大型复合材料箱体成型模具设计  

Forming Mold Design of a Large-Scale Composite Container

作　　者：叶青[1] 陈博[2] 倪恒 寇晨 YE Qing;CHEN Bo;NI Heng;KOU Chen(Department of Mechatronics,Xijing University,Xi’an 710021;College of physics and Electronic Engineering,Xianyang Normal University,Xianyang 712000)

机构地区：[1]西京学院机电技术系,西安710021 [2]咸阳师范学院物理与电子工程学院,咸阳712000

出　　处：《宇航材料工艺》2021年第2期97-102,共6页Aerospace Materials & Technology

基　　金：陕西省重点研发计划项目(2018NY-158);西京学院校基金(XJ170131)。

摘　　要：为了制造合格的大型复合材料箱体,本文制定了箱体成型模具的设计和制造方案。某复合材料箱体属于大型长轴类产品,其成型模具挠曲变形及脱模力大。模具主体采用通长轴、周向辐板、轴向筋板和蒙皮组合的结构形式。模具通过无缝钢管、模具骨架及蒙皮形成的三维网状结构有效保证模具刚度,通过带斜度工作平面及变圆角设计大大降低脱模力,通过在顶出端使用更厚的钢板提升其在脱模时的可靠性。仿真结果表明,简支工况下模具最大应力值为42.9 MPa,最大变形量为0.51 mm;脱模工况下模具最大应力值为188.6 MPa,最大变形量为0.5 mm。根据模具结构制定了分别组焊、整体装配的加工工艺路线并完成了模具制造。仿真及模具实际使用结果表明,该模具满足复合材料箱体的生产需求。The design and manufacturing schemes of a large-scale composite container-forming mold were proposed in this research in order to obtain qualified container products.The studied composite container is a large long-axis product.And accordingly its forming mold often bears considerable release load and appears great flexure deflection during service.The composite container forming mold was designed as a main structure consisting of fulllength steel pipe,web plates along circumferential direction,reinforcement plates along circle direction and skin.The three-dimensional network structure composed of the seamless steel pipes,skeleton and skin was adopted to provide sufficient stiffness.The gradient fillets and smooth working surfaces with draft angle significantly decrease the release load.Besides,thicker steel plates were applied in the ejection end to improve the reliability of the forming mold in mold release process.The computer simulation results show that the maximum stress and displacement are respectively 42.9MPa and 0.51mm in simply-supported condition,meanwhile,the maximum stress and displacement are respectively 188.6MPa and 0.5mm in mold release condition.The composite container forming mold was manufactured according to the processing strategy of separate welding and subgroup assembling.It was concluded from the computer simulation and practical use results that the designed forming mold is able to meet the fabrication needs of the large-scale composite container.

关 键 词：复合材料 箱体 模具设计 仿真 工艺路线 

分 类 号：TB332[一般工业技术—材料科学与工程]