共查询到20条相似文献,搜索用时 93 毫秒
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穿丝孔的选择和加工直接影响线切割的加工质量与效率,针对目前的自动编程软件缺少穿丝孔自动编程功能,本文介绍了穿丝孔的自动编程开发与应用。根据线切割零件加工图纸,通过高级语言编程读取图形信息,结合穿丝孔工艺位置要求计算出孔心坐标值,经人机交互界面输入加工穿丝孔的工艺要求后,自动生成加工穿丝孔的CNC文件。 相似文献
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数控快走丝电火花线切割加工工艺方法研究 总被引:3,自引:0,他引:3
通过对数控快走丝电火花线切割加工中如何加工穿丝孔、装夹工件、编制程序、选择电参数、使用工作液、应用多次切割工艺方法以及诊断加工故障等工艺方法进行研究。形成了一套完整的工艺方法,效果良好。 相似文献
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线切割加工中防止电极丝断丝的方法 总被引:1,自引:0,他引:1
线切割加工中防止电极丝断丝的方法电极丝断丝一直是线切割加工的工艺难题之一。断丝使加工中断,浪费大量工时,且会破坏加工表面的完整性,增加了实现无人操作和自动化加工的困难。放电脉冲频率的明显增加是断丝的先兆信号,断丝的直接原因是输入的热负荷增加并集中于一... 相似文献
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傅志泉 《机械工人(冷加工)》1999,(1)
断丝问题一直是线切割机加工工艺中严重的问题之一,它使加工停顿,浪费大量工时,破坏了加工表面的完整性。因此,研究断丝的原因和防止断丝的方法,一直是国内外线切割工艺所关心的问题。 据有关文献记载,放电脉冲频率的明显增加可作为断丝的先兆信号。断丝的直接原因是输入的热 相似文献
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对高速走丝线切割机床与低速走丝线切割机床的加工工艺方法进行分析。在高速走丝机床上,采用二次切割加工工艺,提高其加工工件的技术指标,使之接近或达到低速走丝机床的技术参数。 相似文献
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蔡美富 《精密制造与自动化》2015,(1)
通过对磨削螺纹原有加工工艺分析,提出了一种新的螺纹磨削工艺螺纹变距加工,并设计了基于SIEMENS828D的加工程序。以达到提高螺纹丝杆精度的目的;运用R参数编程,在只改变参数值的情况下,就可加工不同螺距的丝杆。 相似文献
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磨削是目前工程陶瓷的主要加工方法 ,本文以陶瓷材料的物理、力学性能为依据 ,应用模糊数学中的模糊综合评判原理 ,建立了工程陶瓷材料磨削加工性的二级模糊综合评判模型 ,提出了一种对工程陶瓷材料磨削加工性进行综合评判的新方法。选择陶瓷材料的 3个力学性能参数构成因素集合 ,根据提出的评判方法 ,对 4种典型工程陶瓷材料的磨削加工性进行评价 ,并根据综合评价指标进行排序。结果表明 ,该方法的评判结果合理 ,评价方法易于运用计算机来处理 ,简单实用。此方法将工程陶瓷材料的可加工性的评价建立在材料性能参数分析的基础上 ,在磨削加工之前确定材料的磨削加工性。评价结果对工程陶瓷材料的加工过程中工具和工艺参数的确定具有重要指导作用。 相似文献
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Renjie Ji Yonghong Liu Ruiqiang Diao Yanzhen Zhang Fei Wang Baoping Cai Chenchen Xu 《The International Journal of Advanced Manufacturing Technology》2014,75(9-12):1743-1750
Electrical discharge machining (EDM) is the extensively used nonconventional material removal process for machining engineering ceramics provided they are electrically conductive. However, the electrical resistivity of the popular engineering ceramics is higher, and there has been no research on the relationship between the EDM parameters and the electrical resistivity of the engineering ceramics that can be machined effectively by EDM. This paper investigates the effects of the electrical resistivity and the EDM parameters on the EDM performance of ZnO/Al2O3 ceramic in terms of the machining efficiency and the quality. The experimental results showed that the electrical resistivity and the EDM parameters such as pulse on-time, pulse off-time, and peak current had the great influence on the machining efficiency and the quality during electrical discharge machining of ZnO/Al2O3 ceramic. Moreover, the electrical resistivity of the ZnO/Al2O3 ceramic, which could be effectively machined by EDM, increased with increasing the pulse on-time and peak current and with decreasing the pulse off-time, respectively. Furthermore, the ZnO/Al2O3 ceramic with the electrical resistivity up to 3,410 Ω cm could be effectively machined by EDM with the appropriate machining condition. 相似文献
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Lei Zheng Baowei Wang Baofu Feng Chao Gao Juntang Yuan 《The International Journal of Advanced Manufacturing Technology》2011,56(5-8):421-427
Laminated ceramic composite armors made of engineering ceramics, fiber-enforced composite, and lightweight alloy are expected to be used widely in armor protection area. However, secondary machining is still a problem for the distinct properties of composing materials, and up to now, few reports can be found out about machining technology. In this work, an experimental study on drilling a typical laminated ceramic composite armor by using a special sintering diamond thinwall trepanning tool has been carried out deeply. To improve the machining efficiency, process parameters including the spindle speed and the axial force have been optimized through drilling experiments. Moreover, the three phases of the whole drilling process of the typical ceramic composite armor is proposed, and the machining mechanism and chip forms in each phase have been analyzed. Also, diamond tool skidding phenomena whether at hole exit or during drilling middle engineering ceramics have been explored, and the skidding mechanisms are presented. In addition, the surface quality of a hole wall machined has been studied, and an advisable measure is given. Results achieved in this paper can provide a technical base for diamond trepanning tool drilling similar laminated ceramic composite armors. 相似文献