Continuous measurements with single setup for position-dependent geometric errors of rotary axes on five-axis machine tools by a laser displacement sensor

2018 ◽  
Vol 99 (5-8) ◽  
pp. 1589-1602 ◽  
Author(s):  
Yixuan Guo ◽  
Xiaoqi Tang ◽  
Xiangdong Zhou ◽  
Bao Song ◽  
Zhouxiang Jiang ◽  
...  
Keyword(s):  
Machine Tools ◽  
Displacement Sensor ◽  
Geometric Errors ◽  
Laser Displacement Sensor ◽  
Rotary Axes ◽  
Continuous Measurements ◽  
Five Axis

Formulation of Influence of Machine Geometric Errors on Five-Axis On-Machine Scanning Measurement by Using a Laser Displacement Sensor

2015 ◽  
Vol 137 (2) ◽  
Author(s):  
Soichi Ibaraki ◽  
Yoshihiro Kimura ◽  
Yu Nagai ◽  
Shizuo Nishikawa
Keyword(s):  
Measurement Uncertainty ◽  
Spherical Surface ◽  
Uncertainty Assessment ◽  
Displacement Sensor ◽  
Experimental Comparison ◽  
Geometric Errors ◽  
Laser Displacement Sensor ◽  
Low Pass ◽  
Continuous Scanning ◽  
Five Axis

For on-machine measurement of workpiece position, orientation, and geometry on machine tools, five-axis continuous (scanning) measurement by using a laser displacement sensor has a strong advantage in its efficiency, compared to conventional discrete measurement using a touch-triggered contact probe. In any on-machine measurement schemes, major contributors to their measurement uncertainty are error motions of the machine tool itself. This paper formulates the influence of geometric errors of rotary axis average lines on the measurement uncertainty of the five-axis on-machine measurement by using a laser displacement sensor. To validate the present simulator, experimental comparison of measured and simulated trajectories is conducted on five-axis on-machine measurement of a precision sphere of the precalibrated geometry. For total 28 paths measured on the spherical surface, an error in the simulated trajectories from measured trajectories (properly low-pass filtered) was at maximum 5 μm. Uncertainty assessment demonstration for more practical application example of a turbine blade measurement is also presented.

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