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Machining Stresses and Initial Geometry on Bulk Residual Stresses Characterization by On-Machine Layer Removal

机译:通过在机层去除去除残余残余应力的加工应力和初始几何形状

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摘要

Prediction and control of machining distortion is a primary concern when manufacturing monolithic components due to the high scrap and rework costs involved. Bulk residual stresses, which vary from blank to blank, are a major factor of machining distortion. Thus, a bulk stress characterization is essential to reduce manufacturing costs linked to machining distortion. This paper proposes a method for bulk stress characterization on aluminium machining blanks, suitable for industrial application given its low requirements on equipment, labour expertise, and computation time. The method couples the effects of bulk residual stresses, machining stresses resulting from cutting loads on the surface and raw geometry of the blanks, and presents no size limitations. Experimental results confirm the capability of the proposed method to measure bulk residual stresses effectively and its practicality for industrial implementation.
机译:由于涉及高昂的报废和返工成本,因此在制造整体式零件时,对加工变形的预测和控制是首要考虑的问题。从坯料到坯料变化的大量残余应力是加工变形的主要因素。因此,体应力表征对于降低与机加工变形有关的制造成本至关重要。本文提出了一种在铝加工毛坯上进行整体应力表征的方法,由于其对设备,劳动力专业知识和计算时间的要求较低,因此适合工业应用。该方法将整体残余应力,由切削载荷在表面上产生的加工应力和毛坯的原始几何形状的影响耦合在一起,并且没有尺寸限制。实验结果证实了该方法有效测量整体残余应力的能力及其在工业上的实用性。

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