金刚石与磨料磨具工程2017，Vol.37Issue(3)：46-54,9.DOI:10.13394/j.cnki.jgszz.2017.3.0010
亚微观倒棱切削刃对硬质合金刀片切削性能的影响特性研究
Influencing characteristic of submicroscopic chamfering cutting edge on the cutting property of cemented carbide insert
摘要
Abstract
In order to study the action mechanism of micro cutting edge form of carbide insert on the cutting performance, aiming at the problems of tipping and brittle fracture of carbide insert during interrupted cutting, interrupted cutting experiments are carried out using two different grades of cemented carbide indexable inserts under the condition of multiple submicroscopic structures of cutting edge.The three dimensional stress analyzer and high-speed camera are used to data monitoring and collection of impact and cutting force in the cutting process.Then the strengthening effect mechanism of the micro chamfering edge on the cemented carbide insert is researched combining with graphic statistical analysis method with the goal of revealing the influence rule of cutting edge geometry parameters on the blade life, proposing the curvilinear relationship between chamfering edge parameters and feed rate.The results prove that the larger critical angle βC, chamfer angle β and the smaller chamfering width L should be selected under the condition of large feed rate f.Conversely, the smaller critical angle βC, chamfer angle β and the larger chamfering width L have better performance under the small feed rate f.The results can provide data and technical support for the strengthening design of cemented carbide indexable insert.关键词
亚微观刃口/强化作用/结构强度/断续切削/切削性能Key words
submicroscopic edge/strengthening effect/structural strength/interrupted cutting/cutting property分类
矿业与冶金引用本文复制引用
何耿煌,李凌祥,邹伶俐,程程,刘献礼..亚微观倒棱切削刃对硬质合金刀片切削性能的影响特性研究[J].金刚石与磨料磨具工程,2017,37(3):46-54,9.基金项目
重大科技成果产业化《模具钢加工用高性能整体硬质合金铣刀产业化》项目(编号:3502Z20161009) （编号:3502Z20161009）
