碳纤维复合材料导管叶片模压模具设计

MOLD DESIGN OF CARBON FIBER COMPOSITE PROPELLER BLADE USED FOR COMPRESSION MOLDING

复合材料导管叶片因具有耐腐蚀、高比强度、声阻尼性能优越等传统金属合金制造导管无可比拟的优点,在航空航天和船舶运输领域具有广阔的应用前景。在众多影响复合材料导管叶片成型的因素中,模具设计尤为重要,而目前高生产效率和高精度复合材料导管叶片的模具结构设计面临很多挑战。结合碳纤维复合材料膨胀系数等因素选取超殷钢作为型腔材料,根据装配要求确定了叶片毂头的三个基准,并对模具的型腔进行了整体顶出分块拆卸脱模结构设计,成功组装了模压模具并成型了复合材料导管叶片,证明了设计的可行性与正确性,解决了复合材料叶片模具难以脱模,影响生产效率的问题。

Composite propeller has obvious advantages compared to traditional metal propeller such as resistant corrosion,high specific strength and excellent acoustic damping performance. There are immeasurable application prospects in the aerospace and ship vessel. The design of mold plays a capital and irreplaceable role in variety of factors about composite propeller molding. The physical design exists many challenges for the high production efficiency and precision. The super invar was selected as the material of mold cavity according to the forming factors of carbon fiber composite,such as the expansion coefficient. Three criterions of the propeller blade hub were determined based on the requirement of assembling. Then,the cavity of mold was designed that was pushed out integrally and separated into several parts during the demolding. Finally,the mold of the blade was assembled and the composite propeller blade was fabricated,which prove the correction and feasibility of this design. The difficulties of forming and demolding about the composite are solved.