共查询到15条相似文献,搜索用时 62 毫秒
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提出了一种新复合微细电火花加工方法,通过工件的微幅激振改善加工条件,提高放电加工脉冲利用率和微细孔加工的深径比。介绍了实验装置的构成,并给出了初步试验结果。 相似文献
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加工特长锥孔会遇到排屑困难的问题 ,导致孔的加工精度差、表面粗糙度值高等缺陷 ,通过对电极结构分析 ,提出了中空电极的专用结构 ,并通过实例验证此结构合理可行 ,由此推广到其它深孔(腔)加工 ,都可采用中空电极进行加工 相似文献
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It is difficult to drill high aspect ratio through holes and complex shaped blind holes using micro EDM. The debris concentration in the narrow discharge gap causes abnormal discharges leading to excessive electrode wear and lower machining precision. In micro EDM, the electrode size is too small for internal flushing. This paper presents a new approach for effective self-flushing using planetary movement. Through micro holes with an aspect ratio of 18 have been drilled. This approach is also demonstrated by drilling blind noncircular micro holes with sharp corners and edges. The process performance characteristics are analyzed under different machining conditions. 相似文献
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This paper describes improvement of machining characteristics of electrical discharge machining of deep slots using a tool electrode which has micro holes for jetting dielectric liquid over the working surface. The tool electrode was made by the diffusion bonding of two copper plates, over an interface on which micro grooves for jetting the dielectric fluid were formed using electrolyte jet machining. In conventional machining, it is difficult to drill micro holes at the end of a slim electrode and circulate the dielectric fluid from the other end. Hence a solid tool electrode is used and periodically lifted up during machining to flush debris particles out of the discharge gap. Use of the newly developed tool electrode was found to shorten the processing time and improve machining accuracy significantly compared with the conventional solid tool electrode. Since the holes are micro, the outlet shapes are not replicated onto the bottom surface of the slot machined. 相似文献
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