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Published in:
2017 | OriginalPaper | Chapter
5. Novel Surface Generation of Complex Hybrid Freeform Surfaces
Author : Dennis Wee Keong Neo
Published in: Ultraprecision Machining of Hybrid Freeform Surfaces Using Multiple-Axis Diamond Turning
Publisher: Springer Singapore
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Abstract
This chapter presents a novel surface generation technique with multiple machining axes to address the loss of symmetrical axes in the machining of complex hybrid freeform surfaces. An automated Guilloche machining technique (AGMT) has been developed in the multiple-axis diamond turning machine to address the loss of symmetry. Fresnel lens array is one of these complex hybrid freeform surfaces, which consists of several elements of Fresnel lenses arranged in a rectangular or hexagonal layout. In general such array of Fresnel lenses is manufactured individually and assembled, which cannot be achieved in a single process.