钣金加工是钣金制品成形的一道重要的工序，钣金加工的主要工序有剪切、折弯扣边、弯曲成型等，在零件加工过程中避免零件的变形显得尤为重要。那么钣金加工存在误差问题?下面山东钣金制造厂家为你讲解。

Sheet metal processing is an important process of sheet metal product forming. The main processes of sheet metal processing include shearing, bending and edge buckling, bending and forming, etc. It is particularly important to avoid the deformation of parts in the process of part processing. Then there is an error problem in sheet metal processing? Next, Shandong sheet metal manufacturer will explain to you.

一、内力作用导致零件加工精度改变

1、 The machining accuracy of parts is changed due to internal force

车床加工时，通常是利用向心力的作用，用车床的三爪或者四爪卡盘，把零件卡紧，然后对钣金零件进行加工。同时，为了确保零件在受力时不松动、减小内径向力的作用，要使夹紧力大于钣金的切削力。夹紧力随着切削力的加大而加大，随之减小而减小。

When lathe is used for processing, it is usually to use the centripetal force to clamp the parts with the three jaw or four jaw chuck of the lathe, and then process the sheet metal parts. At the same time, in order to ensure that the parts are not loose when subjected to force and reduce the role of internal force, the clamping force should be greater than the cutting force of sheet metal. The clamping force increases with the increase of cutting force, and decreases with the decrease.

这样的操作才能使钣金零件在加工过程中受力稳定。但是，在三爪或者四爪卡盘松开后，加工出来的钣金零件就会与原来的相差甚远，有的呈现多边形，有的呈现椭圆形，出现较大偏差。

This operation can make the sheet metal parts stable in the process of processing. However, after the three jaw or four jaw chuck is loosened, the processed sheet metal parts will be far different from the original ones, some of which are polygonal, and some are elliptical, with a large deviation.

二、热处理加工后容易产生变形问题

2、 Deformation is easy to occur after heat treatment

对于薄片类的钣金零件，由于其长径非常大，在对其进行热处理后容易出现草帽弯曲的状况。一方面会出现中间鼓出的现象，平面偏差加大，另一方面由于各种外界因素的影响，使零件产生弯曲现象。

For sheet metal parts with thin sheets, due to their large length and diameter, straw hats are prone to bend after heat treatment. On the one hand, there will be bulge in the middle, and the plane deviation will increase. On the other hand, due to various external factors, parts will be bent.

这些变形问题的产生不仅是由于热处理后的零件内应力发生了变化，还有操作人员的知识不扎实，不太了解零件的结构稳定性，从而加大了零件变形的概率。

These deformation problems are not only caused by the changes in the internal stress of the parts after heat treatment, but also because the operators do not have solid knowledge and do not know much about the structural stability of the parts, thus increasing the probability of part deformation.

钣金加工存在哪些误差问题？从两个方面来讲解了一番，希望能够给您好的帮助，更多相关事项就来我们网站http://www.metferro.com咨询吧！

What error problems exist in sheet metal processing? I explained it from two aspects, and I hope I can help you. More related matters will come to our website http://www.metferro.com Consult!