摘要
为探究金属切削速度对切削变形的影响,优化切削参数,提高加工质量,使用WC类硬质合金刀具在车床上对45号钢进行单因素切削实验。此过程仅调整切削速度,保持其他参数恒定,观察切屑自由表面形态、切削温度和平均切削力的变化。结果表明,随着切削速度增加,切屑表面从无规则褶皱变为规律性褶皱,临界速度约为300 m·min-1。低速切削时,随着速度提高,金属表面氧化加剧导致色泽加深,同时切削力增大,表明材料塑性变形抗力增强,揭示了切削过程中的热-力耦合效应。最终得出,切削速度会显著影响切削变形,应合理控制,以确保高效、高质量加工。
In order to explore the influence of metal cutting speed on cutting deformation,optimize the cutting parameters and improve the processing quality,the single factor cutting experiment of 45 steel was carried out on a lathe with WC Cemented Carbide tools.This process only adjusts the cutting speed and keeps other parameters constant.The changes of chip free surface morphology,cutting temperature and average cutting force were observed.The results show that with the increase of cutting speed,the chip surface changes from irregular folds to regular folds,and the critical speed is about 300 m·min-1.When cutting at low speed,with the increase of speed,the oxidation of metal surface intensifies,resulting in the deepening of color,and the cutting force increases,indicating that the plastic deformation resistance of the material increases,revealing the thermal mechanical coupling effect in the cutting process.Finally,it is concluded that the cutting speed will significantly affect the cutting deformation,which should be reasonably controlled to ensure efficient and high-quality processing.
作者
梁超
LIANG Chao(Wuhan Second Light Industry School,Wuhan 430080)
出处
《现代制造技术与装备》
2025年第9期11-13,23,共4页
Modern Manufacturing Technology and Equipment
关键词
金属切削速
切削速度
切削变形
工件材料
metal cutting speed
cutting speed
cutting deformation
workpiece material
