Surface characterization of die inserts used for LED lamp plastic lenses
详细信息 查看全文
- 作者：Ali Aidibe ; Mojtaba Kamali Nejad…
- 关键词：Plastic lenses ; Injection molding ; Roughness ; Surface texture ; Surface topography ; LED
- 刊名：The International Journal of Advanced Manufacturing Technology
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：88
- 期：9-12
- 页码：3395-3403
- 全文大小：
- 刊物类别：Engineering
- 刊物主题：Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design;
- 出版者：Springer London
- ISSN：1433-3015
- 卷排序：88
文摘
The main objective of this paper is to investigate the effect of material characteristics and manufacturing processes on the surface textures of diamond cut inserts used for injected plastic optics in lighting applications. An overview of surface texture measurement is presented followed by an experimental procedure developed on 18 different die insert samples. A list of profile (2D) and areal (3D) surface texture measurement parameters characterizing the surface of the different samples is presented. The results of the analysis show that the average absolute roughness Ra, which is commonly used in industry, is not the only parameter representing the surface texture and is not a reliable discriminator for different types of surface textures. By using a principal component analysis technique, a list of significant parameters is proposed for a more accurate characterization of the surfaces resulting from different high precision diamond cutting processes. It is shown that the proposed parameters can be considered as optimum descriptors of the condition of the surface in diamond cutting and are those that show the greatest sensitivity to process variables.