摘要
针对饰面刨花板铣削过程中铣削表面质量低及刀具磨损过快的特点,本文采用CrN涂层硬质合金刀具对饰面刨花板进行了低高速铣削试验。对切削过程中的铣削表面质量及刀具磨损形态和磨损原因进行了分析研究。试验结果表明:低速切削条件下,饰面刨花板铣削表面极易产生毛刺和凹坑;高速切削条件有助于降低饰面刨花板铣削表面粗糙度和提高表面质量;低速切削条件下,CrN涂层硬质合金刀具的磨损主要是在后刀面切削刃口处出现了微小的崩刃,磨损原因为磨料磨损;高速切削条件下,CrN涂层硬质合金刀具的磨损主要是在后刀面切削刃口处,表现为涂层剥落和基体磨损,这种涂层的早期剥落及基体磨损造成了涂层刀具早期失效。因此,可以认为高速切削虽然大幅度提高了饰面刨花板铣削效率和表面质量,但是也同时加快了CrN涂层刀具的早期失效。
The low and high speed milling test of the decorative particleboard was carried out with the CrN coated carbide cutting tools,according to the low cutting surface quality and the fast tool wear.And the surface quality,tool wear pattern,and wear mechanism were analyzed and studied in this paper.It had been found that the milling surface of the decorative particleboard was easy to produce burrs and pits under the condition of low speed cutting.It was helpful to reduce the surface roughness and improve the surface quality of the finishes in the condition of the high speed cutting.Under the low speed cutting condition,the wear of the CrN coated cemented carbide tool was mainly the slight chipping of the cutting edge,and the abrasive wear was significant.Under the high speed cutting condition,the wear of the CrN coated tool was mainly in the cutting edge,showing the peeling and chipping of the coating material,and the early peeling of the coating caused the early failure of the coated tool.Thus,it can be considered that high speed cutting can improve the productivity and the quality of the milling surface,but also speed up the early failure of the CrN coated tool.
作者
郭晓磊
张清
朱兆龙
庆振华
GUO Xiaolei;ZHANG Qing;ZHU Zhaolong;QING Zhenhua(College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,Jiangsu,China;Leitz Tooling Systems Co.,Ltd.,Nanjing 211100,Jiangsu,China;College of Mechanical Engineering,Hefei University of Technology,Hefei 230009,Anhui,China)
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2018年第10期112-116,共5页
Journal of Central South University of Forestry & Technology
基金
国家自然科学基金项目(31500480)
关键词
涂层刀具
饰面刨花板
切削速度
表面质量
刀具磨损
coated tool
decorative particleboard
cutting speed
surface quality
tool wear
