Improved chip discharge in drilling of glass plate using back tapered electroplated diamond tool
| Autor: | Tohru Ishida, Kota Honda, Akira Mizobuchi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
geography Engineering drawing geography.geographical_feature_category Materials science Mechanical Engineering Drilling Thrust 02 engineering and technology 021001 nanoscience & nanotechnology Inlet Chip Industrial and Manufacturing Engineering 020901 industrial engineering & automation Brittleness Interference (communication) Electrical and Electronic Engineering Composite material 0210 nano-technology Electroplating Diamond tool |
| Zdroj: | International Journal of Precision Engineering and Manufacturing. 18:1197-1204 |
| ISSN: | 2005-4602 2234-7593 |
| Popis: | Previous studies of a through-hole drilling for hard and brittle materials using electroplated diamond tool devised by the authors have led to several challenges such as a restraint of crack size at the inlet and outside, a suppression of chip adhesion on the tool and an improvement of processing efficiency. In this paper, the devised tool was redesigned in order to restrain cracks of the inlet side as well as to improve the chip discharge. The new design of the tool featured a back taper which was expected to bring an effect of restraining crack size by preventing any interference between the tool cylindrical surface and the hole inner surface during drilling process. In addition, the chip can be discharged from the drilled hole through the back taper. Results of the experiment indicated that by providing the back tapered shape, the width of the inlet hole can be reduced slightly as the interference between the glass plate and the tool cylindrical surface was suppressed. Furthermore, the adhesion of chip on tool can be restrained by using the tool with large chip discharge space as the chip was easily discharged to the outside of the hole. Moreover, an abrupt change in thrust force was not detected, and the crack width was found in small size. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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