The Principle of Electric Hot Milling and Its Experimental Verification
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摘要: 提出了一种通电加热铣削方法,介绍了其基本原理与实验装置。通过试验及分析用小波变换处理采集到的振动信号来证明这种方法能够大幅降低切削过程的振动,提高刀具寿命,降低表面粗糙度,并且成本低、实验装置简单实用。提出了一种基于通电加热的新型高温硬度测量方法,用该方法分析淬火钢在高温下的硬度变化情况,发现常温57HRC的淬火T10A工具钢在300 ℃左右,硬度就急剧降低至30HRC,这也证明了加热切削的有效性。Abstract: A new electric hot milling method is proposed firstly, and then this paper has proposed the theory and the experimental device of the new method. It has been proved by experiment and analyzing the vibration signal processed by wavelet transform on the new method that it really can significantly reduce the vibration and increase the tool life in milling process. And it also can reduce the surface roughness of the material. Besides, the device is not only cheap but also simple and practical. A new high-temperature hardness measurement method based on electric hot technology is proposed. The change of hardness at high temperature of the hardened steel has been analyzed. The hardness of T10A carbon tool steel which has been hardened is nearly 57HRC in normal atmospheric temperature, but the hardness drastically reduce to hardness 30HRC when the material is heated to 300 ℃. So the efficiency of the new electric hot milling method has also been proved.
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Key words:
- carton steel /
- design of experiments /
- efficiency /
- electric hot milling
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[1] Krabacher E J, Merchant M E. Basic factors in hot-machining[J]. Trans. of the ASM E,1951,73 [2] Masood S H, Armitage K, Brandt M. An experimental study of laser-assisted machining of hard-to-wear white cast iron[J]. International Journal of Machine Tools & Manufacture,2011,(51):450-456 [3] Ding H T, Shin Y C. Laser-assisted machining of hardened steel parts with surface integrity analysis[J]. International Journal of Machine Tools & Manufacture,2010,(50):106-114 [4] Anderson M, Patwa R, Shin Y C. Laser-assisted machining of Inconel 718 with an economic analysis[J]. International Journal of Machine Tools & Manufacture,2006,(46):1879–1891 [5] 王扬,吴雪峰,张宏志.激光加热辅助切削技术[J].航空制造技术,2011,(8):42-45. Wang Y, Wu X F, Zhang H Z. Technology of laser assisted machining[J]. Aeronautical Manufacturing Technology,2011,(8): 42-45 (in Chinese) [6] 王慧艺,林建平,阮雪榆.加热辅助切削研究[J].机械设计与制造,2002,(1):75-77 Wang H Y, Lin J P, Ruan X Y. Researching on heating-assisted cutting[J]. Machinery Design & Manufacture,2002,(1):75-77 (in Chinese) [7] Leshock C E, Kim J N, Shin Y C. Plasma enhanced machining of Inconel 718: modeling of workpiece temperature with plasma heating and experimental results[J]. International Journal of Machine Tools & Manufacture,2001,(41):877-897 [8] Thomas A, Böhm G. Application of atmospheric plasma jet machining (PJM) for effective surface figuring of SiC[J]. Precision Engineering,2012,(36):546-553 [9] 陈文戈,叶邦彦.导电加热切削技术综述[J].电加工与模具,1999,(2):28-30 Chen W G, Ye B Y. Overview of electric hot machining technique[J]. Electro Machining & Mould,1999,(2):28-30 (in Chinese) [10] 赵学智,叶邦彦,陈统坚.导电加热切削切削区加热电阻模型及试验分析[J].机械工程学报,2009,45(1):115-123 Zhao X Z, Ye B Y, Chen T J. Model of heating resistance of shear zone in electric hot machining and its experiment analysis[J]. Chinese Journal of Mechanical Engineering,2009,45(1):115-123 (in Chinese) [11] 孙鹏.淬硬钢导电加热切削技术基础研究[D].大连:大连理工大学,2005 Sun P. Basie stuty on hardened steel using EHM[D]. Dalian:Dalian University of Technology,2005 (in Chinese) [12] 张崇才,贺毅.工程材料[M].成都:西南交通大学出版社,2012:159 Zhang C C, He Y. Engineering materials[M]. Chengdu:Southwest Jiaotong University Press,2012:159 (in Chinese) [13] 游学见.金属高温硬度测量装置[J].试验机与材料试验,1986,(6):39-40 You X J. Measuring device of metal high temperature hardness [J]. Testing Machine & Material Testing,1986(6):39-40 (in Chinese)
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