Study on burr formation in micro-machining using micro-tools fabricated by micro-EDM
- 作者：Gwo-Lianq Chern ; Ying-Jeng Engin Wu ; Jyun-Cheng Cheng ; Jian-Cheng Yao
- 关键词：Burr formation ; Micro-tool ; Micro-machining ; Micro-EDM ; WEDG ; Micro-milling ; Grinding
- 刊名：Precision Engineering
- 出版年：2007
- 期刊代码：145_01416359
- 类别：et
- 出版时间：April 2007
- 卷：31
- 期：2
- 页码：122-129
- 文件大小：1432 K
摘要
The purpose of this study is to study burr formation in micro-machining using micro-tools. The micro-tools employed are fabricated by micro-EDM using the wire electro-discharge grinding (WEDG) method in the micro-EDM/milling machine we had already developed. Micro tungsten-carbide tool with a minimum of 31-μm in diameter had been fabricated. The simple-shaped micro-tool fabricated is able to perform the micro-machining operation which is a combination of micro-milling and grinding processes. Micro-slot and micro thin-walled structure had been produced on Al 6061-T6 materials successfully. Burr formation in micro-machining is investigated experimentally and classified into four types: primary burr, needle-like burr, feathery burr and minor burr. Formation mechanisms of these burrs and the relationship between their existence and the machining condition are discussed.