常州亿创钣金加工厂专业从事精密钣金加工、激光切割加工为主的钣金加工型厂家

常州亿创钣金加工厂

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钣金加工的注意事项有哪些

2018-06-03 13:10:49 常州亿创钣金加工厂 阅读

随着社会的需要,于是市场上出现了很多的钣金加工行业,但是随着钣金行业的出现到现在的空前盛大的发展,对于钣金加工行业仍没有一个完整的定义。

钣金加工厂至今为止尚未有一个比较完整的定义,根据国外某专业期刊上的一则定义可以将其定义为:钣金是针对金属薄板(通常在6mm以下)一种综合冷加工工艺,包括剪、冲/切/复合、折、焊接、铆接、拼接、成型(如汽车车身)等。其显著的特征就是同一零件厚度一致。

钣金加工的注意事项:

1、展开方式要合,要便利节省材料及加工性。

2、合理选择问隙及包边方式,T=2.0以下问隙0.2,T=2-3问隙0.5,包边方式采用长边包短边(门板类)

3、合理考虑公差外形尺寸:负差走到底,正差走一半;孔形尺寸:正差走到底,负差走一半。

4、毛刺方向。

5、抽牙、压铆、撕裂、冲凸点(包),等位置方向,画出剖视图。

6、核对材质,板厚,以板厚公差。

7、特殊角度,折弯角内半径(一般R=0.5)要试折而定展开。

8、有易出错(相似不对称)的地方应重点提示。

9、尺寸较多的地方要加放大图。

10、需喷涂保护地方须表示。

With the needs of the society, there are a lot of sheet metal processing industry in the market, but with the emergence of the sheet metal industry to the unprecedented grand development, there is still no complete definition for the sheet metal processing industry.

Sheet metal processing plant has so far not yet had a more complete definition. According to a definition in a foreign professional journal, it can be defined as: sheet metal is a comprehensive cold processing technology for sheet metal (usually below 6mm), including shearing, punching / cutting / composite, folding, welding, riveting, splicing, forming (such as car body). Wait. The notable feature is the same thickness of the same parts.

Attention to sheet metal processing:

1, the way of expansion should be combined, so as to save materials and workability.

2, reasonable choice of gaps and wrapping methods, T=2.0 below the gap 0.2, T=2-3 ask gap 0.5, the way of wrapping long edge package short edge (door type)

3, reasonably consider the tolerance dimension: the negative difference goes to the end, the positive error goes half; the hole size: the positive error goes to the end, the negative difference walks half.

4. The direction of the burr.

5, draw teeth, press riveting, tearing, bump bump (package), etc. position direction, draw a sectional view.

6, check material, plate thickness, plate thickness tolerance.

7. Special angle, the radius of the bending angle (general R=0.5) should be expanded.

8, where errors are prone (similar asymmetry) should be highlighted.

9, the larger size of the place to add a big picture.

10, the need to spray protection must be expressed.


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