Reliability optimization and analysis of high speed motorized spindle

doi:10.16731/j.cnki.1671-3133.2018.07.016

Abstract

Abstract: Using the platform of ANSYS Workbench response surface optimization and Six Sigma reliability analysis,based on the static analysis of the motorized spindle,the optimization design of the reliability is carried out with the quality as the optimization state variable and the maximum deformation as the optimization objective;The geometric dimension,external load,elastic modulus and front and rear bearing stiffness of the spindle are chosen as random input variables,and the reliability analysis of the motorized spindle is carried out.The results show that the optimized static stiffness of the spindle increases by19.44 %,which can satisfy the design standard value.The reliability sensitivity analysis shows that the random changes of Young’s modulus,external load,bearing stiffness of the front axle and inner circular hole radius have a greater influence on the static stiffness of the motorized spindle.Which shows that the structure reliability is higher and the reliability of the optimized motorized spindle is 98.459 %.

Key words: motorized spindle, static stiffness, finite element analysis, response surface optimization, reliability analysis

CLC Number:

TG586
TH122

Luo Jing, Chen Yifan, Zhang Genbao, Li Yulong, Wang Zhichao. Reliability optimization and analysis of high speed motorized spindle[J]. Modern Manufacturing Engineering, 2018, 454(7): 93-98.

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