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Evaluation of Parameters Affecting Magnetic Abrasive Finishing on Concave Freeform Surface of Al Alloy via RSM Method

机译：通过RSM方法对影响Al合金凹入的磁磨料精加工参数的参数评价

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摘要

The attempts of researchers in industries to obtain accurate and high quality surfaces led to the invention of new methods of finishing. Magnetic abrasive finishing (MAF) is a relatively new type of finishing in which the magnetic field is used to control the abrasive tools. Applications such as the surface of molds are ones of the parts which require very high surface smoothness. Usually this type of parts has freeform surface. In this study, the effect of magnetic abrasive process parameters on freeform surfaces of parts made of aluminum is examined. This method is obtained through combination of magnetic abrasive process and Control Numerical Computer (CNC). The use of simple hemisphere for installation on the flat area of the magnets as well as magnets’ spark in curve form is a measure done during testing the experiments. The design of experiments is based on response surface methodology. The gap, the rotational speed of the spindle, and the feed rate are found influential and regression equations governing the process are also determined. The impact of intensity of the magnetic field is obtained using the finite element software of Maxwell. Results show that in concave areas of the surface, generally speaking, the surface roughness decreases to 0.2 μm from its initial 1.3 μm roughness. However, in some points the lowest surface roughness of 0.08 μm was measured.
机译：工业研究人员的尝试获得准确和高质量的表面导致了新的精加工方法。磁磨料精加工（MAF）是一种相对较新的精加工，其中磁场用于控制研磨工具。诸如模具表面的应用是需要非常高表面平滑度的部分。通常这种类型的部件具有自由形式表面。在该研究中，检查了磁磨削工艺参数对由铝制成件的自由形状表面的影响。该方法是通过磁磨削过程和控制数学计算机（CNC）的组合获得的。使用简单的半球用于在磁铁的平坦区域和曲线形式的磁铁中的火花是在测试实验期间完成的措施。实验的设计基于响应面方法。发现轴的间隙，主轴的旋转速度和进给速率的影响也确定了处理过程的有影响力和回归方程。使用MaxWell的有限元软件获得磁场强度的影响。结果表明，在表面的凹形区域，一般而言，表面粗糙度从其初始1.3μm粗糙度降至0.2μm。但是，在某些点中，测量了0.08μm的最低表面粗糙度。

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