钩舌通用高精度外型工艺设计与应用

Design and Application of Universal and High-Precision Metal Mold for K nuckles

根据钩舌结构特点,利用三维建模方法进行了钩舌铸造新工艺的研究。新工艺采用通用外型设计,型芯内包工艺形成钩舌铸件本体。通过现场生产试验,比较了新旧工艺的优缺点。结果表明:钩舌通用外型设计可提高钩舌铸件的精度,实现不同钩舌的快速换产,提高生产效率,降低生产成本。

According to the structural characteristics of knuckle,the casting process for the coupler knuckles to replace the traditional one was designed by using three-dimensional modeling method.The improved casting process adopted the universal external metal mold and the core-in-package process to form the knuckle castings.The trial production were carried out to compare the advantages and disadvantages of the improved and traditional processes.The results show that the application of the universal external metal mold to the improved casting process not only improves the dimensional accuracy of the coupler knuckle castings,but also increases the production efficiency and reduces the production cost due to the rapid replacement of different coupler knuckles.