Experimental investigation on the performance of helical milling for hole processing in AZ31 magnesium alloy

被引：10
作者：
Gonsalves J.A. [1 ]
Nayak S.N. [1 ]
Bolar G. [1 ]
机构：
[1] Department of Mechanical & Manufacturing Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, 576 104 Karnataka, Manipal
来源：
Journal of King Saud University - Engineering Sciences | 2022年 / 34卷 / 05期
关键词：
Chip morphology; Drilling; Helical milling; Machining force; Surface roughness; Temperature;
D O I：
10.1016/j.jksues.2020.10.004
中图分类号：
学科分类号：
摘要：
A comparative evaluation of conventional drilling and helical milling to process holes in AZ31 Magnesium alloy is reported. The results highlight the advantages of helical hole milling over the mechanical drilling process in terms of lower machining forces. Besides, the process is successful in reducing the machining temperature and size of the burrs formed, in addition to improved surface finish. Further, analysis of the helical hole milling process demonstrated that the axial pitch has a dominating influence on the thrust force, whereas the feed value greatly influences the radial force. The spindle speed is found to influence the machining temperature significantly. The chip morphology is found to be dependent on feed and axial pitch, with the feed value influencing the chip segmentation and breakability. The absence of burn marks on the chip surface indicates a lower risk of fire hazard. © 2020 The Authors
引用
收藏
页码：366 / 374
页数：8
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