The invention discloses a double-curved-surface inclined rib skin-free composite material grid structure and a forming tool thereof. The grid structure comprises an upper end frame, a lower end frame,bidirectional inclined ribs, an upper ring rib, a middle ring rib and a lower ring rib, wherein the structure is made of a carbon fiber/epoxy resin composite material; the upper end frame, the lowerend frame, the two-way inclined ribs and the ring ribs are of an integrally-formed structure; the upper end frame and the lower end frame are L-shaped; the outer contour surface of the structure is ahyperboloid of one sheet of revolution; the center line of the outer contour surface of the bidirectional inclined rib is a straight line on the hyperboloid of one sheet of revolution; the bidirectional inclined ribs are mutually symmetrical, the positions of the symmetrical surfaces of the bidirectional inclined ribs are adjusted so as to enable the middle ring rib to be positioned in the middleof the integral structure; the center lines of the outer contour surfaces of the ring ribs are circles on the hyperboloid of one sheet, and the upper and lower ring ribs are evenly distributed in thedirection of the upper and lower end frames. The grid structure is reasonable in design, high in strength and low in weight; meanwhile, a corresponding forming device is designed in combination of theprocess forming, so that the forming device is easy to machine; and the forming process of the structure is simple, low cost and light weight of the structure are realized, and the structure is suitable for automatic batch production.
一种双曲面斜筋无蒙皮复合材料网格结构及其成型工装,包括上下端框、双向斜筋和上环筋、中环筋、下环筋,结构材料为碳纤维/环氧树脂复合材料;所述上下端框、双向斜筋、环筋为一体成型结构;上下端框均为“L”形;结构外轮廓面为回转单叶双曲面;双向斜筋外轮廓面中心线为回转单叶双曲面上的直线;双向斜筋相互对称,调整双向斜筋对称面位置,使中环筋位于整体结构中间;环筋外轮廓面中心线为单叶双曲面上的圆,上、下环筋沿上下端框方向均匀分布。本发明设计合理、高强度低重量;同时与工艺成型相结合,对相应的成形装置进行设计,使成形装置易于加工;使结构成型工艺简单,实现结构低成本、轻质化,并适合自动化批量生产。
Double-curved-surface inclined rib skin-free composite material grid structure and forming tool thereof
一种双曲面斜筋无蒙皮复合材料网格结构及其成型工装
2020-04-10
Patent
Elektronische Ressource
Chinesisch
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