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A desktop multiprocess machinery has been designed that has two concepts: miniaturizing of machine tool and multiprocessing with a same machine tool. The prototype of desktop multiprocess machinery is developed in this study. This is tabletop size machine tool that has five changeable machining heads. Outline of main body and machining head are presented.In order to know the basic accuracy of desktop multiprocess machinery, experimental evaluation is carried out. Machining head setting error, stiffness of multiprocess machinery and straightness of X, Y, Z stage is measured. To study the basic performance of desktop multiprocess machinery, a complex machining experiment is carried out with the developed machine tool. The complex machining consists of three steps: electrode machining by milling, hole shaping by EDM, and hole finishing by ECM. These steps are performed in sequence on the same machine tool. The complex machining is successfully carried out. In order to evaluate the desktop multiprocess machinery from environmental point of view, machining energy, volume of machining liquid, and installation space of desktop multiprocess machinery are measured. The measured values are compared with estimated values with conventional machine tools. The machining energy, the volume of machining liquid, and the installation space of desktop multiprocess machinery are smaller than those of conventional machine tool. 相似文献
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Modelling of ECM and EDM processes 总被引:3,自引:0,他引:3
The modelling of ECM and EDM processes requires not one but several models to simulate the different phenomena that occur during machining. This paper reviews the models that have been developed to simulate each of these phenomena, e.g. potential models to calculate the current density distribution in ECM, thermal models for the plasma arc in EDM, moving boundary models to simulate the anodic dissolution in ECM and probabilistic models to determine the discharge location in EDM. In addition to discussing the relative merits of the techniques deployed in these models, the paper describes some salient applications and concludes with desirable future enhancements to these models. 相似文献
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采用电火花电解(EDM/ECM)复合加工方法进行割缝加工时,加工效率和割缝宽度作为评价复合加工割缝的两个重要指标,但在实际加工过程中往往难以同时达到要求。使用自行研制的水包油工作液,利用单因素法探究电火花电解复合加工时工艺参数(电流、脉冲宽度、脉冲间隙、电极盘转速)对复合加工效果的影响规律,并通过正交实验分析不同工艺参数对电火花电解复合加工的影响程度,确定最佳工艺参数组合。最终通过正交试验,综合考虑加工效率及缝宽这两个评价指标选择缝宽最优1(A1B1C3D1),即确定工艺参数组合电流40A,脉冲间隙10μs,电极盘转速400r/min,脉冲宽度44μs为水包油工作液复合加工的最优参数。 相似文献
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State of the art electrical discharge machining (EDM) 总被引:2,自引:0,他引:2
Electrical discharge machining (EDM) is a well-established machining option for manufacturing geometrically complex or hard material parts that are extremely difficult-to-machine by conventional machining processes. The non-contact machining technique has been continuously evolving from a mere tool and die making process to a micro-scale application machining alternative attracting a significant amount of research interests.In recent years, EDM researchers have explored a number of ways to improve the sparking efficiency including some unique experimental concepts that depart from the EDM traditional sparking phenomenon. Despite a range of different approaches, this new research shares the same objectives of achieving more efficient metal removal coupled with a reduction in tool wear and improved surface quality.This paper reviews the research work carried out from the inception to the development of die-sinking EDM within the past decade. It reports on the EDM research relating to improving performance measures, optimising the process variables, monitoring and control the sparking process, simplifying the electrode design and manufacture. A range of EDM applications are highlighted together with the development of hybrid machining processes. The final part of the paper discusses these developments and outlines the trends for future EDM research. 相似文献
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介绍了电火花成型机床加工冲模中子程序的构成与调用等内容,通过使用子程序编制加工程序,可使加工程序简短灵活,对现实加工具有一定的指导意义. 相似文献
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脉冲电源是微细电加工的一个重要研究方向,其性能指标直接影响加工精度和表面质量,从微细电火花加工和微细电解加工用的脉冲电源两方面出发,介绍其主要研究方向及国内外发展现状,并详细分析了其工作原理. 相似文献
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Electrochemical superabrasive machining of a nickel-based aeroengine alloy using mounted grinding points 总被引:3,自引:0,他引:3
Brief design and manufacture considerations are detailed for a hybrid electrochemical grinding unit adapted from a vertical machining centre using a 40,000 rpm spindle and 500 A DC generator. Subsequently, experimental work is presented on the influence of tool bond systems, superabrasive grit type and electrical parameters when simultaneous ECM/grinding Udimet 720 using 10-15 mm diameter plain points. Single layer electroplated CBN tools produced G-ratios and maximum normal cutting forces of ∼451 and ∼45 N, respectively, compared to ∼128 and 557 N for equivalent diamond wheels. Data on workpiece roughness and overcut are also presented as are initial results for a fir tree shaped tool. 相似文献
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列举了模具企业中电火花加工存在的常见误区,针对这些误区进行了技术探讨,对模具企业电火花加工具有指导意义. 相似文献
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介绍了一种非导电材料电加工机床,采用熔融金属的高速粒子流喷在基体表面产生导电覆层,利用移动式导电橡胶接入阳极到待加工件,非导电材料在喷涂覆层后,电流瞬间击穿覆层,在微小环境内产生高温高压和气蚀,将材料剥离工件表面。操作简单实用,可在普通电火花加工机床的基础上改造而成,对非导电材料加工方便实用。 相似文献
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在电火花加工中要降低各种干扰因素的影响,确保加工质量和稳定的加工过程,放电间隙的一致性是非常重要的一个技术指标。详细分析了影响放电间隙状态变化的因素,提出了维持放电间隙大小一致性的相应措施,对进一步改善电火花加工质量具有一定的参考价值。 相似文献
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