There are still significant challenges in the accurate and uniform manufacturing of microlens
arrays (MLAs) with advanced ultra-precision diamond cutting technologies due to …

The primary component of ultra-precision machining machines and measuring instruments
is a high-precision spindle, and spindle error affects the accuracy of these machines …

This paper describes coordinate system definition and transfer for five-axis machining of
additively-manufactured preforms. In this method, a set of fiducials are attached to the …

Achieving high form accuracy of optical freeform surfaces in machining is extremely difficult
due to their geometric complexity. A positioning or repositioning process is necessary for …

This paper presents an any-degrees-of-freedom (anyDOF) registration method for the
characterization of freeform surfaces. The method attempts to fill the research gap regarding …

高超精密回转轴在高端装备中应用广泛, 而回转运动误差会影响这些设备的精度.
第一类传统的回转运动误差测量技术往往需要一个高精度标准器件作为参考 …

Surface metrology is an essential operation to determine whether the quality of
manufactured surfaces meets the design requirements. In order to improve the surface …

摘要光学自由曲面是现代精密光学领域的重大变革, 因其优异的光学, 力学性能而有望进一步
推进光学系统实现微型化, 轻量化, 集成化. 随着光学自由曲面的面形复杂度不断提升 …

In this paper, a fiducial-aided reconfigurable artefact is presented for estimating volumetric
errors of multi-axis machine tools. The artefact makes use of an adjustable number of …

The freeform surface quality is limited by the measurement, and form error cannot be
convergent via compensation machining. This paper proposed a surface matching …