器械、电子电器等领域。钣金具有重量轻、强度高、导电、成本较低、易于批量生产等特点，但其独特成型工艺对造型的限制也比较大。

Sheet metal chassis refers to the chassis made of special sheet metal materials, which is mostly used in the automotive industry, communications, medical devices, electronic appliances and other fields. Sheet metal has the characteristics of light weight, high strength, conductivity, low cost and easy mass production, but its unique molding process also has great restrictions on modeling.

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 selection of gap and edging method should be cautious and reasonable. If t=2.0 or less, the gap is 0.2; Between t=2-3, the gap is 0.5; The way of wrapping edges should be the way of wrapping long edges around short edges (i.e. door panels).

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 overall dimension: it is 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. Tear, press riveting, tooth extraction, punch bump (bag) and other positions and directions, and draw the sectional view.

6、核对其材质，板的厚度，以及板厚的公差。

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

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) should 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 that are prone to errors (such as similar asymmetries) should be highlighted.

9、尺寸较多的地方要加上放大之后的图片。

9. Enlarged pictures should be added where there are many sizes.

10、需要进行喷涂保护的地方应该表示出来。

10. Areas requiring spray protection should be indicated.

山东快速成型厂家提醒您，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。

Shandong rapid prototyping manufacturers remind you that 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 rich 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, in line with people's aesthetics.

钣金机箱外壳设计中应注意几个事项就是以上所讲解的内容了，除此之外您应该在日常中好好维护保养http://www.metferro.com，已增加该产品的使用寿命。

Several matters that should be paid attention to in the design of sheet metal chassis shell are the contents explained above. In addition, you should take good care of it in daily maintenance http://www.metferro.com , which has increased the service life of the product.