Single Point Diamond Turning of Micro-structured Mold
| Autor: | Mu-En Lee, 李沐恩 |
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| Rok vydání: | 2019 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 107 Microstructures on surfaces of workpiece can provide additional functions. In recent years ultraprecision machining has been employed to manufacture accurate optical component with 3D structure for imaging and non-imaging applications. Axisymmetric micro grating array on contact lens mold can provide additional medical function. When the width of the micro-grating reduced, the curvature of the grating also reduced to a size close to the nose radius of the diamond tool.To transfer these micro grating features into numerical control code, the workpiece surfaces are presented as numerous data points. Due to abrupt slope changes, the cutting tool location on the edge of micro grating are discontinuous. Interference occurs when cutting tool center go through the discontinuous data points, which cause the width of the micro gratings are not precise enough. This project provides a tool path generating method which interference is not happening and precision of width of the micro grating is good by cutting experiments. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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