i discover this method and think it is is a great help-tool to perfect position and align the robot with a complex model that is on the table ready for trimming or maching without having anykind of jig.
it is also great if you don't have any 3D CAD model information.
Video to describe the process:
With this method you are putting all the precise coordinates from the robot directly into CAD and CAM software, without any aditional hardware.
Because you are getting points/information with the robot, all information that goes into the CADCAM is more accurate.
Cell calibration little errors can be reduce because you are reversing the path that you usually work with. Robot to software instead of software to robot. This could be extremely useful, for eg. the software to create sub self calibration routines.
If this process helps anyone please be free to pm for any doubt.
ps: sorry for my english but....portuguese style