共查询到19条相似文献,搜索用时 314 毫秒
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本文分析了我国深孔加工技术的现状,概述了本所近几年来在中小直径深孔加工技术方面的研究新成果,还专门介绍了深孔加工技术用于回转体零件短孔的集约加工。 相似文献
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介绍了一种新型深孔零件的加工技术,利用数控机床精度高的优点和枪钻技术良好的加工特点,实现了在数控车床上加工深孔零件的目标,既保证了深孔的加工精度,也丰富了深孔加工方法,提高了设备的利用率. 相似文献
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主要分析了强力珩磨技术的工艺特点及技术关键,通过强力珩磨技术在钛合金和沉淀不锈钢精密深孔加工中的应用,指出强力珩磨技术是解决难加工材料精密深孔加工的主要途径之一,是难加工材料深孔精密、高效加工技术. 相似文献
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主要分析了强力珩磨技术的工艺特点及技术关键,通过强力珩磨技术在钛合金和沉淀不锈钢精密深孔加工中的应用,指出强力珩磨技术是解决难加工材料精密深孔加工的主要途径之一,是难加工材料深孔的精密、高效加工技术。 相似文献
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结合干式切削加工的特点和深孔加工的特性,提出了将干式切削技术应用于深孔加工的设想,制定了运用低温冷风冷却、排屑及切削液雾化润滑刀具的亚干式深孔加工方法,并对其工作原理及在深孔加工中的具体运用进行了系统的分析和探讨,从而使干式切削技术的应用范围更广泛。 相似文献
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20世纪深孔加工技术的兴衰及新突破--介绍SIED深孔加工集成技术 总被引:3,自引:0,他引:3
回顾20世纪深孔加工技术的兴起及其对国际制造业的贡献。剖析20世纪80年代后深孔加工技术出现停滞衰落的症结。简要介绍SIED技术,展望21世纪深孔加工技术的发展和应用前景。 相似文献
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随着制造业的复苏,对深孔装备的迫切需求与其设计理论滞后的矛盾日趋激烈。本文在分析与总结一种新型高效高精度深孔钻的设计理念的基础上,利用创新设计的理论诠释了深孔钻设计理论的重大突破-SIED(Single—tube Inner Chip—removal Ejector Drill)技术的实现过程。 相似文献
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通过对薄壁管有芯冷弯成型工艺的试验研究 ,提出一种对称式球窝芯棒结构。该芯棒不仅结构简单 ,易于制造 ,成本低廉 ,寿命长 ,而且使薄壁管 (壁厚≤ 1.2mm)能在小弯曲半径 (R/D =1.1)下良好弯曲。 相似文献
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Qiu Mingbo Han Yunxiao Zhang Chao Chen Haoran Hui Zhiguang 《Machining Science and Technology》2019,23(2):249-263
This paper studies the energy distribution in cool electrode of electrical discharge machining (EDM) on the basis of the wave-particle duality of matter. First, the movement of electrons and ions in the discharge channel was investigated in this article through the wavelength calculation of particles in a discharge channel. The main characteristic of electrons is wave and the moving form is prioritized for diffraction. Ions are mainly characterized by particles. These ions continuously vibrate in the mean free path. Second, a numerical calculation model is proposed on the basis of particle movement. The temperature field in the discharge channel of the cool electrode in the EDM to the titanium alloy is examined using the ANSYS software and simulation result is validated experimentally. Experimental results show that the diameter of the electric corrosion pit on the cool electrode surface is 355?μm, which is less than the electric corrosion pit diameter of 470?μm on a conventional electrode surface. Eventually, the EDM experiment was carried out under the same processing conditions with the cool electrode and the conventional electrode, respectively. The result shows that using cool electrodes in EDM can reduce electrode wear and increase machining efficiency. 相似文献
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本文从Fuzzy可靠性的基础上.应用模糊数学的原理和方法,建立了n单元同指数分布的冷贮备系统模糊可靠性的公式. 相似文献
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M. M. Okasha N. Driver P. T. Mativenga L. Li 《The International Journal of Advanced Manufacturing Technology》2012,61(1-4):213-225
Despite considerable research effort being concentrated on improving hole quality, minimisation of burrs still remains a key challenge in mechanical microdrilling of ductile materials. Recently, a sequential laser-mechanical microdrilling technique, which was developed by the authors, has proved effective in improving tool life and reducing burr size. The improvement in burr size was achieved by means of laser predrilling a pilot hole before utilising a twist drill to finish the hole. This paper presents further development of the sequential laser-mechanical microdrilling process based on negative-tapered laser-drilled pilot holes. In the sequential laser-mechanical microdrilling process, although a large predrilled hole reduces the burr size, it has a negative effect on roundness and cylindricity of the hole. The results of further studies highlight that a smaller entry hole size supports the drill and suppresses tool wander which, in turn, improves hole cylindricity. Furthermore, a larger exit hole size significantly reduces burr size. Compared to pure mechanical drilling without any pilot hole, the reduction in burr size for the mechanical microdrilling of near zero tapper and negatively tapered laser-predrilled holes was observed to be 2.5 and 6 times, respectively. Moreover, the mechanical finishing of these holes does not compromise tool life and/or surface integrity. Thus, the use of a negative taper laser-predrilled hole presents a significant improvement in burr control in microdrilling of nickel-based super alloys in addition to providing a step change increase in tool life. 相似文献
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用液压同步提升技术安装特大龙门起重机 总被引:2,自引:0,他引:2
液压同步提升技术是满足超大型、超高空提升结构的工程需求而发展的新型现代施工技术,文章结合工程实例介绍该技术在特大型龙门起重机安装工程中的应用,且详细地阐述了特大型龙门起重机安装方法和步骤。 相似文献