摘要
微铣削以其加工精度高、成形能力强在微加工领域得到了越来越广泛的应用,作者针对微铣削表面粗糙度开展试验研究,分析了微铣削表面粗糙度以及微铣刀刀具磨损对其影响规律。首先,采用0.1 mm铣刀开展实验建立微铣削表面粗糙度测量和分析方法,研究其与传统铣削加工表面粗糙度的差异,并分析得到其根本原因可能是微铣削最小切削厚度导致的;然后,针对微型刀具磨损开展大量实验和测量,观察了微型刀具的磨损形式,研究了表面粗糙度随刀具磨损的发展规律,分析得到影响微铣削表面粗糙度的主要因素为主轴转速和材料去除量,为微铣削加工研究提供了实验基础。
Micro milling process is one of the most attractive technologies applied in the micro manufacturing because of its high machining accuracy and forming capability.This paper conducted experimental studies on surface roughness of micro milling.Micro tool wear and its effects on surface generation are investigated.Firstly,experimental analysis for surface roughness and measurement approaches were performed based on the micro-end-milling experiments of OFHC Copper by using 0.1 mm diameter micro milling tools with the miniaturized machine tool. It could be concluded that the minimum chip thickness is the root cause of difference between micro and macro scale milling.Secondly,the micro tool wear was studied.The experimental results show that the development of the tool wear has significant effects on the surface generation of micro milling process.The cutting velocity and material removal volume are found to be the main factors that affect the tool wear,which will in turn affect the surface roughness significantly.This paper provided large amounts of experimental results for micro milling process studies.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2010年第14期187-191,共5页
Journal of Wuhan University of Technology
关键词
微铣削
表面粗糙度
刀具磨损
最小切削厚度
micro-end-milling
surface roughness
tool wear
minimum chip thickness
