【作者】 徐立芳；

【导师】 马文琦；

【作者基本信息】 大连海事大学 ， 机械电子工程， 2010， 硕士

【摘要】 在工业制造过程中,非接触搬运技术由于其无接触、无表面擦伤、无静电等优点具有广泛的应用前景和重要的研究意义。目前非接触搬运技术主要有电磁式、超声波式和空气悬浮式等几种方式。其中,空气悬浮技术又分为空气吹浮式和负压吸附式,本文针对非接触涡流负压搬运器的流场特性进行了如下工作：首先,阐述了非接触涡流负压搬运器的工作原理,并推导出流场内径向压力分布公式。将其结果与仿真结果、实验结果进行了对比,三者的吻合性较好,验证了所推导压力公式的正确性。其次,采用gambit建立不同结构搬运器三维流场仿真模型,采用非结构化网格划分方法；在FLUENT软件中采用RNG k-ε湍流模型进行流场计算；对不同工况条件下的压力场,速度场、提升力等特性进行了分析,获得了涡流吸附负压效应影响因素和变化规律。此外,为验证理论数值仿真的正确性,设计并搭建了压力、提升力测试实验台,分别对不同结构搬运器及不同工况下搬运器的压力分布、提升力等特性进行了实验测试,并将实验结果与理论计算、仿真结果进行对比。最后,设计并制作了由多个相同结构搬运器组成的搬运盘,并搭建了搬运实验台,进行了搬运效果的测试,实验验证了非接触负压搬运的可行性。更多还原

【Abstract】 In the industrial manufacturing process, the non-contact handling technology has wide application prospects and important insignificance of research because of its advantages such as non-contact, no surface scratching and no static electricity. Now the non-contact handing technologies having been adopted are mainly electromagnetic, ultrasonic, air suspension, etc. The air suspension technology is divided into two types: blowing and negative pressure adsorption. In this paper, the following works were conducted about the flow characteristics of non-contact vortex negative pressure carrier:First, the working principle of non-contact vortex negative pressure carrier was stated and the radial pressure distribution formula of flow field was derived. The results were compared with simulation and experiment results, it is noted that the curves anastomose preferably well with each other. And the comparison verified the accuracy of the deduced pressure distribution formula.Second, the three-dimensional flow field simulation models based on the different structural carriers were built with the Gambit software, and unstructured grids were used; the RNGκ-εturbulent model provided by the FLUENT software was chose for calculation. Based on the calculation results, the analysis on the pressure field, velocity field and absorbability was conducted in different working conditions. At last, the influence factors and variation rules of vortex adsorption negative pressure effect were obtained.In addition, in order to verify the accuracy of the theoretical simulations, the pressure and the lifting force experiment rigs were designed and built. The experiment on the pressure field and the lifting force of different structural carrier was conducted in different working conditions, and the experiment results were compared with the theoretical calculation and simulation results.At last, the handling plate composed by a number of the same structure carrier was designed and made, the handling experiment was built for the test of the handling effect. The experiment verified the feasibility of non-contact negative pressure handling.更多还原