基于正交试验的铝合金行切加工表面粗糙度研究

Roughness Analysis of Aluminum Alloys Machining Based on Orthogonal Experiment

行切是航空结构件数控加工中的常用工艺方法,本文对铝合金航空结构件数控铣削过程中应用牛鼻铣刀行切加工零件表面特征的现象展开试验。针对不同切削线速度及每齿进给量对表面粗糙度的影响进行对比分析,试验结果显示,表面粗糙度不随理论残留高度的增加而增加,而是维持在一定范围;行距的增加并不会明显降低表面粗糙度;在该试验条件下优先选择较高的切削线速度及较低的每齿进给量能保证较好的表面粗糙度。

Direction-paralleled machining is one of the common processes in NC machining. The paper focuses on the roughness analysis of aluminum alloys structural parts based on direction-paralleled machining parameters. Experiments of different cutting line speed and fede rate are analyzed. The results show that with the increase of scallop-height,surface roughness will keep to a certain extent,higher cutting feed and lower federate can guarantee better surface roughness in the experiment condition.