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傅晓锦 《江苏机械制造与自动化》2000,(2):18-20
在金属切削加工中,刀具的耐用度、工件的加工时间和加工表面粗糙度影响因素的确定是极其重要的,本文采用在工作矩阵中运用逐步回归技术,分别选出影响刀具的耐用度、工件的加工时间和加工表面粗糙度的最优因子区域,并获得最优预报及关系式。 相似文献
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介绍了纯水喷雾冷却技术在金属切削加工中的应用。纯水喷雾冷却技术是利用一定压力的压缩空气将纯水雾化后,喷向刀具与工件相互作用的切削区,对切削区进行冷却、润滑和冲洗,能极大改善切削状况和作业环境。与传统的冷却液浇注法相比,纯水喷雾冷却具有经济性好、绿色环保、加工表面质量好、刀具使用寿命长等优点。 相似文献
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随着经济迅速的发展,金属切削加工技术越来越受到人们的关注与重视,同时对我们的生产和生活也造成了巨大的影响。本文主要对金属切削加工中能够控制表面质量的主要因素进行探究,得到控制表面质量的方法,改善控制表面质量的技术方法。从而提高工件的加工效率,生产优质的产品以及能够获取最大的经济效益。 相似文献
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金属切削加工在机械制造专业人才培养体系中具有非常重要的作用.文章深入探讨了金属切削加工综合实验开设的必要性,并对教学方案的实验内容、测试方法及分析技术进行了研究,最后对整个教学过程进行预演和评估,希望能对机械制造类专业课程建设和改革提供一些参考. 相似文献
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H. Trabelsi E. Kannatey-Asibu Jr. 《The International Journal of Advanced Manufacturing Technology》1991,6(3):220-231
Pattern-recognition analysis of sound radiation was developed as a basis for monitoring the metal-cutting process. The sound-pressure
signals radiated during cutting under fixed conditions were recorded using a sharp tool, a worn tool and a broken tool. A
round bar of heat-treated AISI 4340 steel was machined in cylindrical turning, using a titanium-carbide-coated cutting tool.
The spectral components in the 0–10 kHz range were used as features. Using resubstitution, signals coming from sharp and worn
tools were easily distinguished, resulting in a 100% classification with just two features, being the average of the low (0–5
kHz) and high (5–10 kHz) frequency ranges. With tool breakage, two acceptable classifications were obtained using independent
testing, the first with a performance of 100%, 75% and 100% for sharp, worn and breakage signals respectively, using nine
features, and the second with 80%, 88% and 80%, using eight features. 相似文献
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Friction modelling in metal cutting 总被引:4,自引:0,他引:4
T.H.C. Childs 《Wear》2006,260(3):310-318
This paper reviews the experimental evidence for what is the nature of the friction contact between chip and tool during continuous chip formation and the historical development of friction models. It considers three separate circumstances of turning: at low speeds when lubricants can reduce friction by partial penetration of the chip-tool contact; at high speeds when thermal softening can provide self-lubrication; and at intermediate speeds when in some cases solid-lubricating inclusions from the work material can segregate in the chip-tool contact. It demonstrates, through numerical simulation of the turning process, shortcomings in a commonly used friction model and proposes an improved formulation. 相似文献
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S. G. Emel’yanov E. I. Yatsun A. I. Remnev S. V. Shvets 《Russian Engineering Research》2011,31(7):679-683
Chip curling in metal cutting is considered. A method is proposed for determining the dimensions of the dead zone at the cutter
tip on the basis of the chip’s geometric parameters. 相似文献