摘要
采用陶瓷刀具进行淬硬轴承钢GCr15的硬车削加工试验,并通过正交试验分析和方差分析给出试验范围内的最优加工参数组合。基于所建立的表面粗糙度经验模型,分析切削速度、进给量和刀尖圆弧半径对表面粗糙度的影响规律。试验与仿真分析表明,增大刀尖圆弧半径可有效降低已加工表面的表面粗糙度,而提高切削速度可使表面粗糙度略有下降;当进给量增大时,表面粗糙度几乎线性增加。同时,进给量对表面粗糙度的影响最大,刀尖圆弧半径次之,而切削速度的影响微弱。
Experimental investigation of surface roughness was performed in turning of hardened steel GCr15 with mixed ceramic inserts.Optimal cutting parameters were found to improve the machining performance based on design of experiment and analysis of variance.Simulations were done to describe the relationship between surface roughness and cutting parameters with the proposed predictive model of surface roughness.Experiments and simulations showed that increased nose radius and cutting speed help in improving the surface roughness,whereas increased feed rate deteriorate the surface roughness noticeably.At the same time,feed rate is found as the most influential parameter followed by nose radius on surface roughness.The contribution of cutting speed is very slight.
出处
《机械设计与制造》
北大核心
2013年第7期150-152,共3页
Machinery Design & Manufacture
关键词
表面粗糙度
硬车削
淬硬钢
陶瓷刀具
Surface Roughness
Finish hard Turning
Hardened Steel
Mixed Ceramic Inserts
