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Forces acting between polishing tool and workpiece surface in magnetorheological finishing

机译:磁流变精加工中抛光工具与工件表面之间的作用力

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Magnetorheological finishing is a computer-controlled polishing technique that is used mainly in the field of high-quality optical lens production. The process is based on the use of a magnetorheological polishing fluid that is able, in a reversible manner, to change its viscosity from a liquid state to a solid state under the control of a magnetic field. This outstanding characteristic facilitates rapid control (in milliseconds) of the yield stress, and thus the pressure applied to the workpiece surface to be polished. A three-axis dynamometer was used to measure the forces acting between the magnetorheological fluid and the workpiece surface during determination of the material removal characteristic of the polishing tool (influence function). The results of a testing series using a QED Q22-X MRF polishing machine with a 50 mm wheel assembly show that the normal forces range from about 2 to 20 N. Knowledge of the forces is essential, especially when thin workpieces are to be polished and distortion becomes significant. This paper discusses, and gives examples of, the variation in the parameters experienced during a programme of experiments, and provides examples of the value of this work.
机译:磁流变抛光是一种计算机控制的抛光技术,主要用于高质量光学镜片的生产领域。该方法基于磁流变抛光液的使用,该磁流变抛光液能够在磁场的控制下以可逆的方式将其粘度从液态改变为固态。这种出色的特性有助于快速控制屈服应力(以毫秒为单位),从而有利于控制要抛光的工件表面的压力。在确定抛光工具的材料去除特性(影响函数)期间,使用三轴测功机测量作用在磁流变流体和工件表面之间的力。使用带有50 mm车轮组件的QED Q22-X MRF抛光机进行的一系列测试结果表明,法向力范围约为2到20N。了解力是必不可少的,尤其是当薄工件要抛光和失真变得明显。本文讨论并给出了实验程序中遇到的参数变化的示例,并提供了这项工作的价值的示例。

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