Effect of cryogenic conditions on the milling performance of aramid fiber
Effect of cryogenic conditions on the milling performance of aramid fiber
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DOI：
10.1007/s00170-015-7574-4
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发表时间：
2016-03
期刊：
影响因子：
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通讯作者：
Fengbiao Wang;Yongqing Wang;B. Hou;Jinbao Zhang;Yapeng Li
中科院分区：
文献类型：
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作者：
Fengbiao Wang;Yongqing Wang;B. Hou;Jinbao Zhang;Yapeng Li
在数控铣床上对芳纶纤维复合材料进行了染色切割和液氮深冷加工。分析了铣削质量和铣削力，探讨了切削机理。结果表明，随着主轴转速的提高，对于染料切割，只有在5000 r/min的转速下才能获得较好的表面质量，而在低温条件下，主轴转速可能更高。在同样的速度下，低温的都比染料的好。在相同的速度下，低温切削的切削力通常低于干式切削。测量仪器和材料性能参数的参考误差是模型预测与实验测量误差的主要原因。而且，随着温度的降低，切屑断裂方式由拉伸断裂向剪切断裂转变，提高了铣削质量。在低温条件下，切削力的降低和切削温度的降低对材料切削缺陷的改善起到了积极的作用。
The aramid fiber composite materials were processed by CNC milling machine in dye cutting and liquid nitrogen cryogenic conditions. The milling qualities and forces were analyzed, and cutting mechanism was discussed. The results show that with the increase of spindle speed, the better surface quality is only obtained in restrained 5000 r/min for the dye cutting, but in cryogenic conditions, the speed may be bigger. And at the same speed, the cryogenic ones are all more excellent than the dye ones. The cutting forces are generally lower for cryogenic than the dry ones at the same speed. The measuring instrument and material performance parameters from reference errors are the main error reason between model prediction and experimental measurements. Moreover, with the decrease of temperature, from tensile to shear fracture, the change of chip breaking improves the milling quality. In cryogenic condition, cutting force decrease and temperature drop have played a positive role for the improvement of the material cutting defects.