摘要
通过铝合金薄壁工件切削试验,对铣削加工中表面粗糙度的影响机理进行分析,建立了铝合金薄壁工件表面粗糙度预测模型,采用多元回归正交分析法获得了表面粗糙度的经验公式。结合正交试验的极差分析,获取不同的加工参数对表面粗糙度的影响显著性。并基于表面粗糙度,以材料去除率为优化目标,对切削参数进行优化。研究结果表明,切削参数对表面粗糙度的影响显著性为:每齿进给>切削宽度>切削速度;较优化的切削参数为:切削速度201 m/min,每齿进给0.19 mm/齿,径向切宽11 mm。为铝合金工件的铣削加工提供理论方法和试验依据。
Through the aluminum alloy thin -walled parts cutting tests, analyzing surface roughness influence mechanism in milling, a prediction model of surface roughness for thin - walled aluminum alloy parts was established, the experience formula of surface roughness was obtained by using the method of multiple regression orthogonal. Combining with orthogonal test analysis of the poor, the significant of influence on surface roughness are obtained under different processing parameters. Based on the surface roughness, the cutting parameters are optimized by using the material removal rate as optimization objective. The research results show that the significant of influence to surface roughness is in sequence of feed per tooth, cutting width,cutting speed; the optimized cutting parameters are cutting speed 201 m/min, feed per tooth 0. 19 mm, and radial width 11 mm. This research provided theoretical method and experimental basis for milling of aluminum alloy parts.
出处
《制造技术与机床》
北大核心
2017年第7期140-146,共7页
Manufacturing Technology & Machine Tool
关键词
铣削加工
表面粗糙度
切削参数优化
材料去除率
milling
surface roughness
cutting parameters optimization
material removal rate
