摘要
基于正交试验,采用Al_(2)O_(3)-TiCN涂层硬质合金刀具干切削N型HT250灰铸铁,研究切削速度、进给量和背吃刀量对表面粗糙度的影响及机制,为N型HT250的切削提供理论依据。结果表明:Al_(2)O_(3)-TiCN涂层硬质合金刀具切削N型HT250的表面粗糙度优于普通HT250,尤其在低切削速度(v_c=100 m/min)的情况下,N型HT250表面粗糙度更具优异性;对N型HT250表面粗糙度影响最显著的因素是进给量,其次是背吃刀量,切削速度对表面粗糙度的影响程度相对较小;表面粗糙度随着进给量的增加而显著增加,随着背吃刀量的增加先减小后增大,当a_p=1 mm时,表面粗糙度综合表现最佳。
Based on the orthogonal experiment,Al2O3-TiCN carbide alloy coated tools were used for dry cutting of N-type HT250 gray cast iron.The effect and mechanism of cutting speed,feed rate and back engagement of cutting edge on surface roughness were studied to provide a theoretical basis for N-type HT250 cutting.The results show that the surface roughness of cutting N-type HT250 using Al_(2)O_(3)-TiCN carbide coated alloy tool is better than that of ordinary HT250.Especially in the case of low cutting speed(vc=100 m/min),N-type HT250 surface roughness is more excellent.The most significant factor affecting the surface roughness of N-type HT250 is the feed rate,followed by back engagement of cutting edge,and the influence of cutting speed is relatively small.The surface roughness increases with the increase of feed rate,and decreases first and then increases with the increase of back engagement of cutting edge.When ap=1 mm,the comprehensive performance of the surface roughness is the best.
作者
林勇传
朱能熠
王凯
何春华
LIN Yongchuan;ZHU Nengyi;WANG Kai;HE Chunhua(School of Mechanical Engineering,Guangxi University,Nanning Guangxi 530004,China;Department of Vehicle and Electrical Engineering,Shijiazhuang Campus,Army Engineering University of PLA,Shijiazhuang Hebei 050003,China;Guangxi Yulin Yuchai Machinery Parts Manufacturing Co.,Ltd.,Yulin Guangxi 537000,China)
出处
《机床与液压》
北大核心
2021年第14期47-50,共4页
Machine Tool & Hydraulics
基金
校企科技合作资助项目(PS-JSZX-20180925)。
关键词
表面粗糙度
N型灰铸铁
切削参数
Surface roughness
N-type gray cast iron
Cutting parameters
