基于正交试验的淬硬模具钢球头铣削加工表面粗糙度研究

2018-07-25

作者：王绪昌1，2，周咏辉1，2，赵军1，2 单位：1山东大学高效洁净机械制造教育部重点实验室；2机械工程国家级实验教学示范中心

摘要：采用正交试验法研究整体硬质合金球头铣刀铣削加工淬硬模具钢Cr12MoV时切削参数对零件加工表面粗糙度的影响。设计了以主轴转速、每齿进给量、径向切深、侧偏角和前倾角为主要因素的5水平5因素正交试验，通过极差分析和方差分析方法研究了切削参数对表面粗糙度的影响规律，明确了主要影响因素。结果表明：表面粗糙度随每齿进给量和径向切深的增大而增大，随主轴转速的增大而减小，随侧偏角和前倾角的增大呈现出先减小后增大的趋势，各因素的影响程度从大到小依次为每齿进给量、径向切深、主轴转速、侧偏角、前倾角。

关键词：正交试验；淬硬模具钢；加工参数；表面粗糙度

中图分类号：TG54；TH161文献标志码：A

Study on Surface Roughness of Ballend Milled Hardened Die Steel

Based on Orthogonal Experiment

Wang Xuchang，Zhou Yonghui，Zhao Jun

Abstract:The effect of milling parameters on surface roughness of ballend milled hardened die steel Cr12MoV with carbide tools was investigated by orthogonal experiments.Orthogonal tests are conducted according to a designed fivefactor and fivelevel orthogonal test table.Spindle speed，feed per tooth，radial depth of cut，tilt angle and lead angle are selected as the main factors.The dependence of surface roughness on cutting parameters is analyzed by maximum difference analysis and analysis of variance（ANOVA），and then the main influence factor on surface roughness is confirmed.The results show that the surface roughness increases with the increases in feed per tooth and radial width，and decreases with the increase of spindle speed.Moreover，surface roughness decrease with the increase of tilt angle and lead angle first and then increases.The influence degree in feed per tooth，radial depth of cut，spindle speed，tilt angle and lead angle on surface roughness is in decreasing order.

Keywords:orthogonal experiment；hardened die steel；machining parameter；surface roughness