R-Test Analysis Software for Error Calibration of Five-Axis Machine Tools – Application to a Five-Axis Machine Tool with Two Rotary Axes on the Tool Side –
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- Ibaraki Soichi
- Department of Micro Engineering, Kyoto University
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- Nagai Yu
- Department of Micro Engineering, Kyoto University
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- Otsubo Hisashi
- Otsubo Engineering Research Center
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- Sakai Yasutaka
- Fukuda Corporation
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- Morimoto Shigeki
- Fukuda Corporation
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- Miyazaki Yosuke
- Fukuda Corporation
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Abstract
<p>The R-test measures the three-dimensional displacement of a precision sphere, attached to a machine spindle, by using three displacement sensors fixed to the machine’s table. Its application to error calibration for five-axis machine tools has long been studied. This paper presents software for analyzing the measured R-test trajectories for error diagnosis and numerical compensation for rotary axis location errors and error motions. The developed software first graphically presents the measured R-test trajectories to help a user intuitively understand error motions of the rotary axes. It also numerically parameterizes the rotary axis geometric error parameters, and then generates a compensation table that can be implemented in some latest-generation commercial CNC systems. An actual demonstration of its application to a five-axis machine tool with a universal head (two rotary axes on the spindle side) is presented.</p>
Journal
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- International Journal of Automation Technology
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International Journal of Automation Technology 9 (4), 387-395, 2015-07-05
Fuji Technology Press Ltd.
