Al6061铝合金微细铣削微毛刺的产生与信号特征相关性研究

Research on Correlation between Generation of Micro-milling Burrs and Signal Characteristics of Al6061 Aluminum Alloy

微毛刺是机械加工中衡量零件表面质量的重要因素,在微细铣削工艺中形成的微毛刺会降低零件表面质量,增加生产成本。通过控制主轴转速、切削深度以及进给量可以抑制微毛刺的产生,进而提高零件表面质量,降低生产成本。采用声发射信号和切削力信号对Al6061铝合金进行微细铣削加工实验,通过分析不同切削条件下对应的声发射信号的特征参数及切削力的变化情况,综合判断微毛刺的大小与切削用量之间的关系。结果表明:声发射信号的特征参数、切削用量的选择与微毛刺的产生有一定的相关性,证明了声发射监测技术在提高零件表面质量上的有效性,为实际生产加工中切削用量的选择提供了参考依据。

Microburr is an important factor to effect the measure of the surface quality of parts in machining.The microburr formed in the micro-milling process reduces the surface quality of parts and increases the production cost.By controlling the spindle speed,cutting depth and feed amount,the production of microburr can be inhibited,and the surface quality of the parts can be improved and the production cost is reduced.The acoustic emission signal and cutting force signal are used to analyse the characteristic parameters and cutting force changes under different cutting conditions of Al6061 aluminum alloy.The results show that the selection of characteristic parameters,the cutting amount and the generation of microburr,which proves the effectiveness of acoustic emission monitoring technology in improving the surface quality of parts,and a reference for the selection of cutting amount in actual production and processing is provided.