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首页> 美国卫生研究院文献>Materials >Study of Drilling Process by Cooling Compressed Air in Reinforced Polyether-Ether-Ketone
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Study of Drilling Process by Cooling Compressed Air in Reinforced Polyether-Ether-Ketone

机译：增强聚醚醚酮中压缩空气冷却的钻井工艺研究

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This study is focused on the application of a cooling compressed air system in drilling processes; this environmentally friendly technique allows removing material at very low temperatures, approximately up to −22 °C in the cutting area. The main goals are to find the most improve cutting conditions with less energy consumption, for the drilling of reinforced polyether-ether-ketone with glass fiber at 30% (PEEK-GF30) with cooling compressed air by a Ranque-Hilsch vortex tube, and to find a balance between environmental conditions and adequate process performance. Drilling tests were carried out on plates of PEEK-GF30 to analyze the influence of cutting parameters and environmental temperature (–22, 0 and 22 °C) on variables such as thrust forces, energy and material removed rate by the use of statistical methods; analysis of variance, analysis of means, response surface, and desirability function were employed to identify the optimum region that provides the most improved values of the aforementioned variables. Drill bit diameter was also analyzed to determine the quality of drilled holes. During the drilling processes, force signals were detected by a piezoelectric dynamometer connected to multichannel amplifier and a pyrometer was used to control the temperature. The diameters of the drilled holes were measured by a coordinate measuring machine. Cooling compressed air can be considered an adequate technique to improve the results from an environmental and efficient perspective; in particular, the maximum desirability function was found at a spindle speed of 7000 rpm, a feedrate of 1 mm/rev and a temperature close to −22 °C.
机译：这项研究的重点是冷却压缩空气系统在钻井过程中的应用。这项环保技术可在非常低的温度下去除材料，该温度在切割区域大约为-22°C。主要目标是找到最优化的切削条件，并降低能耗，以便通过Ranque-Hilsch涡流管用压缩空气冷却，以30％的玻璃纤维（PEEK-GF30）增强聚醚醚酮的钻孔，以及在环境条件和适当的过程性能之间找到平衡。在PEEK-GF30板上进行了钻孔测试，以使用统计方法分析切削参数和环境温度（–22、0和22°C）对诸如推力，能量和材料去除率等变量的影响；方差分析，均值分析，响应面分析和合意性函数用于确定提供上述变量的最大改进值的最佳区域。还分析了钻头直径，以确定钻孔的质量。在钻孔过程中，通过连接到多通道放大器的压电测功机检测力信号，并使用高温计控制温度。用坐标测量机测量钻孔的直径。从环境和有效的角度看，压缩空气的冷却可以被认为是改善结果的适当技术。特别是，在7000 rpm的主轴转速，1 mm / rev的进给速度和接近-22°C的温度下发现了最大期望功能。

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