Laser tracker. Laser Trackers
In the typical laser interferometer measurement, the laser direction is fixed. The laser tracker can follow the moving target, in order to continuously measure the distance to the target.
 
 
The GPS (Global Positioning System), used for example in a car navigation system, estimated the three-dimensional position of the device by measuring the distances between multiple satellites and the device. Based on this principle, this project applies the laser tracker to the evaluation of volumetric errors of a machine tool. Its application to the accuracy calibration of 5-axis machines is also studied. The right photo shows the laser tracker set on our machining center.
 
 
In this study, we employ the laser tracker developed by the AIST (Advanced Industrial Science and Technology).
 
>> Publications: JE20, CE46, CJ55, CE42, CJ36
 
 
 
Laser tracker by AIST.
 
 
Laser tracker by AIST.
 
Figure 1: The laser tracker developed by the AIST. By monitoring the movement of the target by using a quad-detector, the laser direction follows the target by changing the direction of the mirror by the spherical motor.