CFRP薄壁圆筒壳端面磨削工艺研究

Research on End Surface Grinding Process of CFRP Thin-Walled Circular Shell

阵列碳纤维复合材料管是由碳纤维增强复合材料(CFRP)薄壁圆筒壳阵列排布后粘接制备而成,兼具碳纤维复合材料和蜂窝结构的优异性能,是一种新型的可应用于深空探测反射面板的理想材料结构。由于材料和制备方面的特殊性,在阵列碳纤维复合材料管加工过程中会由于磨削力过大导致多种加工损伤,为其高效低损伤加工带来了挑战。本文开展CFRP薄壁圆筒壳磨削加工正交试验,系统研究磨削深度、切出角度、主轴转速、进给率对磨削力的影响规律和影响程度。研究结果表明:工艺参数对水平面合力的影响程度依次为进给率、磨削深度、切出角度、主轴转速,对轴向力的影响程度依次为切出角度、主轴转速、进给率、磨削深度。研究对阵列碳纤维复合材料管高效低损伤加工工艺的制订具有参考意义。

Carbon fiber reinforced polymer(CFRP)tube array is prepared by arranging and bonding CFRP thinwalled circular shells. It has the excellent properties of both CFRP and honeycomb structure,and is considered as a new type of ideal material for the reflective panel of deep space probe. Owing to the special characteristics of material and preparation,CFRP tube array may have a variety of machining damages due to the excessive grinding force in the machining process,which brings challenges to its high-efficiency and low-damage machining. Orthogonal tests for grinding CFRP thin-walled circular shells are carried out. The effects of the grinding depth,the cutting angle,the spindle speed,and the feed rate on the grinding force are studied systematically,and the influence degree of each machining parameter is analyzed. The test results show that the order of the influence degree on the horizontal resultant force from large to small is the feed rate,the grinding depth,the cutting angle,and the spindle speed,while the order of the influence degree on the axial force from large to small is the cutting angle,the spindle speed,the feed rate,and the grinding depth. This study has reference significance for the design of high-efficiency and low-damage machining process of CFRP tube array.