摘要
在相同刃口参数和切削参数条件下,采用整体硬质合金螺旋立铣刀进行7050铝合金薄壁筋高速铣削试验,并通过X射线衍射法测量在不同刀具齿数和刃口跳动下的表面残余应力。结果表明:两齿刀具切削产生拉应力,三齿刀具切削产生压应力;刃口跳动量小的刀具所产生切削残余应力值波动小;提高切削线速度将增大应力值并使其向拉应力方向偏移。
Through employing the same edge parameter and cutting condition,the experiments on the high-speed milling of thin-ribbed 7050 aluminum alloy parts with different end mill diameters and tooth numbers are carried out. The surface residual stress is measured by X-ray diffraction method. The results show that tensile residual stress is produced with a two-tooth tool while the compressive stress is produced with a three-tooth tool. The stress fluctuation is smaller with a smaller tool edge run out. With the increase of the cutting speed,the residual stress will be increased and the residual stress tends to shift toward the tensile stress.
出处
《工具技术》
2018年第2期30-32,共3页
Tool Engineering
基金
国家自然科学基金(51405226)
江苏省自然基金青年科学基金(SBK2014043631)
关键词
薄壁筋
表面残余应力
高速铣削
刀具齿数
thin-ribbed part
surface residual stress
high-speed milling
tooth number