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Optimization of microtextured tools parameters in thread turning process of aluminum 7075 aerospace alloy
Materials and Manufacturing Processes ( IF 4.8 ) Pub Date : 2020-07-27 , DOI: 10.1080/10426914.2020.1772485
Salman Khani 1 , Mohammad Reza Razfar 1 , Seyedhamidreza Shahabi Haghighi 2 , Masoud Farahnakian 3
Affiliation  

ABSTRACT In this paper, the thread turning of aluminum 7075 aerospace alloy is studied using microtextured carbide cutting inserts. The main target of this research work is to optimize the parameters of microtextured tools using response surface methodology (RSM) in the thread turning process. To achieve this, microtextures were fabricated by laser micromachining on the rake surface of tools. The factors studied are width or diameter (w), depth (d), distance (p), and shape (T) of microtextures. In this study, cutting force (F) was considered as the output response of the design of experiment (DOE). Depths of cut for different threading passes are selected according to Sandvik thread machining recommendations. Also, cutting speed was considered constant and equal to 52 m/min. Experimental results were analyzed by analysis of variance (ANOVA), and significant factors were identified. Based on ANOVA results, quadratic models were developed using the Box-Behnken design tool, and optimal microtexture factors were obtained. According to our findings, the optimal level of width, depth, and distance of microtextures are 93.4 µm, 15 µm, and 50 µm, respectively, and the microhole textured tool is more efficient than microgrooved and traditional tools in the thread turning process.

中文翻译:

7075航空合金铝螺纹车削加工微织构刀具参数优化

摘要 在本文中,使用显微结构硬质合金切削刀片研究了 7075 航空航天合金铝的螺纹车削。本研究工作的主要目标是在螺纹车削过程中使用响应面方法 (RSM) 优化微纹理刀具的参数。为了实现这一点,通过激光微加工在工具的前刀面上制造了微纹理。研究的因素是微纹理的宽度或直径 (w)、深度 (d)、距离 (p) 和形状 (T)。在本研究中,切削力 (F) 被视为实验设计 (DOE) 的输出响应。根据山特维克螺纹加工建议选择不同螺纹加工的切削深度。此外,切割速度被认为是恒定的,等于 52 m/min。实验结果通过方差分析(ANOVA)进行分析,并确定了重要因素。基于方差分析结果,使用 Box-Behnken 设计工具开发二次模型,并获得最佳微观纹理因子。根据我们的研究结果,微纹理的最佳宽度、深度和距离分别为 93.4 µm、15 µm 和 50 µm,并且在螺纹车削过程中,微孔纹理刀具比微槽刀具和传统刀具更有效。
更新日期:2020-07-27
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