The 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−1 or higher than 1800 m·min−1. This study provides a reference for reducing cutting temperature, controlling chip morphology and improving cutting tool life.

中文翻译：

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ADC12铝合金高速铣削切屑形态及切削温度

ADC12铝合金由于其硬度高，在高速铣削过程中容易出现严重的刀具磨损和高切削热。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ADC12铝合金高速铣削有限元分析(FEA)二维正交切削模型。基于金属切削理论，提出了切削力和切削温度的理论分析模型。通过有限元分析法分析切屑形状、切削力和切削温度随切削速度增加的变化。结果表明，随着切削速度的增加，切屑形态由连续变为锯齿状，然后又变回连续。当速度低于600 m·min-1或高于1800 m·min-1时，锯齿状切屑减弱，切削温度降低。该研究为降低切削温度、控制切屑形态和提高刀具寿命提供参考。