Diamond turning of diffractive microstructures
Diamond turning of diffractive microstructures
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DOI：
10.1016/j.precisioneng.2015.05.007
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发表时间：
2015-10-01
影响因子：
3.6
通讯作者：
Meier, Axel
中科院分区：
文献类型：
--
作者：
Meier, Axel
金刚石加工是制造表面光洁度优良的衍射光学元件的一种合适的加工工艺。加工效果在很大程度上取决于被加工对象的材料。金刚石加工中常用的材料有很多。一种特别令人感兴趣的材料是镍银，它提供的硬度比铝或铜高得多。特别是对于加工锋利的边缘而言，这是一种有利的特性。然而，并不是所有的合金都同样适合加工。因此，本文研究了不同材料性能对加工力、毛刺和切屑形成的影响，最重要的是表面光洁度的影响。加工实验表明，毛刺和切屑的形成主要受加工策略的影响。另一方面，加工力在很大程度上取决于材料的成分，这也会影响表面光洁度，特别是局部表面缺陷。研究还发现，深轧产生的表面硬度的增加有助于减少已加工组织的塑性变形。(C)2015 Elsevier Inc.保留所有权利。
Diamond machining is a suitable technology for manufacturing of diffractive optics with excellent surface finish. The machining result depends on the workpiece material to a large extent. Many materials are commonly applied in diamond machining. One material of particular interest is nickel silver, which offers a comparably higher hardness than aluminium or copper. Especially for machining of sharp edges this is an advantageous property. However, not all alloys are equally suited for machining. Therefore, this paper investigates the influences of different material properties on process forces, burr and chip formation, and most importantly the surface finish. The machining experiments demonstrate that burr and chip formation are predominantly influenced by the machining strategy. The process forces on the other hand, largely depend on the material composition, which also affects the surface finish, especially local surface defects. It was also found that an increasing surface hardness, which was generated by deep rolling, supports the reduction of plastic deformations of the machined microstructures. (C) 2015 Elsevier Inc. All rights reserved.