Abstract
A ball endmill made of single-crystalline diamond was used for cutting micro-structures on two kinds of mold materials, oxygen-free copper, and reaction-bonded silicon carbide (RB-SiC). The cutting performance of the ball endmill was investigated by examining surface roughness and form accuracy of the machined workpiece as well as tool wear characteristics. Micro-dimple arrays, micro-grooves, and micro-pyramid arrays with extremely smooth surface and high-accuracy profile could be obtained on oxygen-free copper without remarkable tool wear. When machining RB-SiC, however, tool flank wear takes place, leading to a rough surface finish. After the tool has worn off, the cutting performance of the endmill significantly depended on the tool feed direction. The optimum tool feed direction for micro-grooving was experimentally investigated.
| Original language | English |
|---|---|
| Pages (from-to) | 957-964 |
| Number of pages | 8 |
| Journal | International Journal of Advanced Manufacturing Technology |
| Volume | 51 |
| Issue number | 9-12 |
| DOIs | |
| Publication status | Published - 2010 Dec |
| Externally published | Yes |
Keywords
- Diamond tool
- Dimple
- End milling
- Groove
- Hard material
- Lens array
- Micro-cutting
- Mold fabrication
- Structured surface
- Tool wear
ASJC Scopus subject areas
- Control and Systems Engineering
- Software
- Mechanical Engineering
- Computer Science Applications
- Industrial and Manufacturing Engineering