复合材料C型梁类零件变形控制工艺方法的研究

Research on deformation control technology of composite C beam parts

复合材料梁类零件是构成飞机骨架的主要构件,其几何外形多为C型结构,采用热压罐固化后,固化变形对零件外形精度及装配连接产生极为不利的影响。为了克服这种变形,本文选取某型机尾翼C型梁零件进行局部几何特征的提取和重构,形成特征信息,通过变形的反变形补偿方法制造特征试验件确定工艺补偿值,并最终实现模具型面的补偿修正。这是以变形预测结果为基础提出的一种变形控制方法,以成型中的反变形方式实现最终成型后的复合材料产品与期望的形状相一致。

Composite beam parts are the main components of aircraft frame, and their geometric shapesare mostly C-shaped structures. After curing by autoclave, the curing deformation has a very adverse effecton the shape accuracy and assembly connection of parts. In order to overcome this kind of deformation,this paper selects the C-beam part of the tail wing of a certain type of aircraft to extract and reconstruct thelocal geometric features, and forms the feature information. The process compensation value is determinedby the anti-deformation compensation method, and the compensation correction of the die surface is finallyrealized. This is a deformation control method based on the deformation prediction results. The final compositeproduct conforms to the desired shape by reverse deformation in the forming process.