Design of precision hydrodynamic bearings for goniometer with radial gratings

Jianshe Wang; Yingshi Zhu

doi:10.1117/12.218679

6 September 1995 Design of precision hydrodynamic bearings for goniometer with radial gratings

Jianshe Wang, Yingshi Zhu

Proceedings Volume 2542, Optomechanical and Precision Instrument Design; (1995) https://doi.org/10.1117/12.218679
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

In order to enhance the measuring accuracy of angular displacement, it is important to form high accuracy and superior quality of moire fringe signals. They are strongly affected by the radial disturbance of grating disk which is mounted on the shaft of bearing system. Specifications for the hydrodynamic bearing system often call for much higher radial accuracy and stability. This requirement poses unique challenges for the design of the bearing system. In this paper, the design of precision three-lobe hydrodynamic bearings is described, and lubricant performance of some structure parameters is analyzed. The radial accuracy of this bearing system is within 0.023 micrometers .

Citation Download Citation

Jianshe Wang and Yingshi Zhu "Design of precision hydrodynamic bearings for goniometer with radial gratings", Proc. SPIE 2542, Optomechanical and Precision Instrument Design, (6 September 1995); https://doi.org/10.1117/12.218679

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