摘要
在高速硬态切削过程中,涂层刀具高速切削失效形态分为非正常磨损(破损)与正常磨损两种。刀具非正常磨损失效发生在低速切削时,而高速切削过程中的刀具失效形式倾向于后刀面磨损、边界磨损和切削刃斜面磨损等多种正常磨损形式的组合。本文通过涂层刀具高速车削45#钢的试验,研究了刀具磨损对工件表面质量的影响。试验表明:提高切削速度,工件已加工表面质量并未随刀具磨损情况加剧而呈线性下降,刀具磨损对已加工表面质量负面影响作用的减轻,使表面质量在一定程度上得到了改善。
The high speed cutting tool is disabled in two forms of normal wear and nolmormal wear as HSC proceeds. Tool nonnormal wear occurs in low speed cutting. In process of HSC, the tool disability is the combination of flank face wear, boundary wear and cutting edge slope-plane wear. In this paper, the influence of tool wear on the surface quality of the part is studied through experiments of high-speed turning 45 # steel with coated tool. The results show that under the action of the tool cutting movement, the ridges, furrows, burntthrough speckles and the molten metal daub phenomena come into being on the machined surface. With cutting speed increasing, it is weakened that tool wear has adverse effects on the forming of machined surface, and the workpiece surface quality is improved to＇a certain extent.
出处
《工具技术》
2009年第5期28-30,共3页
Tool Engineering
关键词
高速硬态切削
涂层刀具
磨损
表面形貌
high speed and hard cutting, coated carbide tool, wear, surface topography
