| Issue |
MATEC Web Conf.
Volume 95, 2017
2016 the 3rd International Conference on Mechatronics and Mechanical Engineering (ICMME 2016)
|
|
|---|---|---|
| Article Number | 07017 | |
| Number of page(s) | 4 | |
| Section | Mechanical Design-Manufacture and Automation | |
| DOI | https://doi.org/10.1051/matecconf/20179507017 | |
| Published online | 09 February 2017 | |
Design and Analysis of an Abbé Free Coplanar Stage
Dept. of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan
Design and analysis of a new Abbé free coplanar xy stage are presented in this paper. The xy stage is formed as conventional xy stages which combine with two stacked up linear guides. The x-guide is on the bottom and the y-guide is on top of the x-guide. The travel range of this xy stage is 300mm × 300mm, which fits dimensions of 12-inch wafers. A special mechanism is designed such that the z-surface of the y-guide has the same height as the z-surface of x-guide, and the Abbé error and cumulative error of this coplanar stage can be reduced. The concept of symmetric structure design is also considered to eliminate the structural deformation due to driving force of two guides. For this long travel range precision stage, the finite element method (FEM) is applied to analyze the structural deformation and vibration natural frequencies. The requirement of structural deformation due to self-weight load is limited to 1.5μm, and first natural frequency is limited to over 100 Hz.
© The Authors, published by EDP Sciences, 2017
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