Analysis and Compensation Strategy of Non-Linear Error in Five-Axis CNC Machining

• Published in: Applied Mechanics and Materials Vol. 644-650; pp. 4967 - 4970
• Main Authors: Zhao, Ji Bin, Zhang, Ai Guo, Liu, Jun, Liu, Hong Jun, Shang, Jin
• Format: Journal Article
• Language: English
• Published: Zurich Trans Tech Publications Ltd 01.09.2014
• Subjects: Non-Linear Error; Tool Position; Complex Surface; Five-Axis CNC Machining
• ISBN: 9783038352464; 3038352462
• ISSN: 1660-9336; 1662-7482; 1662-7482
• DOI: 10.4028/www.scientific.net/AMM.644-650.4967

This paper presents a new strategy of analysis and compensation of non-linear error. Non-linear error is an important source of machining error in multi-axis numerical controlled machining and it is unavoidable. In view of tool positions optimization in five-axis CNC machining of complex surface, this paper presents a strategy for non-linear error compensation in five-axis machining: Firstly, non-linear error caused by the change of tool axis vector is analyzed and the non-linear error model is established, in order to get the maximum non-linear error of interpolation segment; Then, the tool position that meets the machining accuracy is obtained; Finally, Simulation and analysis of the model show that the proposed method is effective and greatly improves the geometric accuracy.