数控线切割钼丝抖动的工艺影响分析  

Process Impact Analysis of Molybdenum Wire Jitter in WEDM

作　　者：谢冬和 明瑞 李湾 蔡颂[2] 明兴祖[2] XIE Donghe;MING Rui;LI Wan;CAI Song;MING Xingzu(Department of Mechanical and Electrical Engineering,Hunan Automobile Engineering Professional College,Zhuzhou Hunan 412001,China;College of Mechanical Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China;Yichang Power Supply Company,Hubei Electric Power Company,Yichang Hubei 443000,China)

机构地区：[1]湖南汽车工程职业学院机电工程学院,湖南株洲412001 [2]湖南工业大学机械工程学院,湖南株洲412007 [3]国网湖北省电力有限公司宜昌供电公司,湖北宜昌443000

出　　处：《湖南工业大学学报》2019年第6期84-88,共5页Journal of Hunan University of Technology

基　　金：国家自然科学基金资助项目(51975192,51705141);湖南省自然科学基金资助项目(2018JJ5034,2019JJ40075)

摘　　要：对数控线切割机实施多次切割的工艺过程进行了分析,认为影响产品质量的主要原因是运行中钼丝的动态稳定性较差。影响钼丝动态稳定性能的主要因素,包括导轮的径向跳动及轴向窜动,储丝筒的径向跳动,上、下导轮间钼丝的抖动,绕丝时预紧力不均匀等,可采用隔断导轮跳动的传播路径、合理控制钼丝的运行速度、增设钼丝张紧装置等措施降低钼丝抖动。理论分析与试验结果表明,通过对数控线切割机床进行适当改进并且采用适当的工艺方法,在数控线切割机上可以实施多次切割工艺,且加工后的产品质量满足工艺要求。Based on an analysis which has been made of the multiple cutting process of CNC wire cutting machines,it is considered that the main reason affecting product quality is the poor dynamic stability of molybdenum wires in operation.The main factors affecting the dynamic stability of molybdenum wire are radial run-out and axial movement of guide wheel,radial run-out of wire storage cylinder,jitter of molybdenum wire between upper and lower guide wheels,uneven pre-tightening force during wire winding,etc.Measures to be taken to reduce the jitter of molybdenum wire include breaking off the transmission path of the runout of guide wheel,reasonably controlling the running speed of molybdenum wire,adding the tensioning device of molybdenum wire,etc.The theoretical analysis and experimental results show that the multiple cutting process can be carried out on WEDM machine by improving the CNC WEDM machine tool and adopting appropriate process methods,with the product quality meeting the requirements.

关 键 词：数控线切割机 钼丝运行 动态分析 工艺影响 

分 类 号：TG484[金属学及工艺—焊接]