This paper discusses the design content and numerical simulation method of precision forming process of scraper conveyor sprocket.According to the structure characteristics and forming requirements of sprocket forgings,the design of punch,sleeve,die,mandrel and fixed plate is introduced.The numerical sim-ulation of sprocket precision forming was carried out by using DEFROM-3D finite element analysis software.Three sets of schemes were designed according to different billets and corresponding finite element models were established.The results show that the distribution of stress field of forging is not uniform,and it de-creases first and then increases from the tooth to the core.The forming load of 1# tubular billet is the least,but the billet height-diameter ratio is large,which is easy to produce longitudinal bending.The forming load of 2# tubular billet is small,but the stress is concentrated,which affects the mechanical properties of forging.3# solid billet has the largest forming load,relatively uniform stress distribution and stable strain.It can be concluded that cylindrical solid billet is preferred in sprocket precision forming process.
关键词
刮板输送机/精密成形工艺/套筒/有限元模型
Key words
scraper conveyor/precision forming process/sleeve/finite element model
维普
万方数据