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钣金工作图在制品生产过程中占着很重要的地位，文中对空间飞行器的支架类钛金件弯曲部分的下料展开图的剪切角度计算进行了分析，得出了一般的计算公式，为实际生产化司类零件的展开角度计算提供了有益的依据。
Sheet metal work charts occupy an important position in the production of articles. In this paper, the shear angle calculation of the unwinding plan of the spacecraft titanium alloy bracket is analyzed, and the general formula is obtained. It provides a useful basis for calculating the deployment angle of the actual production department.