Improved predictions of the stability lobes for milling cutting operations of thin-wall components by considering ultra-miniature accelerometer mass effects

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• 作者：D. Olvera ; A. Elías-Zúñiga…
• 关键词：Thin ; walled structures ; Stability lobes ; Accelerometer mass effect ; Laser Doppler vibrometer ; Homotopy perturbation method
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：86
• 期：5-8
• 页码：2139-2146
• 全文大小：1,282 KB
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering
  Production and Logistics
  Mechanical Engineering
  Computer-Aided Engineering and Design
  
• 出版者：Springer London
• ISSN：1433-3015
• 卷排序：86

文摘

In this work, we study how the mass and the lightweight connecting cable of an ultra-miniature accelerometer sensor (ACC) influence the frequency response function (FRF) of thin-wall aluminum workpieces, and its influence over the stability analysis of the milling process. To address these effects, experimental FRF measurements were performed by using a noncontact laser Doppler vibrometer (LDV) system to compare its collected data with those obtained by using the ACC. To correlate the discrepancies observed between measurements, we have used the structural modification method and finite element simulations to quantify the accelerometer mass and its connecting cable effects. Then, we computed the stability lobes diagram by using the enhanced, multistage homotopy perturbation method (EMHPM) to determine stable cutting parameters. It was found that the predicted stability lobes agree well with experimental data if the structural modification method is used to compensate the accelerometer measurements. This methodology could help researches and machinist with limited access to LDV equipment to perform reliable experimental dynamic measurements in cases where the cable and accelerometer mass could affect data accuracy.