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摘要：
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本文针对冷滚打花键和铣削花键加工工艺特点,从微观组织分析角度,对两种加工方法得到工件金相组织和硬度分布进行分析比较。试验表明:铣削加工过程中,金属表面组织被切断,内部组织没有发生变化,对力学性能也没有影响;而冷滚打加工后的花键金属组织未被切断,晶粒破碎和细化,位错密度增加,最终被拉成条形纤维组织。相对于铣削,冷滚打加工改善了加工表面金属组织,硬度和强度有较大提高。从而为冷滚打花键成形技术的进一步研究奠定了基础。
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On the basis of different technical features of processing spline by cold rolling method and milling method,the microstructure and rigidity distribution of different samples,which were gained from these two processing methods,were performed and a comparison analysis from the perspective of microstructure was made.The results show that,in milling method,the surface metal microstructure is cut off. In addition,the mechanical property and internal metal microstructure are not transformed.By contrast,in cold rolling method,the metal microstructure is not cut off,grains are broken and refined,and dislocation density is also increased.Compared with milling method,cold rolling method distinctly increases not only the surface quality,but the hardness and the strength of the metal.The research also lays foundation to the further study of the forming technique of spline.
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基金项目：
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河南省自然科学基金资助项目(994041800);;
河南省教育科技攻关项目(200610464002)
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作者简介：
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参考文献：
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[1]崔凤奎.渐开线花键加工方法进展[J].矿山机械,2007,35(2):116-119.
[2]杨建玺.冷滚轧滚轮的设计理论及实验修正[J].中国机械工程,2004,15(24):2168-2171.
[3]方泉水,辛选荣,刘汀,等.6061铝合金花键壳体冷挤压工艺研究[J].锻压技术,2007,32(1):24-27.
[4]崔克天.花键冷滚轧有限元分析及弹塑性修正研究[D].洛阳:河南科技大学,2006.
[5]崔凤奎,李言,周彦伟,等.渐开线花键滚轧轮CAD及磨削仿真[J].机械工程学报,2005,41(12):210-215.
[6]苏志鹏.花键轴冷滚轧运动的数学模型研究与应用[J].矿山机械,2006,34(01):99-100.
[7]刘全坤.材料成形基本原理[M].北京:机械工业出版社,2005.
[8]张光辉.冷打制齿工艺及质量问题的探讨[J].锻压工艺,1981,(2):23-32.
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