| 摘 要: 为了探究沟槽工件在超声振动辅助磁性复合流体(Ultrasonic Vibration-assisted Magnetic Compound Fluid, UVMCF)抛光过程中流体性能对抛光加工的影响，对沟槽的超声振动辅助磁性复合流体抛光进行仿真分析并通过工艺实验进行验证。首先利用COMSOL Multiphysics有限元分析软件建立UVMCF抛光过程中抛光液流动的数学模型，进而分析超声振动下抛光液的流动特性；再以316L型不锈钢沟槽作为加工对象，进行UVMCF抛光工艺实验并获得最佳工艺参数。研究结果表明：磁性复合流体(Magnetic Compound Fluid, MCF)抛光液在沟槽中流动的过程中，对沟槽表面压力呈现周期性变化，在1/4周期处取得最大值；当抛光时间为5 min、抛光轮转速为500 rpm、振幅为5 μm时抛光效果最佳，沟槽顶部表面粗糙度Ra达到0.217 μm；槽底表面粗糙度Ra达到0.403 μm，去除率为4.74 mg/min。 |
| 关键词: 超声振动；磁性复合流体；COMSOL；仿真分析；沟槽 |
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中图分类号: TP391.9
文献标识码: A
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| Simulation Analysis of Ultrasonic Vibration-assisted Magnetic Compound Fluid Polishing of Grooves |
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WEI Jiuxiang
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(School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China )
wei_jiuxiang@126.com
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| Abstract: In order to explore the influence of fluid properties on the polishing process of grooved workpiece in ultrasonic vibration-assisted magnetic compound fluid (UVMCF) polishing, this paper proposes to simulate and analyze the ultrasonic vibration-assisted magnetic compound fluid polishing, and it is verified by a process test. Firstly, finite element analysis software of COMSOL multiphysics is used to establish the mathematical model of polishing fluid flow in UVMCF polishing process, and then the flow characteristics of polishing fluid under ultrasonic vibration are analyzed. Taking 316L stainless steel groove as the machining object, the UVMCF polishing process test is carried out and the best process parameters are obtained. Research results show that during the flow of MCF polishing fluid in the groove, the pressure of the polishing fluid on the groove surface changes periodically, and the maximum value is obtained at 1/4 cycle. When the polishing time is 5 minutes, the speed of the polishing wheel is 500 rpm, and the amplitude is 5 μm, the polishing effect is the best: the surface roughness Ra of the groove top reaches 0.217 μm, the surface roughness Ra of the groove bottom reaches 0.403 μm, and the removal rate is 4.74 mg/min. |
| Keywords: ultrasonic vibration; magnetic compound fluid; COMSOL; simulation analysis; groove |
