阅读说明：本技术 一种j字型复合材料加强筋的制造方法 (Manufacturing method of J-shaped composite material reinforcing rib ) 是由 王一奇 王强 侯晓峰 卜聪 高航 于 2021-04-08 设计创作，主要内容包括：本发明公开了一种J字型复合材料加强筋的制造方法,包括以下步骤：制备平面预制体；成型反C字型件预制体；成型反Z字型件预制体；拼合J字型复合材料加强筋；固化J字型复合材料加强筋。本发明通过一次铺放2-3层预浸料、多次铺放的方法制备碳纤维复合材料预制体,解决了逐层铺放成型效率低的问题。本发明将反Z字型件预制体分成两步成型,其中反Z字型件半成品配套模具的钝角设计使得在热隔膜成型中隔膜能够将预制体压实到模具表面而不产生架桥,克服了热隔膜成型在类深腔的结构中无法成型的问题。本发明通过真空袋法制备碳纤维复合材料平面预制体解决了预浸料层间有气泡问题,通过热隔膜成型方式解决了R角区域褶皱的产生的问题。(The invention discloses a manufacturing method of a J-shaped composite material reinforcing rib, which comprises the following steps: preparing a plane prefabricated body; forming a prefabricated body of the reverse C-shaped part; forming a reverse Z-shaped part prefabricated body; splicing J-shaped composite material reinforcing ribs; and curing the J-shaped composite material reinforcing rib. The carbon fiber composite material preform is prepared by a method of laying 2-3 layers of prepreg once and laying for multiple times, so that the problem of low forming efficiency of laying layer by layer is solved. The invention divides the prefabricated body of the reverse Z-shaped part into two steps for forming, wherein the obtuse angle design of the semi-finished product of the reverse Z-shaped part matched with the mould ensures that the diaphragm can compact the prefabricated body to the surface of the mould without bridging in the thermal diaphragm forming process, thereby overcoming the problem that the thermal diaphragm cannot be formed in the structure of the similar deep cavity. The invention solves the problem of air bubbles between prepreg layers by preparing the carbon fiber composite material planar preform through a vacuum bag method, and solves the problem of generation of wrinkles in an R-angle area through a thermal diaphragm forming mode.)