Chip morphology and cutting temperature of ADC12 aluminum alloy during high-speed milling
Chip morphology and cutting temperature of ADC12 aluminum alloy during high-speed milling
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DOI：
10.1007/s12598-020-01486-2
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发表时间：
2020-07
期刊：
影响因子：
8.8
通讯作者：
Xinxin Meng;You-Xi Lin
中科院分区：
文献类型：
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作者：
Xinxin Meng;You-Xi Lin
摘要ADC 12铝合金硬度高，在高速铣削时刀具磨损严重，切削热高。本研究从不同切屑形态的角度分析高速铣削过程。阐述了切削温度对切屑形貌的影响。建立了高速铣削ADC 12铝合金的二维正交切削有限元分析模型。根据金属切削理论，建立了切削力和切削温度的理论分析模型。通过有限元分析，分析了切屑形状、切削力和切削温度随切削速度的变化。结果表明，随着切削速度的增加，切屑形貌由连续到锯齿状，再回到连续。当速度低于600 m·min-1或高于1800 m·min-1时，锯齿形切屑被削弱并且切削温度降低。该研究为降低切削温度、控制切屑形态、提高刀具寿命提供了参考。
AbstractThe ADC12 aluminum alloy is prone to severe tool wear and high cutting heat during high-speed milling because of its high hardness. This study analyzes the high-speed milling process from the perspective of different chip morphologies. The influence of cutting temperature on chip morphology was expounded. A two-dimensional orthogonal cutting model was established for finite element analysis (FEA) of high-speed milling of ADC12 aluminum alloy. A theoretical analysis model of cutting force and cutting temperature was proposed based on metal cutting theory. The variations in chip shape, cutting force, and cutting temperature with cutting speed increasing were analyzed via FEA. The results show that, with the increase in cutting speed, the chip morphology changes from continuous to serrated, and then back to continuous. The serrated chip is weakened and the cutting temperature is lowered when the speed is lower than 600 m·min−1or higher than 1800 m·min−1. This study provides a reference for reducing cutting temperature, controlling chip morphology and improving cutting tool life.Graphic abstract