Research on grinding performance of micro-structured CVD diamond wheel for BK7 optical glass
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2021-12-13 |
| Authors | Han Liu, Chunyu Zhang, Junwei Liu, Qingliang Zhao, Bing Guo |
| Institutions | Harbin Institute of Technology, Laser Research Institute |
| Citations | 1 |
Abstract
Section titled āAbstractāBK7 optical glass is widely used as aerospace optical window. Precision grinding is a common method for machining BK7 optical elements. CVD diamond grinding wheel is a cutting tool with excellent wear resistance, which can realize high efficiency grinding for BK7. However, due to its small chip space, the surface quality will be affected by the large grinding force and difficult chip removal. In this paper, micro-grooves with different angles and widths were fabricated on CVD diamond grinding wheel surfaces by picosecond laser to improve the chip space. The grinding experiments of BK7 were carried out using these micro-structured wheels. The results show that the grinding force was reduced by 80% at most compared with the unstructured wheel, and the machined surface roughness was also decreased by up to 85%. The grinding force of structured CVD diamond grinding wheel decreases with the increase of the surface micro-structure groove angle. With the increase of groove width on the surface of structured CVD diamond grinding wheel, the surface roughness of the workpiece decreases first and then increases. When the groove width is 80Ī¼m, the surface roughness of the workpiece reaches the minimum value.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
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- 2018 - Laser micro machining of micro-structures on CVD diamond[C]