线电极电火花磨削运丝系统设计及线电极有效加工区位置波动的试验
发布时间：2018-10-13 12:04
【摘要】：为了减小线电极电火花磨削中线电极有效加工区位置的波动,建立了运丝系统多自由度振动模型,分析了滚轮的直径和质量、相邻滚轮间线电极的材料、长度和直径对运丝系统振动固有频率的影响,将仿真分析结果用于指导运丝系统设计,以提高运丝系统的固有频率并减小线电极有效加工区发生振动的频率;通过试验研究了线电极运丝速度、线电极在导向轮上的包角及线电极张力对线电极有效加工区位置波动的影响规律,并用于确定最佳加工参数;同时,利用所设计的线电极磨削装置加工出直径为(50±1)μm的微细轴.结果表明,所设计的线电极磨削装置及试验获得的最佳加工参数可用于高尺寸精度的微细轴加工.
[Abstract]:In order to reduce the fluctuation of the position of the effective machining zone of wire electrode in wire electrode EDM, a multi-degree of freedom vibration model of wire transport system is established. The diameter and quality of roller and the material of wire electrode between adjacent rollers are analyzed. The effect of length and diameter on the natural frequency of wire feeding system is studied. The simulation results are used to guide the design of wire feeding system to improve the natural frequency of wire feeding system and to reduce the frequency of vibration in the effective processing zone of wire electrode. The influence of wire speed, the angle of wire electrode on the guide wheel and the tension of the wire electrode on the fluctuation of the position of the effective processing zone of the wire electrode are studied by experiments, and used to determine the best processing parameters, at the same time, The micro axis with diameter of (50 卤1) 渭 m was fabricated by using the designed linear electrode grinding device. The results show that the designed linear electrode grinding device and the optimum machining parameters obtained from the experiments can be used in the machining of micro shafts with high size and precision.
【作者单位】： 哈尔滨工业大学机电工程学院;中航通飞研究院有限公司第四研究室;
【基金】：国家高技术研究发展计划(863)项目(2007AA04Z345) 国家自然科学基金资助项目(51175120)
【分类号】：TG661
，
本文编号：2268550
[Abstract]:In order to reduce the fluctuation of the position of the effective machining zone of wire electrode in wire electrode EDM, a multi-degree of freedom vibration model of wire transport system is established. The diameter and quality of roller and the material of wire electrode between adjacent rollers are analyzed. The effect of length and diameter on the natural frequency of wire feeding system is studied. The simulation results are used to guide the design of wire feeding system to improve the natural frequency of wire feeding system and to reduce the frequency of vibration in the effective processing zone of wire electrode. The influence of wire speed, the angle of wire electrode on the guide wheel and the tension of the wire electrode on the fluctuation of the position of the effective processing zone of the wire electrode are studied by experiments, and used to determine the best processing parameters, at the same time, The micro axis with diameter of (50 卤1) 渭 m was fabricated by using the designed linear electrode grinding device. The results show that the designed linear electrode grinding device and the optimum machining parameters obtained from the experiments can be used in the machining of micro shafts with high size and precision.
【作者单位】： 哈尔滨工业大学机电工程学院;中航通飞研究院有限公司第四研究室;
【基金】：国家高技术研究发展计划(863)项目(2007AA04Z345) 国家自然科学基金资助项目(51175120)
【分类号】：TG661
，
本文编号：2268550
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