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半固着磨粒加工工艺参数对“陷阱”效应影响的离散元模拟
  • 期刊名称：现代制造工程，2009年第1期：1-5
  • 时间：0
  • 分类：TG74[金属学及工艺—刀具与模具]
  • 作者机构：[1]浙江工业大学机械制造与自动化教育部重点实验室超精密加工研究中心,杭州310014, [2]湖南大学国家高效磨削工程技术研究中心,长沙410082
  • 相关基金：国家自然科学基金重点资助项目（50535040）
  • 相关项目：先进陶瓷精密高效加工技术基础研究
关键词： 半固着磨具, “陷阱”效应, 离散单元法, semifixed abrasive grinding plate , ＇ trap ＇ effect, discrete element method
中文摘要：

半固着磨粒加工以“陷阱”效应来降低加工质量和效率对磨粒尺寸分布均匀程度的敏感性，可提高精密、超精密加工的生产效率。对半固着磨具的“陷阱”效应进行离散元模拟，选取多种不同粒径大颗粒，分析加工载荷、工件与磨具的相对速度，以及工件摩擦因数三个加工工艺参数对“陷阱”效应的影响。仿真结果表明：加工载荷越大，半固着磨具“陷阱”效应发挥越好；而工件与磨具的相对速度和工件摩擦因数对半固着磨具“陷阱”效应影响不大；大颗粒尺寸越接近磨具中磨粒的尺寸，半固着磨具的“陷阱”效应发挥越好。

英文摘要：

The sensitivity of machining accuracy and efficiency to abrasive size distribution uniformity is decreased by the ＇ trap＇ effect of semi-fixed abrasive machining. The productivity of the precision and ultra-precision processing is improved by the ＇ trap＇ effect. ＇ Trap＇ effect of semi-fixed abrasive grinding plate is simulated by discrete element method. The different dimension lager particles are selected to analyze the impacts of the three processing parameters （processing load, the relative velocity between the workpieces and the plate,the friction coefficient of the workpieces） on the ＇trap＇ effect. The simulation results show as follow： with the increase of processing load, the ＇ trap＇ effect of semi-fixed abrasive grinding plate will performs better. The friction coefficients of the workpieces and the relative velocity between the workpieces and the plate have no impact on the ＇ trap＇ effect. When the large particles size is much closer to the abrasive size, the ＇ trap＇ effect performs better.

同期刊论文项目
先进陶瓷精密高效加工技术基础研究
期刊论文 60 会议论文 7 获奖 4 著作 2
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