A Ball Diameter Measuring Instrument Based on Optical Interferometry for Hemisphere Dynamic Pressure Motors

DUAN Rong; WANG Jing; YUE Chunguo; DONG Qingyu

doi:10.12338/j.issn.2096-9015.2021.0032

Volume 65 Issue 12

Dec. 2021

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DUAN Rong, WANG Jing, YUE Chunguo, DONG Qingyu. A Ball Diameter Measuring Instrument Based on Optical Interferometry for Hemisphere Dynamic Pressure Motors[J]. Metrology Science and Technology, 2021, 65(12): 55-59. doi: 10.12338/j.issn.2096-9015.2021.0032

Citation:

DUAN Rong, WANG Jing, YUE Chunguo, DONG Qingyu. A Ball Diameter Measuring Instrument Based on Optical Interferometry for Hemisphere Dynamic Pressure Motors[J]. Metrology Science and Technology, 2021, 65(12): 55-59. doi: 10.12338/j.issn.2096-9015.2021.0032

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A Ball Diameter Measuring Instrument Based on Optical Interferometry for Hemisphere Dynamic Pressure Motors

doi: 10.12338/j.issn.2096-9015.2021.0032

Beijing Institute of Aerospace Control Devices, Beijing 10039, China

Available Online: 2021-08-18
Publish Date: 2021-12-01

Abstract

Abstract

As the precision of the spherical couple parts (i.e. the hemisphere and the ball bowl) of a hemisphere dynamic pressure motor is very high, their ball diameter and sphericity measurement during fabricating process have to rely on high precision three-dimensional and roundness measuring instruments. Therefore the measuring process is tedious, complicated, time-consuming, and inefficient. For a long time, it has been one of the bottlenecks that reduce efficiency in the manufacture of hemisphere dynamic pressure motors. In this paper, a ball diameter measuring instrument developed on the basis of the principal of optical interference is introduced. Its application showed that it featured simple operation, high precision, and visible results. It can be used for in-situ measurement while the parts are under fabrication, which greatly improves the measurement efficiency. It has great potential for increasing the efficiency of manufacture of hemisphere dynamic pressure motors and other spherical parts as well.
- hemisphere dynamic pressure motor,
- optical interference,
- interference aperture,
- ball diameter,
- sphericity

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References(15)

References

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