类球体微粒刀水致旋转驱动机理及其微纳铣削

项目名称： 类球体微粒刀水致旋转驱动机理及其微纳铣削

项目编号： No.51275251

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 机械、仪表工业

项目作者： 程晓民

作者单位： 宁波工程学院

项目金额： 90万元

中文摘要： 降低刀具尺寸和寻找新的微细切削方法对微型零件的制造有积极意义。我们前期研究发现：水射流在满足一定条件时能够形成"水镊"，"水镊"可以捕获和操控微粒，"水镊"中的微粒存在着旋转现象。据此提出将微粒作为切削刀具，利用水势阱捕获和操控微粒刀，使其旋转和移动，从而实现微纳铣削的理念。研究拟采用分形理论、多尺度模型、模拟仿真、视觉监控、搭建实验平台等方法和手段，进行水势阱的形成与特性、微粒刀的力学行为、水致旋转驱动和微粒刀的微纳铣削机理等方面的研究，并进行微纳铣削实验，探索水势阱对微粒刀的捕获和操控理论，阐明水势阱与微粒刀的耦合作用机制，解释水势阱对微粒刀的水致旋转驱动机理，建立微纳铣削应变梯度理论模型，揭示最小铣削极限变化规律。项目提出了一种全新的"微粒刀"微纳铣削理念，为微制造提供一种新的微粒操控方法和微纳铣削方法，为进一步开发水驱动的微机械装置打下基础。

中文关键词： 微粒刀；微细加工；微纳铣削；水致旋转；驱动机理

英文摘要： Minimizing the size of cutter and looking for new micro cutting way are playing positive roles in producing mini-parts.During the initial research period, we found that water jet can form water tweezers under certain conditions. Since water tweezers can capture and manipulate particles, and there are eddies in the particulates, we come up with an idea to put the theory of micro milling into practice: use particles as a cutting tool, and watery potential well to capture and manipulate particle cutter, so that these particulates can eddy and move. We plan to adopt fractal theory, multi-scale model, simulation, vision control, set up an experiment platform, and other ways to implement this theory. We conduct a study to investigate the formation and the characteristic of watery potential well, the dynamic behavior of particle cutter, water-induced rotation of particles in water gagging, and micro milling mechanism of particle cutter. Then we test micro milling, explore the theory of how watery potential well can capture and manipulate particle cutter, clarify coupling effect mechanism of watery potential well and particle cutter, explain water-induced rotation mechanism of watery potential well and particle cutter, construct a model of deformational grads theory, and finally reveal the change regularity of milling l

英文关键词： particulate cutter；micro machining；micro milling；water-induced rotation；driving mechanism