Research on CNC machine tools reliability modeling based on weighted least squares method

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Jianqiao, Xiong^1 ; Li, Xue^1 ; Lu, Yong^1

School of Mechanical Engineering, Nanjing Institute of Technology, Nanjing, Jiangsu, China^1

关键词: CNC machine tools;    Failure data;    Numerical control machine tool;    Reliability model;    Reliability test;    Scale parameter;    Shape parameters;    Weighted least squares;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/5/052003/pdf
DOI  :  10.1088/1757-899X/490/5/052003

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Reliability test for a certain numerical control machine tool is carried out. Failure data is collected. On this basis, a reliability model is established. Inference is a Weibull distribution. The reliability model is also analyzed. The weighted least squares method is used to estimate the scale parameter alpha and the shape parameter beta of Weibull distribution. Research shows, this method can effectively establish the reliability model.