An Optimization Method for Geometric Error of Machine Tool Based on NSGA-II

Abstract:

Balancing the cost and processing precision of machine tool by the method of error allocation without affecting the machining performances is a critical problem in the Machine tool industry. In this paper, a new accuracy allocation method for multi-axis machine tool based on Multi-body system theory, manufacturing and quality loss costs and relationship between tolerances and accuracy parameters of components is proposed. This optimization method is performed with Non-Dominated Sorting Genetic Algorithm II algorithm using Isight and Matlab software. A three-axis vertical machine tool is taken as an example to demonstrate the method, and the optimization results show that the accuracy allocation method proposed is feasible in the optimization of geometric errors on the premise of satisfying machining accuracy requirements.

• Periodical: Applied Mechanics and Materials (Volume 418)
• Pages: 180-186
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.418.180
• Online since: September 2013
• Authors: Li Gang Cai, Cui Zhang, Qiang Cheng, Pei Hua Gu, Hong Ying Wang
• Keywords: Geometric Error Optimization, Machine Tool, Multi Body System (MBS) Theory, Quality Loss Function

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