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Modeling Approach of Regression Orthogonal Experiment Design for thermal error compensation of CNC Turning Center

厦门大学学报（自然科学版） 2002年第S1期41卷 23-页

作者： DU Zheng-chun, YANG Jian-guo, YAO Zhen-qiang, REN Yong-qiang (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, China)

The thermal induced errors can account for as much as 70% of the dimensional errors on a workpiece. Accurate modeling of errors is an essential part of error compensation. Base on analyzing the existing approaches of the thermal error modeling for machine tools, a new approach of regression orthogonal design is proposed, which combines the statistic theory with machine structures, surrounding condition, engineering judgements, and experience in modeling. A whole computation and analysis procedure is given. Therefore, the model got from this method are more robust and practical than those got from the present method that depends on the modeling data completely. At last more than 100 applications of CNC turning center with only one thermal error model are given. The cutting diameter variation reduces from more than 35 μm to about 12 μm with the orthogonal regression modeling and compensation of thermal error.

关键词： regression orthogonal thermal error compensation robust modeling CNC machine tool

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thermal error Analysis and Modeling for error compensation on Gear Hobbing Machine

Thermal Error Analysis and Modeling for Error Compensation o...

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第八届真空冶金与表面工程学术会议

作者： Guo Qianjian Yang Jianguo Wang Xiushan (School of mechanical engineering, Shanghai Jiao Tong University, Shanghai, 200030, China)

Based on the synthetic analysis of thermal error source on gear hobbing machine, a new ICA (Independent component analysis) method is proposed in order to optimize the location of temperature sensor in this paper. A least squares modeling approach is also proposed to fulfill the thermal error modeling of gear hobbing machine. Finally, the hardware system of thermal error compensation is presented, and it is tested on Y3150 K hobbing machine. The experimental results shows that the gear machining accuracy can be improved about 2 grades through thermal error compensation, and the system is very effective.

关键词： Gear Hobbing Machine ICA Method Least Squares Model thermal error compensation

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CNC thermal compensation Based on Mind Evolutionary Algorithm Optimized BP Neural Network

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World Journal of Engineering and Technology 2016年第1期4卷 38-44页

作者： Yuefang Zhao Xiaohong Ren Yang Hu Jin Wang Xuemei Bao Sichuan University of Science & Engineering Zigong China

thermal deformation error is one of the most important factors affecting the CNCs’ accuracy, so research is conducted on the temperature errors affecting CNCs’ machining accuracy;on the basis of analyzing the unpredictability and pre-maturing of the results of the genetic algorithm, as well as the slow speed of the training speed of the particle algorithm, a kind of Mind Evolutionary Algorithm optimized BP neural network featuring extremely strong global search capacity was proposed;type KVC850MA/2 five-axis CNC of Changzheng Lathe Factory was used as the research subject, and the Mind Evolutionary Algorithm optimized BP neural network algorithm was used for the establishment of the compensation model between temperature changes and the CNCs’ thermal deformation errors, as well as the realization method on hardware. The simulation results indicated that this method featured extremely high practical value.

关键词： thermal errors thermal error compensation Genetic Algorithm Mind Evolutionary Algorithm BP Neural Network

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数控滚齿机热误差分析与建模研究(英文)

数控滚齿机热误差分析与建模研究(英文)

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第八届全国真空冶金与表面工程学术会议

作者：郭前建杨建国王秀山上海交通大学

Based on the synthetic analysis of thermal error source on gear hobbing machine, a new ICA (Independent component analysis) method is proposed in order to optimize the location of temperature sensor in this paper. A least squares modeling approach is also proposed to fulfill the thermal error modeling of gear hobbing machine. Finally, the hardware system of thermal error compensation is presented, and it is tested on Y3150K hobbing machine. The experimental results shows that the gear machining accuracy can be improved about 2 grades through thermal error compensation, and the system is very effective.

关键词： Gear hobbing machine ICA method Least squares model thermal error compensation

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