Evaluation of Machinability Indicators in Milling of Thin-Walled Composite Structures

K. Ciecieląg
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Abstract

Composite materials are alternative materials to aluminum and titanium alloys. The wide-spread use of this materials makes it necessary to gain insight into the phenomena occurring in machining processes for thin-walled structures. This paper shows the investigation of the machinability of thin-walled composite materials. The study involved milling glass and carbon reinforced plastics using tools dedicated to the processing of this type of material. Their machinability was determined based on the measured feed force, deformation and surface roughness. In addition, surface analysis was performed by SEM. The results showed that the feed had the greatest impact on the feed force, deformation and surface roughness, followed by cutting speed. Lower values of the measured machinability indicators such as the maximum feed force and roughness were obtained for composites with glass fibers. Lower deformations were induced in the machining of composites with carbon fibers. The study also in - volved conducting a recurrence analysis in order to select the most appropriate quantifications depending on the technological parameters of milling. It was found that the most appropriate indicators related with the technological parameters for both materials were laminarity and averaged diagonal length.
评估薄壁复合材料结构铣削加工中的可加工性指标
复合材料是铝合金和钛合金的替代材料。随着这种材料的广泛使用,有必要深入了解薄壁结构加工过程中出现的现象。本文介绍了对薄壁复合材料可加工性的研究。研究涉及使用加工此类材料的专用工具铣削玻璃和碳增强塑料。根据测量到的进给力、变形和表面粗糙度确定了它们的可加工性。此外,还通过扫描电镜进行了表面分析。结果表明,进给量对进给力、变形和表面粗糙度的影响最大,其次是切削速度。玻璃纤维复合材料的最大进给力和粗糙度等加工性能指标的测量值较低。碳纤维复合材料的加工变形较小。研究还包括进行复现分析,以便根据铣削技术参数选择最合适的量化指标。结果发现,与两种材料的技术参数相关的最合适指标是层状度和平均对角线长度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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