优质高效砂型/芯复合成形工艺研究  

Study on the Technology of High-quality and High-efficiency Sand Mold/Core Hybrid Forming

作　　者：刘丽敏[1] 单忠德[1] 杨颜绮 顾兆现[1] LIU Limin;SHAN Zhongde;YANG Yanqi;GU Zhaoxian(State Key Laboratory of Advanced Forming Technology and Equipment,China Academy of Machinery Science and Technology,Beijing 100044,China)

机构地区：[1]机械科学研究总院先进成形技术与装备国家重点实验室

出　　处：《铸造技术》2019年第12期1281-1285,共5页Foundry Technology

基　　金：高档数控机床与基础制造装备(2018ZX04044-001);国家杰出青年科学基金资助项目(51525503)

摘　　要：基于无模铸造精密成形技术提出了一种数字化砂型挤压切削一体化复合成形方法,选取两个典型件作为研究对象,研究了砂型挤压成形数字化建模,优化了切削成形路径;通过实验对比研究了砂型切削成形工艺和砂型挤压/切削复合成形工艺。结果表明,砂型挤压/切削复合成形工艺所获砂型的节砂量约34%~39%,节时约50%~55%,验证了砂型挤压/切削复合成形工艺可作为优质、高效、绿色砂型制造方法。Based on the precision forming technology of patternless casting,a digital hybrid forming method of sand mold extrusion cutting was proposed,two typical parts were selected as the research object to study the digital modeling of sand extrusion forming and optimize the cutting forming path.The sand mold cutting forming process and sand mold extrusion/cutting hybrid forming process were studied by experiments.The results show that the sand saving amount and time-saving of the sand was about 34%~39% and 50%~55%,respectively.It is proved that the sand mould extrusion/cutting hybrid forming process can be used as a high quality,efficient and green sand mould manufacturing method.

关 键 词：无模铸造精密成形技术 砂型挤压/切削复合成形工艺 数字化建模 成形路径优化 节砂量 

分 类 号：TG242[金属学及工艺—铸造]