Effect of Machining Parameters on Hole Accuracy and Burr Formation in Micro-Drilling of Brass
| Autor: | Iskandar Hasanuddin, Teuku Firsa, Aulia Udink, Muhammad Tadjuddin |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Radiation Materials science Metallurgy 02 engineering and technology Condensed Matter Physics Brass Burr formation 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Machining visual_art visual_art.visual_art_medium General Materials Science Micro drilling |
| Zdroj: | Defect and Diffusion Forum. 402:73-80 |
| ISSN: | 1662-9507 |
| DOI: | 10.4028/www.scientific.net/ddf.402.73 |
| Popis: | Micromachining technology is a challenge in industrial production to meet the demand for components for machinery. In this research, a study of the best parameters was required to produce the best hole accuracy and the lowest burr formation in the inlet and exit holes using micro-drilling. The work-piece material and cutting tool used respectively was a brass plate with a thickness of 0.5 mm and a micro drill with a diameter of 0.2 mm commonly used for electronic PCBs. The quality of holes was measured and observed by using a stereomicroscope (optical equipment). This microscope can zoom up to 50x objects to facilitate measurement. The microscope was attached by using a digital camera type YW-200 so that the object of observation could be measured using a computer. The result shows that the largest deviation of hole diameter (0.217 mm) occurred at a spindle speed of 14,000 rpm with the lowest feed rate (5 mm/min). Meanwhile, the smallest deviation of hole diameter (0.202 mm) occurred at a spindle speed of 20,000 rpm with a maximum feed rate of 10 mm/min. The maximum burr height (0.050 mm) occurred at a spindle speed of 17,000 rpm and a feed rate of 10 mm/min. In addition, the minimum burr height (0.038 mm) occurred at a spindle speed of 14,000 rpm and a feed rate of 5 mm/min. Therefore, it can be concluded that the deviation of hole diameter was inversely proportional to the spindle speed, and the height of the burr formation was directly proportional to the feed rate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|