Call for Papers
IJAT Vol.14 No.3, May 5, 2020
Special Issue on Machine Accuracy Evaluation
Submission Deadline: September 27, 2019
|Guest Editors:||Prof. Dr. Soichi Ibaraki, Hiroshima University, Japan|
Prof. Dr. Andreas Archenti, KTH Royal Institute of Technology, Sweden
|Inquiry:||IJAT Contact form or e-mail to IJAT Editorial Office|
The accuracy of a three-dimensional (3D) positioning system can ultimately be evaluated by measuring a 3D vector between command and actual end effector positions at arbitrary points over the entire workspace. This is a simple and yet challenging metrological problem. The motion accuracy of a machine tool is traditionally evaluated on an axis-to-axis basis, with every error motion of every axis independently measured as a one-dimensional measurement in a different setup. Research efforts have offered several new measurement technologies toward the ultimate goal of 3D position measurement over the entire workspace. Lately, to orientate a tool or a workpiece, more machine tools have rotary axes. The evaluation of both translational and angular error motions of rotary axes is essential. The application of this type of new 3D position/orientation measuring technique is not limited to a machine tool or a coordinate measuring machine (CMM). The applications of an industrial robot could be significantly expanded if its absolute 3D positioning accuracy were guaranteed to a certain level over its entire workspace. New applications for such a robot could include machining, but a new accuracy measurement scheme would be essential.