尾顶座工装对超半球壳体多道次拉深旋压的影响  

Influence of Tailstock on Process of Multi-pass Draw-spinning of Hyper-hemispherical Shell

作　　者：谷建民[1] 刘建军[1] 林波[1] 李杰[1] 蔡伟[1] 方雷[1] 

机构地区：[1]中国工程物理研究院材料研究所,四川江油621908

出　　处：《机械制造与自动化》2016年第1期64-66,92,共4页Machine Building & Automation

摘　　要：设计了超半球壳体基于板坯多道次拉深旋压成形的芯模、旋轮和尾顶座等工装,并针对套轴式尾顶座和内孔定位式尾顶座进行了旋压工艺试验。结果表明,增大尾顶座型面顶部圆弧,增加平面过渡段和圆弧过渡段,可避免旋压工件顶部撕裂;降低芯模转速,调整进给比和降低道次减薄率,能够消除旋压成形过程中的旋压反挤和波纹缺陷。This paper designs the hyper-hemispherical shell based on different mandrels, milers and tailstock which are formed by the multi-pass draw-spinning of the plates and tests the sleeve＊axle and inner-hole-locate tailstocks. The result indicates that with augmenting the circular arc of tailstock top, tearing the top of spinning part can be avoided on the plane transition section and the circular arc transition section and the mandrels rotation speed is reduced, the feeding speed is adjusted and the reduction ratio is decreased, thus eliminating the backward extrusion and corrugation of spinning process.

关 键 词：旋压机 工装 多道次拉深旋压 超半球壳体 尾顶座 

分 类 号：TH136[机械工程—机械制造及自动化]